FsPerf.cpp@ 77968

Last change on this file since 77968 was 77968, checked in by vboxsync, 6 years ago
FsPerf: Fixed the no-file-handle testcase so it doesn't try write unaligned buffers to RTFILE_O_NO_CACHE handles. Would crash in memcmp later, as the file size was 0. bugref:9172
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File size: 187.4 KB

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1	/* $Id: FsPerf.cpp 77968 2019-03-31 19:30:33Z vboxsync $ */
2	/** @file
3	* FsPerf - File System (Shared Folders) Performance Benchmark.
4	*/
5
6	/*
7	* Copyright (C) 2019 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27
28	/*********************************************************************************************************************************
29	* Header Files *
30	*********************************************************************************************************************************/
31	#ifdef RT_OS_OS2
32	# define INCL_BASE
33	# include <os2.h>
34	# undef RT_MAX
35	#endif
36	#include <iprt/alloca.h>
37	#include <iprt/asm.h>
38	#include <iprt/assert.h>
39	#include <iprt/err.h>
40	#include <iprt/dir.h>
41	#include <iprt/file.h>
42	#include <iprt/getopt.h>
43	#include <iprt/initterm.h>
44	#include <iprt/list.h>
45	#include <iprt/mem.h>
46	#include <iprt/message.h>
47	#include <iprt/param.h>
48	#include <iprt/path.h>
49	#ifdef RT_OS_LINUX
50	# include <iprt/pipe.h>
51	#endif
52	#include <iprt/process.h>
53	#include <iprt/rand.h>
54	#include <iprt/string.h>
55	#include <iprt/stream.h>
56	#include <iprt/system.h>
57	#include <iprt/tcp.h>
58	#include <iprt/test.h>
59	#include <iprt/time.h>
60	#include <iprt/thread.h>
61	#include <iprt/zero.h>
62
63	#ifdef RT_OS_WINDOWS
64	# include <iprt/nt/nt-and-windows.h>
65	#else
66	# include <errno.h>
67	# include <unistd.h>
68	# include <limits.h>
69	# include <sys/types.h>
70	# include <sys/fcntl.h>
71	# ifndef RT_OS_OS2
72	# include <sys/mman.h>
73	# include <sys/uio.h>
74	# endif
75	# include <sys/socket.h>
76	# include <signal.h>
77	# ifdef RT_OS_LINUX
78	# include <sys/sendfile.h>
79	# include <sys/syscall.h>
80	# endif
81	# ifdef RT_OS_DARWIN
82	# include <sys/uio.h>
83	# endif
84	#endif
85
86
87	/*********************************************************************************************************************************
88	* Defined Constants And Macros *
89	*********************************************************************************************************************************/
90	/** @def FSPERF_TEST_SENDFILE
91	* Whether to enable the sendfile() tests. */
92	#if defined(RT_OS_LINUX) \|\| defined(RT_OS_DARWIN)
93	# define FSPERF_TEST_SENDFILE
94	#endif
95
96	/**
97	* Macro for profiling @a a_fnCall (typically forced inline) for about @a a_cNsTarget ns.
98	*
99	* Always does an even number of iterations.
100	*/
101	#define PROFILE_FN(a_fnCall, a_cNsTarget, a_szDesc) \
102	do { \
103	/* Estimate how many iterations we need to fill up the given timeslot: */ \
104	fsPerfYield(); \
105	uint64_t nsStart = RTTimeNanoTS(); \
106	uint64_t nsPrf; \
107	do \
108	nsPrf = RTTimeNanoTS(); \
109	while (nsPrf == nsStart); \
110	nsStart = nsPrf; \
111	\
112	uint64_t iIteration = 0; \
113	do \
114	{ \
115	RTTESTI_CHECK_RC(a_fnCall, VINF_SUCCESS); \
116	iIteration++; \
117	nsPrf = RTTimeNanoTS() - nsStart; \
118	} while (nsPrf < RT_NS_10MS \|\| (iIteration & 1)); \
119	nsPrf /= iIteration; \
120	if (nsPrf > g_nsPerNanoTSCall + 32) \
121	nsPrf -= g_nsPerNanoTSCall; \
122	\
123	uint64_t cIterations = (a_cNsTarget) / nsPrf; \
124	if (cIterations <= 1) \
125	cIterations = 2; \
126	else if (cIterations & 1) \
127	cIterations++; \
128	\
129	/* Do the actual profiling: */ \
130	fsPerfYield(); \
131	iIteration = 0; \
132	nsStart = RTTimeNanoTS(); \
133	for (; iIteration < cIterations; iIteration++) \
134	RTTESTI_CHECK_RC(a_fnCall, VINF_SUCCESS); \
135	nsPrf = RTTimeNanoTS() - nsStart; \
136	RTTestIValue(a_szDesc, nsPrf / cIterations, RTTESTUNIT_NS_PER_OCCURRENCE); \
137	if (g_fShowDuration) \
138	RTTestIValueF(nsPrf, RTTESTUNIT_NS, "%s duration", a_szDesc); \
139	if (g_fShowIterations) \
140	RTTestIValueF(iIteration, RTTESTUNIT_OCCURRENCES, "%s iterations", a_szDesc); \
141	} while (0)
142
143
144	/**
145	* Macro for profiling an operation on each file in the manytree directory tree.
146	*
147	* Always does an even number of tree iterations.
148	*/
149	#define PROFILE_MANYTREE_FN(a_szPath, a_fnCall, a_cEstimationIterations, a_cNsTarget, a_szDesc) \
150	do { \
151	if (!g_fManyFiles) \
152	break; \
153	\
154	/* Estimate how many iterations we need to fill up the given timeslot: */ \
155	fsPerfYield(); \
156	uint64_t nsStart = RTTimeNanoTS(); \
157	uint64_t ns; \
158	do \
159	ns = RTTimeNanoTS(); \
160	while (ns == nsStart); \
161	nsStart = ns; \
162	\
163	PFSPERFNAMEENTRY pCur; \
164	uint64_t iIteration = 0; \
165	do \
166	{ \
167	RTListForEach(&g_ManyTreeHead, pCur, FSPERFNAMEENTRY, Entry) \
168	{ \
169	memcpy(a_szPath, pCur->szName, pCur->cchName); \
170	for (uint32_t i = 0; i < g_cManyTreeFilesPerDir; i++) \
171	{ \
172	RTStrFormatU32(&a_szPath[pCur->cchName], sizeof(a_szPath) - pCur->cchName, i, 10, 5, 5, RTSTR_F_ZEROPAD); \
173	RTTESTI_CHECK_RC(a_fnCall, VINF_SUCCESS); \
174	} \
175	} \
176	iIteration++; \
177	ns = RTTimeNanoTS() - nsStart; \
178	} while (ns < RT_NS_10MS \|\| (iIteration & 1)); \
179	ns /= iIteration; \
180	if (ns > g_nsPerNanoTSCall + 32) \
181	ns -= g_nsPerNanoTSCall; \
182	\
183	uint32_t cIterations = (a_cNsTarget) / ns; \
184	if (cIterations <= 1) \
185	cIterations = 2; \
186	else if (cIterations & 1) \
187	cIterations++; \
188	\
189	/* Do the actual profiling: */ \
190	fsPerfYield(); \
191	uint32_t cCalls = 0; \
192	nsStart = RTTimeNanoTS(); \
193	for (iIteration = 0; iIteration < cIterations; iIteration++) \
194	{ \
195	RTListForEach(&g_ManyTreeHead, pCur, FSPERFNAMEENTRY, Entry) \
196	{ \
197	memcpy(a_szPath, pCur->szName, pCur->cchName); \
198	for (uint32_t i = 0; i < g_cManyTreeFilesPerDir; i++) \
199	{ \
200	RTStrFormatU32(&a_szPath[pCur->cchName], sizeof(a_szPath) - pCur->cchName, i, 10, 5, 5, RTSTR_F_ZEROPAD); \
201	RTTESTI_CHECK_RC(a_fnCall, VINF_SUCCESS); \
202	cCalls++; \
203	} \
204	} \
205	} \
206	ns = RTTimeNanoTS() - nsStart; \
207	RTTestIValueF(ns / cCalls, RTTESTUNIT_NS_PER_OCCURRENCE, a_szDesc); \
208	if (g_fShowDuration) \
209	RTTestIValueF(ns, RTTESTUNIT_NS, "%s duration", a_szDesc); \
210	if (g_fShowIterations) \
211	RTTestIValueF(iIteration, RTTESTUNIT_OCCURRENCES, "%s iterations", a_szDesc); \
212	} while (0)
213
214
215	/**
216	* Execute a_fnCall for each file in the manytree.
217	*/
218	#define DO_MANYTREE_FN(a_szPath, a_fnCall) \
219	do { \
220	PFSPERFNAMEENTRY pCur; \
221	RTListForEach(&g_ManyTreeHead, pCur, FSPERFNAMEENTRY, Entry) \
222	{ \
223	memcpy(a_szPath, pCur->szName, pCur->cchName); \
224	for (uint32_t i = 0; i < g_cManyTreeFilesPerDir; i++) \
225	{ \
226	RTStrFormatU32(&a_szPath[pCur->cchName], sizeof(a_szPath) - pCur->cchName, i, 10, 5, 5, RTSTR_F_ZEROPAD); \
227	a_fnCall; \
228	} \
229	} \
230	} while (0)
231
232
233	/** @def FSPERF_VERR_PATH_NOT_FOUND
234	* Hides the fact that we only get VERR_PATH_NOT_FOUND on non-unix systems. */
235	#if defined(RT_OS_WINDOWS) //\|\| defined(RT_OS_OS2) - using posix APIs IIRC, so lost in translation.
236	# define FSPERF_VERR_PATH_NOT_FOUND VERR_PATH_NOT_FOUND
237	#else
238	# define FSPERF_VERR_PATH_NOT_FOUND VERR_FILE_NOT_FOUND
239	#endif
240
241
242	/*********************************************************************************************************************************
243	* Structures and Typedefs *
244	*********************************************************************************************************************************/
245	typedef struct FSPERFNAMEENTRY
246	{
247	RTLISTNODE Entry;
248	uint16_t cchName;
249	char szName[RT_FLEXIBLE_ARRAY];
250	} FSPERFNAMEENTRY;
251	typedef FSPERFNAMEENTRY *PFSPERFNAMEENTRY;
252
253
254	enum
255	{
256	kCmdOpt_First = 128,
257
258	kCmdOpt_ManyFiles = kCmdOpt_First,
259	kCmdOpt_NoManyFiles,
260	kCmdOpt_Open,
261	kCmdOpt_NoOpen,
262	kCmdOpt_FStat,
263	kCmdOpt_NoFStat,
264	kCmdOpt_FChMod,
265	kCmdOpt_NoFChMod,
266	kCmdOpt_FUtimes,
267	kCmdOpt_NoFUtimes,
268	kCmdOpt_Stat,
269	kCmdOpt_NoStat,
270	kCmdOpt_ChMod,
271	kCmdOpt_NoChMod,
272	kCmdOpt_Utimes,
273	kCmdOpt_NoUtimes,
274	kCmdOpt_Rename,
275	kCmdOpt_NoRename,
276	kCmdOpt_DirOpen,
277	kCmdOpt_NoDirOpen,
278	kCmdOpt_DirEnum,
279	kCmdOpt_NoDirEnum,
280	kCmdOpt_MkRmDir,
281	kCmdOpt_NoMkRmDir,
282	kCmdOpt_StatVfs,
283	kCmdOpt_NoStatVfs,
284	kCmdOpt_Rm,
285	kCmdOpt_NoRm,
286	kCmdOpt_ChSize,
287	kCmdOpt_NoChSize,
288	kCmdOpt_ReadPerf,
289	kCmdOpt_NoReadPerf,
290	kCmdOpt_ReadTests,
291	kCmdOpt_NoReadTests,
292	#ifdef FSPERF_TEST_SENDFILE
293	kCmdOpt_SendFile,
294	kCmdOpt_NoSendFile,
295	#endif
296	#ifdef RT_OS_LINUX
297	kCmdOpt_Splice,
298	kCmdOpt_NoSplice,
299	#endif
300	kCmdOpt_WritePerf,
301	kCmdOpt_NoWritePerf,
302	kCmdOpt_WriteTests,
303	kCmdOpt_NoWriteTests,
304	kCmdOpt_Seek,
305	kCmdOpt_NoSeek,
306	kCmdOpt_FSync,
307	kCmdOpt_NoFSync,
308	kCmdOpt_MMap,
309	kCmdOpt_NoMMap,
310	kCmdOpt_IgnoreNoCache,
311	kCmdOpt_NoIgnoreNoCache,
312	kCmdOpt_IoFileSize,
313	kCmdOpt_SetBlockSize,
314	kCmdOpt_AddBlockSize,
315	kCmdOpt_Copy,
316	kCmdOpt_NoCopy,
317
318	kCmdOpt_ShowDuration,
319	kCmdOpt_NoShowDuration,
320	kCmdOpt_ShowIterations,
321	kCmdOpt_NoShowIterations,
322
323	kCmdOpt_ManyTreeFilesPerDir,
324	kCmdOpt_ManyTreeSubdirsPerDir,
325	kCmdOpt_ManyTreeDepth,
326
327	kCmdOpt_End
328	};
329
330
331	/*********************************************************************************************************************************
332	* Global Variables *
333	*********************************************************************************************************************************/
334	/** Command line parameters */
335	static const RTGETOPTDEF g_aCmdOptions[] =
336	{
337	{ "--dir", 'd', RTGETOPT_REQ_STRING },
338	{ "--seconds", 's', RTGETOPT_REQ_UINT32 },
339	{ "--milliseconds", 'm', RTGETOPT_REQ_UINT64 },
340
341	{ "--enable-all", 'e', RTGETOPT_REQ_NOTHING },
342	{ "--disable-all", 'z', RTGETOPT_REQ_NOTHING },
343
344	{ "--many-files", kCmdOpt_ManyFiles, RTGETOPT_REQ_UINT32 },
345	{ "--no-many-files", kCmdOpt_NoManyFiles, RTGETOPT_REQ_NOTHING },
346	{ "--files-per-dir", kCmdOpt_ManyTreeFilesPerDir, RTGETOPT_REQ_UINT32 },
347	{ "--subdirs-per-dir", kCmdOpt_ManyTreeSubdirsPerDir, RTGETOPT_REQ_UINT32 },
348	{ "--tree-depth", kCmdOpt_ManyTreeDepth, RTGETOPT_REQ_UINT32 },
349
350	{ "--open", kCmdOpt_Open, RTGETOPT_REQ_NOTHING },
351	{ "--no-open", kCmdOpt_NoOpen, RTGETOPT_REQ_NOTHING },
352	{ "--fstat", kCmdOpt_FStat, RTGETOPT_REQ_NOTHING },
353	{ "--no-fstat", kCmdOpt_NoFStat, RTGETOPT_REQ_NOTHING },
354	{ "--fchmod", kCmdOpt_FChMod, RTGETOPT_REQ_NOTHING },
355	{ "--no-fchmod", kCmdOpt_NoFChMod, RTGETOPT_REQ_NOTHING },
356	{ "--futimes", kCmdOpt_FUtimes, RTGETOPT_REQ_NOTHING },
357	{ "--no-futimes", kCmdOpt_NoFUtimes, RTGETOPT_REQ_NOTHING },
358	{ "--stat", kCmdOpt_Stat, RTGETOPT_REQ_NOTHING },
359	{ "--no-stat", kCmdOpt_NoStat, RTGETOPT_REQ_NOTHING },
360	{ "--chmod", kCmdOpt_ChMod, RTGETOPT_REQ_NOTHING },
361	{ "--no-chmod", kCmdOpt_NoChMod, RTGETOPT_REQ_NOTHING },
362	{ "--utimes", kCmdOpt_Utimes, RTGETOPT_REQ_NOTHING },
363	{ "--no-utimes", kCmdOpt_NoUtimes, RTGETOPT_REQ_NOTHING },
364	{ "--rename", kCmdOpt_Rename, RTGETOPT_REQ_NOTHING },
365	{ "--no-rename", kCmdOpt_NoRename, RTGETOPT_REQ_NOTHING },
366	{ "--dir-open", kCmdOpt_DirOpen, RTGETOPT_REQ_NOTHING },
367	{ "--no-dir-open", kCmdOpt_NoDirOpen, RTGETOPT_REQ_NOTHING },
368	{ "--dir-enum", kCmdOpt_DirEnum, RTGETOPT_REQ_NOTHING },
369	{ "--no-dir-enum", kCmdOpt_NoDirEnum, RTGETOPT_REQ_NOTHING },
370	{ "--mk-rm-dir", kCmdOpt_MkRmDir, RTGETOPT_REQ_NOTHING },
371	{ "--no-mk-rm-dir", kCmdOpt_NoMkRmDir, RTGETOPT_REQ_NOTHING },
372	{ "--stat-vfs", kCmdOpt_StatVfs, RTGETOPT_REQ_NOTHING },
373	{ "--no-stat-vfs", kCmdOpt_NoStatVfs, RTGETOPT_REQ_NOTHING },
374	{ "--rm", kCmdOpt_Rm, RTGETOPT_REQ_NOTHING },
375	{ "--no-rm", kCmdOpt_NoRm, RTGETOPT_REQ_NOTHING },
376	{ "--chsize", kCmdOpt_ChSize, RTGETOPT_REQ_NOTHING },
377	{ "--no-chsize", kCmdOpt_NoChSize, RTGETOPT_REQ_NOTHING },
378	{ "--read-tests", kCmdOpt_ReadTests, RTGETOPT_REQ_NOTHING },
379	{ "--no-read-tests", kCmdOpt_NoReadTests, RTGETOPT_REQ_NOTHING },
380	{ "--read-perf", kCmdOpt_ReadPerf, RTGETOPT_REQ_NOTHING },
381	{ "--no-read-perf", kCmdOpt_NoReadPerf, RTGETOPT_REQ_NOTHING },
382	#ifdef FSPERF_TEST_SENDFILE
383	{ "--sendfile", kCmdOpt_SendFile, RTGETOPT_REQ_NOTHING },
384	{ "--no-sendfile", kCmdOpt_NoSendFile, RTGETOPT_REQ_NOTHING },
385	#endif
386	#ifdef RT_OS_LINUX
387	{ "--splice", kCmdOpt_Splice, RTGETOPT_REQ_NOTHING },
388	{ "--no-splice", kCmdOpt_NoSplice, RTGETOPT_REQ_NOTHING },
389	#endif
390	{ "--write-tests", kCmdOpt_WriteTests, RTGETOPT_REQ_NOTHING },
391	{ "--no-write-tests", kCmdOpt_NoWriteTests, RTGETOPT_REQ_NOTHING },
392	{ "--write-perf", kCmdOpt_WritePerf, RTGETOPT_REQ_NOTHING },
393	{ "--no-write-perf", kCmdOpt_NoWritePerf, RTGETOPT_REQ_NOTHING },
394	{ "--seek", kCmdOpt_Seek, RTGETOPT_REQ_NOTHING },
395	{ "--no-seek", kCmdOpt_NoSeek, RTGETOPT_REQ_NOTHING },
396	{ "--fsync", kCmdOpt_FSync, RTGETOPT_REQ_NOTHING },
397	{ "--no-fsync", kCmdOpt_NoFSync, RTGETOPT_REQ_NOTHING },
398	{ "--mmap", kCmdOpt_MMap, RTGETOPT_REQ_NOTHING },
399	{ "--no-mmap", kCmdOpt_NoMMap, RTGETOPT_REQ_NOTHING },
400	{ "--ignore-no-cache", kCmdOpt_IgnoreNoCache, RTGETOPT_REQ_NOTHING },
401	{ "--no-ignore-no-cache", kCmdOpt_NoIgnoreNoCache, RTGETOPT_REQ_NOTHING },
402	{ "--io-file-size", kCmdOpt_IoFileSize, RTGETOPT_REQ_UINT64 },
403	{ "--set-block-size", kCmdOpt_SetBlockSize, RTGETOPT_REQ_UINT32 },
404	{ "--add-block-size", kCmdOpt_AddBlockSize, RTGETOPT_REQ_UINT32 },
405	{ "--copy", kCmdOpt_Copy, RTGETOPT_REQ_NOTHING },
406	{ "--no-copy", kCmdOpt_NoCopy, RTGETOPT_REQ_NOTHING },
407
408	{ "--show-duration", kCmdOpt_ShowDuration, RTGETOPT_REQ_NOTHING },
409	{ "--no-show-duration", kCmdOpt_NoShowDuration, RTGETOPT_REQ_NOTHING },
410	{ "--show-iterations", kCmdOpt_ShowIterations, RTGETOPT_REQ_NOTHING },
411	{ "--no-show-iterations", kCmdOpt_NoShowIterations, RTGETOPT_REQ_NOTHING },
412
413	{ "--quiet", 'q', RTGETOPT_REQ_NOTHING },
414	{ "--verbose", 'v', RTGETOPT_REQ_NOTHING },
415	{ "--version", 'V', RTGETOPT_REQ_NOTHING },
416	{ "--help", 'h', RTGETOPT_REQ_NOTHING } /* for Usage() */
417	};
418
419	/** The test handle. */
420	static RTTEST g_hTest;
421	/** The number of nanoseconds a RTTimeNanoTS call takes.
422	* This is used for adjusting loop count estimates. */
423	static uint64_t g_nsPerNanoTSCall = 1;
424	/** Whether or not to display the duration of each profile run.
425	* This is chiefly for verify the estimate phase. */
426	static bool g_fShowDuration = false;
427	/** Whether or not to display the iteration count for each profile run.
428	* This is chiefly for verify the estimate phase. */
429	static bool g_fShowIterations = false;
430	/** Verbosity level. */
431	static uint32_t g_uVerbosity = 0;
432
433	/** @name Selected subtest
434	* @{ */
435	static bool g_fManyFiles = true;
436	static bool g_fOpen = true;
437	static bool g_fFStat = true;
438	static bool g_fFChMod = true;
439	static bool g_fFUtimes = true;
440	static bool g_fStat = true;
441	static bool g_fChMod = true;
442	static bool g_fUtimes = true;
443	static bool g_fRename = true;
444	static bool g_fDirOpen = true;
445	static bool g_fDirEnum = true;
446	static bool g_fMkRmDir = true;
447	static bool g_fStatVfs = true;
448	static bool g_fRm = true;
449	static bool g_fChSize = true;
450	static bool g_fReadTests = true;
451	static bool g_fReadPerf = true;
452	#ifdef FSPERF_TEST_SENDFILE
453	static bool g_fSendFile = true;
454	#endif
455	#ifdef RT_OS_LINUX
456	static bool g_fSplice = true;
457	#endif
458	static bool g_fWriteTests= true;
459	static bool g_fWritePerf = true;
460	static bool g_fSeek = true;
461	static bool g_fFSync = true;
462	static bool g_fMMap = true;
463	static bool g_fCopy = true;
464	/** @} */
465
466	/** The length of each test run. */
467	static uint64_t g_nsTestRun = RT_NS_1SEC_64 * 10;
468
469	/** For the 'manyfiles' subdir. */
470	static uint32_t g_cManyFiles = 10000;
471
472	/** Number of files in the 'manytree' directory tree. */
473	static uint32_t g_cManyTreeFiles = 640 + 16640 /10880*/;
474	/** Number of files per directory in the 'manytree' construct. */
475	static uint32_t g_cManyTreeFilesPerDir = 640;
476	/** Number of subdirs per directory in the 'manytree' construct. */
477	static uint32_t g_cManyTreeSubdirsPerDir = 16;
478	/** The depth of the 'manytree' directory tree. */
479	static uint32_t g_cManyTreeDepth = 1;
480	/** List of directories in the many tree, creation order. */
481	static RTLISTANCHOR g_ManyTreeHead;
482
483	/** Number of configured I/O block sizes. */
484	static uint32_t g_cIoBlocks = 8;
485	/** Configured I/O block sizes. */
486	static uint32_t g_acbIoBlocks[16] = { 1, 512, 4096, 16384, 65536, _1M, _32M, _128M };
487	/** The desired size of the test file we use for I/O. */
488	static uint64_t g_cbIoFile = _512M;
489	/** Whether to be less strict with non-cache file handle. */
490	static bool g_fIgnoreNoCache = false;
491
492	/** The length of g_szDir. */
493	static size_t g_cchDir;
494	/** The length of g_szEmptyDir. */
495	static size_t g_cchEmptyDir;
496	/** The length of g_szDeepDir. */
497	static size_t g_cchDeepDir;
498
499	/** The test directory (absolute). This will always have a trailing slash. */
500	static char g_szDir[RTPATH_MAX];
501	/** The test directory (absolute), 2nd copy for use with InDir2(). */
502	static char g_szDir2[RTPATH_MAX];
503	/** The empty test directory (absolute). This will always have a trailing slash. */
504	static char g_szEmptyDir[RTPATH_MAX];
505	/** The deep test directory (absolute). This will always have a trailing slash. */
506	static char g_szDeepDir[RTPATH_MAX];
507
508
509	/**
510	* Yield the CPU and stuff before starting a test run.
511	*/
512	DECLINLINE(void) fsPerfYield(void)
513	{
514	RTThreadYield();
515	RTThreadYield();
516	}
517
518
519	/**
520	* Profiles the RTTimeNanoTS call, setting g_nsPerNanoTSCall.
521	*/
522	static void fsPerfNanoTS(void)
523	{
524	fsPerfYield();
525
526	/* Make sure we start off on a changing timestamp on platforms will low time resoultion. */
527	uint64_t nsStart = RTTimeNanoTS();
528	uint64_t ns;
529	do
530	ns = RTTimeNanoTS();
531	while (ns == nsStart);
532	nsStart = ns;
533
534	/* Call it for 10 ms. */
535	uint32_t i = 0;
536	do
537	{
538	i++;
539	ns = RTTimeNanoTS();
540	}
541	while (ns - nsStart < RT_NS_10MS);
542
543	g_nsPerNanoTSCall = (ns - nsStart) / i;
544	}
545
546
547	/**
548	* Construct a path relative to the base test directory.
549	*
550	* @returns g_szDir.
551	* @param pszAppend What to append.
552	* @param cchAppend How much to append.
553	*/
554	DECLINLINE(char ) InDir(const char pszAppend, size_t cchAppend)
555	{
556	Assert(g_szDir[g_cchDir - 1] == RTPATH_SLASH);
557	memcpy(&g_szDir[g_cchDir], pszAppend, cchAppend);
558	g_szDir[g_cchDir + cchAppend] = '\0';
559	return &g_szDir[0];
560	}
561
562
563	/**
564	* Construct a path relative to the base test directory, 2nd copy.
565	*
566	* @returns g_szDir2.
567	* @param pszAppend What to append.
568	* @param cchAppend How much to append.
569	*/
570	DECLINLINE(char ) InDir2(const char pszAppend, size_t cchAppend)
571	{
572	Assert(g_szDir[g_cchDir - 1] == RTPATH_SLASH);
573	memcpy(g_szDir2, g_szDir, g_cchDir);
574	memcpy(&g_szDir2[g_cchDir], pszAppend, cchAppend);
575	g_szDir2[g_cchDir + cchAppend] = '\0';
576	return &g_szDir2[0];
577	}
578
579
580	/**
581	* Construct a path relative to the empty directory.
582	*
583	* @returns g_szEmptyDir.
584	* @param pszAppend What to append.
585	* @param cchAppend How much to append.
586	*/
587	DECLINLINE(char ) InEmptyDir(const char pszAppend, size_t cchAppend)
588	{
589	Assert(g_szEmptyDir[g_cchEmptyDir - 1] == RTPATH_SLASH);
590	memcpy(&g_szEmptyDir[g_cchEmptyDir], pszAppend, cchAppend);
591	g_szEmptyDir[g_cchEmptyDir + cchAppend] = '\0';
592	return &g_szEmptyDir[0];
593	}
594
595
596	/**
597	* Construct a path relative to the deep test directory.
598	*
599	* @returns g_szDeepDir.
600	* @param pszAppend What to append.
601	* @param cchAppend How much to append.
602	*/
603	DECLINLINE(char ) InDeepDir(const char pszAppend, size_t cchAppend)
604	{
605	Assert(g_szDeepDir[g_cchDeepDir - 1] == RTPATH_SLASH);
606	memcpy(&g_szDeepDir[g_cchDeepDir], pszAppend, cchAppend);
607	g_szDeepDir[g_cchDeepDir + cchAppend] = '\0';
608	return &g_szDeepDir[0];
609	}
610
611
612	/**
613	* Prepares the test area.
614	* @returns VBox status code.
615	*/
616	static int fsPrepTestArea(void)
617	{
618	/* The empty subdir and associated globals: */
619	static char s_szEmpty[] = "empty";
620	memcpy(g_szEmptyDir, g_szDir, g_cchDir);
621	memcpy(&g_szEmptyDir[g_cchDir], s_szEmpty, sizeof(s_szEmpty));
622	g_cchEmptyDir = g_cchDir + sizeof(s_szEmpty) - 1;
623	RTTESTI_CHECK_RC_RET(RTDirCreate(g_szEmptyDir, 0755, 0), VINF_SUCCESS, rcCheck);
624	g_szEmptyDir[g_cchEmptyDir++] = RTPATH_SLASH;
625	g_szEmptyDir[g_cchEmptyDir] = '\0';
626	RTTestIPrintf(RTTESTLVL_ALWAYS, "Empty dir: %s\n", g_szEmptyDir);
627
628	/* Deep directory: */
629	memcpy(g_szDeepDir, g_szDir, g_cchDir);
630	g_cchDeepDir = g_cchDir;
631	do
632	{
633	static char const s_szSub[] = "d" RTPATH_SLASH_STR;
634	memcpy(&g_szDeepDir[g_cchDeepDir], s_szSub, sizeof(s_szSub));
635	g_cchDeepDir += sizeof(s_szSub) - 1;
636	RTTESTI_CHECK_RC_RET( RTDirCreate(g_szDeepDir, 0755, 0), VINF_SUCCESS, rcCheck);
637	} while (g_cchDeepDir < 176);
638	RTTestIPrintf(RTTESTLVL_ALWAYS, "Deep dir: %s\n", g_szDeepDir);
639
640	/* Create known file in both deep and shallow dirs: */
641	RTFILE hKnownFile;
642	RTTESTI_CHECK_RC_RET(RTFileOpen(&hKnownFile, InDir(RT_STR_TUPLE("known-file")),
643	RTFILE_O_CREATE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE),
644	VINF_SUCCESS, rcCheck);
645	RTTESTI_CHECK_RC_RET(RTFileClose(hKnownFile), VINF_SUCCESS, rcCheck);
646
647	RTTESTI_CHECK_RC_RET(RTFileOpen(&hKnownFile, InDeepDir(RT_STR_TUPLE("known-file")),
648	RTFILE_O_CREATE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE),
649	VINF_SUCCESS, rcCheck);
650	RTTESTI_CHECK_RC_RET(RTFileClose(hKnownFile), VINF_SUCCESS, rcCheck);
651
652	return VINF_SUCCESS;
653	}
654
655
656	/**
657	* Create a name list entry.
658	* @returns Pointer to the entry, NULL if out of memory.
659	* @param pchName The name.
660	* @param cchName The name length.
661	*/
662	PFSPERFNAMEENTRY fsPerfCreateNameEntry(const char *pchName, size_t cchName)
663	{
664	PFSPERFNAMEENTRY pEntry = (PFSPERFNAMEENTRY)RTMemAllocVar(RT_UOFFSETOF_DYN(FSPERFNAMEENTRY, szName[cchName + 1]));
665	if (pEntry)
666	{
667	RTListInit(&pEntry->Entry);
668	pEntry->cchName = (uint16_t)cchName;
669	memcpy(pEntry->szName, pchName, cchName);
670	pEntry->szName[cchName] = '\0';
671	}
672	return pEntry;
673	}
674
675
676	static int fsPerfManyTreeRecursiveDirCreator(size_t cchDir, uint32_t iDepth)
677	{
678	PFSPERFNAMEENTRY pEntry = fsPerfCreateNameEntry(g_szDir, cchDir);
679	RTTESTI_CHECK_RET(pEntry, VERR_NO_MEMORY);
680	RTListAppend(&g_ManyTreeHead, &pEntry->Entry);
681
682	RTTESTI_CHECK_RC_RET(RTDirCreate(g_szDir, 0755, RTDIRCREATE_FLAGS_NOT_CONTENT_INDEXED_DONT_SET \| RTDIRCREATE_FLAGS_NOT_CONTENT_INDEXED_NOT_CRITICAL),
683	VINF_SUCCESS, rcCheck);
684
685	if (iDepth < g_cManyTreeDepth)
686	for (uint32_t i = 0; i < g_cManyTreeSubdirsPerDir; i++)
687	{
688	size_t cchSubDir = RTStrPrintf(&g_szDir[cchDir], sizeof(g_szDir) - cchDir, "d%02u" RTPATH_SLASH_STR, i);
689	RTTESTI_CHECK_RC_RET(fsPerfManyTreeRecursiveDirCreator(cchDir + cchSubDir, iDepth + 1), VINF_SUCCESS, rcCheck);
690	}
691
692	return VINF_SUCCESS;
693	}
694
695
696	void fsPerfManyFiles(void)
697	{
698	RTTestISub("manyfiles");
699
700	/*
701	* Create a sub-directory with like 10000 files in it.
702	*
703	* This does push the directory organization of the underlying file system,
704	* which is something we might not want to profile with shared folders. It
705	* is however useful for directory enumeration.
706	*/
707	RTTESTI_CHECK_RC_RETV(RTDirCreate(InDir(RT_STR_TUPLE("manyfiles")), 0755,
708	RTDIRCREATE_FLAGS_NOT_CONTENT_INDEXED_DONT_SET \| RTDIRCREATE_FLAGS_NOT_CONTENT_INDEXED_NOT_CRITICAL),
709	VINF_SUCCESS);
710
711	size_t offFilename = strlen(g_szDir);
712	g_szDir[offFilename++] = RTPATH_SLASH;
713
714	fsPerfYield();
715	RTFILE hFile;
716	uint64_t const nsStart = RTTimeNanoTS();
717	for (uint32_t i = 0; i < g_cManyFiles; i++)
718	{
719	RTStrFormatU32(&g_szDir[offFilename], sizeof(g_szDir) - offFilename, i, 10, 5, 5, RTSTR_F_ZEROPAD);
720	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile, g_szDir, RTFILE_O_CREATE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
721	RTTESTI_CHECK_RC(RTFileClose(hFile), VINF_SUCCESS);
722	}
723	uint64_t const cNsElapsed = RTTimeNanoTS() - nsStart;
724	RTTestIValueF(cNsElapsed, RTTESTUNIT_NS, "Creating %u empty files in single directory", g_cManyFiles);
725	RTTestIValueF(cNsElapsed / g_cManyFiles, RTTESTUNIT_NS_PER_OCCURRENCE, "Create empty file (single dir)");
726
727	/*
728	* Create a bunch of directories with exacly 32 files in each, hoping to
729	* avoid any directory organization artifacts.
730	*/
731	/* Create the directories first, building a list of them for simplifying iteration: */
732	RTListInit(&g_ManyTreeHead);
733	InDir(RT_STR_TUPLE("manytree" RTPATH_SLASH_STR));
734	RTTESTI_CHECK_RC_RETV(fsPerfManyTreeRecursiveDirCreator(strlen(g_szDir), 0), VINF_SUCCESS);
735
736	/* Create the zero byte files: */
737	fsPerfYield();
738	uint64_t const nsStart2 = RTTimeNanoTS();
739	uint32_t cFiles = 0;
740	PFSPERFNAMEENTRY pCur;
741	RTListForEach(&g_ManyTreeHead, pCur, FSPERFNAMEENTRY, Entry)
742	{
743	char szPath[RTPATH_MAX];
744	memcpy(szPath, pCur->szName, pCur->cchName);
745	for (uint32_t i = 0; i < g_cManyTreeFilesPerDir; i++)
746	{
747	RTStrFormatU32(&szPath[pCur->cchName], sizeof(szPath) - pCur->cchName, i, 10, 5, 5, RTSTR_F_ZEROPAD);
748	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile, szPath, RTFILE_O_CREATE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
749	RTTESTI_CHECK_RC(RTFileClose(hFile), VINF_SUCCESS);
750	cFiles++;
751	}
752	}
753	uint64_t const cNsElapsed2 = RTTimeNanoTS() - nsStart2;
754	RTTestIValueF(cNsElapsed2, RTTESTUNIT_NS, "Creating %u empty files in tree", cFiles);
755	RTTestIValueF(cNsElapsed2 / cFiles, RTTESTUNIT_NS_PER_OCCURRENCE, "Create empty file (tree)");
756	RTTESTI_CHECK(g_cManyTreeFiles == cFiles);
757	}
758
759
760	DECL_FORCE_INLINE(int) fsPerfOpenExistingOnceReadonly(const char *pszFile)
761	{
762	RTFILE hFile;
763	RTTESTI_CHECK_RC_RET(RTFileOpen(&hFile, pszFile, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), VINF_SUCCESS, rcCheck);
764	RTTESTI_CHECK_RC(RTFileClose(hFile), VINF_SUCCESS);
765	return VINF_SUCCESS;
766	}
767
768
769	DECL_FORCE_INLINE(int) fsPerfOpenExistingOnceWriteonly(const char *pszFile)
770	{
771	RTFILE hFile;
772	RTTESTI_CHECK_RC_RET(RTFileOpen(&hFile, pszFile, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS, rcCheck);
773	RTTESTI_CHECK_RC(RTFileClose(hFile), VINF_SUCCESS);
774	return VINF_SUCCESS;
775	}
776
777
778	/** @note tstRTFileOpenEx-1.cpp has a copy of this code. */
779	static void tstOpenExTest(unsigned uLine, int cbExist, int cbNext, const char *pszFilename, uint64_t fAction,
780	int rcExpect, RTFILEACTION enmActionExpected)
781	{
782	uint64_t const fCreateMode = (0644 << RTFILE_O_CREATE_MODE_SHIFT);
783	RTFILE hFile;
784	int rc;
785
786	/*
787	* File existence and size.
788	*/
789	bool fOkay = false;
790	RTFSOBJINFO ObjInfo;
791	rc = RTPathQueryInfoEx(pszFilename, &ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK);
792	if (RT_SUCCESS(rc))
793	fOkay = cbExist == (int64_t)ObjInfo.cbObject;
794	else
795	fOkay = rc == VERR_FILE_NOT_FOUND && cbExist < 0;
796	if (!fOkay)
797	{
798	if (cbExist >= 0)
799	{
800	rc = RTFileOpen(&hFile, pszFilename, RTFILE_O_WRITE \| RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| fCreateMode);
801	if (RT_SUCCESS(rc))
802	{
803	while (cbExist > 0)
804	{
805	int cbToWrite = (int)strlen(pszFilename);
806	if (cbToWrite > cbExist)
807	cbToWrite = cbExist;
808	rc = RTFileWrite(hFile, pszFilename, cbToWrite, NULL);
809	if (RT_FAILURE(rc))
810	{
811	RTTestIFailed("%u: RTFileWrite(%s,%#x) -> %Rrc\n", uLine, pszFilename, cbToWrite, rc);
812	break;
813	}
814	cbExist -= cbToWrite;
815	}
816
817	RTTESTI_CHECK_RC(RTFileClose(hFile), VINF_SUCCESS);
818	}
819	else
820	RTTestIFailed("%u: RTFileDelete(%s) -> %Rrc\n", uLine, pszFilename, rc);
821
822	}
823	else
824	{
825	rc = RTFileDelete(pszFilename);
826	if (rc != VINF_SUCCESS && rc != VERR_FILE_NOT_FOUND)
827	RTTestIFailed("%u: RTFileDelete(%s) -> %Rrc\n", uLine, pszFilename, rc);
828	}
829	}
830
831	/*
832	* The actual test.
833	*/
834	RTFILEACTION enmActuallyTaken = RTFILEACTION_END;
835	hFile = NIL_RTFILE;
836	rc = RTFileOpenEx(pszFilename, fAction \| RTFILE_O_READWRITE \| RTFILE_O_DENY_NONE \| fCreateMode, &hFile, &enmActuallyTaken);
837	if ( rc != rcExpect
838	\|\| enmActuallyTaken != enmActionExpected
839	\|\| (RT_SUCCESS(rc) ? hFile == NIL_RTFILE : hFile != NIL_RTFILE))
840	RTTestIFailed("%u: RTFileOpenEx(%s, %#llx) -> %Rrc + %d (hFile=%p), expected %Rrc + %d\n",
841	uLine, pszFilename, fAction, rc, enmActuallyTaken, hFile, rcExpect, enmActionExpected);
842	if (RT_SUCCESS(rc))
843	{
844	if ( enmActionExpected == RTFILEACTION_REPLACED
845	\|\| enmActionExpected == RTFILEACTION_TRUNCATED)
846	{
847	uint8_t abBuf[16];
848	rc = RTFileRead(hFile, abBuf, 1, NULL);
849	if (rc != VERR_EOF)
850	RTTestIFailed("%u: RTFileRead(%s,,1,) -> %Rrc, expected VERR_EOF\n", uLine, pszFilename, rc);
851	}
852
853	while (cbNext > 0)
854	{
855	int cbToWrite = (int)strlen(pszFilename);
856	if (cbToWrite > cbNext)
857	cbToWrite = cbNext;
858	rc = RTFileWrite(hFile, pszFilename, cbToWrite, NULL);
859	if (RT_FAILURE(rc))
860	{
861	RTTestIFailed("%u: RTFileWrite(%s,%#x) -> %Rrc\n", uLine, pszFilename, cbToWrite, rc);
862	break;
863	}
864	cbNext -= cbToWrite;
865	}
866
867	rc = RTFileClose(hFile);
868	if (RT_FAILURE(rc))
869	RTTestIFailed("%u: RTFileClose(%p) -> %Rrc\n", uLine, hFile, rc);
870	}
871	}
872
873
874	void fsPerfOpen(void)
875	{
876	RTTestISub("open");
877
878	/* Opening non-existing files. */
879	RTFILE hFile;
880	RTTESTI_CHECK_RC(RTFileOpen(&hFile, InEmptyDir(RT_STR_TUPLE("no-such-file")),
881	RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), VERR_FILE_NOT_FOUND);
882	RTTESTI_CHECK_RC(RTFileOpen(&hFile, InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file")),
883	RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), FSPERF_VERR_PATH_NOT_FOUND);
884	RTTESTI_CHECK_RC(RTFileOpen(&hFile, InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file")),
885	RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), VERR_PATH_NOT_FOUND);
886
887	/*
888	* The following is copied from tstRTFileOpenEx-1.cpp:
889	*/
890	InDir(RT_STR_TUPLE("file1"));
891	tstOpenExTest(__LINE__, -1, -1, g_szDir, RTFILE_O_OPEN, VERR_FILE_NOT_FOUND, RTFILEACTION_INVALID);
892	tstOpenExTest(__LINE__, -1, -1, g_szDir, RTFILE_O_OPEN_CREATE, VINF_SUCCESS, RTFILEACTION_CREATED);
893	tstOpenExTest(__LINE__, 0, 0, g_szDir, RTFILE_O_OPEN_CREATE, VINF_SUCCESS, RTFILEACTION_OPENED);
894	tstOpenExTest(__LINE__, 0, 0, g_szDir, RTFILE_O_OPEN, VINF_SUCCESS, RTFILEACTION_OPENED);
895
896	tstOpenExTest(__LINE__, 0, 0, g_szDir, RTFILE_O_OPEN \| RTFILE_O_TRUNCATE, VINF_SUCCESS, RTFILEACTION_TRUNCATED);
897	tstOpenExTest(__LINE__, 0, 10, g_szDir, RTFILE_O_OPEN_CREATE \| RTFILE_O_TRUNCATE, VINF_SUCCESS, RTFILEACTION_TRUNCATED);
898	tstOpenExTest(__LINE__, 10, 10, g_szDir, RTFILE_O_OPEN_CREATE \| RTFILE_O_TRUNCATE, VINF_SUCCESS, RTFILEACTION_TRUNCATED);
899	tstOpenExTest(__LINE__, 10, -1, g_szDir, RTFILE_O_OPEN \| RTFILE_O_TRUNCATE, VINF_SUCCESS, RTFILEACTION_TRUNCATED);
900	tstOpenExTest(__LINE__, -1, -1, g_szDir, RTFILE_O_OPEN \| RTFILE_O_TRUNCATE, VERR_FILE_NOT_FOUND, RTFILEACTION_INVALID);
901	tstOpenExTest(__LINE__, -1, 0, g_szDir, RTFILE_O_OPEN_CREATE \| RTFILE_O_TRUNCATE, VINF_SUCCESS, RTFILEACTION_CREATED);
902
903	tstOpenExTest(__LINE__, 0, -1, g_szDir, RTFILE_O_CREATE_REPLACE, VINF_SUCCESS, RTFILEACTION_REPLACED);
904	tstOpenExTest(__LINE__, -1, 0, g_szDir, RTFILE_O_CREATE_REPLACE, VINF_SUCCESS, RTFILEACTION_CREATED);
905	tstOpenExTest(__LINE__, 0, -1, g_szDir, RTFILE_O_CREATE, VERR_ALREADY_EXISTS, RTFILEACTION_ALREADY_EXISTS);
906	tstOpenExTest(__LINE__, -1, -1, g_szDir, RTFILE_O_CREATE, VINF_SUCCESS, RTFILEACTION_CREATED);
907
908	tstOpenExTest(__LINE__, -1, 10, g_szDir, RTFILE_O_CREATE \| RTFILE_O_TRUNCATE, VINF_SUCCESS, RTFILEACTION_CREATED);
909	tstOpenExTest(__LINE__, 10, 10, g_szDir, RTFILE_O_CREATE \| RTFILE_O_TRUNCATE, VERR_ALREADY_EXISTS, RTFILEACTION_ALREADY_EXISTS);
910	tstOpenExTest(__LINE__, 10, -1, g_szDir, RTFILE_O_CREATE_REPLACE \| RTFILE_O_TRUNCATE, VINF_SUCCESS, RTFILEACTION_REPLACED);
911	tstOpenExTest(__LINE__, -1, -1, g_szDir, RTFILE_O_CREATE_REPLACE \| RTFILE_O_TRUNCATE, VINF_SUCCESS, RTFILEACTION_CREATED);
912
913	RTTESTI_CHECK_RC(RTFileDelete(g_szDir), VINF_SUCCESS);
914
915	/*
916	* Create file1 and then try exclusivly creating it again.
917	* Then profile opening it for reading.
918	*/
919	RTFILE hFile1;
920	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file1")),
921	RTFILE_O_CREATE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
922	RTTESTI_CHECK_RC(RTFileOpen(&hFile, g_szDir, RTFILE_O_CREATE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VERR_ALREADY_EXISTS);
923	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
924
925	PROFILE_FN(fsPerfOpenExistingOnceReadonly(g_szDir), g_nsTestRun, "RTFileOpen/Close/Readonly");
926	PROFILE_FN(fsPerfOpenExistingOnceWriteonly(g_szDir), g_nsTestRun, "RTFileOpen/Close/Writeonly");
927
928	/*
929	* Profile opening in the deep directory too.
930	*/
931	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDeepDir(RT_STR_TUPLE("file1")),
932	RTFILE_O_CREATE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
933	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
934	PROFILE_FN(fsPerfOpenExistingOnceReadonly(g_szDeepDir), g_nsTestRun, "RTFileOpen/Close/deep/readonly");
935	PROFILE_FN(fsPerfOpenExistingOnceWriteonly(g_szDeepDir), g_nsTestRun, "RTFileOpen/Close/deep/writeonly");
936
937	/* Manytree: */
938	char szPath[RTPATH_MAX];
939	PROFILE_MANYTREE_FN(szPath, fsPerfOpenExistingOnceReadonly(szPath), 1, g_nsTestRun, "RTFileOpen/Close/manytree/readonly");
940	}
941
942
943	void fsPerfFStat(void)
944	{
945	RTTestISub("fstat");
946	RTFILE hFile1;
947	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file2")),
948	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
949	RTFSOBJINFO ObjInfo = {0};
950	PROFILE_FN(RTFileQueryInfo(hFile1, &ObjInfo, RTFSOBJATTRADD_NOTHING), g_nsTestRun, "RTFileQueryInfo/NOTHING");
951	PROFILE_FN(RTFileQueryInfo(hFile1, &ObjInfo, RTFSOBJATTRADD_UNIX), g_nsTestRun, "RTFileQueryInfo/UNIX");
952
953	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
954	}
955
956
957	void fsPerfFChMod(void)
958	{
959	RTTestISub("fchmod");
960	RTFILE hFile1;
961	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file4")),
962	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
963	RTFSOBJINFO ObjInfo = {0};
964	RTTESTI_CHECK_RC(RTFileQueryInfo(hFile1, &ObjInfo, RTFSOBJATTRADD_NOTHING), VINF_SUCCESS);
965	RTFMODE const fEvenMode = (ObjInfo.Attr.fMode & ~RTFS_UNIX_ALL_ACCESS_PERMS) \| RTFS_DOS_READONLY \| 0400;
966	RTFMODE const fOddMode = (ObjInfo.Attr.fMode & ~(RTFS_UNIX_ALL_ACCESS_PERMS \| RTFS_DOS_READONLY)) \| 0640;
967	PROFILE_FN(RTFileSetMode(hFile1, iIteration & 1 ? fOddMode : fEvenMode), g_nsTestRun, "RTFileSetMode");
968
969	RTFileSetMode(hFile1, ObjInfo.Attr.fMode);
970	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
971	}
972
973
974	void fsPerfFUtimes(void)
975	{
976	RTTestISub("futimes");
977	RTFILE hFile1;
978	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file5")),
979	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
980	RTTIMESPEC Time1;
981	RTTimeNow(&Time1);
982	RTTIMESPEC Time2 = Time1;
983	RTTimeSpecSubSeconds(&Time2, 3636);
984
985	RTFSOBJINFO ObjInfo0 = {0};
986	RTTESTI_CHECK_RC(RTFileQueryInfo(hFile1, &ObjInfo0, RTFSOBJATTRADD_NOTHING), VINF_SUCCESS);
987
988	/* Modify modification time: */
989	RTTESTI_CHECK_RC(RTFileSetTimes(hFile1, NULL, &Time2, NULL, NULL), VINF_SUCCESS);
990	RTFSOBJINFO ObjInfo1 = {0};
991	RTTESTI_CHECK_RC(RTFileQueryInfo(hFile1, &ObjInfo1, RTFSOBJATTRADD_NOTHING), VINF_SUCCESS);
992	RTTESTI_CHECK((RTTimeSpecGetSeconds(&ObjInfo1.ModificationTime) >> 2) == (RTTimeSpecGetSeconds(&Time2) >> 2));
993	char sz1[RTTIME_STR_LEN], sz2[RTTIME_STR_LEN]; /* Div by 1000 here for posix impl. using timeval. */
994	RTTESTI_CHECK_MSG(RTTimeSpecGetNano(&ObjInfo1.AccessTime) / 1000 == RTTimeSpecGetNano(&ObjInfo0.AccessTime) / 1000,
995	("%s, expected %s", RTTimeSpecToString(&ObjInfo1.AccessTime, sz1, sizeof(sz1)),
996	RTTimeSpecToString(&ObjInfo0.AccessTime, sz2, sizeof(sz2))));
997
998	/* Modify access time: */
999	RTTESTI_CHECK_RC(RTFileSetTimes(hFile1, &Time1, NULL, NULL, NULL), VINF_SUCCESS);
1000	RTFSOBJINFO ObjInfo2 = {0};
1001	RTTESTI_CHECK_RC(RTFileQueryInfo(hFile1, &ObjInfo2, RTFSOBJATTRADD_NOTHING), VINF_SUCCESS);
1002	RTTESTI_CHECK((RTTimeSpecGetSeconds(&ObjInfo2.AccessTime) >> 2) == (RTTimeSpecGetSeconds(&Time1) >> 2));
1003	RTTESTI_CHECK(RTTimeSpecGetNano(&ObjInfo2.ModificationTime) / 1000 == RTTimeSpecGetNano(&ObjInfo1.ModificationTime) / 1000);
1004
1005	/* Benchmark it: */
1006	PROFILE_FN(RTFileSetTimes(hFile1, NULL, iIteration & 1 ? &Time1 : &Time2, NULL, NULL), g_nsTestRun, "RTFileSetTimes");
1007
1008	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
1009	}
1010
1011
1012	void fsPerfStat(void)
1013	{
1014	RTTestISub("stat");
1015	RTFSOBJINFO ObjInfo;
1016
1017	/* Non-existing files. */
1018	RTTESTI_CHECK_RC(RTPathQueryInfoEx(InEmptyDir(RT_STR_TUPLE("no-such-file")),
1019	&ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK), VERR_FILE_NOT_FOUND);
1020	RTTESTI_CHECK_RC(RTPathQueryInfoEx(InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file")),
1021	&ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK), FSPERF_VERR_PATH_NOT_FOUND);
1022	RTTESTI_CHECK_RC(RTPathQueryInfoEx(InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file")),
1023	&ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK), VERR_PATH_NOT_FOUND);
1024
1025	/* Shallow: */
1026	RTFILE hFile1;
1027	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file3")),
1028	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
1029	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
1030
1031	PROFILE_FN(RTPathQueryInfoEx(g_szDir, &ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK), g_nsTestRun,
1032	"RTPathQueryInfoEx/NOTHING");
1033	PROFILE_FN(RTPathQueryInfoEx(g_szDir, &ObjInfo, RTFSOBJATTRADD_UNIX, RTPATH_F_ON_LINK), g_nsTestRun,
1034	"RTPathQueryInfoEx/UNIX");
1035
1036
1037	/* Deep: */
1038	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDeepDir(RT_STR_TUPLE("file3")),
1039	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
1040	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
1041
1042	PROFILE_FN(RTPathQueryInfoEx(g_szDeepDir, &ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK), g_nsTestRun,
1043	"RTPathQueryInfoEx/deep/NOTHING");
1044	PROFILE_FN(RTPathQueryInfoEx(g_szDeepDir, &ObjInfo, RTFSOBJATTRADD_UNIX, RTPATH_F_ON_LINK), g_nsTestRun,
1045	"RTPathQueryInfoEx/deep/UNIX");
1046
1047	/* Manytree: */
1048	char szPath[RTPATH_MAX];
1049	PROFILE_MANYTREE_FN(szPath, RTPathQueryInfoEx(szPath, &ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK),
1050	1, g_nsTestRun, "RTPathQueryInfoEx/manytree/NOTHING");
1051	PROFILE_MANYTREE_FN(szPath, RTPathQueryInfoEx(szPath, &ObjInfo, RTFSOBJATTRADD_UNIX, RTPATH_F_ON_LINK),
1052	1, g_nsTestRun, "RTPathQueryInfoEx/manytree/UNIX");
1053	}
1054
1055
1056	void fsPerfChmod(void)
1057	{
1058	RTTestISub("chmod");
1059
1060	/* Non-existing files. */
1061	RTTESTI_CHECK_RC(RTPathSetMode(InEmptyDir(RT_STR_TUPLE("no-such-file")), 0665),
1062	VERR_FILE_NOT_FOUND);
1063	RTTESTI_CHECK_RC(RTPathSetMode(InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file")), 0665),
1064	FSPERF_VERR_PATH_NOT_FOUND);
1065	RTTESTI_CHECK_RC(RTPathSetMode(InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file")), 0665), VERR_PATH_NOT_FOUND);
1066
1067	/* Shallow: */
1068	RTFILE hFile1;
1069	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file14")),
1070	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
1071	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
1072
1073	RTFSOBJINFO ObjInfo;
1074	RTTESTI_CHECK_RC(RTPathQueryInfoEx(g_szDir, &ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK), VINF_SUCCESS);
1075	RTFMODE const fEvenMode = (ObjInfo.Attr.fMode & ~RTFS_UNIX_ALL_ACCESS_PERMS) \| RTFS_DOS_READONLY \| 0400;
1076	RTFMODE const fOddMode = (ObjInfo.Attr.fMode & ~(RTFS_UNIX_ALL_ACCESS_PERMS \| RTFS_DOS_READONLY)) \| 0640;
1077	PROFILE_FN(RTPathSetMode(g_szDir, iIteration & 1 ? fOddMode : fEvenMode), g_nsTestRun, "RTPathSetMode");
1078	RTPathSetMode(g_szDir, ObjInfo.Attr.fMode);
1079
1080	/* Deep: */
1081	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDeepDir(RT_STR_TUPLE("file14")),
1082	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
1083	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
1084
1085	PROFILE_FN(RTPathSetMode(g_szDeepDir, iIteration & 1 ? fOddMode : fEvenMode), g_nsTestRun, "RTPathSetMode/deep");
1086	RTPathSetMode(g_szDeepDir, ObjInfo.Attr.fMode);
1087
1088	/* Manytree: */
1089	char szPath[RTPATH_MAX];
1090	PROFILE_MANYTREE_FN(szPath, RTPathSetMode(szPath, iIteration & 1 ? fOddMode : fEvenMode), 1, g_nsTestRun,
1091	"RTPathSetMode/manytree");
1092	DO_MANYTREE_FN(szPath, RTPathSetMode(szPath, ObjInfo.Attr.fMode));
1093	}
1094
1095
1096	void fsPerfUtimes(void)
1097	{
1098	RTTestISub("utimes");
1099
1100	RTTIMESPEC Time1;
1101	RTTimeNow(&Time1);
1102	RTTIMESPEC Time2 = Time1;
1103	RTTimeSpecSubSeconds(&Time2, 3636);
1104
1105	/* Non-existing files. */
1106	RTTESTI_CHECK_RC(RTPathSetTimesEx(InEmptyDir(RT_STR_TUPLE("no-such-file")), NULL, &Time1, NULL, NULL, RTPATH_F_ON_LINK),
1107	VERR_FILE_NOT_FOUND);
1108	RTTESTI_CHECK_RC(RTPathSetTimesEx(InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file")),
1109	NULL, &Time1, NULL, NULL, RTPATH_F_ON_LINK),
1110	FSPERF_VERR_PATH_NOT_FOUND);
1111	RTTESTI_CHECK_RC(RTPathSetTimesEx(InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file")),
1112	NULL, &Time1, NULL, NULL, RTPATH_F_ON_LINK),
1113	VERR_PATH_NOT_FOUND);
1114
1115	/* Shallow: */
1116	RTFILE hFile1;
1117	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file15")),
1118	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
1119	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
1120
1121	RTFSOBJINFO ObjInfo0 = {0};
1122	RTTESTI_CHECK_RC(RTPathQueryInfoEx(g_szDir, &ObjInfo0, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK), VINF_SUCCESS);
1123
1124	/* Modify modification time: */
1125	RTTESTI_CHECK_RC(RTPathSetTimesEx(g_szDir, NULL, &Time2, NULL, NULL, RTPATH_F_ON_LINK), VINF_SUCCESS);
1126	RTFSOBJINFO ObjInfo1;
1127	RTTESTI_CHECK_RC(RTPathQueryInfoEx(g_szDir, &ObjInfo1, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK), VINF_SUCCESS);
1128	RTTESTI_CHECK((RTTimeSpecGetSeconds(&ObjInfo1.ModificationTime) >> 2) == (RTTimeSpecGetSeconds(&Time2) >> 2));
1129	RTTESTI_CHECK(RTTimeSpecGetNano(&ObjInfo1.AccessTime) / 1000 == RTTimeSpecGetNano(&ObjInfo0.AccessTime) / 1000 /* posix timeval */);
1130
1131	/* Modify access time: */
1132	RTTESTI_CHECK_RC(RTPathSetTimesEx(g_szDir, &Time1, NULL, NULL, NULL, RTPATH_F_ON_LINK), VINF_SUCCESS);
1133	RTFSOBJINFO ObjInfo2 = {0};
1134	RTTESTI_CHECK_RC(RTPathQueryInfoEx(g_szDir, &ObjInfo2, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK), VINF_SUCCESS);
1135	RTTESTI_CHECK((RTTimeSpecGetSeconds(&ObjInfo2.AccessTime) >> 2) == (RTTimeSpecGetSeconds(&Time1) >> 2));
1136	RTTESTI_CHECK(RTTimeSpecGetNano(&ObjInfo2.ModificationTime) / 1000 == RTTimeSpecGetNano(&ObjInfo1.ModificationTime) / 1000 /* posix timeval */);
1137
1138	/* Profile shallow: */
1139	PROFILE_FN(RTPathSetTimesEx(g_szDir, iIteration & 1 ? &Time1 : &Time2, iIteration & 1 ? &Time2 : &Time1,
1140	NULL, NULL, RTPATH_F_ON_LINK),
1141	g_nsTestRun, "RTPathSetTimesEx");
1142
1143	/* Deep: */
1144	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDeepDir(RT_STR_TUPLE("file15")),
1145	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
1146	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
1147
1148	PROFILE_FN(RTPathSetTimesEx(g_szDeepDir, iIteration & 1 ? &Time1 : &Time2, iIteration & 1 ? &Time2 : &Time1,
1149	NULL, NULL, RTPATH_F_ON_LINK),
1150	g_nsTestRun, "RTPathSetTimesEx/deep");
1151
1152	/* Manytree: */
1153	char szPath[RTPATH_MAX];
1154	PROFILE_MANYTREE_FN(szPath, RTPathSetTimesEx(szPath, iIteration & 1 ? &Time1 : &Time2, iIteration & 1 ? &Time2 : &Time1,
1155	NULL, NULL, RTPATH_F_ON_LINK),
1156	1, g_nsTestRun, "RTPathSetTimesEx/manytree");
1157	}
1158
1159
1160	DECL_FORCE_INLINE(int) fsPerfRenameMany(const char *pszFile, uint32_t iIteration)
1161	{
1162	char szRenamed[RTPATH_MAX];
1163	strcat(strcpy(szRenamed, pszFile), "-renamed");
1164	if (!(iIteration & 1))
1165	return RTPathRename(pszFile, szRenamed, 0);
1166	return RTPathRename(szRenamed, pszFile, 0);
1167	}
1168
1169
1170	void fsPerfRename(void)
1171	{
1172	RTTestISub("rename");
1173	char szPath[RTPATH_MAX];
1174
1175	/** @todo rename directories too! */
1176	/** @todo check overwriting files and directoris (empty ones should work on
1177	* unix). */
1178
1179	/* Non-existing files. */
1180	strcpy(szPath, InEmptyDir(RT_STR_TUPLE("other-no-such-file")));
1181	RTTESTI_CHECK_RC(RTPathRename(InEmptyDir(RT_STR_TUPLE("no-such-file")), szPath, 0), VERR_FILE_NOT_FOUND);
1182	strcpy(szPath, InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "other-no-such-file")));
1183	RTTESTI_CHECK_RC(RTPathRename(InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file")), szPath, 0),
1184	FSPERF_VERR_PATH_NOT_FOUND);
1185	strcpy(szPath, InEmptyDir(RT_STR_TUPLE("other-no-such-file")));
1186	RTTESTI_CHECK_RC(RTPathRename(InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file")), szPath, 0), VERR_PATH_NOT_FOUND);
1187
1188	RTFILE hFile1;
1189	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file16")),
1190	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
1191	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
1192	strcat(strcpy(szPath, g_szDir), "-no-such-dir" RTPATH_SLASH_STR "file16");
1193	RTTESTI_CHECK_RC(RTPathRename(szPath, g_szDir, 0), FSPERF_VERR_PATH_NOT_FOUND);
1194	RTTESTI_CHECK_RC(RTPathRename(g_szDir, szPath, 0), FSPERF_VERR_PATH_NOT_FOUND);
1195
1196	/* Shallow: */
1197	strcat(strcpy(szPath, g_szDir), "-other");
1198	PROFILE_FN(RTPathRename(iIteration & 1 ? szPath : g_szDir, iIteration & 1 ? g_szDir : szPath, 0), g_nsTestRun, "RTPathRename");
1199
1200	/* Deep: */
1201	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDeepDir(RT_STR_TUPLE("file15")),
1202	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
1203	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
1204
1205	strcat(strcpy(szPath, g_szDeepDir), "-other");
1206	PROFILE_FN(RTPathRename(iIteration & 1 ? szPath : g_szDeepDir, iIteration & 1 ? g_szDeepDir : szPath, 0),
1207	g_nsTestRun, "RTPathRename/deep");
1208
1209	/* Manytree: */
1210	PROFILE_MANYTREE_FN(szPath, fsPerfRenameMany(szPath, iIteration), 2, g_nsTestRun, "RTPathRename/manytree");
1211	}
1212
1213
1214	DECL_FORCE_INLINE(int) fsPerfOpenClose(const char *pszDir)
1215	{
1216	RTDIR hDir;
1217	RTTESTI_CHECK_RC_RET(RTDirOpen(&hDir, pszDir), VINF_SUCCESS, rcCheck);
1218	RTTESTI_CHECK_RC(RTDirClose(hDir), VINF_SUCCESS);
1219	return VINF_SUCCESS;
1220	}
1221
1222
1223	void vsPerfDirOpen(void)
1224	{
1225	RTTestISub("dir open");
1226	RTDIR hDir;
1227
1228	/*
1229	* Non-existing files.
1230	*/
1231	RTTESTI_CHECK_RC(RTDirOpen(&hDir, InEmptyDir(RT_STR_TUPLE("no-such-file"))), VERR_FILE_NOT_FOUND);
1232	RTTESTI_CHECK_RC(RTDirOpen(&hDir, InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file"))), FSPERF_VERR_PATH_NOT_FOUND);
1233	RTTESTI_CHECK_RC(RTDirOpen(&hDir, InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file"))), VERR_PATH_NOT_FOUND);
1234
1235	/*
1236	* Check that open + close works.
1237	*/
1238	g_szEmptyDir[g_cchEmptyDir] = '\0';
1239	RTTESTI_CHECK_RC_RETV(RTDirOpen(&hDir, g_szEmptyDir), VINF_SUCCESS);
1240	RTTESTI_CHECK_RC(RTDirClose(hDir), VINF_SUCCESS);
1241
1242
1243	/*
1244	* Profile empty dir and dir with many files.
1245	*/
1246	g_szEmptyDir[g_cchEmptyDir] = '\0';
1247	PROFILE_FN(fsPerfOpenClose(g_szEmptyDir), g_nsTestRun, "RTDirOpen/Close empty");
1248	if (g_fManyFiles)
1249	{
1250	InDir(RT_STR_TUPLE("manyfiles"));
1251	PROFILE_FN(fsPerfOpenClose(g_szDir), g_nsTestRun, "RTDirOpen/Close manyfiles");
1252	}
1253	}
1254
1255
1256	DECL_FORCE_INLINE(int) fsPerfEnumEmpty(void)
1257	{
1258	RTDIR hDir;
1259	g_szEmptyDir[g_cchEmptyDir] = '\0';
1260	RTTESTI_CHECK_RC_RET(RTDirOpen(&hDir, g_szEmptyDir), VINF_SUCCESS, rcCheck);
1261
1262	RTDIRENTRY Entry;
1263	RTTESTI_CHECK_RC(RTDirRead(hDir, &Entry, NULL), VINF_SUCCESS);
1264	RTTESTI_CHECK_RC(RTDirRead(hDir, &Entry, NULL), VINF_SUCCESS);
1265	RTTESTI_CHECK_RC(RTDirRead(hDir, &Entry, NULL), VERR_NO_MORE_FILES);
1266
1267	RTTESTI_CHECK_RC(RTDirClose(hDir), VINF_SUCCESS);
1268	return VINF_SUCCESS;
1269	}
1270
1271
1272	DECL_FORCE_INLINE(int) fsPerfEnumManyFiles(void)
1273	{
1274	RTDIR hDir;
1275	RTTESTI_CHECK_RC_RET(RTDirOpen(&hDir, InDir(RT_STR_TUPLE("manyfiles"))), VINF_SUCCESS, rcCheck);
1276	uint32_t cLeft = g_cManyFiles + 2;
1277	for (;;)
1278	{
1279	RTDIRENTRY Entry;
1280	if (cLeft > 0)
1281	RTTESTI_CHECK_RC_BREAK(RTDirRead(hDir, &Entry, NULL), VINF_SUCCESS);
1282	else
1283	{
1284	RTTESTI_CHECK_RC(RTDirRead(hDir, &Entry, NULL), VERR_NO_MORE_FILES);
1285	break;
1286	}
1287	cLeft--;
1288	}
1289	RTTESTI_CHECK_RC(RTDirClose(hDir), VINF_SUCCESS);
1290	return VINF_SUCCESS;
1291	}
1292
1293
1294	void vsPerfDirEnum(void)
1295	{
1296	RTTestISub("dir enum");
1297	RTDIR hDir;
1298
1299	/*
1300	* The empty directory.
1301	*/
1302	g_szEmptyDir[g_cchEmptyDir] = '\0';
1303	RTTESTI_CHECK_RC_RETV(RTDirOpen(&hDir, g_szEmptyDir), VINF_SUCCESS);
1304
1305	uint32_t fDots = 0;
1306	RTDIRENTRY Entry;
1307	RTTESTI_CHECK_RC(RTDirRead(hDir, &Entry, NULL), VINF_SUCCESS);
1308	RTTESTI_CHECK(RTDirEntryIsStdDotLink(&Entry));
1309	fDots \|= RT_BIT_32(Entry.cbName - 1);
1310
1311	RTTESTI_CHECK_RC(RTDirRead(hDir, &Entry, NULL), VINF_SUCCESS);
1312	RTTESTI_CHECK(RTDirEntryIsStdDotLink(&Entry));
1313	fDots \|= RT_BIT_32(Entry.cbName - 1);
1314	RTTESTI_CHECK(fDots == 3);
1315
1316	RTTESTI_CHECK_RC(RTDirRead(hDir, &Entry, NULL), VERR_NO_MORE_FILES);
1317
1318	RTTESTI_CHECK_RC(RTDirClose(hDir), VINF_SUCCESS);
1319
1320	/*
1321	* The directory with many files in it.
1322	*/
1323	if (g_fManyFiles)
1324	{
1325	fDots = 0;
1326	uint32_t const cBitmap = RT_ALIGN_32(g_cManyFiles, 64);
1327	void *pvBitmap = alloca(cBitmap / 8);
1328	RT_BZERO(pvBitmap, cBitmap / 8);
1329	for (uint32_t i = g_cManyFiles; i < cBitmap; i++)
1330	ASMBitSet(pvBitmap, i);
1331
1332	uint32_t cFiles = 0;
1333	RTTESTI_CHECK_RC_RETV(RTDirOpen(&hDir, InDir(RT_STR_TUPLE("manyfiles"))), VINF_SUCCESS);
1334	for (;;)
1335	{
1336	int rc = RTDirRead(hDir, &Entry, NULL);
1337	if (rc == VINF_SUCCESS)
1338	{
1339	if (Entry.szName[0] == '.')
1340	{
1341	if (Entry.szName[1] == '.')
1342	{
1343	RTTESTI_CHECK(!(fDots & 2));
1344	fDots \|= 2;
1345	}
1346	else
1347	{
1348	RTTESTI_CHECK(Entry.szName[1] == '\0');
1349	RTTESTI_CHECK(!(fDots & 1));
1350	fDots \|= 1;
1351	}
1352	}
1353	else
1354	{
1355	uint32_t iFile = UINT32_MAX;
1356	RTTESTI_CHECK_RC(RTStrToUInt32Full(Entry.szName, 10, &iFile), VINF_SUCCESS);
1357	if ( iFile < g_cManyFiles
1358	&& !ASMBitTest(pvBitmap, iFile))
1359	{
1360	ASMBitSet(pvBitmap, iFile);
1361	cFiles++;
1362	}
1363	else
1364	RTTestFailed(g_hTest, "line %u: iFile=%u g_cManyFiles=%u\n", __LINE__, iFile, g_cManyFiles);
1365	}
1366	}
1367	else if (rc == VERR_NO_MORE_FILES)
1368	break;
1369	else
1370	{
1371	RTTestFailed(g_hTest, "RTDirRead failed enumerating manyfiles: %Rrc\n", rc);
1372	RTDirClose(hDir);
1373	return;
1374	}
1375	}
1376	RTTESTI_CHECK_RC(RTDirClose(hDir), VINF_SUCCESS);
1377	RTTESTI_CHECK(fDots == 3);
1378	RTTESTI_CHECK(cFiles == g_cManyFiles);
1379	RTTESTI_CHECK(ASMMemIsAllU8(pvBitmap, cBitmap / 8, 0xff));
1380	}
1381
1382	/*
1383	* Profile.
1384	*/
1385	PROFILE_FN(fsPerfEnumEmpty(),g_nsTestRun, "RTDirOpen/Read/Close empty");
1386	if (g_fManyFiles)
1387	PROFILE_FN(fsPerfEnumManyFiles(), g_nsTestRun, "RTDirOpen/Read/Close manyfiles");
1388	}
1389
1390
1391	void fsPerfMkRmDir(void)
1392	{
1393	RTTestISub("mkdir/rmdir");
1394
1395	/* Non-existing directories: */
1396	RTTESTI_CHECK_RC(RTDirRemove(InEmptyDir(RT_STR_TUPLE("no-such-dir"))), VERR_FILE_NOT_FOUND);
1397	RTTESTI_CHECK_RC(RTDirRemove(InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file"))), FSPERF_VERR_PATH_NOT_FOUND);
1398	RTTESTI_CHECK_RC(RTDirRemove(InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file"))), VERR_PATH_NOT_FOUND);
1399	RTTESTI_CHECK_RC(RTDirCreate(InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file")), 0755, 0), FSPERF_VERR_PATH_NOT_FOUND);
1400	RTTESTI_CHECK_RC(RTDirCreate(InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file")), 0755, 0), VERR_PATH_NOT_FOUND);
1401
1402	/** @todo check what happens if non-final path component isn't a directory. unix
1403	* should return ENOTDIR and IPRT translates that to VERR_PATH_NOT_FOUND.
1404	* Curious what happens on windows. */
1405
1406	/* Already existing directories and files: */
1407	RTTESTI_CHECK_RC(RTDirCreate(InEmptyDir(RT_STR_TUPLE(".")), 0755, 0), VERR_ALREADY_EXISTS);
1408	RTTESTI_CHECK_RC(RTDirCreate(InEmptyDir(RT_STR_TUPLE("..")), 0755, 0), VERR_ALREADY_EXISTS);
1409
1410	/* Remove directory with subdirectories: */
1411	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
1412	RTTESTI_CHECK_RC(RTDirRemove(InDir(RT_STR_TUPLE("."))), VERR_DIR_NOT_EMPTY);
1413	#else
1414	RTTESTI_CHECK_RC(RTDirRemove(InDir(RT_STR_TUPLE("."))), VERR_INVALID_PARAMETER); /* EINVAL for '.' */
1415	#endif
1416	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
1417	int rc = RTDirRemove(InDir(RT_STR_TUPLE("..")));
1418	# ifdef RT_OS_WINDOWS
1419	if (rc != VERR_DIR_NOT_EMPTY /ntfs root/ && rc != VERR_SHARING_VIOLATION /ntfs weird/)
1420	RTTestIFailed("RTDirRemove(%s) -> %Rrc, expected VERR_DIR_NOT_EMPTY or VERR_SHARING_VIOLATION", g_szDir, rc);
1421	# else
1422	if (rc != VERR_DIR_NOT_EMPTY && rc != VERR_RESOURCE_BUSY /IPRT/kLIBC fun/)
1423	RTTestIFailed("RTDirRemove(%s) -> %Rrc, expected VERR_DIR_NOT_EMPTY or VERR_RESOURCE_BUSY", g_szDir, rc);
1424
1425	APIRET orc;
1426	RTTESTI_CHECK_MSG((orc = DosDelete((PCSZ)InEmptyDir(RT_STR_TUPLE(".")))) == ERROR_ACCESS_DENIED,
1427	("DosDelete(%s) -> %u, expected %u\n", g_szEmptyDir, orc, ERROR_ACCESS_DENIED));
1428	RTTESTI_CHECK_MSG((orc = DosDelete((PCSZ)InEmptyDir(RT_STR_TUPLE("..")))) == ERROR_ACCESS_DENIED,
1429	("DosDelete(%s) -> %u, expected %u\n", g_szEmptyDir, orc, ERROR_ACCESS_DENIED));
1430	RTTESTI_CHECK_MSG((orc = DosDelete((PCSZ)InEmptyDir(RT_STR_TUPLE("")))) == ERROR_PATH_NOT_FOUND, /* a little weird (fsrouter) */
1431	("DosDelete(%s) -> %u, expected %u\n", g_szEmptyDir, orc, ERROR_PATH_NOT_FOUND));
1432
1433	# endif
1434	#else
1435	RTTESTI_CHECK_RC(RTDirRemove(InDir(RT_STR_TUPLE(".."))), VERR_DIR_NOT_EMPTY);
1436	#endif
1437	RTTESTI_CHECK_RC(RTDirRemove(InDir(RT_STR_TUPLE(""))), VERR_DIR_NOT_EMPTY);
1438
1439	/* Create a directory and remove it: */
1440	RTTESTI_CHECK_RC(RTDirCreate(InDir(RT_STR_TUPLE("subdir-1")), 0755, 0), VINF_SUCCESS);
1441	RTTESTI_CHECK_RC(RTDirRemove(g_szDir), VINF_SUCCESS);
1442
1443	/* Create a file and try remove it or create a directory with the same name: */
1444	RTFILE hFile1;
1445	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file18")),
1446	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
1447	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
1448	RTTESTI_CHECK_RC(RTDirRemove(g_szDir), VERR_NOT_A_DIRECTORY);
1449	RTTESTI_CHECK_RC(RTDirCreate(g_szDir, 0755, 0), VERR_ALREADY_EXISTS);
1450	RTTESTI_CHECK_RC(RTDirCreate(InDir(RT_STR_TUPLE("file18" RTPATH_SLASH_STR "subdir")), 0755, 0), VERR_PATH_NOT_FOUND);
1451
1452	/*
1453	* Profile alternately creating and removing a bunch of directories.
1454	*/
1455	RTTESTI_CHECK_RC_RETV(RTDirCreate(InDir(RT_STR_TUPLE("subdir-2")), 0755, 0), VINF_SUCCESS);
1456	size_t cchDir = strlen(g_szDir);
1457	g_szDir[cchDir++] = RTPATH_SLASH;
1458	g_szDir[cchDir++] = 's';
1459
1460	uint32_t cCreated = 0;
1461	uint64_t nsCreate = 0;
1462	uint64_t nsRemove = 0;
1463	for (;;)
1464	{
1465	/* Create a bunch: */
1466	uint64_t nsStart = RTTimeNanoTS();
1467	for (uint32_t i = 0; i < 998; i++)
1468	{
1469	RTStrFormatU32(&g_szDir[cchDir], sizeof(g_szDir) - cchDir, i, 10, 3, 3, RTSTR_F_ZEROPAD);
1470	RTTESTI_CHECK_RC_RETV(RTDirCreate(g_szDir, 0755, 0), VINF_SUCCESS);
1471	}
1472	nsCreate += RTTimeNanoTS() - nsStart;
1473	cCreated += 998;
1474
1475	/* Remove the bunch: */
1476	nsStart = RTTimeNanoTS();
1477	for (uint32_t i = 0; i < 998; i++)
1478	{
1479	RTStrFormatU32(&g_szDir[cchDir], sizeof(g_szDir) - cchDir, i, 10, 3, 3, RTSTR_F_ZEROPAD);
1480	RTTESTI_CHECK_RC_RETV(RTDirRemove(g_szDir), VINF_SUCCESS);
1481	}
1482	nsRemove = RTTimeNanoTS() - nsStart;
1483
1484	/* Check if we got time for another round: */
1485	if ( ( nsRemove >= g_nsTestRun
1486	&& nsCreate >= g_nsTestRun)
1487	\|\| nsCreate + nsRemove >= g_nsTestRun * 3)
1488	break;
1489	}
1490	RTTestIValue("RTDirCreate", nsCreate / cCreated, RTTESTUNIT_NS_PER_OCCURRENCE);
1491	RTTestIValue("RTDirRemove", nsRemove / cCreated, RTTESTUNIT_NS_PER_OCCURRENCE);
1492	}
1493
1494
1495	void fsPerfStatVfs(void)
1496	{
1497	RTTestISub("statvfs");
1498
1499	g_szEmptyDir[g_cchEmptyDir] = '\0';
1500	RTFOFF cbTotal;
1501	RTFOFF cbFree;
1502	uint32_t cbBlock;
1503	uint32_t cbSector;
1504	RTTESTI_CHECK_RC(RTFsQuerySizes(g_szEmptyDir, &cbTotal, &cbFree, &cbBlock, &cbSector), VINF_SUCCESS);
1505
1506	uint32_t uSerial;
1507	RTTESTI_CHECK_RC(RTFsQuerySerial(g_szEmptyDir, &uSerial), VINF_SUCCESS);
1508
1509	RTFSPROPERTIES Props;
1510	RTTESTI_CHECK_RC(RTFsQueryProperties(g_szEmptyDir, &Props), VINF_SUCCESS);
1511
1512	RTFSTYPE enmType;
1513	RTTESTI_CHECK_RC(RTFsQueryType(g_szEmptyDir, &enmType), VINF_SUCCESS);
1514
1515	g_szDeepDir[g_cchDeepDir] = '\0';
1516	PROFILE_FN(RTFsQuerySizes(g_szEmptyDir, &cbTotal, &cbFree, &cbBlock, &cbSector), g_nsTestRun, "RTFsQuerySize/empty");
1517	PROFILE_FN(RTFsQuerySizes(g_szDeepDir, &cbTotal, &cbFree, &cbBlock, &cbSector), g_nsTestRun, "RTFsQuerySize/deep");
1518	}
1519
1520
1521	void fsPerfRm(void)
1522	{
1523	RTTestISub("rm");
1524
1525	/* Non-existing files. */
1526	RTTESTI_CHECK_RC(RTFileDelete(InEmptyDir(RT_STR_TUPLE("no-such-file"))), VERR_FILE_NOT_FOUND);
1527	RTTESTI_CHECK_RC(RTFileDelete(InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file"))), FSPERF_VERR_PATH_NOT_FOUND);
1528	RTTESTI_CHECK_RC(RTFileDelete(InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file"))), VERR_PATH_NOT_FOUND);
1529
1530	/* Directories: */
1531	#if defined(RT_OS_WINDOWS)
1532	RTTESTI_CHECK_RC(RTFileDelete(InEmptyDir(RT_STR_TUPLE("."))), VERR_ACCESS_DENIED);
1533	RTTESTI_CHECK_RC(RTFileDelete(InEmptyDir(RT_STR_TUPLE(".."))), VERR_ACCESS_DENIED);
1534	RTTESTI_CHECK_RC(RTFileDelete(InEmptyDir(RT_STR_TUPLE(""))), VERR_ACCESS_DENIED);
1535	#elif defined(RT_OS_DARWIN) /* unlink() on xnu 16.7.0 is behaviour totally werid: */
1536	RTTESTI_CHECK_RC(RTFileDelete(InEmptyDir(RT_STR_TUPLE("."))), VERR_INVALID_PARAMETER);
1537	RTTESTI_CHECK_RC(RTFileDelete(InEmptyDir(RT_STR_TUPLE(".."))), VINF_SUCCESS /WTF?!?/);
1538	RTTESTI_CHECK_RC(RTFileDelete(InEmptyDir(RT_STR_TUPLE(""))), VERR_ACCESS_DENIED);
1539	#elif defined(RT_OS_OS2) /* OS/2 has a busted unlink, it think it should remove directories too. */
1540	RTTESTI_CHECK_RC(RTFileDelete(InDir(RT_STR_TUPLE("."))), VERR_DIR_NOT_EMPTY);
1541	int rc = RTFileDelete(InDir(RT_STR_TUPLE("..")));
1542	if (rc != VERR_DIR_NOT_EMPTY && rc != VERR_FILE_NOT_FOUND && rc != VERR_RESOURCE_BUSY)
1543	RTTestIFailed("RTFileDelete(%s) -> %Rrc, expected VERR_DIR_NOT_EMPTY or VERR_FILE_NOT_FOUND or VERR_RESOURCE_BUSY", g_szDir, rc);
1544	RTTESTI_CHECK_RC(RTFileDelete(InDir(RT_STR_TUPLE(""))), VERR_DIR_NOT_EMPTY);
1545	APIRET orc;
1546	RTTESTI_CHECK_MSG((orc = DosDelete((PCSZ)InEmptyDir(RT_STR_TUPLE(".")))) == ERROR_ACCESS_DENIED,
1547	("DosDelete(%s) -> %u, expected %u\n", g_szEmptyDir, orc, ERROR_ACCESS_DENIED));
1548	RTTESTI_CHECK_MSG((orc = DosDelete((PCSZ)InEmptyDir(RT_STR_TUPLE("..")))) == ERROR_ACCESS_DENIED,
1549	("DosDelete(%s) -> %u, expected %u\n", g_szEmptyDir, orc, ERROR_ACCESS_DENIED));
1550	RTTESTI_CHECK_MSG((orc = DosDelete((PCSZ)InEmptyDir(RT_STR_TUPLE("")))) == ERROR_PATH_NOT_FOUND,
1551	("DosDelete(%s) -> %u, expected %u\n", g_szEmptyDir, orc, ERROR_PATH_NOT_FOUND)); /* hpfs+jfs; weird. */
1552
1553	#else
1554	RTTESTI_CHECK_RC(RTFileDelete(InEmptyDir(RT_STR_TUPLE("."))), VERR_IS_A_DIRECTORY);
1555	RTTESTI_CHECK_RC(RTFileDelete(InEmptyDir(RT_STR_TUPLE(".."))), VERR_IS_A_DIRECTORY);
1556	RTTESTI_CHECK_RC(RTFileDelete(InEmptyDir(RT_STR_TUPLE(""))), VERR_IS_A_DIRECTORY);
1557	#endif
1558
1559	/* Shallow: */
1560	RTFILE hFile1;
1561	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file19")),
1562	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
1563	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
1564	RTTESTI_CHECK_RC(RTFileDelete(g_szDir), VINF_SUCCESS);
1565	RTTESTI_CHECK_RC(RTFileDelete(g_szDir), VERR_FILE_NOT_FOUND);
1566
1567	if (g_fManyFiles)
1568	{
1569	/*
1570	* Profile the deletion of the manyfiles content.
1571	*/
1572	{
1573	InDir(RT_STR_TUPLE("manyfiles" RTPATH_SLASH_STR));
1574	size_t const offFilename = strlen(g_szDir);
1575	fsPerfYield();
1576	uint64_t const nsStart = RTTimeNanoTS();
1577	for (uint32_t i = 0; i < g_cManyFiles; i++)
1578	{
1579	RTStrFormatU32(&g_szDir[offFilename], sizeof(g_szDir) - offFilename, i, 10, 5, 5, RTSTR_F_ZEROPAD);
1580	RTTESTI_CHECK_RC_RETV(RTFileDelete(g_szDir), VINF_SUCCESS);
1581	}
1582	uint64_t const cNsElapsed = RTTimeNanoTS() - nsStart;
1583	RTTestIValueF(cNsElapsed, RTTESTUNIT_NS, "Deleted %u empty files from a single directory", g_cManyFiles);
1584	RTTestIValueF(cNsElapsed / g_cManyFiles, RTTESTUNIT_NS_PER_OCCURRENCE, "Delete file (single dir)");
1585	}
1586
1587	/*
1588	* Ditto for the manytree.
1589	*/
1590	{
1591	char szPath[RTPATH_MAX];
1592	uint64_t const nsStart = RTTimeNanoTS();
1593	DO_MANYTREE_FN(szPath, RTTESTI_CHECK_RC_RETV(RTFileDelete(szPath), VINF_SUCCESS));
1594	uint64_t const cNsElapsed = RTTimeNanoTS() - nsStart;
1595	RTTestIValueF(cNsElapsed, RTTESTUNIT_NS, "Deleted %u empty files in tree", g_cManyTreeFiles);
1596	RTTestIValueF(cNsElapsed / g_cManyTreeFiles, RTTESTUNIT_NS_PER_OCCURRENCE, "Delete file (tree)");
1597	}
1598	}
1599	}
1600
1601
1602	void fsPerfChSize(void)
1603	{
1604	RTTestISub("chsize");
1605
1606	/*
1607	* We need some free space to perform this test.
1608	*/
1609	g_szDir[g_cchDir] = '\0';
1610	RTFOFF cbFree = 0;
1611	RTTESTI_CHECK_RC_RETV(RTFsQuerySizes(g_szDir, NULL, &cbFree, NULL, NULL), VINF_SUCCESS);
1612	if (cbFree < _1M)
1613	{
1614	RTTestSkipped(g_hTest, "Insufficent free space: %'RU64 bytes, requires >= 1MB", cbFree);
1615	return;
1616	}
1617
1618	/*
1619	* Create a file and play around with it's size.
1620	* We let the current file position follow the end position as we make changes.
1621	*/
1622	RTFILE hFile1;
1623	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file20")),
1624	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_READWRITE), VINF_SUCCESS);
1625	uint64_t cbFile = UINT64_MAX;
1626	RTTESTI_CHECK_RC(RTFileGetSize(hFile1, &cbFile), VINF_SUCCESS);
1627	RTTESTI_CHECK(cbFile == 0);
1628
1629	uint8_t abBuf[4096];
1630	static uint64_t const s_acbChanges[] =
1631	{
1632	1023, 1024, 1024, 1025, 8192, 11111, _1M, _8M, _8M,
1633	_4M, _2M + 1, _1M - 1, 65537, 65536, 32768, 8000, 7999, 7998, 1024, 1, 0
1634	};
1635	uint64_t cbOld = 0;
1636	for (unsigned i = 0; i < RT_ELEMENTS(s_acbChanges); i++)
1637	{
1638	uint64_t cbNew = s_acbChanges[i];
1639	if (cbNew + _64K >= (uint64_t)cbFree)
1640	continue;
1641
1642	RTTESTI_CHECK_RC(RTFileSetSize(hFile1, cbNew), VINF_SUCCESS);
1643	RTTESTI_CHECK_RC(RTFileGetSize(hFile1, &cbFile), VINF_SUCCESS);
1644	RTTESTI_CHECK_MSG(cbFile == cbNew, ("cbFile=%#RX64 cbNew=%#RX64\n", cbFile, cbNew));
1645
1646	if (cbNew > cbOld)
1647	{
1648	/* Check that the extension is all zeroed: */
1649	uint64_t cbLeft = cbNew - cbOld;
1650	while (cbLeft > 0)
1651	{
1652	memset(abBuf, 0xff, sizeof(abBuf));
1653	size_t cbToRead = sizeof(abBuf);
1654	if (cbToRead > cbLeft)
1655	cbToRead = (size_t)cbLeft;
1656	RTTESTI_CHECK_RC(RTFileRead(hFile1, abBuf, cbToRead, NULL), VINF_SUCCESS);
1657	RTTESTI_CHECK(ASMMemIsZero(abBuf, cbToRead));
1658	cbLeft -= cbToRead;
1659	}
1660	}
1661	else
1662	{
1663	/* Check that reading fails with EOF because current position is now beyond the end: */
1664	RTTESTI_CHECK_RC(RTFileRead(hFile1, abBuf, 1, NULL), VERR_EOF);
1665
1666	/* Keep current position at the end of the file: */
1667	RTTESTI_CHECK_RC(RTFileSeek(hFile1, cbNew, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
1668	}
1669	cbOld = cbNew;
1670	}
1671
1672	/*
1673	* Profile just the file setting operation itself, keeping the changes within
1674	* an allocation unit to avoid needing to adjust the actual (host) FS allocation.
1675	* ASSUMES allocation unit >= 512 and power of two.
1676	*/
1677	RTTESTI_CHECK_RC(RTFileSetSize(hFile1, _64K), VINF_SUCCESS);
1678	PROFILE_FN(RTFileSetSize(hFile1, _64K - (iIteration & 255) - 128), g_nsTestRun, "RTFileSetSize/noalloc");
1679
1680	RTTESTI_CHECK_RC(RTFileSetSize(hFile1, 0), VINF_SUCCESS);
1681	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
1682	RTTESTI_CHECK_RC(RTFileDelete(g_szDir), VINF_SUCCESS);
1683	}
1684
1685
1686	int fsPerfIoPrepFile(RTFILE hFile1, uint64_t cbFile, uint8_t **ppbFree)
1687	{
1688	/*
1689	* Seek to the end - 4K and write the last 4K.
1690	* This should have the effect of filling the whole file with zeros.
1691	*/
1692	RTTESTI_CHECK_RC_RET(RTFileSeek(hFile1, cbFile - _4K, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS, rcCheck);
1693	RTTESTI_CHECK_RC_RET(RTFileWrite(hFile1, g_abRTZero4K, _4K, NULL), VINF_SUCCESS, rcCheck);
1694
1695	/*
1696	* Check that the space we searched across actually is zero filled.
1697	*/
1698	RTTESTI_CHECK_RC_RET(RTFileSeek(hFile1, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS, rcCheck);
1699	size_t cbBuf = _1M;
1700	uint8_t pbBuf = ppbFree = (uint8_t *)RTMemAlloc(cbBuf);
1701	RTTESTI_CHECK_RET(pbBuf != NULL, VERR_NO_MEMORY);
1702	uint64_t cbLeft = cbFile;
1703	while (cbLeft > 0)
1704	{
1705	size_t cbToRead = cbBuf;
1706	if (cbToRead > cbLeft)
1707	cbToRead = (size_t)cbLeft;
1708	pbBuf[cbToRead] = 0xff;
1709
1710	RTTESTI_CHECK_RC_RET(RTFileRead(hFile1, pbBuf, cbToRead, NULL), VINF_SUCCESS, rcCheck);
1711	RTTESTI_CHECK_RET(ASMMemIsZero(pbBuf, cbToRead), VERR_MISMATCH);
1712
1713	cbLeft -= cbToRead;
1714	}
1715
1716	/*
1717	* Fill the file with 0xf6 and insert offset markers with 1KB intervals.
1718	*/
1719	RTTESTI_CHECK_RC_RET(RTFileSeek(hFile1, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS, rcCheck);
1720	memset(pbBuf, 0xf6, cbBuf);
1721	cbLeft = cbFile;
1722	uint64_t off = 0;
1723	while (cbLeft > 0)
1724	{
1725	Assert(!(off & (_1K - 1)));
1726	Assert(!(cbBuf & (_1K - 1)));
1727	for (size_t offBuf = 0; offBuf < cbBuf; offBuf += _1K, off += _1K)
1728	(uint64_t )&pbBuf[offBuf] = off;
1729
1730	size_t cbToWrite = cbBuf;
1731	if (cbToWrite > cbLeft)
1732	cbToWrite = (size_t)cbLeft;
1733
1734	RTTESTI_CHECK_RC_RET(RTFileWrite(hFile1, pbBuf, cbToWrite, NULL), VINF_SUCCESS, rcCheck);
1735
1736	cbLeft -= cbToWrite;
1737	}
1738
1739	return VINF_SUCCESS;
1740	}
1741
1742
1743	/**
1744	* Checks the content read from the file fsPerfIoPrepFile() prepared.
1745	*/
1746	bool fsPerfCheckReadBuf(unsigned uLineNo, uint64_t off, uint8_t const *pbBuf, size_t cbBuf, uint8_t bFiller = 0xf6)
1747	{
1748	uint32_t cMismatches = 0;
1749	size_t offBuf = 0;
1750	uint32_t offBlock = (uint32_t)(off & (_1K - 1));
1751	while (offBuf < cbBuf)
1752	{
1753	/*
1754	* Check the offset marker:
1755	*/
1756	if (offBlock < sizeof(uint64_t))
1757	{
1758	RTUINT64U uMarker;
1759	uMarker.u = off + offBuf - offBlock;
1760	unsigned offMarker = offBlock & (sizeof(uint64_t) - 1);
1761	while (offMarker < sizeof(uint64_t) && offBuf < cbBuf)
1762	{
1763	if (uMarker.au8[offMarker] != pbBuf[offBuf])
1764	{
1765	RTTestIFailed("%u: Mismatch at buffer/file offset %#zx/%#RX64: %#x, expected %#x",
1766	uLineNo, offBuf, off + offBuf, pbBuf[offBuf], uMarker.au8[offMarker]);
1767	if (cMismatches++ > 32)
1768	return false;
1769	}
1770	offMarker++;
1771	offBuf++;
1772	}
1773	offBlock = sizeof(uint64_t);
1774	}
1775
1776	/*
1777	* Check the filling:
1778	*/
1779	size_t cbFilling = RT_MIN(_1K - offBlock, cbBuf - offBuf);
1780	if ( cbFilling == 0
1781	\|\| ASMMemIsAllU8(&pbBuf[offBuf], cbFilling, bFiller))
1782	offBuf += cbFilling;
1783	else
1784	{
1785	/* Some mismatch, locate it/them: */
1786	while (cbFilling > 0 && offBuf < cbBuf)
1787	{
1788	if (pbBuf[offBuf] != bFiller)
1789	{
1790	RTTestIFailed("%u: Mismatch at buffer/file offset %#zx/%#RX64: %#x, expected %#04x",
1791	uLineNo, offBuf, off + offBuf, pbBuf[offBuf], bFiller);
1792	if (cMismatches++ > 32)
1793	return false;
1794	}
1795	offBuf++;
1796	cbFilling--;
1797	}
1798	}
1799	offBlock = 0;
1800	}
1801	return cMismatches == 0;
1802	}
1803
1804
1805	/**
1806	* Sets up write buffer with offset markers and fillers.
1807	*/
1808	void fsPerfFillWriteBuf(uint64_t off, uint8_t *pbBuf, size_t cbBuf, uint8_t bFiller = 0xf6)
1809	{
1810	uint32_t offBlock = (uint32_t)(off & (_1K - 1));
1811	while (cbBuf > 0)
1812	{
1813	/* The marker. */
1814	if (offBlock < sizeof(uint64_t))
1815	{
1816	RTUINT64U uMarker;
1817	uMarker.u = off + offBlock;
1818	if (cbBuf > sizeof(uMarker) - offBlock)
1819	{
1820	memcpy(pbBuf, &uMarker.au8[offBlock], sizeof(uMarker) - offBlock);
1821	pbBuf += sizeof(uMarker) - offBlock;
1822	cbBuf -= sizeof(uMarker) - offBlock;
1823	off += sizeof(uMarker) - offBlock;
1824	}
1825	else
1826	{
1827	memcpy(pbBuf, &uMarker.au8[offBlock], cbBuf);
1828	return;
1829	}
1830	offBlock = sizeof(uint64_t);
1831	}
1832
1833	/* Do the filling. */
1834	size_t cbFilling = RT_MIN(_1K - offBlock, cbBuf);
1835	memset(pbBuf, bFiller, cbFilling);
1836	pbBuf += cbFilling;
1837	cbBuf -= cbFilling;
1838	off += cbFilling;
1839
1840	offBlock = 0;
1841	}
1842	}
1843
1844
1845
1846	void fsPerfIoSeek(RTFILE hFile1, uint64_t cbFile)
1847	{
1848	/*
1849	* Do a bunch of search tests, most which are random.
1850	*/
1851	struct
1852	{
1853	int rc;
1854	uint32_t uMethod;
1855	int64_t offSeek;
1856	uint64_t offActual;
1857
1858	} aSeeks[9 + 64] =
1859	{
1860	{ VINF_SUCCESS, RTFILE_SEEK_BEGIN, 0, 0 },
1861	{ VINF_SUCCESS, RTFILE_SEEK_CURRENT, 0, 0 },
1862	{ VINF_SUCCESS, RTFILE_SEEK_END, 0, cbFile },
1863	{ VINF_SUCCESS, RTFILE_SEEK_CURRENT, -4096, cbFile - 4096 },
1864	{ VINF_SUCCESS, RTFILE_SEEK_CURRENT, 4096 - (int64_t)cbFile, 0 },
1865	{ VINF_SUCCESS, RTFILE_SEEK_END, -(int64_t)cbFile/2, cbFile / 2 + (cbFile & 1) },
1866	{ VINF_SUCCESS, RTFILE_SEEK_CURRENT, -(int64_t)cbFile/2, 0 },
1867	#if defined(RT_OS_WINDOWS)
1868	{ VERR_NEGATIVE_SEEK, RTFILE_SEEK_CURRENT, -1, 0 },
1869	#else
1870	{ VERR_INVALID_PARAMETER, RTFILE_SEEK_CURRENT, -1, 0 },
1871	#endif
1872	{ VINF_SUCCESS, RTFILE_SEEK_CURRENT, 0, 0 },
1873	};
1874
1875	uint64_t offActual = 0;
1876	for (unsigned i = 9; i < RT_ELEMENTS(aSeeks); i++)
1877	{
1878	switch (RTRandU32Ex(RTFILE_SEEK_BEGIN, RTFILE_SEEK_END))
1879	{
1880	default: AssertFailedBreak();
1881	case RTFILE_SEEK_BEGIN:
1882	aSeeks[i].uMethod = RTFILE_SEEK_BEGIN;
1883	aSeeks[i].rc = VINF_SUCCESS;
1884	aSeeks[i].offSeek = RTRandU64Ex(0, cbFile + cbFile / 8);
1885	aSeeks[i].offActual = offActual = aSeeks[i].offSeek;
1886	break;
1887
1888	case RTFILE_SEEK_CURRENT:
1889	aSeeks[i].uMethod = RTFILE_SEEK_CURRENT;
1890	aSeeks[i].rc = VINF_SUCCESS;
1891	aSeeks[i].offSeek = (int64_t)RTRandU64Ex(0, cbFile + cbFile / 8) - (int64_t)offActual;
1892	aSeeks[i].offActual = offActual += aSeeks[i].offSeek;
1893	break;
1894
1895	case RTFILE_SEEK_END:
1896	aSeeks[i].uMethod = RTFILE_SEEK_END;
1897	aSeeks[i].rc = VINF_SUCCESS;
1898	aSeeks[i].offSeek = -(int64_t)RTRandU64Ex(0, cbFile);
1899	aSeeks[i].offActual = offActual = cbFile + aSeeks[i].offSeek;
1900	break;
1901	}
1902	}
1903
1904	for (unsigned iDoReadCheck = 0; iDoReadCheck < 2; iDoReadCheck++)
1905	{
1906	for (uint32_t i = 0; i < RT_ELEMENTS(aSeeks); i++)
1907	{
1908	offActual = UINT64_MAX;
1909	int rc = RTFileSeek(hFile1, aSeeks[i].offSeek, aSeeks[i].uMethod, &offActual);
1910	if (rc != aSeeks[i].rc)
1911	RTTestIFailed("Seek #%u: Expected %Rrc, got %Rrc", i, aSeeks[i].rc, rc);
1912	if (RT_SUCCESS(rc) && offActual != aSeeks[i].offActual)
1913	RTTestIFailed("Seek #%u: offActual %#RX64, expected %#RX64", i, offActual, aSeeks[i].offActual);
1914	if (RT_SUCCESS(rc))
1915	{
1916	uint64_t offTell = RTFileTell(hFile1);
1917	if (offTell != offActual)
1918	RTTestIFailed("Seek #%u: offActual %#RX64, RTFileTell %#RX64", i, offActual, offTell);
1919	}
1920
1921	if (RT_SUCCESS(rc) && offActual + _2K <= cbFile && iDoReadCheck)
1922	{
1923	uint8_t abBuf[_2K];
1924	RTTESTI_CHECK_RC(rc = RTFileRead(hFile1, abBuf, sizeof(abBuf), NULL), VINF_SUCCESS);
1925	if (RT_SUCCESS(rc))
1926	{
1927	size_t offMarker = (size_t)(RT_ALIGN_64(offActual, _1K) - offActual);
1928	uint64_t uMarker = (uint64_t )&abBuf[offMarker]; /** @todo potentially unaligned access */
1929	if (uMarker != offActual + offMarker)
1930	RTTestIFailed("Seek #%u: Invalid marker value (@ %#RX64): %#RX64, expected %#RX64",
1931	i, offActual, uMarker, offActual + offMarker);
1932
1933	RTTESTI_CHECK_RC(RTFileSeek(hFile1, -(int64_t)sizeof(abBuf), RTFILE_SEEK_CURRENT, NULL), VINF_SUCCESS);
1934	}
1935	}
1936	}
1937	}
1938
1939
1940	/*
1941	* Profile seeking relative to the beginning of the file and relative
1942	* to the end. The latter might be more expensive in a SF context.
1943	*/
1944	PROFILE_FN(RTFileSeek(hFile1, iIteration < cbFile ? iIteration : iIteration % cbFile, RTFILE_SEEK_BEGIN, NULL),
1945	g_nsTestRun, "RTFileSeek/BEGIN");
1946	PROFILE_FN(RTFileSeek(hFile1, iIteration < cbFile ? -(int64_t)iIteration : -(int64_t)(iIteration % cbFile), RTFILE_SEEK_END, NULL),
1947	g_nsTestRun, "RTFileSeek/END");
1948
1949	}
1950
1951	#ifdef FSPERF_TEST_SENDFILE
1952
1953	/**
1954	* Send file thread arguments.
1955	*/
1956	typedef struct FSPERFSENDFILEARGS
1957	{
1958	uint64_t offFile;
1959	size_t cbSend;
1960	uint64_t cbSent;
1961	size_t cbBuf;
1962	uint8_t *pbBuf;
1963	uint8_t bFiller;
1964	bool fCheckBuf;
1965	RTSOCKET hSocket;
1966	uint64_t volatile tsThreadDone;
1967	} FSPERFSENDFILEARGS;
1968
1969	/** Thread receiving the bytes from a sendfile() call. */
1970	static DECLCALLBACK(int) fsPerfSendFileThread(RTTHREAD hSelf, void *pvUser)
1971	{
1972	FSPERFSENDFILEARGS pArgs = (FSPERFSENDFILEARGS )pvUser;
1973	int rc = VINF_SUCCESS;
1974
1975	if (pArgs->fCheckBuf)
1976	RTTestSetDefault(g_hTest, NULL);
1977
1978	uint64_t cbReceived = 0;
1979	while (cbReceived < pArgs->cbSent)
1980	{
1981	size_t const cbToRead = RT_MIN(pArgs->cbBuf, pArgs->cbSent - cbReceived);
1982	size_t cbActual = 0;
1983	RTTEST_CHECK_RC_BREAK(g_hTest, rc = RTTcpRead(pArgs->hSocket, pArgs->pbBuf, cbToRead, &cbActual), VINF_SUCCESS);
1984	RTTEST_CHECK_BREAK(g_hTest, cbActual != 0);
1985	RTTEST_CHECK(g_hTest, cbActual <= cbToRead);
1986	if (pArgs->fCheckBuf)
1987	fsPerfCheckReadBuf(__LINE__, pArgs->offFile + cbReceived, pArgs->pbBuf, cbActual, pArgs->bFiller);
1988	cbReceived += cbActual;
1989	}
1990
1991	pArgs->tsThreadDone = RTTimeNanoTS();
1992
1993	if (cbReceived == pArgs->cbSent && RT_SUCCESS(rc))
1994	{
1995	size_t cbActual = 0;
1996	rc = RTSocketReadNB(pArgs->hSocket, pArgs->pbBuf, 1, &cbActual);
1997	if (rc != VINF_SUCCESS && rc != VINF_TRY_AGAIN)
1998	RTTestFailed(g_hTest, "RTSocketReadNB(sendfile client socket) -> %Rrc; expected VINF_SUCCESS or VINF_TRY_AGAIN\n", rc);
1999	else if (cbActual != 0)
2000	RTTestFailed(g_hTest, "sendfile client socket still contains data when done!\n");
2001	}
2002
2003	RTTEST_CHECK_RC(g_hTest, RTSocketClose(pArgs->hSocket), VINF_SUCCESS);
2004	pArgs->hSocket = NIL_RTSOCKET;
2005
2006	RT_NOREF(hSelf);
2007	return rc;
2008	}
2009
2010
2011	static uint64_t fsPerfSendFileOne(FSPERFSENDFILEARGS *pArgs, RTFILE hFile1, uint64_t offFile,
2012	size_t cbSend, uint64_t cbSent, uint8_t bFiller, bool fCheckBuf, unsigned iLine)
2013	{
2014	/* Copy parameters to the argument structure: */
2015	pArgs->offFile = offFile;
2016	pArgs->cbSend = cbSend;
2017	pArgs->cbSent = cbSent;
2018	pArgs->bFiller = bFiller;
2019	pArgs->fCheckBuf = fCheckBuf;
2020
2021	/* Create a socket pair. */
2022	pArgs->hSocket = NIL_RTSOCKET;
2023	RTSOCKET hServer = NIL_RTSOCKET;
2024	RTTESTI_CHECK_RC_RET(RTTcpCreatePair(&hServer, &pArgs->hSocket, 0), VINF_SUCCESS, 0);
2025
2026	/* Create the receiving thread: */
2027	int rc;
2028	RTTHREAD hThread = NIL_RTTHREAD;
2029	RTTESTI_CHECK_RC(rc = RTThreadCreate(&hThread, fsPerfSendFileThread, pArgs, 0,
2030	RTTHREADTYPE_DEFAULT, RTTHREADFLAGS_WAITABLE, "sendfile"), VINF_SUCCESS);
2031	if (RT_SUCCESS(rc))
2032	{
2033	uint64_t const tsStart = RTTimeNanoTS();
2034
2035	# if defined(RT_OS_LINUX) \|\| defined(RT_OS_SOLARIS)
2036	/* SystemV sendfile: */
2037	loff_t offFileSf = pArgs->offFile;
2038	ssize_t cbActual = sendfile((int)RTSocketToNative(hServer), (int)RTFileToNative(hFile1), &offFileSf, pArgs->cbSend);
2039	int const iErr = errno;
2040	if (cbActual < 0)
2041	RTTestIFailed("%u: sendfile(socket, file, &%#X64, %#zx) failed (%zd): %d (%Rrc), offFileSf=%#RX64\n",
2042	iLine, pArgs->offFile, pArgs->cbSend, cbActual, iErr, RTErrConvertFromErrno(iErr), (uint64_t)offFileSf);
2043	else if ((uint64_t)cbActual != pArgs->cbSent)
2044	RTTestIFailed("%u: sendfile(socket, file, &%#RX64, %#zx): %#zx, expected %#RX64 (offFileSf=%#RX64)\n",
2045	iLine, pArgs->offFile, pArgs->cbSend, cbActual, pArgs->cbSent, (uint64_t)offFileSf);
2046	else if ((uint64_t)offFileSf != pArgs->offFile + pArgs->cbSent)
2047	RTTestIFailed("%u: sendfile(socket, file, &%#RX64, %#zx): %#zx; offFileSf=%#RX64, expected %#RX64\n",
2048	iLine, pArgs->offFile, pArgs->cbSend, cbActual, (uint64_t)offFileSf, pArgs->offFile + pArgs->cbSent);
2049	#else
2050	/* BSD sendfile: */
2051	# ifdef SF_SYNC
2052	int fSfFlags = SF_SYNC;
2053	# else
2054	int fSfFlags = 0;
2055	# endif
2056	off_t cbActual = pArgs->cbSend;
2057	rc = sendfile((int)RTFileToNative(hFile1), (int)RTSocketToNative(hServer),
2058	# ifdef RT_OS_DARWIN
2059	pArgs->offFile, &cbActual, NULL, fSfFlags);
2060	# else
2061	pArgs->offFile, cbActual, NULL, &cbActual, fSfFlags);
2062	# endif
2063	int const iErr = errno;
2064	if (rc != 0)
2065	RTTestIFailed("%u: sendfile(file, socket, %#RX64, %#zx, NULL,, %#x) failed (%d): %d (%Rrc), cbActual=%#RX64\n",
2066	iLine, pArgs->offFile, (size_t)pArgs->cbSend, rc, iErr, RTErrConvertFromErrno(iErr), (uint64_t)cbActual);
2067	if ((uint64_t)cbActual != pArgs->cbSent)
2068	RTTestIFailed("%u: sendfile(file, socket, %#RX64, %#zx, NULL,, %#x): cbActual=%#RX64, expected %#RX64 (rc=%d, errno=%d)\n",
2069	iLine, pArgs->offFile, (size_t)pArgs->cbSend, (uint64_t)cbActual, pArgs->cbSent, rc, iErr);
2070	# endif
2071	RTTESTI_CHECK_RC(RTSocketClose(hServer), VINF_SUCCESS);
2072	RTTESTI_CHECK_RC(RTThreadWait(hThread, 30 * RT_NS_1SEC, NULL), VINF_SUCCESS);
2073
2074	if (pArgs->tsThreadDone >= tsStart)
2075	return RT_MAX(pArgs->tsThreadDone - tsStart, 1);
2076	}
2077	return 0;
2078	}
2079
2080
2081	static void fsPerfSendFile(RTFILE hFile1, uint64_t cbFile)
2082	{
2083	RTTestISub("sendfile");
2084	# ifdef RT_OS_LINUX
2085	uint64_t const cbFileMax = RT_MIN(cbFile, UINT32_MAX - PAGE_OFFSET_MASK);
2086	# else
2087	uint64_t const cbFileMax = RT_MIN(cbFile, SSIZE_MAX - PAGE_OFFSET_MASK);
2088	# endif
2089	signal(SIGPIPE, SIG_IGN);
2090
2091	/*
2092	* Allocate a buffer.
2093	*/
2094	FSPERFSENDFILEARGS Args;
2095	Args.cbBuf = RT_MIN(cbFileMax, _16M);
2096	Args.pbBuf = (uint8_t *)RTMemAlloc(Args.cbBuf);
2097	while (!Args.pbBuf)
2098	{
2099	Args.cbBuf /= 8;
2100	RTTESTI_CHECK_RETV(Args.cbBuf >= _64K);
2101	Args.pbBuf = (uint8_t *)RTMemAlloc(Args.cbBuf);
2102	}
2103
2104	/*
2105	* First iteration with default buffer content.
2106	*/
2107	fsPerfSendFileOne(&Args, hFile1, 0, cbFileMax, cbFileMax, 0xf6, true /fCheckBuf/, __LINE__);
2108	if (cbFileMax == cbFile)
2109	fsPerfSendFileOne(&Args, hFile1, 63, cbFileMax, cbFileMax - 63, 0xf6, true /fCheckBuf/, __LINE__);
2110	else
2111	fsPerfSendFileOne(&Args, hFile1, 63, cbFileMax - 63, cbFileMax - 63, 0xf6, true /fCheckBuf/, __LINE__);
2112
2113	/*
2114	* Write a block using the regular API and then send it, checking that
2115	* the any caching that sendfile does is correctly updated.
2116	*/
2117	uint8_t bFiller = 0xf6;
2118	size_t cbToSend = RT_MIN(cbFileMax, Args.cbBuf);
2119	do
2120	{
2121	fsPerfSendFileOne(&Args, hFile1, 0, cbToSend, cbToSend, bFiller, true /fCheckBuf/, __LINE__); /* prime cache */
2122
2123	bFiller += 1;
2124	fsPerfFillWriteBuf(0, Args.pbBuf, cbToSend, bFiller);
2125	RTTESTI_CHECK_RC(RTFileWriteAt(hFile1, 0, Args.pbBuf, cbToSend, NULL), VINF_SUCCESS);
2126
2127	fsPerfSendFileOne(&Args, hFile1, 0, cbToSend, cbToSend, bFiller, true /fCheckBuf/, __LINE__);
2128
2129	cbToSend /= 2;
2130	} while (cbToSend >= PAGE_SIZE && ((unsigned)bFiller - 0xf7U) < 64);
2131
2132	/*
2133	* Restore buffer content
2134	*/
2135	bFiller = 0xf6;
2136	fsPerfFillWriteBuf(0, Args.pbBuf, Args.cbBuf, bFiller);
2137	RTTESTI_CHECK_RC(RTFileWriteAt(hFile1, 0, Args.pbBuf, Args.cbBuf, NULL), VINF_SUCCESS);
2138
2139	/*
2140	* Do 128 random sends.
2141	*/
2142	uint64_t const cbSmall = RT_MIN(_256K, cbFileMax / 16);
2143	for (uint32_t iTest = 0; iTest < 128; iTest++)
2144	{
2145	cbToSend = (size_t)RTRandU64Ex(1, iTest < 64 ? cbSmall : cbFileMax);
2146	uint64_t const offToSendFrom = RTRandU64Ex(0, cbFile - 1);
2147	uint64_t const cbSent = offToSendFrom + cbToSend <= cbFile ? cbToSend : cbFile - offToSendFrom;
2148
2149	fsPerfSendFileOne(&Args, hFile1, offToSendFrom, cbToSend, cbSent, bFiller, true /fCheckBuf/, __LINE__);
2150	}
2151
2152	/*
2153	* Benchmark it.
2154	*/
2155	uint32_t cIterations = 0;
2156	uint64_t nsElapsed = 0;
2157	for (;;)
2158	{
2159	uint64_t cNsThis = fsPerfSendFileOne(&Args, hFile1, 0, cbFileMax, cbFileMax, 0xf6, false /fCheckBuf/, __LINE__);
2160	nsElapsed += cNsThis;
2161	cIterations++;
2162	if (!cNsThis \|\| nsElapsed >= g_nsTestRun)
2163	break;
2164	}
2165	uint64_t cbTotal = cbFileMax * cIterations;
2166	RTTestIValue("latency", nsElapsed / cIterations, RTTESTUNIT_NS_PER_CALL);
2167	RTTestIValue("throughput", (uint64_t)(cbTotal / ((double)nsElapsed / RT_NS_1SEC)), RTTESTUNIT_BYTES_PER_SEC);
2168	RTTestIValue("calls", cIterations, RTTESTUNIT_CALLS);
2169	RTTestIValue("bytes", cbTotal, RTTESTUNIT_BYTES);
2170	if (g_fShowDuration)
2171	RTTestIValue("duration", nsElapsed, RTTESTUNIT_NS);
2172
2173	/*
2174	* Cleanup.
2175	*/
2176	RTMemFree(Args.pbBuf);
2177	}
2178
2179	#endif /* FSPERF_TEST_SENDFILE */
2180	#ifdef RT_OS_LINUX
2181
2182	#ifndef __NR_splice
2183	# if defined(RT_ARCH_AMD64)
2184	# define __NR_splice 275
2185	# elif defined(RT_ARCH_X86)
2186	# define __NR_splice 313
2187	# else
2188	# error "fix me"
2189	# endif
2190	#endif
2191
2192	/** FsPerf is built against ancient glibc, so make the splice syscall ourselves. */
2193	DECLINLINE(ssize_t) syscall_splice(int fdIn, loff_t poffIn, int fdOut, loff_t poffOut, size_t cbChunk, unsigned fFlags)
2194	{
2195	return syscall(__NR_splice, fdIn, poffIn, fdOut, poffOut, cbChunk, fFlags);
2196	}
2197
2198
2199	/**
2200	* Send file thread arguments.
2201	*/
2202	typedef struct FSPERFSPLICEARGS
2203	{
2204	uint64_t offFile;
2205	size_t cbSend;
2206	uint64_t cbSent;
2207	size_t cbBuf;
2208	uint8_t *pbBuf;
2209	uint8_t bFiller;
2210	bool fCheckBuf;
2211	uint32_t cCalls;
2212	RTPIPE hPipe;
2213	uint64_t volatile tsThreadDone;
2214	} FSPERFSPLICEARGS;
2215
2216
2217	/** Thread receiving the bytes from a splice() call. */
2218	static DECLCALLBACK(int) fsPerfSpliceToPipeThread(RTTHREAD hSelf, void *pvUser)
2219	{
2220	FSPERFSPLICEARGS pArgs = (FSPERFSPLICEARGS )pvUser;
2221	int rc = VINF_SUCCESS;
2222
2223	if (pArgs->fCheckBuf)
2224	RTTestSetDefault(g_hTest, NULL);
2225
2226	uint64_t cbReceived = 0;
2227	while (cbReceived < pArgs->cbSent)
2228	{
2229	size_t const cbToRead = RT_MIN(pArgs->cbBuf, pArgs->cbSent - cbReceived);
2230	size_t cbActual = 0;
2231	RTTEST_CHECK_RC_BREAK(g_hTest, rc = RTPipeReadBlocking(pArgs->hPipe, pArgs->pbBuf, cbToRead, &cbActual), VINF_SUCCESS);
2232	RTTEST_CHECK_BREAK(g_hTest, cbActual != 0);
2233	RTTEST_CHECK(g_hTest, cbActual <= cbToRead);
2234	if (pArgs->fCheckBuf)
2235	fsPerfCheckReadBuf(__LINE__, pArgs->offFile + cbReceived, pArgs->pbBuf, cbActual, pArgs->bFiller);
2236	cbReceived += cbActual;
2237	}
2238
2239	pArgs->tsThreadDone = RTTimeNanoTS();
2240
2241	if (cbReceived == pArgs->cbSent && RT_SUCCESS(rc))
2242	{
2243	size_t cbActual = 0;
2244	rc = RTPipeRead(pArgs->hPipe, pArgs->pbBuf, 1, &cbActual);
2245	if (rc != VINF_SUCCESS && rc != VINF_TRY_AGAIN && rc != VERR_BROKEN_PIPE)
2246	RTTestFailed(g_hTest, "RTPipeReadBlocking() -> %Rrc; expected VINF_SUCCESS or VINF_TRY_AGAIN\n", rc);
2247	else if (cbActual != 0)
2248	RTTestFailed(g_hTest, "splice read pipe still contains data when done!\n");
2249	}
2250
2251	RTTEST_CHECK_RC(g_hTest, RTPipeClose(pArgs->hPipe), VINF_SUCCESS);
2252	pArgs->hPipe = NIL_RTPIPE;
2253
2254	RT_NOREF(hSelf);
2255	return rc;
2256	}
2257
2258
2259	/** Sends hFile1 to a pipe via the Linux-specific splice() syscall. */
2260	static uint64_t fsPerfSpliceToPipeOne(FSPERFSPLICEARGS *pArgs, RTFILE hFile1, uint64_t offFile,
2261	size_t cbSend, uint64_t cbSent, uint8_t bFiller, bool fCheckBuf, unsigned iLine)
2262	{
2263	/* Copy parameters to the argument structure: */
2264	pArgs->offFile = offFile;
2265	pArgs->cbSend = cbSend;
2266	pArgs->cbSent = cbSent;
2267	pArgs->bFiller = bFiller;
2268	pArgs->fCheckBuf = fCheckBuf;
2269
2270	/* Create a socket pair. */
2271	pArgs->hPipe = NIL_RTPIPE;
2272	RTPIPE hPipeW = NIL_RTPIPE;
2273	RTTESTI_CHECK_RC_RET(RTPipeCreate(&pArgs->hPipe, &hPipeW, 0 /fFlags/), VINF_SUCCESS, 0);
2274
2275	/* Create the receiving thread: */
2276	int rc;
2277	RTTHREAD hThread = NIL_RTTHREAD;
2278	RTTESTI_CHECK_RC(rc = RTThreadCreate(&hThread, fsPerfSpliceToPipeThread, pArgs, 0,
2279	RTTHREADTYPE_DEFAULT, RTTHREADFLAGS_WAITABLE, "splicerecv"), VINF_SUCCESS);
2280	if (RT_SUCCESS(rc))
2281	{
2282	uint64_t const tsStart = RTTimeNanoTS();
2283	size_t cbLeft = cbSend;
2284	size_t cbTotal = 0;
2285	do
2286	{
2287	loff_t offFileIn = offFile;
2288	ssize_t cbActual = syscall_splice((int)RTFileToNative(hFile1), &offFileIn, (int)RTPipeToNative(hPipeW), NULL,
2289	cbLeft, 0 /fFlags/);
2290	int const iErr = errno;
2291	if (RT_UNLIKELY(cbActual < 0))
2292	{
2293	if (iErr == EPIPE && cbTotal == pArgs->cbSent)
2294	break;
2295	RTTestIFailed("%u: splice(file, &%#RX64, pipe, NULL, %#zx, 0) failed (%zd): %d (%Rrc), offFileIn=%#RX64\n",
2296	iLine, offFile, cbLeft, cbActual, iErr, RTErrConvertFromErrno(iErr), (uint64_t)offFileIn);
2297	break;
2298	}
2299	RTTESTI_CHECK_BREAK((uint64_t)cbActual <= cbLeft);
2300	if ((uint64_t)offFileIn != offFile + (uint64_t)cbActual)
2301	{
2302	RTTestIFailed("%u: splice(file, &%#RX64, pipe, NULL, %#zx, 0): %#zx; offFileIn=%#RX64, expected %#RX64\n",
2303	iLine, offFile, cbLeft, cbActual, (uint64_t)offFileIn, offFile + (uint64_t)cbActual);
2304	break;
2305	}
2306	if (cbActual > 0)
2307	{
2308	pArgs->cCalls++;
2309	offFile += (size_t)cbActual;
2310	cbTotal += (size_t)cbActual;
2311	cbLeft -= (size_t)cbActual;
2312	}
2313	else
2314	break;
2315	} while (cbLeft > 0);
2316
2317	if (cbTotal != pArgs->cbSent)
2318	RTTestIFailed("%u: spliced a total of %#zx bytes, expected %#zx!\n", iLine, cbTotal, pArgs->cbSent);
2319
2320	RTTESTI_CHECK_RC(RTPipeClose(hPipeW), VINF_SUCCESS);
2321	RTTESTI_CHECK_RC(RTThreadWait(hThread, 30 * RT_NS_1SEC, NULL), VINF_SUCCESS);
2322
2323	if (pArgs->tsThreadDone >= tsStart)
2324	return RT_MAX(pArgs->tsThreadDone - tsStart, 1);
2325	}
2326	return 0;
2327	}
2328
2329
2330	static void fsPerfSpliceToPipe(RTFILE hFile1, uint64_t cbFile)
2331	{
2332	RTTestISub("splice/to-pipe");
2333
2334	/*
2335	* splice was introduced in 2.6.17 according to the man-page.
2336	*/
2337	char szRelease[64];
2338	RTSystemQueryOSInfo(RTSYSOSINFO_RELEASE, szRelease, sizeof(szRelease));
2339	if (RTStrVersionCompare(szRelease, "2.6.17") < 0)
2340	{
2341	RTTestPassed(g_hTest, "too old kernel (%s)", szRelease);
2342	return;
2343	}
2344
2345	uint64_t const cbFileMax = RT_MIN(cbFile, UINT32_MAX - PAGE_OFFSET_MASK);
2346	signal(SIGPIPE, SIG_IGN);
2347
2348	/*
2349	* Allocate a buffer.
2350	*/
2351	FSPERFSPLICEARGS Args;
2352	Args.cbBuf = RT_MIN(cbFileMax, _16M);
2353	Args.pbBuf = (uint8_t *)RTMemAlloc(Args.cbBuf);
2354	while (!Args.pbBuf)
2355	{
2356	Args.cbBuf /= 8;
2357	RTTESTI_CHECK_RETV(Args.cbBuf >= _64K);
2358	Args.pbBuf = (uint8_t *)RTMemAlloc(Args.cbBuf);
2359	}
2360
2361	/*
2362	* First iteration with default buffer content.
2363	*/
2364	fsPerfSpliceToPipeOne(&Args, hFile1, 0, cbFileMax, cbFileMax, 0xf6, true /fCheckBuf/, __LINE__);
2365	if (cbFileMax == cbFile)
2366	fsPerfSpliceToPipeOne(&Args, hFile1, 63, cbFileMax, cbFileMax - 63, 0xf6, true /fCheckBuf/, __LINE__);
2367	else
2368	fsPerfSpliceToPipeOne(&Args, hFile1, 63, cbFileMax - 63, cbFileMax - 63, 0xf6, true /fCheckBuf/, __LINE__);
2369
2370	/*
2371	* Write a block using the regular API and then send it, checking that
2372	* the any caching that sendfile does is correctly updated.
2373	*/
2374	uint8_t bFiller = 0xf6;
2375	size_t cbToSend = RT_MIN(cbFileMax, Args.cbBuf);
2376	do
2377	{
2378	fsPerfSpliceToPipeOne(&Args, hFile1, 0, cbToSend, cbToSend, bFiller, true /fCheckBuf/, __LINE__); /* prime cache */
2379
2380	bFiller += 1;
2381	fsPerfFillWriteBuf(0, Args.pbBuf, cbToSend, bFiller);
2382	RTTESTI_CHECK_RC(RTFileWriteAt(hFile1, 0, Args.pbBuf, cbToSend, NULL), VINF_SUCCESS);
2383
2384	fsPerfSpliceToPipeOne(&Args, hFile1, 0, cbToSend, cbToSend, bFiller, true /fCheckBuf/, __LINE__);
2385
2386	cbToSend /= 2;
2387	} while (cbToSend >= PAGE_SIZE && ((unsigned)bFiller - 0xf7U) < 64);
2388
2389	/*
2390	* Restore buffer content
2391	*/
2392	bFiller = 0xf6;
2393	fsPerfFillWriteBuf(0, Args.pbBuf, Args.cbBuf, bFiller);
2394	RTTESTI_CHECK_RC(RTFileWriteAt(hFile1, 0, Args.pbBuf, Args.cbBuf, NULL), VINF_SUCCESS);
2395
2396	/*
2397	* Do 128 random sends.
2398	*/
2399	uint64_t const cbSmall = RT_MIN(_256K, cbFileMax / 16);
2400	for (uint32_t iTest = 0; iTest < 128; iTest++)
2401	{
2402	cbToSend = (size_t)RTRandU64Ex(1, iTest < 64 ? cbSmall : cbFileMax);
2403	uint64_t const offToSendFrom = RTRandU64Ex(0, cbFile - 1);
2404	uint64_t const cbSent = offToSendFrom + cbToSend <= cbFile ? cbToSend : cbFile - offToSendFrom;
2405
2406	fsPerfSpliceToPipeOne(&Args, hFile1, offToSendFrom, cbToSend, cbSent, bFiller, true /fCheckBuf/, __LINE__);
2407	}
2408
2409	/*
2410	* Benchmark it.
2411	*/
2412	Args.cCalls = 0;
2413	uint32_t cIterations = 0;
2414	uint64_t nsElapsed = 0;
2415	for (;;)
2416	{
2417	uint64_t cNsThis = fsPerfSpliceToPipeOne(&Args, hFile1, 0, cbFileMax, cbFileMax, 0xf6, false /fCheckBuf/, __LINE__);
2418	nsElapsed += cNsThis;
2419	cIterations++;
2420	if (!cNsThis \|\| nsElapsed >= g_nsTestRun)
2421	break;
2422	}
2423	uint64_t cbTotal = cbFileMax * cIterations;
2424	RTTestIValue("latency", nsElapsed / Args.cCalls, RTTESTUNIT_NS_PER_CALL);
2425	RTTestIValue("throughput", (uint64_t)(cbTotal / ((double)nsElapsed / RT_NS_1SEC)), RTTESTUNIT_BYTES_PER_SEC);
2426	RTTestIValue("calls", Args.cCalls, RTTESTUNIT_CALLS);
2427	RTTestIValue("bytes/call", cbTotal / Args.cCalls, RTTESTUNIT_BYTES);
2428	RTTestIValue("iterations", cIterations, RTTESTUNIT_NONE);
2429	RTTestIValue("bytes", cbTotal, RTTESTUNIT_BYTES);
2430	if (g_fShowDuration)
2431	RTTestIValue("duration", nsElapsed, RTTESTUNIT_NS);
2432
2433	/*
2434	* Cleanup.
2435	*/
2436	RTMemFree(Args.pbBuf);
2437	}
2438
2439
2440	/** Thread sending the bytes to a splice() call. */
2441	static DECLCALLBACK(int) fsPerfSpliceToFileThread(RTTHREAD hSelf, void *pvUser)
2442	{
2443	FSPERFSPLICEARGS pArgs = (FSPERFSPLICEARGS )pvUser;
2444	int rc = VINF_SUCCESS;
2445
2446	uint64_t offFile = pArgs->offFile;
2447	uint64_t cbTotalSent = 0;
2448	while (cbTotalSent < pArgs->cbSent)
2449	{
2450	size_t const cbToSend = RT_MIN(pArgs->cbBuf, pArgs->cbSent - cbTotalSent);
2451	fsPerfFillWriteBuf(offFile, pArgs->pbBuf, cbToSend, pArgs->bFiller);
2452	RTTEST_CHECK_RC_BREAK(g_hTest, rc = RTPipeWriteBlocking(pArgs->hPipe, pArgs->pbBuf, cbToSend, NULL), VINF_SUCCESS);
2453	offFile += cbToSend;
2454	cbTotalSent += cbToSend;
2455	}
2456
2457	pArgs->tsThreadDone = RTTimeNanoTS();
2458
2459	RTTEST_CHECK_RC(g_hTest, RTPipeClose(pArgs->hPipe), VINF_SUCCESS);
2460	pArgs->hPipe = NIL_RTPIPE;
2461
2462	RT_NOREF(hSelf);
2463	return rc;
2464	}
2465
2466
2467	/** Fill hFile1 via a pipe and the Linux-specific splice() syscall. */
2468	static uint64_t fsPerfSpliceToFileOne(FSPERFSPLICEARGS *pArgs, RTFILE hFile1, uint64_t offFile,
2469	size_t cbSend, uint64_t cbSent, uint8_t bFiller, bool fCheckFile, unsigned iLine)
2470	{
2471	/* Copy parameters to the argument structure: */
2472	pArgs->offFile = offFile;
2473	pArgs->cbSend = cbSend;
2474	pArgs->cbSent = cbSent;
2475	pArgs->bFiller = bFiller;
2476	pArgs->fCheckBuf = false;
2477
2478	/* Create a socket pair. */
2479	pArgs->hPipe = NIL_RTPIPE;
2480	RTPIPE hPipeR = NIL_RTPIPE;
2481	RTTESTI_CHECK_RC_RET(RTPipeCreate(&hPipeR, &pArgs->hPipe, 0 /fFlags/), VINF_SUCCESS, 0);
2482
2483	/* Create the receiving thread: */
2484	int rc;
2485	RTTHREAD hThread = NIL_RTTHREAD;
2486	RTTESTI_CHECK_RC(rc = RTThreadCreate(&hThread, fsPerfSpliceToFileThread, pArgs, 0,
2487	RTTHREADTYPE_DEFAULT, RTTHREADFLAGS_WAITABLE, "splicerecv"), VINF_SUCCESS);
2488	if (RT_SUCCESS(rc))
2489	{
2490	/*
2491	* Do the splicing.
2492	*/
2493	uint64_t const tsStart = RTTimeNanoTS();
2494	size_t cbLeft = cbSend;
2495	size_t cbTotal = 0;
2496	do
2497	{
2498	loff_t offFileOut = offFile;
2499	ssize_t cbActual = syscall_splice((int)RTPipeToNative(hPipeR), NULL, (int)RTFileToNative(hFile1), &offFileOut,
2500	cbLeft, 0 /fFlags/);
2501	int const iErr = errno;
2502	if (RT_UNLIKELY(cbActual < 0))
2503	{
2504	RTTestIFailed("%u: splice(pipe, NULL, file, &%#RX64, %#zx, 0) failed (%zd): %d (%Rrc), offFileOut=%#RX64\n",
2505	iLine, offFile, cbLeft, cbActual, iErr, RTErrConvertFromErrno(iErr), (uint64_t)offFileOut);
2506	break;
2507	}
2508	RTTESTI_CHECK_BREAK((uint64_t)cbActual <= cbLeft);
2509	if ((uint64_t)offFileOut != offFile + (uint64_t)cbActual)
2510	{
2511	RTTestIFailed("%u: splice(pipe, NULL, file, &%#RX64, %#zx, 0): %#zx; offFileOut=%#RX64, expected %#RX64\n",
2512	iLine, offFile, cbLeft, cbActual, (uint64_t)offFileOut, offFile + (uint64_t)cbActual);
2513	break;
2514	}
2515	if (cbActual > 0)
2516	{
2517	pArgs->cCalls++;
2518	offFile += (size_t)cbActual;
2519	cbTotal += (size_t)cbActual;
2520	cbLeft -= (size_t)cbActual;
2521	}
2522	else
2523	break;
2524	} while (cbLeft > 0);
2525	uint64_t const nsElapsed = RTTimeNanoTS() - tsStart;
2526
2527	if (cbTotal != pArgs->cbSent)
2528	RTTestIFailed("%u: spliced a total of %#zx bytes, expected %#zx!\n", iLine, cbTotal, pArgs->cbSent);
2529
2530	RTTESTI_CHECK_RC(RTPipeClose(hPipeR), VINF_SUCCESS);
2531	RTTESTI_CHECK_RC(RTThreadWait(hThread, 30 * RT_NS_1SEC, NULL), VINF_SUCCESS);
2532
2533	/* Check the file content. */
2534	if (fCheckFile && cbTotal == pArgs->cbSent)
2535	{
2536	offFile = pArgs->offFile;
2537	cbLeft = cbSent;
2538	while (cbLeft > 0)
2539	{
2540	size_t cbToRead = RT_MIN(cbLeft, pArgs->cbBuf);
2541	RTTESTI_CHECK_RC_BREAK(RTFileReadAt(hFile1, offFile, pArgs->pbBuf, cbToRead, NULL), VINF_SUCCESS);
2542	if (!fsPerfCheckReadBuf(iLine, offFile, pArgs->pbBuf, cbToRead, pArgs->bFiller))
2543	break;
2544	offFile += cbToRead;
2545	cbLeft -= cbToRead;
2546	}
2547	}
2548	return nsElapsed;
2549	}
2550	return 0;
2551	}
2552
2553
2554	static void fsPerfSpliceToFile(RTFILE hFile1, uint64_t cbFile)
2555	{
2556	RTTestISub("splice/to-file");
2557
2558	/*
2559	* splice was introduced in 2.6.17 according to the man-page.
2560	*/
2561	char szRelease[64];
2562	RTSystemQueryOSInfo(RTSYSOSINFO_RELEASE, szRelease, sizeof(szRelease));
2563	if (RTStrVersionCompare(szRelease, "2.6.17") < 0)
2564	{
2565	RTTestPassed(g_hTest, "too old kernel (%s)", szRelease);
2566	return;
2567	}
2568
2569	uint64_t const cbFileMax = RT_MIN(cbFile, UINT32_MAX - PAGE_OFFSET_MASK);
2570	signal(SIGPIPE, SIG_IGN);
2571
2572	/*
2573	* Allocate a buffer.
2574	*/
2575	FSPERFSPLICEARGS Args;
2576	Args.cbBuf = RT_MIN(cbFileMax, _16M);
2577	Args.pbBuf = (uint8_t *)RTMemAlloc(Args.cbBuf);
2578	while (!Args.pbBuf)
2579	{
2580	Args.cbBuf /= 8;
2581	RTTESTI_CHECK_RETV(Args.cbBuf >= _64K);
2582	Args.pbBuf = (uint8_t *)RTMemAlloc(Args.cbBuf);
2583	}
2584
2585	/*
2586	* Do the whole file.
2587	*/
2588	uint8_t bFiller = 0x76;
2589	fsPerfSpliceToFileOne(&Args, hFile1, 0, cbFileMax, cbFileMax, bFiller, true /fCheckFile/, __LINE__);
2590
2591	/*
2592	* Do 64 random chunks (this is slower).
2593	*/
2594	uint64_t const cbSmall = RT_MIN(_256K, cbFileMax / 16);
2595	for (uint32_t iTest = 0; iTest < 64; iTest++)
2596	{
2597	size_t const cbToWrite = (size_t)RTRandU64Ex(1, iTest < 24 ? cbSmall : cbFileMax);
2598	uint64_t const offToWriteAt = RTRandU64Ex(0, cbFile - cbToWrite);
2599	uint64_t const cbTryRead = cbToWrite + (iTest & 1 ? RTRandU32Ex(0, _64K) : 0);
2600
2601	bFiller++;
2602	fsPerfSpliceToFileOne(&Args, hFile1, offToWriteAt, cbTryRead, cbToWrite, bFiller, true /fCheckFile/, __LINE__);
2603	}
2604
2605	/*
2606	* Benchmark it.
2607	*/
2608	Args.cCalls = 0;
2609	uint32_t cIterations = 0;
2610	uint64_t nsElapsed = 0;
2611	for (;;)
2612	{
2613	uint64_t cNsThis = fsPerfSpliceToFileOne(&Args, hFile1, 0, cbFileMax, cbFileMax, 0xf6, false /fCheckBuf/, __LINE__);
2614	nsElapsed += cNsThis;
2615	cIterations++;
2616	if (!cNsThis \|\| nsElapsed >= g_nsTestRun)
2617	break;
2618	}
2619	uint64_t cbTotal = cbFileMax * cIterations;
2620	RTTestIValue("latency", nsElapsed / Args.cCalls, RTTESTUNIT_NS_PER_CALL);
2621	RTTestIValue("throughput", (uint64_t)(cbTotal / ((double)nsElapsed / RT_NS_1SEC)), RTTESTUNIT_BYTES_PER_SEC);
2622	RTTestIValue("calls", Args.cCalls, RTTESTUNIT_CALLS);
2623	RTTestIValue("bytes/call", cbTotal / Args.cCalls, RTTESTUNIT_BYTES);
2624	RTTestIValue("iterations", cIterations, RTTESTUNIT_NONE);
2625	RTTestIValue("bytes", cbTotal, RTTESTUNIT_BYTES);
2626	if (g_fShowDuration)
2627	RTTestIValue("duration", nsElapsed, RTTESTUNIT_NS);
2628
2629	/*
2630	* Cleanup.
2631	*/
2632	RTMemFree(Args.pbBuf);
2633	}
2634
2635	#endif /* RT_OS_LINUX */
2636
2637	/** For fsPerfIoRead and fsPerfIoWrite. */
2638	#define PROFILE_IO_FN(a_szOperation, a_fnCall) \
2639	do \
2640	{ \
2641	RTTESTI_CHECK_RC_RETV(RTFileSeek(hFile1, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS); \
2642	uint64_t offActual = 0; \
2643	uint32_t cSeeks = 0; \
2644	\
2645	/* Estimate how many iterations we need to fill up the given timeslot: */ \
2646	fsPerfYield(); \
2647	uint64_t nsStart = RTTimeNanoTS(); \
2648	uint64_t ns; \
2649	do \
2650	ns = RTTimeNanoTS(); \
2651	while (ns == nsStart); \
2652	nsStart = ns; \
2653	\
2654	uint64_t iIteration = 0; \
2655	do \
2656	{ \
2657	RTTESTI_CHECK_RC(a_fnCall, VINF_SUCCESS); \
2658	iIteration++; \
2659	ns = RTTimeNanoTS() - nsStart; \
2660	} while (ns < RT_NS_10MS); \
2661	ns /= iIteration; \
2662	if (ns > g_nsPerNanoTSCall + 32) \
2663	ns -= g_nsPerNanoTSCall; \
2664	uint64_t cIterations = g_nsTestRun / ns; \
2665	if (cIterations < 2) \
2666	cIterations = 2; \
2667	else if (cIterations & 1) \
2668	cIterations++; \
2669	\
2670	/* Do the actual profiling: */ \
2671	cSeeks = 0; \
2672	iIteration = 0; \
2673	fsPerfYield(); \
2674	nsStart = RTTimeNanoTS(); \
2675	for (uint32_t iAdjust = 0; iAdjust < 4; iAdjust++) \
2676	{ \
2677	for (; iIteration < cIterations; iIteration++)\
2678	RTTESTI_CHECK_RC(a_fnCall, VINF_SUCCESS); \
2679	ns = RTTimeNanoTS() - nsStart;\
2680	if (ns >= g_nsTestRun - (g_nsTestRun / 10)) \
2681	break; \
2682	cIterations += cIterations / 4; \
2683	if (cIterations & 1) \
2684	cIterations++; \
2685	nsStart += g_nsPerNanoTSCall; \
2686	} \
2687	RTTestIValueF(ns / iIteration, \
2688	RTTESTUNIT_NS_PER_OCCURRENCE, a_szOperation "/seq/%RU32 latency", cbBlock); \
2689	RTTestIValueF((uint64_t)((uint64_t)iIteration * cbBlock / ((double)ns / RT_NS_1SEC)), \
2690	RTTESTUNIT_BYTES_PER_SEC, a_szOperation "/seq/%RU32 throughput", cbBlock); \
2691	RTTestIValueF(iIteration, \
2692	RTTESTUNIT_CALLS, a_szOperation "/seq/%RU32 calls", cbBlock); \
2693	RTTestIValueF((uint64_t)iIteration * cbBlock, \
2694	RTTESTUNIT_BYTES, a_szOperation "/seq/%RU32 bytes", cbBlock); \
2695	RTTestIValueF(cSeeks, \
2696	RTTESTUNIT_OCCURRENCES, a_szOperation "/seq/%RU32 seeks", cbBlock); \
2697	if (g_fShowDuration) \
2698	RTTestIValueF(ns, RTTESTUNIT_NS, a_szOperation "/seq/%RU32 duration", cbBlock); \
2699	} while (0)
2700
2701
2702	/**
2703	* One RTFileRead profiling iteration.
2704	*/
2705	DECL_FORCE_INLINE(int) fsPerfIoReadWorker(RTFILE hFile1, uint64_t cbFile, uint32_t cbBlock, uint8_t *pbBlock,
2706	uint64_t poffActual, uint32_t pcSeeks)
2707	{
2708	/* Do we need to seek back to the start? */
2709	if (*poffActual + cbBlock <= cbFile)
2710	{ /* likely */ }
2711	else
2712	{
2713	RTTESTI_CHECK_RC_RET(RTFileSeek(hFile1, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS, rcCheck);
2714	*pcSeeks += 1;
2715	*poffActual = 0;
2716	}
2717
2718	size_t cbActuallyRead = 0;
2719	RTTESTI_CHECK_RC_RET(RTFileRead(hFile1, pbBlock, cbBlock, &cbActuallyRead), VINF_SUCCESS, rcCheck);
2720	if (cbActuallyRead == cbBlock)
2721	{
2722	*poffActual += cbActuallyRead;
2723	return VINF_SUCCESS;
2724	}
2725	RTTestIFailed("RTFileRead at %#RX64 returned just %#x bytes, expected %#x", *poffActual, cbActuallyRead, cbBlock);
2726	*poffActual += cbActuallyRead;
2727	return VERR_READ_ERROR;
2728	}
2729
2730
2731	void fsPerfIoReadBlockSize(RTFILE hFile1, uint64_t cbFile, uint32_t cbBlock)
2732	{
2733	RTTestISubF("IO - Sequential read %RU32", cbBlock);
2734
2735	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(cbBlock);
2736	if (pbBuf)
2737	{
2738	memset(pbBuf, 0xf7, cbBlock);
2739	PROFILE_IO_FN("RTFileRead", fsPerfIoReadWorker(hFile1, cbFile, cbBlock, pbBuf, &offActual, &cSeeks));
2740	RTMemPageFree(pbBuf, cbBlock);
2741	}
2742	else
2743	RTTestSkipped(g_hTest, "insufficient (virtual) memory available");
2744	}
2745
2746
2747	/** preadv is too new to be useful, so we use the readv api via this wrapper. */
2748	DECLINLINE(int) myFileSgReadAt(RTFILE hFile, RTFOFF off, PRTSGBUF pSgBuf, size_t cbToRead, size_t *pcbRead)
2749	{
2750	int rc = RTFileSeek(hFile, off, RTFILE_SEEK_BEGIN, NULL);
2751	if (RT_SUCCESS(rc))
2752	rc = RTFileSgRead(hFile, pSgBuf, cbToRead, pcbRead);
2753	return rc;
2754	}
2755
2756
2757	void fsPerfRead(RTFILE hFile1, RTFILE hFileNoCache, uint64_t cbFile)
2758	{
2759	RTTestISubF("IO - RTFileRead");
2760
2761	/*
2762	* Allocate a big buffer we can play around with. Min size is 1MB.
2763	*/
2764	size_t cbBuf = cbFile < _64M ? (size_t)cbFile : _64M;
2765	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(cbBuf);
2766	while (!pbBuf)
2767	{
2768	cbBuf /= 2;
2769	RTTESTI_CHECK_RETV(cbBuf >= _1M);
2770	pbBuf = (uint8_t *)RTMemPageAlloc(_32M);
2771	}
2772
2773	#if 1
2774	/*
2775	* Start at the beginning and read the full buffer in random small chunks, thereby
2776	* checking that unaligned buffer addresses, size and file offsets work fine.
2777	*/
2778	struct
2779	{
2780	uint64_t offFile;
2781	uint32_t cbMax;
2782	} aRuns[] = { { 0, 127 }, { cbFile - cbBuf, UINT32_MAX }, { 0, UINT32_MAX -1 }};
2783	for (uint32_t i = 0; i < RT_ELEMENTS(aRuns); i++)
2784	{
2785	memset(pbBuf, 0x55, cbBuf);
2786	RTTESTI_CHECK_RC(RTFileSeek(hFile1, aRuns[i].offFile, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
2787	for (size_t offBuf = 0; offBuf < cbBuf; )
2788	{
2789	uint32_t const cbLeft = (uint32_t)(cbBuf - offBuf);
2790	uint32_t const cbToRead = aRuns[i].cbMax < UINT32_MAX / 2 ? RTRandU32Ex(1, RT_MIN(aRuns[i].cbMax, cbLeft))
2791	: aRuns[i].cbMax == UINT32_MAX ? RTRandU32Ex(RT_MAX(cbLeft / 4, 1), cbLeft)
2792	: RTRandU32Ex(cbLeft >= _8K ? _8K : 1, RT_MIN(_1M, cbLeft));
2793	size_t cbActual = 0;
2794	RTTESTI_CHECK_RC(RTFileRead(hFile1, &pbBuf[offBuf], cbToRead, &cbActual), VINF_SUCCESS);
2795	if (cbActual == cbToRead)
2796	{
2797	offBuf += cbActual;
2798	RTTESTI_CHECK_MSG(RTFileTell(hFile1) == aRuns[i].offFile + offBuf,
2799	("%#RX64, expected %#RX64\n", RTFileTell(hFile1), aRuns[i].offFile + offBuf));
2800	}
2801	else
2802	{
2803	RTTestIFailed("Attempting to read %#x bytes at %#zx, only got %#x bytes back! (cbLeft=%#x cbBuf=%#zx)\n",
2804	cbToRead, offBuf, cbActual, cbLeft, cbBuf);
2805	if (cbActual)
2806	offBuf += cbActual;
2807	else
2808	pbBuf[offBuf++] = 0x11;
2809	}
2810	}
2811	fsPerfCheckReadBuf(__LINE__, aRuns[i].offFile, pbBuf, cbBuf);
2812	}
2813
2814	/*
2815	* Test reading beyond the end of the file.
2816	*/
2817	size_t const acbMax[] = { cbBuf, _64K, _16K, _4K, 256 };
2818	uint32_t const aoffFromEos[] =
2819	{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 32, 63, 64, 127, 128, 255, 254, 256, 1023, 1024, 2048,
2820	4092, 4093, 4094, 4095, 4096, 4097, 4098, 4099, 4100, 8192, 16384, 32767, 32768, 32769, 65535, 65536, _1M - 1
2821	};
2822	for (unsigned iMax = 0; iMax < RT_ELEMENTS(acbMax); iMax++)
2823	{
2824	size_t const cbMaxRead = acbMax[iMax];
2825	for (uint32_t iOffFromEos = 0; iOffFromEos < RT_ELEMENTS(aoffFromEos); iOffFromEos++)
2826	{
2827	uint32_t off = aoffFromEos[iOffFromEos];
2828	if (off >= cbMaxRead)
2829	continue;
2830	RTTESTI_CHECK_RC(RTFileSeek(hFile1, cbFile - off, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
2831	size_t cbActual = ~(size_t)0;
2832	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, cbMaxRead, &cbActual), VINF_SUCCESS);
2833	RTTESTI_CHECK(cbActual == off);
2834
2835	RTTESTI_CHECK_RC(RTFileSeek(hFile1, cbFile - off, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
2836	cbActual = ~(size_t)0;
2837	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, off, &cbActual), VINF_SUCCESS);
2838	RTTESTI_CHECK_MSG(cbActual == off, ("%#zx vs %#zx\n", cbActual, off));
2839
2840	cbActual = ~(size_t)0;
2841	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, 1, &cbActual), VINF_SUCCESS);
2842	RTTESTI_CHECK_MSG(cbActual == 0, ("cbActual=%zu\n", cbActual));
2843
2844	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, cbMaxRead, NULL), VERR_EOF);
2845
2846	/* Repeat using native APIs in case IPRT or other layers hid status codes: */
2847	#if defined(RT_OS_OS2) \|\| defined(RT_OS_WINDOWS)
2848	RTTESTI_CHECK_RC(RTFileSeek(hFile1, cbFile - off, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
2849	# ifdef RT_OS_OS2
2850	ULONG cbActual2 = ~(ULONG)0;
2851	APIRET orc = DosRead((HFILE)RTFileToNative(hFile1), pbBuf, cbMaxRead, &cbActual2);
2852	RTTESTI_CHECK_MSG(orc == NO_ERROR, ("orc=%u, expected 0\n", orc));
2853	RTTESTI_CHECK_MSG(cbActual2 == off, ("%#x vs %#x\n", cbActual2, off));
2854	# else
2855	IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER;
2856	NTSTATUS rcNt = NtReadFile((HANDLE)RTFileToNative(hFile1), NULL /hEvent/, NULL /ApcRoutine/, NULL /ApcContext/,
2857	&Ios, pbBuf, (ULONG)cbMaxRead, NULL /poffFile/, NULL /Key/);
2858	if (off == 0)
2859	RTTESTI_CHECK_MSG(rcNt == STATUS_END_OF_FILE, ("rcNt=%#x, expected %#x\n", rcNt, STATUS_END_OF_FILE));
2860	else
2861	RTTESTI_CHECK_MSG(rcNt == STATUS_SUCCESS, ("rcNt=%#x, expected 0 (off=%#x cbMaxRead=%#zx)\n", rcNt, off, cbMaxRead));
2862	RTTESTI_CHECK_MSG(Ios.Information == off, ("%#zx vs %#x\n", Ios.Information, off));
2863	# endif
2864
2865	# ifdef RT_OS_OS2
2866	cbActual2 = ~(ULONG)0;
2867	orc = DosRead((HFILE)RTFileToNative(hFile1), pbBuf, 1, &cbActual2);
2868	RTTESTI_CHECK_MSG(orc == NO_ERROR, ("orc=%u, expected 0\n", orc));
2869	RTTESTI_CHECK_MSG(cbActual2 == 0, ("cbActual2=%u\n", cbActual2));
2870	# else
2871	RTNT_IO_STATUS_BLOCK_REINIT(&Ios);
2872	rcNt = NtReadFile((HANDLE)RTFileToNative(hFile1), NULL /hEvent/, NULL /ApcRoutine/, NULL /ApcContext/,
2873	&Ios, pbBuf, 1, NULL /poffFile/, NULL /Key/);
2874	RTTESTI_CHECK_MSG(rcNt == STATUS_END_OF_FILE, ("rcNt=%#x, expected %#x\n", rcNt, STATUS_END_OF_FILE));
2875	# endif
2876
2877	#endif
2878	}
2879	}
2880
2881	/*
2882	* Test reading beyond end of the file.
2883	*/
2884	for (unsigned iMax = 0; iMax < RT_ELEMENTS(acbMax); iMax++)
2885	{
2886	size_t const cbMaxRead = acbMax[iMax];
2887	for (uint32_t off = 0; off < 256; off++)
2888	{
2889	RTTESTI_CHECK_RC(RTFileSeek(hFile1, cbFile + off, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
2890	size_t cbActual = ~(size_t)0;
2891	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, cbMaxRead, &cbActual), VINF_SUCCESS);
2892	RTTESTI_CHECK(cbActual == 0);
2893
2894	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, cbMaxRead, NULL), VERR_EOF);
2895
2896	/* Repeat using native APIs in case IPRT or other layers hid status codes: */
2897	#if defined(RT_OS_OS2) \|\| defined(RT_OS_WINDOWS)
2898	RTTESTI_CHECK_RC(RTFileSeek(hFile1, cbFile + off, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
2899	# ifdef RT_OS_OS2
2900	ULONG cbActual2 = ~(ULONG)0;
2901	APIRET orc = DosRead((HFILE)RTFileToNative(hFile1), pbBuf, cbMaxRead, &cbActual2);
2902	RTTESTI_CHECK_MSG(orc == NO_ERROR, ("orc=%u, expected 0\n", orc));
2903	RTTESTI_CHECK_MSG(cbActual2 == 0, ("%#x vs %#x\n", cbActual2, off));
2904	# else
2905	IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER;
2906	NTSTATUS rcNt = NtReadFile((HANDLE)RTFileToNative(hFile1), NULL /hEvent/, NULL /ApcRoutine/, NULL /ApcContext/,
2907	&Ios, pbBuf, (ULONG)cbMaxRead, NULL /poffFile/, NULL /Key/);
2908	RTTESTI_CHECK_MSG(rcNt == STATUS_END_OF_FILE, ("rcNt=%#x, expected %#x\n", rcNt, STATUS_END_OF_FILE));
2909	# endif
2910	#endif
2911	}
2912	}
2913
2914	/*
2915	* Do uncached access, must be page aligned.
2916	*/
2917	uint32_t cbPage = PAGE_SIZE;
2918	memset(pbBuf, 0x66, cbBuf);
2919	if (!g_fIgnoreNoCache \|\| hFileNoCache != NIL_RTFILE)
2920	{
2921	RTTESTI_CHECK_RC(RTFileSeek(hFileNoCache, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
2922	for (size_t offBuf = 0; offBuf < cbBuf; )
2923	{
2924	uint32_t const cPagesLeft = (uint32_t)((cbBuf - offBuf) / cbPage);
2925	uint32_t const cPagesToRead = RTRandU32Ex(1, cPagesLeft);
2926	size_t const cbToRead = cPagesToRead * (size_t)cbPage;
2927	size_t cbActual = 0;
2928	RTTESTI_CHECK_RC(RTFileRead(hFileNoCache, &pbBuf[offBuf], cbToRead, &cbActual), VINF_SUCCESS);
2929	if (cbActual == cbToRead)
2930	offBuf += cbActual;
2931	else
2932	{
2933	RTTestIFailed("Attempting to read %#zx bytes at %#zx, only got %#x bytes back!\n", cbToRead, offBuf, cbActual);
2934	if (cbActual)
2935	offBuf += cbActual;
2936	else
2937	{
2938	memset(&pbBuf[offBuf], 0x11, cbPage);
2939	offBuf += cbPage;
2940	}
2941	}
2942	}
2943	fsPerfCheckReadBuf(__LINE__, 0, pbBuf, cbBuf);
2944	}
2945
2946	/*
2947	* Check reading zero bytes at the end of the file.
2948	* Requires native call because RTFileWrite doesn't call kernel on zero byte reads.
2949	*/
2950	RTTESTI_CHECK_RC(RTFileSeek(hFile1, 0, RTFILE_SEEK_END, NULL), VINF_SUCCESS);
2951	# ifdef RT_OS_WINDOWS
2952	IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER;
2953	NTSTATUS rcNt = NtReadFile((HANDLE)RTFileToNative(hFile1), NULL, NULL, NULL, &Ios, pbBuf, 0, NULL, NULL);
2954	RTTESTI_CHECK_MSG(rcNt == STATUS_SUCCESS, ("rcNt=%#x", rcNt));
2955	RTTESTI_CHECK(Ios.Status == STATUS_SUCCESS);
2956	RTTESTI_CHECK(Ios.Information == 0);
2957
2958	RTNT_IO_STATUS_BLOCK_REINIT(&Ios);
2959	rcNt = NtReadFile((HANDLE)RTFileToNative(hFile1), NULL, NULL, NULL, &Ios, pbBuf, 1, NULL, NULL);
2960	RTTESTI_CHECK_MSG(rcNt == STATUS_END_OF_FILE, ("rcNt=%#x", rcNt));
2961	RTTESTI_CHECK(Ios.Status == STATUS_END_OF_FILE);
2962	RTTESTI_CHECK(Ios.Information == 0);
2963	# else
2964	ssize_t cbRead = read((int)RTFileToNative(hFile1), pbBuf, 0);
2965	RTTESTI_CHECK(cbRead == 0);
2966	# endif
2967
2968	#else
2969	RT_NOREF(hFileNoCache);
2970	#endif
2971
2972	/*
2973	* Scatter read function operation.
2974	*/
2975	#ifdef RT_OS_WINDOWS
2976	/** @todo RTFileSgReadAt is just a RTFileReadAt loop for windows NT. Need
2977	* to use ReadFileScatter (nocache + page aligned). */
2978	#elif !defined(RT_OS_OS2) /** @todo implement RTFileSg using list i/o */
2979
2980	# ifdef UIO_MAXIOV
2981	RTSGSEG aSegs[UIO_MAXIOV];
2982	# else
2983	RTSGSEG aSegs[512];
2984	# endif
2985	RTSGBUF SgBuf;
2986	uint32_t cIncr = 1;
2987	for (uint32_t cSegs = 1; cSegs <= RT_ELEMENTS(aSegs); cSegs += cIncr)
2988	{
2989	size_t const cbSeg = cbBuf / cSegs;
2990	size_t const cbToRead = cbSeg * cSegs;
2991	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
2992	{
2993	aSegs[iSeg].cbSeg = cbSeg;
2994	aSegs[iSeg].pvSeg = &pbBuf[cbToRead - (iSeg + 1) * cbSeg];
2995	}
2996	RTSgBufInit(&SgBuf, &aSegs[0], cSegs);
2997	int rc = myFileSgReadAt(hFile1, 0, &SgBuf, cbToRead, NULL);
2998	if (RT_SUCCESS(rc))
2999	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
3000	{
3001	if (!fsPerfCheckReadBuf(__LINE__, iSeg * cbSeg, &pbBuf[cbToRead - (iSeg + 1) * cbSeg], cbSeg))
3002	{
3003	cSegs = RT_ELEMENTS(aSegs);
3004	break;
3005	}
3006	}
3007	else
3008	{
3009	RTTestIFailed("myFileSgReadAt failed: %Rrc - cSegs=%u cbSegs=%#zx cbToRead=%#zx", rc, cSegs, cbSeg, cbToRead);
3010	break;
3011	}
3012	if (cSegs == 16)
3013	cIncr = 7;
3014	else if (cSegs == 16 * 7 + 16 /= 128/)
3015	cIncr = 64;
3016	}
3017
3018	for (uint32_t iTest = 0; iTest < 128; iTest++)
3019	{
3020	uint32_t cSegs = RTRandU32Ex(1, RT_ELEMENTS(aSegs));
3021	uint32_t iZeroSeg = cSegs > 10 ? RTRandU32Ex(0, cSegs - 1) : UINT32_MAX / 2;
3022	uint32_t cZeroSegs = cSegs > 10 ? RTRandU32Ex(1, RT_MIN(cSegs - iZeroSeg, 25)) : 0;
3023	size_t cbToRead = 0;
3024	size_t cbLeft = cbBuf;
3025	uint8_t *pbCur = &pbBuf[cbBuf];
3026	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
3027	{
3028	uint32_t iAlign = RTRandU32Ex(0, 3);
3029	if (iAlign & 2) /* end is page aligned */
3030	{
3031	cbLeft -= (uintptr_t)pbCur & PAGE_OFFSET_MASK;
3032	pbCur -= (uintptr_t)pbCur & PAGE_OFFSET_MASK;
3033	}
3034
3035	size_t cbSegOthers = (cSegs - iSeg) * _8K;
3036	size_t cbSegMax = cbLeft > cbSegOthers ? cbLeft - cbSegOthers
3037	: cbLeft > cSegs ? cbLeft - cSegs
3038	: cbLeft;
3039	size_t cbSeg = cbLeft != 0 ? RTRandU32Ex(0, cbSegMax) : 0;
3040	if (iAlign & 1) /* start is page aligned */
3041	cbSeg += ((uintptr_t)pbCur - cbSeg) & PAGE_OFFSET_MASK;
3042
3043	if (iSeg - iZeroSeg < cZeroSegs)
3044	cbSeg = 0;
3045
3046	cbToRead += cbSeg;
3047	cbLeft -= cbSeg;
3048	pbCur -= cbSeg;
3049	aSegs[iSeg].cbSeg = cbSeg;
3050	aSegs[iSeg].pvSeg = pbCur;
3051	}
3052
3053	uint64_t offFile = cbToRead < cbFile ? RTRandU64Ex(0, cbFile - cbToRead) : 0;
3054	RTSgBufInit(&SgBuf, &aSegs[0], cSegs);
3055	int rc = myFileSgReadAt(hFile1, offFile, &SgBuf, cbToRead, NULL);
3056	if (RT_SUCCESS(rc))
3057	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
3058	{
3059	if (!fsPerfCheckReadBuf(__LINE__, offFile, (uint8_t *)aSegs[iSeg].pvSeg, aSegs[iSeg].cbSeg))
3060	{
3061	RTTestIFailureDetails("iSeg=%#x cSegs=%#x cbSeg=%#zx cbToRead=%#zx\n", iSeg, cSegs, aSegs[iSeg].cbSeg, cbToRead);
3062	iTest = _16K;
3063	break;
3064	}
3065	offFile += aSegs[iSeg].cbSeg;
3066	}
3067	else
3068	{
3069	RTTestIFailed("myFileSgReadAt failed: %Rrc - cSegs=%#x cbToRead=%#zx", rc, cSegs, cbToRead);
3070	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
3071	RTTestIFailureDetails("aSeg[%u] = %p LB %#zx (last %p)\n", iSeg, aSegs[iSeg].pvSeg, aSegs[iSeg].cbSeg,
3072	(uint8_t *)aSegs[iSeg].pvSeg + aSegs[iSeg].cbSeg - 1);
3073	break;
3074	}
3075	}
3076
3077	/* reading beyond the end of the file */
3078	for (uint32_t cSegs = 1; cSegs < 6; cSegs++)
3079	for (uint32_t iTest = 0; iTest < 128; iTest++)
3080	{
3081	uint32_t const cbToRead = RTRandU32Ex(0, cbBuf);
3082	uint32_t const cbBeyond = cbToRead ? RTRandU32Ex(0, cbToRead) : 0;
3083	uint32_t const cbSeg = cbToRead / cSegs;
3084	uint32_t cbLeft = cbToRead;
3085	uint8_t *pbCur = &pbBuf[cbToRead];
3086	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
3087	{
3088	aSegs[iSeg].cbSeg = iSeg + 1 < cSegs ? cbSeg : cbLeft;
3089	aSegs[iSeg].pvSeg = pbCur -= aSegs[iSeg].cbSeg;
3090	cbLeft -= aSegs[iSeg].cbSeg;
3091	}
3092	Assert(pbCur == pbBuf);
3093
3094	uint64_t offFile = cbFile + cbBeyond - cbToRead;
3095	RTSgBufInit(&SgBuf, &aSegs[0], cSegs);
3096	int rcExpect = cbBeyond == 0 \|\| cbToRead == 0 ? VINF_SUCCESS : VERR_EOF;
3097	int rc = myFileSgReadAt(hFile1, offFile, &SgBuf, cbToRead, NULL);
3098	if (rc != rcExpect)
3099	{
3100	RTTestIFailed("myFileSgReadAt failed: %Rrc - cSegs=%#x cbToRead=%#zx cbBeyond=%#zx\n", rc, cSegs, cbToRead, cbBeyond);
3101	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
3102	RTTestIFailureDetails("aSeg[%u] = %p LB %#zx (last %p)\n", iSeg, aSegs[iSeg].pvSeg, aSegs[iSeg].cbSeg,
3103	(uint8_t *)aSegs[iSeg].pvSeg + aSegs[iSeg].cbSeg - 1);
3104	}
3105
3106	RTSgBufInit(&SgBuf, &aSegs[0], cSegs);
3107	size_t cbActual = 0;
3108	rc = myFileSgReadAt(hFile1, offFile, &SgBuf, cbToRead, &cbActual);
3109	if (rc != VINF_SUCCESS \|\| cbActual != cbToRead - cbBeyond)
3110	RTTestIFailed("myFileSgReadAt failed: %Rrc cbActual=%#zu - cSegs=%#x cbToRead=%#zx cbBeyond=%#zx expected %#zx\n",
3111	rc, cbActual, cSegs, cbToRead, cbBeyond, cbToRead - cbBeyond);
3112	if (RT_SUCCESS(rc) && cbActual > 0)
3113	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
3114	{
3115	if (!fsPerfCheckReadBuf(__LINE__, offFile, (uint8_t *)aSegs[iSeg].pvSeg, RT_MIN(cbActual, aSegs[iSeg].cbSeg)))
3116	{
3117	RTTestIFailureDetails("iSeg=%#x cSegs=%#x cbSeg=%#zx cbActual%#zx cbToRead=%#zx cbBeyond=%#zx\n",
3118	iSeg, cSegs, aSegs[iSeg].cbSeg, cbActual, cbToRead, cbBeyond);
3119	iTest = _16K;
3120	break;
3121	}
3122	if (cbActual <= aSegs[iSeg].cbSeg)
3123	break;
3124	cbActual -= aSegs[iSeg].cbSeg;
3125	offFile += aSegs[iSeg].cbSeg;
3126	}
3127	}
3128
3129	#endif
3130
3131	/*
3132	* Other OS specific stuff.
3133	*/
3134	#ifdef RT_OS_WINDOWS
3135	/* Check that reading at an offset modifies the position: */
3136	RTTESTI_CHECK_RC(RTFileSeek(hFile1, 0, RTFILE_SEEK_END, NULL), VINF_SUCCESS);
3137	RTTESTI_CHECK(RTFileTell(hFile1) == cbFile);
3138
3139	RTNT_IO_STATUS_BLOCK_REINIT(&Ios);
3140	LARGE_INTEGER offNt;
3141	offNt.QuadPart = cbFile / 2;
3142	rcNt = NtReadFile((HANDLE)RTFileToNative(hFile1), NULL, NULL, NULL, &Ios, pbBuf, _4K, &offNt, NULL);
3143	RTTESTI_CHECK_MSG(rcNt == STATUS_SUCCESS, ("rcNt=%#x", rcNt));
3144	RTTESTI_CHECK(Ios.Status == STATUS_SUCCESS);
3145	RTTESTI_CHECK(Ios.Information == _4K);
3146	RTTESTI_CHECK(RTFileTell(hFile1) == cbFile / 2 + _4K);
3147	fsPerfCheckReadBuf(__LINE__, cbFile / 2, pbBuf, _4K);
3148	#endif
3149
3150
3151	RTMemPageFree(pbBuf, cbBuf);
3152	}
3153
3154
3155	/**
3156	* One RTFileWrite profiling iteration.
3157	*/
3158	DECL_FORCE_INLINE(int) fsPerfIoWriteWorker(RTFILE hFile1, uint64_t cbFile, uint32_t cbBlock, uint8_t *pbBlock,
3159	uint64_t poffActual, uint32_t pcSeeks)
3160	{
3161	/* Do we need to seek back to the start? */
3162	if (*poffActual + cbBlock <= cbFile)
3163	{ /* likely */ }
3164	else
3165	{
3166	RTTESTI_CHECK_RC_RET(RTFileSeek(hFile1, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS, rcCheck);
3167	*pcSeeks += 1;
3168	*poffActual = 0;
3169	}
3170
3171	size_t cbActuallyWritten = 0;
3172	RTTESTI_CHECK_RC_RET(RTFileWrite(hFile1, pbBlock, cbBlock, &cbActuallyWritten), VINF_SUCCESS, rcCheck);
3173	if (cbActuallyWritten == cbBlock)
3174	{
3175	*poffActual += cbActuallyWritten;
3176	return VINF_SUCCESS;
3177	}
3178	RTTestIFailed("RTFileWrite at %#RX64 returned just %#x bytes, expected %#x", *poffActual, cbActuallyWritten, cbBlock);
3179	*poffActual += cbActuallyWritten;
3180	return VERR_WRITE_ERROR;
3181	}
3182
3183
3184	void fsPerfIoWriteBlockSize(RTFILE hFile1, uint64_t cbFile, uint32_t cbBlock)
3185	{
3186	RTTestISubF("IO - Sequential write %RU32", cbBlock);
3187
3188	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(cbBlock);
3189	if (pbBuf)
3190	{
3191	memset(pbBuf, 0xf7, cbBlock);
3192	PROFILE_IO_FN("RTFileWrite", fsPerfIoWriteWorker(hFile1, cbFile, cbBlock, pbBuf, &offActual, &cSeeks));
3193	RTMemPageFree(pbBuf, cbBlock);
3194	}
3195	else
3196	RTTestSkipped(g_hTest, "insufficient (virtual) memory available");
3197	}
3198
3199
3200	/** pwritev is too new to be useful, so we use the writev api via this wrapper. */
3201	DECLINLINE(int) myFileSgWriteAt(RTFILE hFile, RTFOFF off, PRTSGBUF pSgBuf, size_t cbToWrite, size_t *pcbWritten)
3202	{
3203	int rc = RTFileSeek(hFile, off, RTFILE_SEEK_BEGIN, NULL);
3204	if (RT_SUCCESS(rc))
3205	rc = RTFileSgWrite(hFile, pSgBuf, cbToWrite, pcbWritten);
3206	return rc;
3207	}
3208
3209
3210	void fsPerfWrite(RTFILE hFile1, RTFILE hFileNoCache, RTFILE hFileWriteThru, uint64_t cbFile)
3211	{
3212	RTTestISubF("IO - RTFileWrite");
3213
3214	/*
3215	* Allocate a big buffer we can play around with. Min size is 1MB.
3216	*/
3217	size_t cbBuf = cbFile < _64M ? (size_t)cbFile : _64M;
3218	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(cbBuf);
3219	while (!pbBuf)
3220	{
3221	cbBuf /= 2;
3222	RTTESTI_CHECK_RETV(cbBuf >= _1M);
3223	pbBuf = (uint8_t *)RTMemPageAlloc(_32M);
3224	}
3225
3226	uint8_t bFiller = 0x88;
3227
3228	#if 1
3229	/*
3230	* Start at the beginning and write out the full buffer in random small chunks, thereby
3231	* checking that unaligned buffer addresses, size and file offsets work fine.
3232	*/
3233	struct
3234	{
3235	uint64_t offFile;
3236	uint32_t cbMax;
3237	} aRuns[] = { { 0, 127 }, { cbFile - cbBuf, UINT32_MAX }, { 0, UINT32_MAX -1 }};
3238	for (uint32_t i = 0; i < RT_ELEMENTS(aRuns); i++, bFiller)
3239	{
3240	fsPerfFillWriteBuf(aRuns[i].offFile, pbBuf, cbBuf, bFiller);
3241	fsPerfCheckReadBuf(__LINE__, aRuns[i].offFile, pbBuf, cbBuf, bFiller);
3242
3243	RTTESTI_CHECK_RC(RTFileSeek(hFile1, aRuns[i].offFile, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
3244	for (size_t offBuf = 0; offBuf < cbBuf; )
3245	{
3246	uint32_t const cbLeft = (uint32_t)(cbBuf - offBuf);
3247	uint32_t const cbToWrite = aRuns[i].cbMax < UINT32_MAX / 2 ? RTRandU32Ex(1, RT_MIN(aRuns[i].cbMax, cbLeft))
3248	: aRuns[i].cbMax == UINT32_MAX ? RTRandU32Ex(RT_MAX(cbLeft / 4, 1), cbLeft)
3249	: RTRandU32Ex(cbLeft >= _8K ? _8K : 1, RT_MIN(_1M, cbLeft));
3250	size_t cbActual = 0;
3251	RTTESTI_CHECK_RC(RTFileWrite(hFile1, &pbBuf[offBuf], cbToWrite, &cbActual), VINF_SUCCESS);
3252	if (cbActual == cbToWrite)
3253	{
3254	offBuf += cbActual;
3255	RTTESTI_CHECK_MSG(RTFileTell(hFile1) == aRuns[i].offFile + offBuf,
3256	("%#RX64, expected %#RX64\n", RTFileTell(hFile1), aRuns[i].offFile + offBuf));
3257	}
3258	else
3259	{
3260	RTTestIFailed("Attempting to write %#x bytes at %#zx (%#x left), only got %#x written!\n",
3261	cbToWrite, offBuf, cbLeft, cbActual);
3262	if (cbActual)
3263	offBuf += cbActual;
3264	else
3265	pbBuf[offBuf++] = 0x11;
3266	}
3267	}
3268
3269	RTTESTI_CHECK_RC(RTFileReadAt(hFile1, aRuns[i].offFile, pbBuf, cbBuf, NULL), VINF_SUCCESS);
3270	fsPerfCheckReadBuf(__LINE__, aRuns[i].offFile, pbBuf, cbBuf, bFiller);
3271	}
3272
3273
3274	/*
3275	* Do uncached and write-thru accesses, must be page aligned.
3276	*/
3277	RTFILE ahFiles[2] = { hFileWriteThru, hFileNoCache };
3278	for (unsigned iFile = 0; iFile < RT_ELEMENTS(ahFiles); iFile++, bFiller++)
3279	{
3280	if (g_fIgnoreNoCache && ahFiles[iFile] == NIL_RTFILE)
3281	continue;
3282
3283	fsPerfFillWriteBuf(0, pbBuf, cbBuf, bFiller);
3284	fsPerfCheckReadBuf(__LINE__, 0, pbBuf, cbBuf, bFiller);
3285	RTTESTI_CHECK_RC(RTFileSeek(ahFiles[iFile], 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
3286
3287	uint32_t cbPage = PAGE_SIZE;
3288	for (size_t offBuf = 0; offBuf < cbBuf; )
3289	{
3290	uint32_t const cPagesLeft = (uint32_t)((cbBuf - offBuf) / cbPage);
3291	uint32_t const cPagesToWrite = RTRandU32Ex(1, cPagesLeft);
3292	size_t const cbToWrite = cPagesToWrite * (size_t)cbPage;
3293	size_t cbActual = 0;
3294	RTTESTI_CHECK_RC(RTFileWrite(ahFiles[iFile], &pbBuf[offBuf], cbToWrite, &cbActual), VINF_SUCCESS);
3295	if (cbActual == cbToWrite)
3296	{
3297	RTTESTI_CHECK_RC(RTFileReadAt(hFile1, offBuf, pbBuf, cbToWrite, NULL), VINF_SUCCESS);
3298	fsPerfCheckReadBuf(__LINE__, offBuf, pbBuf, cbToWrite, bFiller);
3299	offBuf += cbActual;
3300	}
3301	else
3302	{
3303	RTTestIFailed("Attempting to read %#zx bytes at %#zx, only got %#x written!\n", cbToWrite, offBuf, cbActual);
3304	if (cbActual)
3305	offBuf += cbActual;
3306	else
3307	{
3308	memset(&pbBuf[offBuf], 0x11, cbPage);
3309	offBuf += cbPage;
3310	}
3311	}
3312	}
3313
3314	RTTESTI_CHECK_RC(RTFileReadAt(ahFiles[iFile], 0, pbBuf, cbBuf, NULL), VINF_SUCCESS);
3315	fsPerfCheckReadBuf(__LINE__, 0, pbBuf, cbBuf, bFiller);
3316	}
3317
3318	/*
3319	* Check the behavior of writing zero bytes to the file _4K from the end
3320	* using native API. In the olden days zero sized write have been known
3321	* to be used to truncate a file.
3322	*/
3323	RTTESTI_CHECK_RC(RTFileSeek(hFile1, -_4K, RTFILE_SEEK_END, NULL), VINF_SUCCESS);
3324	# ifdef RT_OS_WINDOWS
3325	IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER;
3326	NTSTATUS rcNt = NtWriteFile((HANDLE)RTFileToNative(hFile1), NULL, NULL, NULL, &Ios, pbBuf, 0, NULL, NULL);
3327	RTTESTI_CHECK_MSG(rcNt == STATUS_SUCCESS, ("rcNt=%#x", rcNt));
3328	RTTESTI_CHECK(Ios.Status == STATUS_SUCCESS);
3329	RTTESTI_CHECK(Ios.Information == 0);
3330	# else
3331	ssize_t cbWritten = write((int)RTFileToNative(hFile1), pbBuf, 0);
3332	RTTESTI_CHECK(cbWritten == 0);
3333	# endif
3334	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, _4K, NULL), VINF_SUCCESS);
3335	fsPerfCheckReadBuf(__LINE__, cbFile - _4K, pbBuf, _4K, pbBuf[0x8]);
3336
3337	#else
3338	RT_NOREF(hFileNoCache, hFileWriteThru);
3339	#endif
3340
3341	/*
3342	* Gather write function operation.
3343	*/
3344	#ifdef RT_OS_WINDOWS
3345	/** @todo RTFileSgWriteAt is just a RTFileWriteAt loop for windows NT. Need
3346	* to use WriteFileGather (nocache + page aligned). */
3347	#elif !defined(RT_OS_OS2) /** @todo implement RTFileSg using list i/o */
3348
3349	# ifdef UIO_MAXIOV
3350	RTSGSEG aSegs[UIO_MAXIOV];
3351	# else
3352	RTSGSEG aSegs[512];
3353	# endif
3354	RTSGBUF SgBuf;
3355	uint32_t cIncr = 1;
3356	for (uint32_t cSegs = 1; cSegs <= RT_ELEMENTS(aSegs); cSegs += cIncr, bFiller++)
3357	{
3358	size_t const cbSeg = cbBuf / cSegs;
3359	size_t const cbToWrite = cbSeg * cSegs;
3360	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
3361	{
3362	aSegs[iSeg].cbSeg = cbSeg;
3363	aSegs[iSeg].pvSeg = &pbBuf[cbToWrite - (iSeg + 1) * cbSeg];
3364	fsPerfFillWriteBuf(iSeg * cbSeg, (uint8_t *)aSegs[iSeg].pvSeg, cbSeg, bFiller);
3365	}
3366	RTSgBufInit(&SgBuf, &aSegs[0], cSegs);
3367	int rc = myFileSgWriteAt(hFile1, 0, &SgBuf, cbToWrite, NULL);
3368	if (RT_SUCCESS(rc))
3369	{
3370	RTTESTI_CHECK_RC(RTFileReadAt(hFile1, 0, pbBuf, cbToWrite, NULL), VINF_SUCCESS);
3371	fsPerfCheckReadBuf(__LINE__, 0, pbBuf, cbToWrite, bFiller);
3372	}
3373	else
3374	{
3375	RTTestIFailed("myFileSgWriteAt failed: %Rrc - cSegs=%u cbSegs=%#zx cbToWrite=%#zx", rc, cSegs, cbSeg, cbToWrite);
3376	break;
3377	}
3378	if (cSegs == 16)
3379	cIncr = 7;
3380	else if (cSegs == 16 * 7 + 16 /= 128/)
3381	cIncr = 64;
3382	}
3383
3384	/* random stuff, including zero segments. */
3385	for (uint32_t iTest = 0; iTest < 128; iTest++, bFiller++)
3386	{
3387	uint32_t cSegs = RTRandU32Ex(1, RT_ELEMENTS(aSegs));
3388	uint32_t iZeroSeg = cSegs > 10 ? RTRandU32Ex(0, cSegs - 1) : UINT32_MAX / 2;
3389	uint32_t cZeroSegs = cSegs > 10 ? RTRandU32Ex(1, RT_MIN(cSegs - iZeroSeg, 25)) : 0;
3390	size_t cbToWrite = 0;
3391	size_t cbLeft = cbBuf;
3392	uint8_t *pbCur = &pbBuf[cbBuf];
3393	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
3394	{
3395	uint32_t iAlign = RTRandU32Ex(0, 3);
3396	if (iAlign & 2) /* end is page aligned */
3397	{
3398	cbLeft -= (uintptr_t)pbCur & PAGE_OFFSET_MASK;
3399	pbCur -= (uintptr_t)pbCur & PAGE_OFFSET_MASK;
3400	}
3401
3402	size_t cbSegOthers = (cSegs - iSeg) * _8K;
3403	size_t cbSegMax = cbLeft > cbSegOthers ? cbLeft - cbSegOthers
3404	: cbLeft > cSegs ? cbLeft - cSegs
3405	: cbLeft;
3406	size_t cbSeg = cbLeft != 0 ? RTRandU32Ex(0, cbSegMax) : 0;
3407	if (iAlign & 1) /* start is page aligned */
3408	cbSeg += ((uintptr_t)pbCur - cbSeg) & PAGE_OFFSET_MASK;
3409
3410	if (iSeg - iZeroSeg < cZeroSegs)
3411	cbSeg = 0;
3412
3413	cbToWrite += cbSeg;
3414	cbLeft -= cbSeg;
3415	pbCur -= cbSeg;
3416	aSegs[iSeg].cbSeg = cbSeg;
3417	aSegs[iSeg].pvSeg = pbCur;
3418	}
3419
3420	uint64_t const offFile = cbToWrite < cbFile ? RTRandU64Ex(0, cbFile - cbToWrite) : 0;
3421	uint64_t offFill = offFile;
3422	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
3423	if (aSegs[iSeg].cbSeg)
3424	{
3425	fsPerfFillWriteBuf(offFill, (uint8_t *)aSegs[iSeg].pvSeg, aSegs[iSeg].cbSeg, bFiller);
3426	offFill += aSegs[iSeg].cbSeg;
3427	}
3428
3429	RTSgBufInit(&SgBuf, &aSegs[0], cSegs);
3430	int rc = myFileSgWriteAt(hFile1, offFile, &SgBuf, cbToWrite, NULL);
3431	if (RT_SUCCESS(rc))
3432	{
3433	RTTESTI_CHECK_RC(RTFileReadAt(hFile1, offFile, pbBuf, cbToWrite, NULL), VINF_SUCCESS);
3434	fsPerfCheckReadBuf(__LINE__, offFile, pbBuf, cbToWrite, bFiller);
3435	}
3436	else
3437	{
3438	RTTestIFailed("myFileSgWriteAt failed: %Rrc - cSegs=%#x cbToWrite=%#zx", rc, cSegs, cbToWrite);
3439	break;
3440	}
3441	}
3442
3443	#endif
3444
3445	/*
3446	* Other OS specific stuff.
3447	*/
3448	#ifdef RT_OS_WINDOWS
3449	/* Check that reading at an offset modifies the position: */
3450	RTTESTI_CHECK_RC(RTFileReadAt(hFile1, cbFile / 2, pbBuf, _4K, NULL), VINF_SUCCESS);
3451	RTTESTI_CHECK_RC(RTFileSeek(hFile1, 0, RTFILE_SEEK_END, NULL), VINF_SUCCESS);
3452	RTTESTI_CHECK(RTFileTell(hFile1) == cbFile);
3453
3454	RTNT_IO_STATUS_BLOCK_REINIT(&Ios);
3455	LARGE_INTEGER offNt;
3456	offNt.QuadPart = cbFile / 2;
3457	rcNt = NtWriteFile((HANDLE)RTFileToNative(hFile1), NULL, NULL, NULL, &Ios, pbBuf, _4K, &offNt, NULL);
3458	RTTESTI_CHECK_MSG(rcNt == STATUS_SUCCESS, ("rcNt=%#x", rcNt));
3459	RTTESTI_CHECK(Ios.Status == STATUS_SUCCESS);
3460	RTTESTI_CHECK(Ios.Information == _4K);
3461	RTTESTI_CHECK(RTFileTell(hFile1) == cbFile / 2 + _4K);
3462	#endif
3463
3464	RTMemPageFree(pbBuf, cbBuf);
3465	}
3466
3467
3468	/**
3469	* Worker for testing RTFileFlush.
3470	*/
3471	DECL_FORCE_INLINE(int) fsPerfFSyncWorker(RTFILE hFile1, uint64_t cbFile, uint8_t pbBuf, size_t cbBuf, uint64_t poffFile)
3472	{
3473	if (*poffFile + cbBuf <= cbFile)
3474	{ /* likely */ }
3475	else
3476	{
3477	RTTESTI_CHECK_RC(RTFileSeek(hFile1, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
3478	*poffFile = 0;
3479	}
3480
3481	RTTESTI_CHECK_RC_RET(RTFileWrite(hFile1, pbBuf, cbBuf, NULL), VINF_SUCCESS, rcCheck);
3482	RTTESTI_CHECK_RC_RET(RTFileFlush(hFile1), VINF_SUCCESS, rcCheck);
3483
3484	*poffFile += cbBuf;
3485	return VINF_SUCCESS;
3486	}
3487
3488
3489	void fsPerfFSync(RTFILE hFile1, uint64_t cbFile)
3490	{
3491	RTTestISub("fsync");
3492
3493	RTTESTI_CHECK_RC(RTFileFlush(hFile1), VINF_SUCCESS);
3494
3495	PROFILE_FN(RTFileFlush(hFile1), g_nsTestRun, "RTFileFlush");
3496
3497	size_t cbBuf = PAGE_SIZE;
3498	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(cbBuf);
3499	RTTESTI_CHECK_RETV(pbBuf != NULL);
3500	memset(pbBuf, 0xf4, cbBuf);
3501
3502	RTTESTI_CHECK_RC(RTFileSeek(hFile1, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
3503	uint64_t offFile = 0;
3504	PROFILE_FN(fsPerfFSyncWorker(hFile1, cbFile, pbBuf, cbBuf, &offFile), g_nsTestRun, "RTFileWrite[Page]/RTFileFlush");
3505
3506	RTMemPageFree(pbBuf, cbBuf);
3507	}
3508
3509
3510	#ifndef RT_OS_OS2
3511	/**
3512	* Worker for profiling msync.
3513	*/
3514	DECL_FORCE_INLINE(int) fsPerfMSyncWorker(uint8_t pbMapping, size_t offMapping, size_t cbFlush, size_t pcbFlushed)
3515	{
3516	uint8_t *pbCur = &pbMapping[offMapping];
3517	for (size_t offFlush = 0; offFlush < cbFlush; offFlush += PAGE_SIZE)
3518	(size_t volatile )&pbCur[offFlush + 8] = cbFlush;
3519	# ifdef RT_OS_WINDOWS
3520	RTTESTI_CHECK(FlushViewOfFile(pbCur, cbFlush));
3521	# else
3522	RTTESTI_CHECK(msync(pbCur, cbFlush, MS_SYNC) == 0);
3523	# endif
3524	if (*pcbFlushed < offMapping + cbFlush)
3525	*pcbFlushed = offMapping + cbFlush;
3526	return VINF_SUCCESS;
3527	}
3528	#endif /* !RT_OS_OS2 */
3529
3530
3531	void fsPerfMMap(RTFILE hFile1, RTFILE hFileNoCache, uint64_t cbFile)
3532	{
3533	RTTestISub("mmap");
3534	#if !defined(RT_OS_OS2)
3535	static const char * const s_apszStates[] = { "readonly", "writecopy", "readwrite" };
3536	enum { kMMap_ReadOnly = 0, kMMap_WriteCopy, kMMap_ReadWrite, kMMap_End };
3537	for (int enmState = kMMap_ReadOnly; enmState < kMMap_End; enmState++)
3538	{
3539	/*
3540	* Do the mapping.
3541	*/
3542	size_t cbMapping = (size_t)cbFile;
3543	if (cbMapping != cbFile)
3544	cbMapping = _256M;
3545	uint8_t *pbMapping;
3546
3547	# ifdef RT_OS_WINDOWS
3548	HANDLE hSection;
3549	pbMapping = NULL;
3550	for (;; cbMapping /= 2)
3551	{
3552	hSection = CreateFileMapping((HANDLE)RTFileToNative(hFile1), NULL,
3553	enmState == kMMap_ReadOnly ? PAGE_READONLY
3554	: enmState == kMMap_WriteCopy ? PAGE_WRITECOPY : PAGE_READWRITE,
3555	(uint32_t)((uint64_t)cbMapping >> 32), (uint32_t)cbMapping, NULL);
3556	DWORD dwErr1 = GetLastError();
3557	DWORD dwErr2 = 0;
3558	if (hSection != NULL)
3559	{
3560	pbMapping = (uint8_t *)MapViewOfFile(hSection,
3561	enmState == kMMap_ReadOnly ? FILE_MAP_READ
3562	: enmState == kMMap_WriteCopy ? FILE_MAP_COPY
3563	: FILE_MAP_WRITE,
3564	0, 0, cbMapping);
3565	if (pbMapping)
3566	break;
3567	dwErr2 = GetLastError();
3568	CloseHandle(hSection);
3569	}
3570	if (cbMapping <= _2M)
3571	{
3572	RTTestIFailed("%u/%s: CreateFileMapping or MapViewOfFile failed: %u, %u",
3573	enmState, s_apszStates[enmState], dwErr1, dwErr2);
3574	break;
3575	}
3576	}
3577	# else
3578	for (;; cbMapping /= 2)
3579	{
3580	pbMapping = (uint8_t *)mmap(NULL, cbMapping,
3581	enmState == kMMap_ReadOnly ? PROT_READ : PROT_READ \| PROT_WRITE,
3582	enmState == kMMap_WriteCopy ? MAP_PRIVATE : MAP_SHARED,
3583	(int)RTFileToNative(hFile1), 0);
3584	if ((void *)pbMapping != MAP_FAILED)
3585	break;
3586	if (cbMapping <= _2M)
3587	{
3588	RTTestIFailed("%u/%s: mmap failed: %s (%u)", enmState, s_apszStates[enmState], strerror(errno), errno);
3589	break;
3590	}
3591	}
3592	# endif
3593	if (cbMapping <= _2M)
3594	continue;
3595
3596	/*
3597	* Time page-ins just for fun.
3598	*/
3599	size_t const cPages = cbMapping >> PAGE_SHIFT;
3600	size_t uDummy = 0;
3601	uint64_t ns = RTTimeNanoTS();
3602	for (size_t iPage = 0; iPage < cPages; iPage++)
3603	uDummy += ASMAtomicReadU8(&pbMapping[iPage << PAGE_SHIFT]);
3604	ns = RTTimeNanoTS() - ns;
3605	RTTestIValueF(ns / cPages, RTTESTUNIT_NS_PER_OCCURRENCE, "page-in %s", s_apszStates[enmState]);
3606
3607	/* Check the content. */
3608	fsPerfCheckReadBuf(__LINE__, 0, pbMapping, cbMapping);
3609
3610	if (enmState != kMMap_ReadOnly)
3611	{
3612	/* Write stuff to the first two megabytes. In the COW case, we'll detect
3613	corruption of shared data during content checking of the RW iterations. */
3614	fsPerfFillWriteBuf(0, pbMapping, _2M, 0xf7);
3615	if (enmState == kMMap_ReadWrite)
3616	{
3617	/* For RW we can try read back from the file handle and check if we get
3618	a match there first. */
3619	uint8_t abBuf[_4K];
3620	for (uint32_t off = 0; off < _2M; off += sizeof(abBuf))
3621	{
3622	RTTESTI_CHECK_RC(RTFileReadAt(hFile1, off, abBuf, sizeof(abBuf), NULL), VINF_SUCCESS);
3623	fsPerfCheckReadBuf(__LINE__, off, abBuf, sizeof(abBuf), 0xf7);
3624	}
3625	# ifdef RT_OS_WINDOWS
3626	RTTESTI_CHECK(FlushViewOfFile(pbMapping, _2M));
3627	# else
3628	RTTESTI_CHECK(msync(pbMapping, _2M, MS_SYNC) == 0);
3629	# endif
3630
3631	/*
3632	* Time modifying and flushing a few different number of pages.
3633	*/
3634	static size_t const s_acbFlush[] = { PAGE_SIZE, PAGE_SIZE * 2, PAGE_SIZE * 3, PAGE_SIZE * 8, PAGE_SIZE * 16, _2M };
3635	for (unsigned iFlushSize = 0 ; iFlushSize < RT_ELEMENTS(s_acbFlush); iFlushSize++)
3636	{
3637	size_t const cbFlush = s_acbFlush[iFlushSize];
3638	if (cbFlush > cbMapping)
3639	continue;
3640
3641	char szDesc[80];
3642	RTStrPrintf(szDesc, sizeof(szDesc), "touch/flush/%zu", cbFlush);
3643	size_t const cFlushes = cbMapping / cbFlush;
3644	size_t const cbMappingUsed = cFlushes * cbFlush;
3645	size_t cbFlushed = 0;
3646	PROFILE_FN(fsPerfMSyncWorker(pbMapping, (iIteration * cbFlush) % cbMappingUsed, cbFlush, &cbFlushed),
3647	g_nsTestRun, szDesc);
3648
3649	/*
3650	* Check that all the changes made it thru to the file:
3651	*/
3652	if (!g_fIgnoreNoCache \|\| hFileNoCache != NIL_RTFILE)
3653	{
3654	size_t cbBuf = _2M;
3655	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(cbBuf);
3656	if (!pbBuf)
3657	{
3658	cbBuf = _4K;
3659	pbBuf = (uint8_t *)RTMemPageAlloc(cbBuf);
3660	}
3661	RTTESTI_CHECK(pbBuf != NULL);
3662	if (pbBuf)
3663	{
3664	RTTESTI_CHECK_RC(RTFileSeek(hFileNoCache, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
3665	size_t const cbToCheck = RT_MIN(cFlushes * cbFlush, cbFlushed);
3666	unsigned cErrors = 0;
3667	for (size_t offBuf = 0; cErrors < 32 && offBuf < cbToCheck; offBuf += cbBuf)
3668	{
3669	size_t cbToRead = RT_MIN(cbBuf, cbToCheck - offBuf);
3670	RTTESTI_CHECK_RC(RTFileRead(hFileNoCache, pbBuf, cbToRead, NULL), VINF_SUCCESS);
3671
3672	for (size_t offFlush = 0; offFlush < cbToRead; offFlush += PAGE_SIZE)
3673	if ((size_t volatile )&pbBuf[offFlush + 8] != cbFlush)
3674	{
3675	RTTestIFailed("Flush issue at offset #%zx: %#zx, expected %#zx (cbFlush=%#zx, %#RX64)",
3676	offBuf + offFlush + 8, (size_t volatile )&pbBuf[offFlush + 8],
3677	cbFlush, cbFlush, (uint64_t volatile )&pbBuf[offFlush]);
3678	if (++cErrors > 32)
3679	break;
3680	}
3681	}
3682	RTMemPageFree(pbBuf, cbBuf);
3683	}
3684	}
3685	}
3686
3687	# if 0 /* not needed, very very slow */
3688	/*
3689	* Restore the file to 0xf6 state for the next test.
3690	*/
3691	RTTestIPrintf(RTTESTLVL_ALWAYS, "Restoring content...\n");
3692	fsPerfFillWriteBuf(0, pbMapping, cbMapping, 0xf6);
3693	# ifdef RT_OS_WINDOWS
3694	RTTESTI_CHECK(FlushViewOfFile(pbMapping, cbMapping));
3695	# else
3696	RTTESTI_CHECK(msync(pbMapping, cbMapping, MS_SYNC) == 0);
3697	# endif
3698	RTTestIPrintf(RTTESTLVL_ALWAYS, "... done\n");
3699	# endif
3700	}
3701	}
3702
3703	/*
3704	* Observe how regular writes affects a read-only or readwrite mapping.
3705	* These should ideally be immediately visible in the mapping, at least
3706	* when not performed thru an no-cache handle.
3707	*/
3708	if (enmState == kMMap_ReadOnly \|\| enmState == kMMap_ReadWrite)
3709	{
3710	size_t cbBuf = RT_MIN(_2M, cbMapping / 2);
3711	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(cbBuf);
3712	if (!pbBuf)
3713	{
3714	cbBuf = _4K;
3715	pbBuf = (uint8_t *)RTMemPageAlloc(cbBuf);
3716	}
3717	RTTESTI_CHECK(pbBuf != NULL);
3718	if (pbBuf)
3719	{
3720	/* Do a number of random writes to the file (using hFile1).
3721	Immediately undoing them. */
3722	for (uint32_t i = 0; i < 128; i++)
3723	{
3724	/* Generate a randomly sized write at a random location, making
3725	sure it differs from whatever is there already before writing. */
3726	uint32_t const cbToWrite = RTRandU32Ex(1, (uint32_t)cbBuf);
3727	uint64_t const offToWrite = RTRandU64Ex(0, cbMapping - cbToWrite);
3728
3729	fsPerfFillWriteBuf(offToWrite, pbBuf, cbToWrite, 0xf8);
3730	pbBuf[0] = ~pbBuf[0];
3731	if (cbToWrite > 1)
3732	pbBuf[cbToWrite - 1] = ~pbBuf[cbToWrite - 1];
3733	RTTESTI_CHECK_RC(RTFileWriteAt(hFile1, offToWrite, pbBuf, cbToWrite, NULL), VINF_SUCCESS);
3734
3735	/* Check the mapping. */
3736	if (memcmp(&pbMapping[(size_t)offToWrite], pbBuf, cbToWrite) != 0)
3737	{
3738	RTTestIFailed("Write #%u @ %#RX64 LB %#x was not reflected in the mapping!\n", i, offToWrite, cbToWrite);
3739	}
3740
3741	/* Restore */
3742	fsPerfFillWriteBuf(offToWrite, pbBuf, cbToWrite, 0xf6);
3743	RTTESTI_CHECK_RC(RTFileWriteAt(hFile1, offToWrite, pbBuf, cbToWrite, NULL), VINF_SUCCESS);
3744	}
3745
3746	RTMemPageFree(pbBuf, cbBuf);
3747	}
3748	}
3749
3750	/*
3751	* Unmap it.
3752	*/
3753	# ifdef RT_OS_WINDOWS
3754	RTTESTI_CHECK(UnmapViewOfFile(pbMapping));
3755	RTTESTI_CHECK(CloseHandle(hSection));
3756	# else
3757	RTTESTI_CHECK(munmap(pbMapping, cbMapping) == 0);
3758	# endif
3759	}
3760
3761	/*
3762	* Memory mappings without open handles (pretty common).
3763	*/
3764	for (uint32_t i = 0; i < 32; i++)
3765	{
3766	/* Create a new file, 256 KB in size, and fill it with random bytes.
3767	Try uncached access if we can to force the page-in to do actual reads. */
3768	char szFile2[RTPATH_MAX + 32];
3769	memcpy(szFile2, g_szDir, g_cchDir);
3770	RTStrPrintf(&szFile2[g_cchDir], sizeof(szFile2) - g_cchDir, "mmap-%u.noh", i);
3771	RTFILE hFile2 = NIL_RTFILE;
3772	int rc = (i & 3) == 3 ? VERR_TRY_AGAIN
3773	: RTFileOpen(&hFile2, szFile2, RTFILE_O_READWRITE \| RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_NO_CACHE);
3774	if (RT_FAILURE(rc))
3775	{
3776	RTTESTI_CHECK_RC_BREAK(RTFileOpen(&hFile2, szFile2, RTFILE_O_READWRITE \| RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE),
3777	VINF_SUCCESS);
3778	}
3779
3780	static char s_abContentUnaligned[256*1024 + PAGE_SIZE - 1];
3781	char * const pbContent = &s_abContentUnaligned[PAGE_SIZE - ((uintptr_t)&s_abContentUnaligned[0] & PAGE_OFFSET_MASK)];
3782	size_t const cbContent = 256*1024;
3783	RTRandBytes(pbContent, cbContent);
3784	RTTESTI_CHECK_RC(rc = RTFileWrite(hFile2, pbContent, cbContent, NULL), VINF_SUCCESS);
3785	RTTESTI_CHECK_RC(RTFileClose(hFile2), VINF_SUCCESS);
3786	if (RT_SUCCESS(rc))
3787	{
3788	/* Reopen the file with normal caching. Every second time, we also
3789	does a read-only open of it to confuse matters. */
3790	RTFILE hFile3 = NIL_RTFILE;
3791	if ((i & 3) == 3)
3792	RTTESTI_CHECK_RC(RTFileOpen(&hFile3, szFile2, RTFILE_O_READ \| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE), VINF_SUCCESS);
3793	hFile2 = NIL_RTFILE;
3794	RTTESTI_CHECK_RC_BREAK(RTFileOpen(&hFile2, szFile2, RTFILE_O_READWRITE \| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE),
3795	VINF_SUCCESS);
3796	if ((i & 3) == 1)
3797	RTTESTI_CHECK_RC(RTFileOpen(&hFile3, szFile2, RTFILE_O_READ \| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE), VINF_SUCCESS);
3798
3799	/* Memory map it read-write (no COW). */
3800	#ifdef RT_OS_WINDOWS
3801	HANDLE hSection = CreateFileMapping((HANDLE)RTFileToNative(hFile2), NULL, PAGE_READWRITE, 0, cbContent, NULL);
3802	RTTESTI_CHECK_MSG(hSection != NULL, ("last error %u\n", GetLastError));
3803	uint8_t pbMapping = (uint8_t )MapViewOfFile(hSection, FILE_MAP_WRITE, 0, 0, cbContent);
3804	RTTESTI_CHECK_MSG(pbMapping != NULL, ("last error %u\n", GetLastError));
3805	RTTESTI_CHECK_MSG(CloseHandle(hSection), ("last error %u\n", GetLastError));
3806	# else
3807	uint8_t pbMapping = (uint8_t )mmap(NULL, cbContent, PROT_READ \| PROT_WRITE, MAP_SHARED,
3808	(int)RTFileToNative(hFile2), 0);
3809	if ((void *)pbMapping == MAP_FAILED)
3810	pbMapping = NULL;
3811	RTTESTI_CHECK_MSG(pbMapping != NULL, ("errno=%s (%d)\n", strerror(errno), errno));
3812	# endif
3813
3814	/* Close the file handles. */
3815	if ((i & 7) == 7)
3816	{
3817	RTTESTI_CHECK_RC(RTFileClose(hFile3), VINF_SUCCESS);
3818	hFile3 = NIL_RTFILE;
3819	}
3820	RTTESTI_CHECK_RC(RTFileClose(hFile2), VINF_SUCCESS);
3821	if ((i & 7) == 5)
3822	{
3823	RTTESTI_CHECK_RC(RTFileClose(hFile3), VINF_SUCCESS);
3824	hFile3 = NIL_RTFILE;
3825	}
3826	if (pbMapping)
3827	{
3828	RTThreadSleep(2); /* fudge for cleanup/whatever */
3829
3830	/* Page in the mapping by comparing with the content we wrote above. */
3831	RTTESTI_CHECK(memcmp(pbMapping, pbContent, cbContent) == 0);
3832
3833	/* Now dirty everything by inverting everything. */
3834	size_t puCur = (size_t )pbMapping;
3835	size_t cLeft = cbContent / sizeof(*puCur);
3836	while (cLeft-- > 0)
3837	{
3838	puCur = ~puCur;
3839	puCur++;
3840	}
3841
3842	/* Sync it all. */
3843	# ifdef RT_OS_WINDOWS
3844	RTTESTI_CHECK(FlushViewOfFile(pbMapping, cbContent));
3845	# else
3846	RTTESTI_CHECK(msync(pbMapping, cbContent, MS_SYNC) == 0);
3847	# endif
3848
3849	/* Unmap it. */
3850	# ifdef RT_OS_WINDOWS
3851	RTTESTI_CHECK(UnmapViewOfFile(pbMapping));
3852	# else
3853	RTTESTI_CHECK(munmap(pbMapping, cbContent) == 0);
3854	# endif
3855	}
3856
3857	if (hFile3 != NIL_RTFILE)
3858	RTTESTI_CHECK_RC(RTFileClose(hFile3), VINF_SUCCESS);
3859	}
3860	RTTESTI_CHECK_RC(RTFileDelete(szFile2), VINF_SUCCESS);
3861	}
3862
3863
3864	#else
3865	RTTestSkipped(g_hTest, "not supported/implemented");
3866	RT_NOREF(hFile1, hFileNoCache, cbFile);
3867	#endif
3868	}
3869
3870
3871	/**
3872	* This does the read, write and seek tests.
3873	*/
3874	void fsPerfIo(void)
3875	{
3876	RTTestISub("I/O");
3877
3878	/*
3879	* Determin the size of the test file.
3880	*/
3881	g_szDir[g_cchDir] = '\0';
3882	RTFOFF cbFree = 0;
3883	RTTESTI_CHECK_RC_RETV(RTFsQuerySizes(g_szDir, NULL, &cbFree, NULL, NULL), VINF_SUCCESS);
3884	uint64_t cbFile = g_cbIoFile;
3885	if (cbFile + _16M < (uint64_t)cbFree)
3886	cbFile = RT_ALIGN_64(cbFile, _64K);
3887	else if (cbFree < _32M)
3888	{
3889	RTTestSkipped(g_hTest, "Insufficent free space: %'RU64 bytes, requires >= 32MB", cbFree);
3890	return;
3891	}
3892	else
3893	{
3894	cbFile = cbFree - (cbFree > _128M ? _64M : _16M);
3895	cbFile = RT_ALIGN_64(cbFile, _64K);
3896	RTTestIPrintf(RTTESTLVL_ALWAYS, "Adjusted file size to %'RU64 bytes, due to %'RU64 bytes free.\n", cbFile, cbFree);
3897	}
3898	if (cbFile < _64K)
3899	{
3900	RTTestSkipped(g_hTest, "Specified test file size too small: %'RU64 bytes, requires >= 64KB", cbFile);
3901	return;
3902	}
3903
3904	/*
3905	* Create a cbFile sized test file.
3906	*/
3907	RTFILE hFile1;
3908	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file21")),
3909	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_READWRITE), VINF_SUCCESS);
3910	RTFILE hFileNoCache;
3911	if (!g_fIgnoreNoCache)
3912	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFileNoCache, g_szDir,
3913	RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READWRITE \| RTFILE_O_NO_CACHE),
3914	VINF_SUCCESS);
3915	else
3916	{
3917	int rc = RTFileOpen(&hFileNoCache, g_szDir, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READWRITE \| RTFILE_O_NO_CACHE);
3918	if (RT_FAILURE(rc))
3919	{
3920	RTTestIPrintf(RTTESTLVL_ALWAYS, "Unable to open I/O file with non-cache flag (%Rrc), skipping related tests.\n", rc);
3921	hFileNoCache = NIL_RTFILE;
3922	}
3923	}
3924	RTFILE hFileWriteThru;
3925	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFileWriteThru, g_szDir,
3926	RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READWRITE \| RTFILE_O_WRITE_THROUGH),
3927	VINF_SUCCESS);
3928
3929	uint8_t *pbFree = NULL;
3930	int rc = fsPerfIoPrepFile(hFile1, cbFile, &pbFree);
3931	RTMemFree(pbFree);
3932	if (RT_SUCCESS(rc))
3933	{
3934	/*
3935	* Do the testing & profiling.
3936	*/
3937	if (g_fSeek)
3938	fsPerfIoSeek(hFile1, cbFile);
3939
3940	if (g_fReadTests)
3941	fsPerfRead(hFile1, hFileNoCache, cbFile);
3942	if (g_fReadPerf)
3943	for (unsigned i = 0; i < g_cIoBlocks; i++)
3944	fsPerfIoReadBlockSize(hFile1, cbFile, g_acbIoBlocks[i]);
3945	#ifdef FSPERF_TEST_SENDFILE
3946	if (g_fSendFile)
3947	fsPerfSendFile(hFile1, cbFile);
3948	#endif
3949	#ifdef RT_OS_LINUX
3950	if (g_fSplice)
3951	fsPerfSpliceToPipe(hFile1, cbFile);
3952	#endif
3953	if (g_fMMap)
3954	fsPerfMMap(hFile1, hFileNoCache, cbFile);
3955
3956	/* This is destructive to the file content. */
3957	if (g_fWriteTests)
3958	fsPerfWrite(hFile1, hFileNoCache, hFileWriteThru, cbFile);
3959	if (g_fWritePerf)
3960	for (unsigned i = 0; i < g_cIoBlocks; i++)
3961	fsPerfIoWriteBlockSize(hFile1, cbFile, g_acbIoBlocks[i]);
3962	#ifdef RT_OS_LINUX
3963	if (g_fSplice)
3964	fsPerfSpliceToFile(hFile1, cbFile);
3965	#endif
3966	if (g_fFSync)
3967	fsPerfFSync(hFile1, cbFile);
3968	}
3969
3970	RTTESTI_CHECK_RC(RTFileSetSize(hFile1, 0), VINF_SUCCESS);
3971	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
3972	if (hFileNoCache != NIL_RTFILE \|\| !g_fIgnoreNoCache)
3973	RTTESTI_CHECK_RC(RTFileClose(hFileNoCache), VINF_SUCCESS);
3974	RTTESTI_CHECK_RC(RTFileClose(hFileWriteThru), VINF_SUCCESS);
3975	RTTESTI_CHECK_RC(RTFileDelete(g_szDir), VINF_SUCCESS);
3976	}
3977
3978
3979	DECL_FORCE_INLINE(int) fsPerfCopyWorker1(const char pszSrc, const char pszDst)
3980	{
3981	RTFileDelete(pszDst);
3982	return RTFileCopy(pszSrc, pszDst);
3983	}
3984
3985
3986	#ifdef RT_OS_LINUX
3987	DECL_FORCE_INLINE(int) fsPerfCopyWorkerSendFile(RTFILE hFile1, RTFILE hFile2, size_t cbFile)
3988	{
3989	RTTESTI_CHECK_RC_RET(RTFileSeek(hFile2, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS, rcCheck);
3990
3991	loff_t off = 0;
3992	ssize_t cbSent = sendfile((int)RTFileToNative(hFile2), (int)RTFileToNative(hFile1), &off, cbFile);
3993	if (cbSent > 0 && (size_t)cbSent == cbFile)
3994	return 0;
3995
3996	int rc = VERR_GENERAL_FAILURE;
3997	if (cbSent < 0)
3998	{
3999	rc = RTErrConvertFromErrno(errno);
4000	RTTestIFailed("sendfile(file,file,NULL,%#zx) failed (%zd): %d (%Rrc)", cbFile, cbSent, errno, rc);
4001	}
4002	else
4003	RTTestIFailed("sendfile(file,file,NULL,%#zx) returned %#zx, expected %#zx (diff %zd)",
4004	cbFile, cbSent, cbFile, cbSent - cbFile);
4005	return rc;
4006	}
4007	#endif /* RT_OS_LINUX */
4008
4009
4010	static void fsPerfCopy(void)
4011	{
4012	RTTestISub("copy");
4013
4014	/*
4015	* Non-existing files.
4016	*/
4017	RTTESTI_CHECK_RC(RTFileCopy(InEmptyDir(RT_STR_TUPLE("no-such-file")),
4018	InDir2(RT_STR_TUPLE("whatever"))), VERR_FILE_NOT_FOUND);
4019	RTTESTI_CHECK_RC(RTFileCopy(InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file")),
4020	InDir2(RT_STR_TUPLE("no-such-file"))), FSPERF_VERR_PATH_NOT_FOUND);
4021	RTTESTI_CHECK_RC(RTFileCopy(InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file")),
4022	InDir2(RT_STR_TUPLE("whatever"))), VERR_PATH_NOT_FOUND);
4023
4024	RTTESTI_CHECK_RC(RTFileCopy(InDir(RT_STR_TUPLE("known-file")),
4025	InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file"))), FSPERF_VERR_PATH_NOT_FOUND);
4026	RTTESTI_CHECK_RC(RTFileCopy(InDir(RT_STR_TUPLE("known-file")),
4027	InDir2(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file"))), VERR_PATH_NOT_FOUND);
4028
4029	/*
4030	* Determin the size of the test file.
4031	* We want to be able to make 1 copy of it.
4032	*/
4033	g_szDir[g_cchDir] = '\0';
4034	RTFOFF cbFree = 0;
4035	RTTESTI_CHECK_RC_RETV(RTFsQuerySizes(g_szDir, NULL, &cbFree, NULL, NULL), VINF_SUCCESS);
4036	uint64_t cbFile = g_cbIoFile;
4037	if (cbFile + _16M < (uint64_t)cbFree)
4038	cbFile = RT_ALIGN_64(cbFile, _64K);
4039	else if (cbFree < _32M)
4040	{
4041	RTTestSkipped(g_hTest, "Insufficent free space: %'RU64 bytes, requires >= 32MB", cbFree);
4042	return;
4043	}
4044	else
4045	{
4046	cbFile = cbFree - (cbFree > _128M ? _64M : _16M);
4047	cbFile = RT_ALIGN_64(cbFile, _64K);
4048	RTTestIPrintf(RTTESTLVL_ALWAYS, "Adjusted file size to %'RU64 bytes, due to %'RU64 bytes free.\n", cbFile, cbFree);
4049	}
4050	if (cbFile < _512K * 2)
4051	{
4052	RTTestSkipped(g_hTest, "Specified test file size too small: %'RU64 bytes, requires >= 1MB", cbFile);
4053	return;
4054	}
4055	cbFile /= 2;
4056
4057	/*
4058	* Create a cbFile sized test file.
4059	*/
4060	RTFILE hFile1;
4061	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file22")),
4062	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_READWRITE), VINF_SUCCESS);
4063	uint8_t *pbFree = NULL;
4064	int rc = fsPerfIoPrepFile(hFile1, cbFile, &pbFree);
4065	RTMemFree(pbFree);
4066	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
4067	if (RT_SUCCESS(rc))
4068	{
4069	/*
4070	* Make copies.
4071	*/
4072	/* plain */
4073	RTFileDelete(InDir2(RT_STR_TUPLE("file23")));
4074	RTTESTI_CHECK_RC(RTFileCopy(g_szDir, g_szDir2), VINF_SUCCESS);
4075	RTTESTI_CHECK_RC(RTFileCopy(g_szDir, g_szDir2), VERR_ALREADY_EXISTS);
4076	RTTESTI_CHECK_RC(RTFileCompare(g_szDir, g_szDir2), VINF_SUCCESS);
4077
4078	/* by handle */
4079	hFile1 = NIL_RTFILE;
4080	RTTESTI_CHECK_RC(RTFileOpen(&hFile1, g_szDir, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), VINF_SUCCESS);
4081	RTFILE hFile2 = NIL_RTFILE;
4082	RTTESTI_CHECK_RC(RTFileOpen(&hFile2, g_szDir2, RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
4083	RTTESTI_CHECK_RC(RTFileCopyByHandles(hFile1, hFile2), VINF_SUCCESS);
4084	RTTESTI_CHECK_RC(RTFileClose(hFile2), VINF_SUCCESS);
4085	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
4086	RTTESTI_CHECK_RC(RTFileCompare(g_szDir, g_szDir2), VINF_SUCCESS);
4087
4088	/* copy part */
4089	hFile1 = NIL_RTFILE;
4090	RTTESTI_CHECK_RC(RTFileOpen(&hFile1, g_szDir, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), VINF_SUCCESS);
4091	hFile2 = NIL_RTFILE;
4092	RTTESTI_CHECK_RC(RTFileOpen(&hFile2, g_szDir2, RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
4093	RTTESTI_CHECK_RC(RTFileCopyPart(hFile1, 0, hFile2, 0, cbFile / 2, 0, NULL), VINF_SUCCESS);
4094	RTTESTI_CHECK_RC(RTFileCopyPart(hFile1, cbFile / 2, hFile2, cbFile / 2, cbFile - cbFile / 2, 0, NULL), VINF_SUCCESS);
4095	RTTESTI_CHECK_RC(RTFileClose(hFile2), VINF_SUCCESS);
4096	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
4097	RTTESTI_CHECK_RC(RTFileCompare(g_szDir, g_szDir2), VINF_SUCCESS);
4098
4099	#ifdef RT_OS_LINUX
4100	/*
4101	* On linux we can also use sendfile between two files, except for 2.5.x to 2.6.33.
4102	*/
4103	uint64_t const cbFileMax = RT_MIN(cbFile, UINT32_C(0x7ffff000));
4104	char szRelease[64];
4105	RTSystemQueryOSInfo(RTSYSOSINFO_RELEASE, szRelease, sizeof(szRelease));
4106	bool const fSendFileBetweenFiles = RTStrVersionCompare(szRelease, "2.5.0") < 0
4107	\|\| RTStrVersionCompare(szRelease, "2.6.33") >= 0;
4108	if (fSendFileBetweenFiles)
4109	{
4110	/* Copy the whole file: */
4111	hFile1 = NIL_RTFILE;
4112	RTTESTI_CHECK_RC(RTFileOpen(&hFile1, g_szDir, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), VINF_SUCCESS);
4113	RTFileDelete(g_szDir2);
4114	hFile2 = NIL_RTFILE;
4115	RTTESTI_CHECK_RC(RTFileOpen(&hFile2, g_szDir2, RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
4116	ssize_t cbSent = sendfile((int)RTFileToNative(hFile2), (int)RTFileToNative(hFile1), NULL, cbFile);
4117	if (cbSent < 0)
4118	RTTestIFailed("sendfile(file,file,NULL,%#zx) failed (%zd): %d (%Rrc)",
4119	cbFile, cbSent, errno, RTErrConvertFromErrno(errno));
4120	else if ((size_t)cbSent != cbFileMax)
4121	RTTestIFailed("sendfile(file,file,NULL,%#zx) returned %#zx, expected %#zx (diff %zd)",
4122	cbFile, cbSent, cbFileMax, cbSent - cbFileMax);
4123	RTTESTI_CHECK_RC(RTFileClose(hFile2), VINF_SUCCESS);
4124	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
4125	RTTESTI_CHECK_RC(RTFileCompare(g_szDir, g_szDir2), VINF_SUCCESS);
4126
4127	/* Try copy a little bit too much: */
4128	if (cbFile == cbFileMax)
4129	{
4130	hFile1 = NIL_RTFILE;
4131	RTTESTI_CHECK_RC(RTFileOpen(&hFile1, g_szDir, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), VINF_SUCCESS);
4132	RTFileDelete(g_szDir2);
4133	hFile2 = NIL_RTFILE;
4134	RTTESTI_CHECK_RC(RTFileOpen(&hFile2, g_szDir2, RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
4135	size_t cbToCopy = cbFile + RTRandU32Ex(1, _64M);
4136	cbSent = sendfile((int)RTFileToNative(hFile2), (int)RTFileToNative(hFile1), NULL, cbToCopy);
4137	if (cbSent < 0)
4138	RTTestIFailed("sendfile(file,file,NULL,%#zx) failed (%zd): %d (%Rrc)",
4139	cbToCopy, cbSent, errno, RTErrConvertFromErrno(errno));
4140	else if ((size_t)cbSent != cbFile)
4141	RTTestIFailed("sendfile(file,file,NULL,%#zx) returned %#zx, expected %#zx (diff %zd)",
4142	cbToCopy, cbSent, cbFile, cbSent - cbFile);
4143	RTTESTI_CHECK_RC(RTFileClose(hFile2), VINF_SUCCESS);
4144	RTTESTI_CHECK_RC(RTFileCompare(g_szDir, g_szDir2), VINF_SUCCESS);
4145	}
4146
4147	/* Do partial copy: */
4148	hFile2 = NIL_RTFILE;
4149	RTTESTI_CHECK_RC(RTFileOpen(&hFile2, g_szDir2, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
4150	for (uint32_t i = 0; i < 64; i++)
4151	{
4152	size_t cbToCopy = RTRandU32Ex(0, cbFileMax - 1);
4153	uint32_t const offFile = RTRandU32Ex(1, (uint64_t)RT_MIN(cbFileMax - cbToCopy, UINT32_MAX));
4154	RTTESTI_CHECK_RC_BREAK(RTFileSeek(hFile2, offFile, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
4155	loff_t offFile2 = offFile;
4156	cbSent = sendfile((int)RTFileToNative(hFile2), (int)RTFileToNative(hFile1), &offFile2, cbToCopy);
4157	if (cbSent < 0)
4158	RTTestIFailed("sendfile(file,file,%#x,%#zx) failed (%zd): %d (%Rrc)",
4159	offFile, cbToCopy, cbSent, errno, RTErrConvertFromErrno(errno));
4160	else if ((size_t)cbSent != cbToCopy)
4161	RTTestIFailed("sendfile(file,file,%#x,%#zx) returned %#zx, expected %#zx (diff %zd)",
4162	offFile, cbToCopy, cbSent, cbToCopy, cbSent - cbToCopy);
4163	else if (offFile2 != (loff_t)(offFile + cbToCopy))
4164	RTTestIFailed("sendfile(file,file,%#x,%#zx) returned %#zx + off=%#RX64, expected off %#x",
4165	offFile, cbToCopy, cbSent, offFile2, offFile + cbToCopy);
4166	}
4167	RTTESTI_CHECK_RC(RTFileClose(hFile2), VINF_SUCCESS);
4168	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
4169	RTTESTI_CHECK_RC(RTFileCompare(g_szDir, g_szDir2), VINF_SUCCESS);
4170	}
4171	#endif
4172
4173	/*
4174	* Do some benchmarking.
4175	*/
4176	#define PROFILE_COPY_FN(a_szOperation, a_fnCall) \
4177	do \
4178	{ \
4179	/* Estimate how many iterations we need to fill up the given timeslot: */ \
4180	fsPerfYield(); \
4181	uint64_t nsStart = RTTimeNanoTS(); \
4182	uint64_t ns; \
4183	do \
4184	ns = RTTimeNanoTS(); \
4185	while (ns == nsStart); \
4186	nsStart = ns; \
4187	\
4188	uint64_t iIteration = 0; \
4189	do \
4190	{ \
4191	RTTESTI_CHECK_RC(a_fnCall, VINF_SUCCESS); \
4192	iIteration++; \
4193	ns = RTTimeNanoTS() - nsStart; \
4194	} while (ns < RT_NS_10MS); \
4195	ns /= iIteration; \
4196	if (ns > g_nsPerNanoTSCall + 32) \
4197	ns -= g_nsPerNanoTSCall; \
4198	uint64_t cIterations = g_nsTestRun / ns; \
4199	if (cIterations < 2) \
4200	cIterations = 2; \
4201	else if (cIterations & 1) \
4202	cIterations++; \
4203	\
4204	/* Do the actual profiling: */ \
4205	iIteration = 0; \
4206	fsPerfYield(); \
4207	nsStart = RTTimeNanoTS(); \
4208	for (uint32_t iAdjust = 0; iAdjust < 4; iAdjust++) \
4209	{ \
4210	for (; iIteration < cIterations; iIteration++)\
4211	RTTESTI_CHECK_RC(a_fnCall, VINF_SUCCESS); \
4212	ns = RTTimeNanoTS() - nsStart;\
4213	if (ns >= g_nsTestRun - (g_nsTestRun / 10)) \
4214	break; \
4215	cIterations += cIterations / 4; \
4216	if (cIterations & 1) \
4217	cIterations++; \
4218	nsStart += g_nsPerNanoTSCall; \
4219	} \
4220	RTTestIValueF(ns / iIteration, \
4221	RTTESTUNIT_NS_PER_OCCURRENCE, a_szOperation " latency"); \
4222	RTTestIValueF((uint64_t)((uint64_t)iIteration * cbFile / ((double)ns / RT_NS_1SEC)), \
4223	RTTESTUNIT_BYTES_PER_SEC, a_szOperation " throughput"); \
4224	RTTestIValueF((uint64_t)iIteration * cbFile, \
4225	RTTESTUNIT_BYTES, a_szOperation " bytes"); \
4226	RTTestIValueF(iIteration, \
4227	RTTESTUNIT_OCCURRENCES, a_szOperation " iterations"); \
4228	if (g_fShowDuration) \
4229	RTTestIValueF(ns, RTTESTUNIT_NS, a_szOperation " duration"); \
4230	} while (0)
4231
4232	PROFILE_COPY_FN("RTFileCopy/Replace", fsPerfCopyWorker1(g_szDir, g_szDir2));
4233
4234	hFile1 = NIL_RTFILE;
4235	RTTESTI_CHECK_RC(RTFileOpen(&hFile1, g_szDir, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), VINF_SUCCESS);
4236	RTFileDelete(g_szDir2);
4237	hFile2 = NIL_RTFILE;
4238	RTTESTI_CHECK_RC(RTFileOpen(&hFile2, g_szDir2, RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
4239	PROFILE_COPY_FN("RTFileCopyByHandles/Overwrite", RTFileCopyByHandles(hFile1, hFile2));
4240	RTTESTI_CHECK_RC(RTFileClose(hFile2), VINF_SUCCESS);
4241	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
4242
4243	/* We could benchmark RTFileCopyPart with various block sizes and whatnot...
4244	But it's currently well covered by the two previous operations. */
4245
4246	#ifdef RT_OS_LINUX
4247	if (fSendFileBetweenFiles)
4248	{
4249	hFile1 = NIL_RTFILE;
4250	RTTESTI_CHECK_RC(RTFileOpen(&hFile1, g_szDir, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), VINF_SUCCESS);
4251	RTFileDelete(g_szDir2);
4252	hFile2 = NIL_RTFILE;
4253	RTTESTI_CHECK_RC(RTFileOpen(&hFile2, g_szDir2, RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
4254	PROFILE_COPY_FN("sendfile/overwrite", fsPerfCopyWorkerSendFile(hFile1, hFile2, cbFileMax));
4255	RTTESTI_CHECK_RC(RTFileClose(hFile2), VINF_SUCCESS);
4256	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
4257	}
4258	#endif
4259	}
4260
4261	/*
4262	* Clean up.
4263	*/
4264	RTFileDelete(InDir2(RT_STR_TUPLE("file22c1")));
4265	RTFileDelete(InDir2(RT_STR_TUPLE("file22c2")));
4266	RTFileDelete(InDir2(RT_STR_TUPLE("file22c3")));
4267	RTTESTI_CHECK_RC(RTFileDelete(g_szDir), VINF_SUCCESS);
4268	}
4269
4270
4271	/**
4272	* Display the usage to @a pStrm.
4273	*/
4274	static void Usage(PRTSTREAM pStrm)
4275	{
4276	char szExec[RTPATH_MAX];
4277	RTStrmPrintf(pStrm, "usage: %s <-d <testdir>> [options]\n",
4278	RTPathFilename(RTProcGetExecutablePath(szExec, sizeof(szExec))));
4279	RTStrmPrintf(pStrm, "\n");
4280	RTStrmPrintf(pStrm, "options: \n");
4281
4282	for (unsigned i = 0; i < RT_ELEMENTS(g_aCmdOptions); i++)
4283	{
4284	char szHelp[80];
4285	const char *pszHelp;
4286	switch (g_aCmdOptions[i].iShort)
4287	{
4288	case 'd': pszHelp = "The directory to use for testing. default: CWD/fstestdir"; break;
4289	case 'e': pszHelp = "Enables all tests. default: -e"; break;
4290	case 'z': pszHelp = "Disables all tests. default: -e"; break;
4291	case 's': pszHelp = "Set benchmark duration in seconds. default: 10 sec"; break;
4292	case 'm': pszHelp = "Set benchmark duration in milliseconds. default: 10000 ms"; break;
4293	case 'v': pszHelp = "More verbose execution."; break;
4294	case 'q': pszHelp = "Quiet execution."; break;
4295	case 'h': pszHelp = "Displays this help and exit"; break;
4296	case 'V': pszHelp = "Displays the program revision"; break;
4297	case kCmdOpt_ShowDuration: pszHelp = "Show duration of profile runs. default: --no-show-duration"; break;
4298	case kCmdOpt_NoShowDuration: pszHelp = "Hide duration of profile runs. default: --no-show-duration"; break;
4299	case kCmdOpt_ShowIterations: pszHelp = "Show iteration count for profile runs. default: --no-show-iterations"; break;
4300	case kCmdOpt_NoShowIterations: pszHelp = "Hide iteration count for profile runs. default: --no-show-iterations"; break;
4301	case kCmdOpt_ManyFiles: pszHelp = "Count of files in big test dir. default: --many-files 10000"; break;
4302	case kCmdOpt_NoManyFiles: pszHelp = "Skip big test dir with many files. default: --many-files 10000"; break;
4303	case kCmdOpt_ManyTreeFilesPerDir: pszHelp = "Count of files per directory in test tree. default: 640"; break;
4304	case kCmdOpt_ManyTreeSubdirsPerDir: pszHelp = "Count of subdirs per directory in test tree. default: 16"; break;
4305	case kCmdOpt_ManyTreeDepth: pszHelp = "Depth of test tree (not counting root). default: 1"; break;
4306	case kCmdOpt_IgnoreNoCache: pszHelp = "Ignore error wrt no-cache handle. default: --no-ignore-no-cache"; break;
4307	case kCmdOpt_NoIgnoreNoCache: pszHelp = "Do not ignore error wrt no-cache handle. default: --no-ignore-no-cache"; break;
4308	case kCmdOpt_IoFileSize: pszHelp = "Size of file used for I/O tests. default: 512 MB"; break;
4309	case kCmdOpt_SetBlockSize: pszHelp = "Sets single I/O block size (in bytes)."; break;
4310	case kCmdOpt_AddBlockSize: pszHelp = "Adds an I/O block size (in bytes)."; break;
4311	default:
4312	if (g_aCmdOptions[i].iShort >= kCmdOpt_First)
4313	{
4314	if (RTStrStartsWith(g_aCmdOptions[i].pszLong, "--no-"))
4315	RTStrPrintf(szHelp, sizeof(szHelp), "Disables the '%s' test.", g_aCmdOptions[i].pszLong + 5);
4316	else
4317	RTStrPrintf(szHelp, sizeof(szHelp), "Enables the '%s' test.", g_aCmdOptions[i].pszLong + 2);
4318	pszHelp = szHelp;
4319	}
4320	else
4321	pszHelp = "Option undocumented";
4322	break;
4323	}
4324	if ((unsigned)g_aCmdOptions[i].iShort < 127U)
4325	{
4326	char szOpt[64];
4327	RTStrPrintf(szOpt, sizeof(szOpt), "%s, -%c", g_aCmdOptions[i].pszLong, g_aCmdOptions[i].iShort);
4328	RTStrmPrintf(pStrm, " %-19s %s\n", szOpt, pszHelp);
4329	}
4330	else
4331	RTStrmPrintf(pStrm, " %-19s %s\n", g_aCmdOptions[i].pszLong, pszHelp);
4332	}
4333	}
4334
4335
4336	static uint32_t fsPerfCalcManyTreeFiles(void)
4337	{
4338	uint32_t cDirs = 1;
4339	for (uint32_t i = 0, cDirsAtLevel = 1; i < g_cManyTreeDepth; i++)
4340	{
4341	cDirs += cDirsAtLevel * g_cManyTreeSubdirsPerDir;
4342	cDirsAtLevel *= g_cManyTreeSubdirsPerDir;
4343	}
4344	return g_cManyTreeFilesPerDir * cDirs;
4345	}
4346
4347
4348	int main(int argc, char *argv[])
4349	{
4350	/*
4351	* Init IPRT and globals.
4352	*/
4353	int rc = RTTestInitAndCreate("FsPerf", &g_hTest);
4354	if (rc)
4355	return rc;
4356	RTListInit(&g_ManyTreeHead);
4357
4358	/*
4359	* Default values.
4360	*/
4361	rc = RTPathGetCurrent(g_szDir, sizeof(g_szDir) / 2);
4362	if (RT_SUCCESS(rc))
4363	rc = RTPathAppend(g_szDir, sizeof(g_szDir) / 2, "fstestdir-");
4364	if (RT_SUCCESS(rc))
4365	{
4366	g_cchDir = strlen(g_szDir);
4367	g_cchDir += RTStrPrintf(&g_szDir[g_cchDir], sizeof(g_szDir) - g_cchDir, "%u" RTPATH_SLASH_STR, RTProcSelf());
4368	}
4369	else
4370	{
4371	RTTestFailed(g_hTest, "RTPathGetCurrent (or RTPathAppend) failed: %Rrc\n", rc);
4372	return RTTestSummaryAndDestroy(g_hTest);
4373	}
4374
4375	RTGETOPTUNION ValueUnion;
4376	RTGETOPTSTATE GetState;
4377	RTGetOptInit(&GetState, argc, argv, g_aCmdOptions, RT_ELEMENTS(g_aCmdOptions), 1, 0 /* fFlags */);
4378	while ((rc = RTGetOpt(&GetState, &ValueUnion)) != 0)
4379	{
4380	switch (rc)
4381	{
4382	case 'd':
4383	rc = RTPathAbs(ValueUnion.psz, g_szDir, sizeof(g_szDir) / 2);
4384	if (RT_SUCCESS(rc))
4385	{
4386	RTPathEnsureTrailingSeparator(g_szDir, sizeof(g_szDir));
4387	g_cchDir = strlen(g_szDir);
4388	break;
4389	}
4390	RTTestFailed(g_hTest, "RTPathAbs(%s) failed: %Rrc\n", ValueUnion.psz, rc);
4391	return RTTestSummaryAndDestroy(g_hTest);
4392
4393	case 's':
4394	if (ValueUnion.u32 == 0)
4395	g_nsTestRun = RT_NS_1SEC_64 * 10;
4396	else
4397	g_nsTestRun = ValueUnion.u32 * RT_NS_1SEC_64;
4398	break;
4399
4400	case 'm':
4401	if (ValueUnion.u64 == 0)
4402	g_nsTestRun = RT_NS_1SEC_64 * 10;
4403	else
4404	g_nsTestRun = ValueUnion.u64 * RT_NS_1MS;
4405	break;
4406
4407	case 'e':
4408	g_fManyFiles = true;
4409	g_fOpen = true;
4410	g_fFStat = true;
4411	g_fFChMod = true;
4412	g_fFUtimes = true;
4413	g_fStat = true;
4414	g_fChMod = true;
4415	g_fUtimes = true;
4416	g_fRename = true;
4417	g_fDirOpen = true;
4418	g_fDirEnum = true;
4419	g_fMkRmDir = true;
4420	g_fStatVfs = true;
4421	g_fRm = true;
4422	g_fChSize = true;
4423	g_fReadTests = true;
4424	g_fReadPerf = true;
4425	#ifdef FSPERF_TEST_SENDFILE
4426	g_fSendFile = true;
4427	#endif
4428	#ifdef RT_OS_LINUX
4429	g_fSplice = true;
4430	#endif
4431	g_fWriteTests= true;
4432	g_fWritePerf = true;
4433	g_fSeek = true;
4434	g_fFSync = true;
4435	g_fMMap = true;
4436	g_fCopy = true;
4437	break;
4438
4439	case 'z':
4440	g_fManyFiles = false;
4441	g_fOpen = false;
4442	g_fFStat = false;
4443	g_fFChMod = false;
4444	g_fFUtimes = false;
4445	g_fStat = false;
4446	g_fChMod = false;
4447	g_fUtimes = false;
4448	g_fRename = false;
4449	g_fDirOpen = false;
4450	g_fDirEnum = false;
4451	g_fMkRmDir = false;
4452	g_fStatVfs = false;
4453	g_fRm = false;
4454	g_fChSize = false;
4455	g_fReadTests = false;
4456	g_fReadPerf = false;
4457	#ifdef FSPERF_TEST_SENDFILE
4458	g_fSendFile = false;
4459	#endif
4460	#ifdef RT_OS_LINUX
4461	g_fSplice = false;
4462	#endif
4463	g_fWriteTests= false;
4464	g_fWritePerf = false;
4465	g_fSeek = false;
4466	g_fFSync = false;
4467	g_fMMap = false;
4468	g_fCopy = false;
4469	break;
4470
4471	#define CASE_OPT(a_Stem) \
4472	case RT_CONCAT(kCmdOpt_,a_Stem): RT_CONCAT(g_f,a_Stem) = true; break; \
4473	case RT_CONCAT(kCmdOpt_No,a_Stem): RT_CONCAT(g_f,a_Stem) = false; break
4474	CASE_OPT(Open);
4475	CASE_OPT(FStat);
4476	CASE_OPT(FChMod);
4477	CASE_OPT(FUtimes);
4478	CASE_OPT(Stat);
4479	CASE_OPT(ChMod);
4480	CASE_OPT(Utimes);
4481	CASE_OPT(Rename);
4482	CASE_OPT(DirOpen);
4483	CASE_OPT(DirEnum);
4484	CASE_OPT(MkRmDir);
4485	CASE_OPT(StatVfs);
4486	CASE_OPT(Rm);
4487	CASE_OPT(ChSize);
4488	CASE_OPT(ReadTests);
4489	CASE_OPT(ReadPerf);
4490	#ifdef FSPERF_TEST_SENDFILE
4491	CASE_OPT(SendFile);
4492	#endif
4493	#ifdef RT_OS_LINUX
4494	CASE_OPT(Splice);
4495	#endif
4496	CASE_OPT(WriteTests);
4497	CASE_OPT(WritePerf);
4498	CASE_OPT(Seek);
4499	CASE_OPT(FSync);
4500	CASE_OPT(MMap);
4501	CASE_OPT(IgnoreNoCache);
4502	CASE_OPT(Copy);
4503
4504	CASE_OPT(ShowDuration);
4505	CASE_OPT(ShowIterations);
4506	#undef CASE_OPT
4507
4508	case kCmdOpt_ManyFiles:
4509	g_fManyFiles = ValueUnion.u32 > 0;
4510	g_cManyFiles = ValueUnion.u32;
4511	break;
4512
4513	case kCmdOpt_NoManyFiles:
4514	g_fManyFiles = false;
4515	break;
4516
4517	case kCmdOpt_ManyTreeFilesPerDir:
4518	if (ValueUnion.u32 > 0 && ValueUnion.u32 <= _64M)
4519	{
4520	g_cManyTreeFilesPerDir = ValueUnion.u32;
4521	g_cManyTreeFiles = fsPerfCalcManyTreeFiles();
4522	break;
4523	}
4524	RTTestFailed(g_hTest, "Out of range --files-per-dir value: %u (%#x)\n", ValueUnion.u32, ValueUnion.u32);
4525	return RTTestSummaryAndDestroy(g_hTest);
4526
4527	case kCmdOpt_ManyTreeSubdirsPerDir:
4528	if (ValueUnion.u32 > 0 && ValueUnion.u32 <= 1024)
4529	{
4530	g_cManyTreeSubdirsPerDir = ValueUnion.u32;
4531	g_cManyTreeFiles = fsPerfCalcManyTreeFiles();
4532	break;
4533	}
4534	RTTestFailed(g_hTest, "Out of range --subdirs-per-dir value: %u (%#x)\n", ValueUnion.u32, ValueUnion.u32);
4535	return RTTestSummaryAndDestroy(g_hTest);
4536
4537	case kCmdOpt_ManyTreeDepth:
4538	if (ValueUnion.u32 <= 8)
4539	{
4540	g_cManyTreeDepth = ValueUnion.u32;
4541	g_cManyTreeFiles = fsPerfCalcManyTreeFiles();
4542	break;
4543	}
4544	RTTestFailed(g_hTest, "Out of range --tree-depth value: %u (%#x)\n", ValueUnion.u32, ValueUnion.u32);
4545	return RTTestSummaryAndDestroy(g_hTest);
4546
4547	case kCmdOpt_IoFileSize:
4548	if (ValueUnion.u64 == 0)
4549	g_cbIoFile = _512M;
4550	else
4551	g_cbIoFile = ValueUnion.u64;
4552	break;
4553
4554	case kCmdOpt_SetBlockSize:
4555	if (ValueUnion.u32 > 0)
4556	{
4557	g_cIoBlocks = 1;
4558	g_acbIoBlocks[0] = ValueUnion.u32;
4559	}
4560	else
4561	{
4562	RTTestFailed(g_hTest, "Invalid I/O block size: %u (%#x)\n", ValueUnion.u32, ValueUnion.u32);
4563	return RTTestSummaryAndDestroy(g_hTest);
4564	}
4565	break;
4566
4567	case kCmdOpt_AddBlockSize:
4568	if (g_cIoBlocks >= RT_ELEMENTS(g_acbIoBlocks))
4569	RTTestFailed(g_hTest, "Too many I/O block sizes: max %u\n", RT_ELEMENTS(g_acbIoBlocks));
4570	else if (ValueUnion.u32 == 0)
4571	RTTestFailed(g_hTest, "Invalid I/O block size: %u (%#x)\n", ValueUnion.u32, ValueUnion.u32);
4572	else
4573	{
4574	g_acbIoBlocks[g_cIoBlocks++] = ValueUnion.u32;
4575	break;
4576	}
4577	return RTTestSummaryAndDestroy(g_hTest);
4578
4579	case 'q':
4580	g_uVerbosity = 0;
4581	break;
4582
4583	case 'v':
4584	g_uVerbosity++;
4585	break;
4586
4587	case 'h':
4588	Usage(g_pStdOut);
4589	return RTEXITCODE_SUCCESS;
4590
4591	case 'V':
4592	{
4593	char szRev[] = "$Revision: 77968 $";
4594	szRev[RT_ELEMENTS(szRev) - 2] = '\0';
4595	RTPrintf(RTStrStrip(strchr(szRev, ':') + 1));
4596	return RTEXITCODE_SUCCESS;
4597	}
4598
4599	default:
4600	return RTGetOptPrintError(rc, &ValueUnion);
4601	}
4602	}
4603
4604	/*
4605	* Create the test directory with an 'empty' subdirectory under it,
4606	* execute the tests, and remove directory when done.
4607	*/
4608	RTTestBanner(g_hTest);
4609	if (!RTPathExists(g_szDir))
4610	{
4611	/* The base dir: */
4612	rc = RTDirCreate(g_szDir, 0755,
4613	RTDIRCREATE_FLAGS_NOT_CONTENT_INDEXED_DONT_SET \| RTDIRCREATE_FLAGS_NOT_CONTENT_INDEXED_NOT_CRITICAL);
4614	if (RT_SUCCESS(rc))
4615	{
4616	RTTestIPrintf(RTTESTLVL_ALWAYS, "Test dir: %s\n", g_szDir);
4617	rc = fsPrepTestArea();
4618	if (RT_SUCCESS(rc))
4619	{
4620	/* Profile RTTimeNanoTS(). */
4621	fsPerfNanoTS();
4622
4623	/* Do tests: */
4624	if (g_fManyFiles)
4625	fsPerfManyFiles();
4626	if (g_fOpen)
4627	fsPerfOpen();
4628	if (g_fFStat)
4629	fsPerfFStat();
4630	if (g_fFChMod)
4631	fsPerfFChMod();
4632	if (g_fFUtimes)
4633	fsPerfFUtimes();
4634	if (g_fStat)
4635	fsPerfStat();
4636	if (g_fChMod)
4637	fsPerfChmod();
4638	if (g_fUtimes)
4639	fsPerfUtimes();
4640	if (g_fRename)
4641	fsPerfRename();
4642	if (g_fDirOpen)
4643	vsPerfDirOpen();
4644	if (g_fDirEnum)
4645	vsPerfDirEnum();
4646	if (g_fMkRmDir)
4647	fsPerfMkRmDir();
4648	if (g_fStatVfs)
4649	fsPerfStatVfs();
4650	if (g_fRm \|\| g_fManyFiles)
4651	fsPerfRm(); /* deletes manyfiles and manytree */
4652	if (g_fChSize)
4653	fsPerfChSize();
4654	if ( g_fReadPerf \|\| g_fReadTests \|\| g_fWritePerf \|\| g_fWriteTests
4655	#ifdef FSPERF_TEST_SENDFILE
4656	\|\| g_fSendFile
4657	#endif
4658	#ifdef RT_OS_LINUX
4659	\|\| g_fSplice
4660	#endif
4661	\|\| g_fSeek \|\| g_fFSync \|\| g_fMMap)
4662	fsPerfIo();
4663	if (g_fCopy)
4664	fsPerfCopy();
4665	}
4666
4667	/* Cleanup: */
4668	g_szDir[g_cchDir] = '\0';
4669	rc = RTDirRemoveRecursive(g_szDir, RTDIRRMREC_F_CONTENT_AND_DIR);
4670	if (RT_FAILURE(rc))
4671	RTTestFailed(g_hTest, "RTDirRemoveRecursive(%s,) -> %Rrc\n", g_szDir, rc);
4672	}
4673	else
4674	RTTestFailed(g_hTest, "RTDirCreate(%s) -> %Rrc\n", g_szDir, rc);
4675	}
4676	else
4677	RTTestFailed(g_hTest, "Test directory already exists: %s\n", g_szDir);
4678
4679	return RTTestSummaryAndDestroy(g_hTest);
4680	}
4681

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source: vbox/trunk/src/VBox/ValidationKit/utils/fs/FsPerf.cpp@ 77968

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