FsPerf.cpp@ 77928

Last change on this file since 77928 was 77928, checked in by vboxsync, 6 years ago
FsPerf: Do the splice() syscall ourselves (forgot) so we can build this against really ancient glibc versions. bugref:9172
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File size: 187.0 KB

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1	/* $Id: FsPerf.cpp 77928 2019-03-28 00:05:23Z 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) fsPerfSpliceRecvThread(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 fsPerfSpliceSendFile(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, fsPerfSpliceRecvThread, 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	RTTestIFailed("%u: splice(file, &%#RX64, pipe, NULL, %#zx, 0) failed (%zd): %d (%Rrc), offFileIn=%#RX64\n",
2294	iLine, offFile, cbLeft, cbActual, iErr, RTErrConvertFromErrno(iErr), (uint64_t)offFileIn);
2295	break;
2296	}
2297	RTTESTI_CHECK_BREAK((uint64_t)cbActual <= cbLeft);
2298	if ((uint64_t)offFileIn != offFile + (uint64_t)cbActual)
2299	{
2300	RTTestIFailed("%u: splice(file, &%#RX64, pipe, NULL, %#zx, 0): %#zx; offFileIn=%#RX64, expected %#RX64\n",
2301	iLine, offFile, cbLeft, cbActual, (uint64_t)offFileIn, offFile + (uint64_t)cbActual);
2302	break;
2303	}
2304	if (cbActual > 0)
2305	{
2306	pArgs->cCalls++;
2307	offFile += (size_t)cbActual;
2308	cbTotal += (size_t)cbActual;
2309	cbLeft -= (size_t)cbActual;
2310	}
2311	else
2312	break;
2313	} while (cbLeft > 0);
2314
2315	if (cbTotal != pArgs->cbSent)
2316	RTTestIFailed("%u: spliced a total of %#zx bytes, expected %#zx!\n", iLine, cbTotal, pArgs->cbSent);
2317
2318	RTTESTI_CHECK_RC(RTPipeClose(hPipeW), VINF_SUCCESS);
2319	RTTESTI_CHECK_RC(RTThreadWait(hThread, 30 * RT_NS_1SEC, NULL), VINF_SUCCESS);
2320
2321	if (pArgs->tsThreadDone >= tsStart)
2322	return RT_MAX(pArgs->tsThreadDone - tsStart, 1);
2323	}
2324	return 0;
2325	}
2326
2327
2328	static void fsPerfSpliceToPipe(RTFILE hFile1, uint64_t cbFile)
2329	{
2330	RTTestISub("splice/to-pipe");
2331
2332	/*
2333	* splice was introduced in 2.6.17 according to the man-page.
2334	*/
2335	char szRelease[64];
2336	RTSystemQueryOSInfo(RTSYSOSINFO_RELEASE, szRelease, sizeof(szRelease));
2337	if (RTStrVersionCompare(szRelease, "2.6.17") < 0)
2338	{
2339	RTTestPassed(g_hTest, "too old kernel (%s)", szRelease);
2340	return;
2341	}
2342
2343	uint64_t const cbFileMax = RT_MIN(cbFile, UINT32_MAX - PAGE_OFFSET_MASK);
2344	signal(SIGPIPE, SIG_IGN);
2345
2346	/*
2347	* Allocate a buffer.
2348	*/
2349	FSPERFSPLICEARGS Args;
2350	Args.cbBuf = RT_MIN(cbFileMax, _16M);
2351	Args.pbBuf = (uint8_t *)RTMemAlloc(Args.cbBuf);
2352	while (!Args.pbBuf)
2353	{
2354	Args.cbBuf /= 8;
2355	RTTESTI_CHECK_RETV(Args.cbBuf >= _64K);
2356	Args.pbBuf = (uint8_t *)RTMemAlloc(Args.cbBuf);
2357	}
2358
2359	/*
2360	* First iteration with default buffer content.
2361	*/
2362	fsPerfSpliceSendFile(&Args, hFile1, 0, cbFileMax, cbFileMax, 0xf6, true /fCheckBuf/, __LINE__);
2363	if (cbFileMax == cbFile)
2364	fsPerfSpliceSendFile(&Args, hFile1, 63, cbFileMax, cbFileMax - 63, 0xf6, true /fCheckBuf/, __LINE__);
2365	else
2366	fsPerfSpliceSendFile(&Args, hFile1, 63, cbFileMax - 63, cbFileMax - 63, 0xf6, true /fCheckBuf/, __LINE__);
2367
2368	/*
2369	* Write a block using the regular API and then send it, checking that
2370	* the any caching that sendfile does is correctly updated.
2371	*/
2372	uint8_t bFiller = 0xf6;
2373	size_t cbToSend = RT_MIN(cbFileMax, Args.cbBuf);
2374	do
2375	{
2376	fsPerfSpliceSendFile(&Args, hFile1, 0, cbToSend, cbToSend, bFiller, true /fCheckBuf/, __LINE__); /* prime cache */
2377
2378	bFiller += 1;
2379	fsPerfFillWriteBuf(0, Args.pbBuf, cbToSend, bFiller);
2380	RTTESTI_CHECK_RC(RTFileWriteAt(hFile1, 0, Args.pbBuf, cbToSend, NULL), VINF_SUCCESS);
2381
2382	fsPerfSpliceSendFile(&Args, hFile1, 0, cbToSend, cbToSend, bFiller, true /fCheckBuf/, __LINE__);
2383
2384	cbToSend /= 2;
2385	} while (cbToSend >= PAGE_SIZE && ((unsigned)bFiller - 0xf7U) < 64);
2386
2387	/*
2388	* Restore buffer content
2389	*/
2390	bFiller = 0xf6;
2391	fsPerfFillWriteBuf(0, Args.pbBuf, Args.cbBuf, bFiller);
2392	RTTESTI_CHECK_RC(RTFileWriteAt(hFile1, 0, Args.pbBuf, Args.cbBuf, NULL), VINF_SUCCESS);
2393
2394	/*
2395	* Do 128 random sends.
2396	*/
2397	uint64_t const cbSmall = RT_MIN(_256K, cbFileMax / 16);
2398	for (uint32_t iTest = 0; iTest < 128; iTest++)
2399	{
2400	cbToSend = (size_t)RTRandU64Ex(1, iTest < 64 ? cbSmall : cbFileMax);
2401	uint64_t const offToSendFrom = RTRandU64Ex(0, cbFile - 1);
2402	uint64_t const cbSent = offToSendFrom + cbToSend <= cbFile ? cbToSend : cbFile - offToSendFrom;
2403
2404	fsPerfSpliceSendFile(&Args, hFile1, offToSendFrom, cbToSend, cbSent, bFiller, true /fCheckBuf/, __LINE__);
2405	}
2406
2407	/*
2408	* Benchmark it.
2409	*/
2410	Args.cCalls = 0;
2411	uint32_t cIterations = 0;
2412	uint64_t nsElapsed = 0;
2413	for (;;)
2414	{
2415	uint64_t cNsThis = fsPerfSpliceSendFile(&Args, hFile1, 0, cbFileMax, cbFileMax, 0xf6, false /fCheckBuf/, __LINE__);
2416	nsElapsed += cNsThis;
2417	cIterations++;
2418	if (!cNsThis \|\| nsElapsed >= g_nsTestRun)
2419	break;
2420	}
2421	uint64_t cbTotal = cbFileMax * cIterations;
2422	RTTestIValue("latency", nsElapsed / Args.cCalls, RTTESTUNIT_NS_PER_CALL);
2423	RTTestIValue("throughput", (uint64_t)(cbTotal / ((double)nsElapsed / RT_NS_1SEC)), RTTESTUNIT_BYTES_PER_SEC);
2424	RTTestIValue("calls", Args.cCalls, RTTESTUNIT_CALLS);
2425	RTTestIValue("bytes/call", cbTotal / Args.cCalls, RTTESTUNIT_BYTES);
2426	RTTestIValue("iterations", cIterations, RTTESTUNIT_NONE);
2427	RTTestIValue("bytes", cbTotal, RTTESTUNIT_BYTES);
2428	if (g_fShowDuration)
2429	RTTestIValue("duration", nsElapsed, RTTESTUNIT_NS);
2430
2431	/*
2432	* Cleanup.
2433	*/
2434	RTMemFree(Args.pbBuf);
2435	}
2436
2437
2438	/** Thread sending the bytes to a splice() call. */
2439	static DECLCALLBACK(int) fsPerfSpliceSendThread(RTTHREAD hSelf, void *pvUser)
2440	{
2441	FSPERFSPLICEARGS pArgs = (FSPERFSPLICEARGS )pvUser;
2442	int rc = VINF_SUCCESS;
2443
2444	uint64_t offFile = pArgs->offFile;
2445	uint64_t cbTotalSent = 0;
2446	while (cbTotalSent < pArgs->cbSent)
2447	{
2448	size_t const cbToSend = RT_MIN(pArgs->cbBuf, pArgs->cbSent - cbTotalSent);
2449	fsPerfFillWriteBuf(offFile, pArgs->pbBuf, cbToSend, pArgs->bFiller);
2450	RTTEST_CHECK_RC_BREAK(g_hTest, rc = RTPipeWriteBlocking(pArgs->hPipe, pArgs->pbBuf, cbToSend, NULL), VINF_SUCCESS);
2451	offFile += cbToSend;
2452	cbTotalSent += cbToSend;
2453	}
2454
2455	pArgs->tsThreadDone = RTTimeNanoTS();
2456
2457	RTTEST_CHECK_RC(g_hTest, RTPipeClose(pArgs->hPipe), VINF_SUCCESS);
2458	pArgs->hPipe = NIL_RTPIPE;
2459
2460	RT_NOREF(hSelf);
2461	return rc;
2462	}
2463
2464
2465	/** Fill hFile1 via a pipe and the Linux-specific splice() syscall. */
2466	static uint64_t fsPerfSpliceWriteFile(FSPERFSPLICEARGS *pArgs, RTFILE hFile1, uint64_t offFile,
2467	size_t cbSend, uint64_t cbSent, uint8_t bFiller, bool fCheckFile, unsigned iLine)
2468	{
2469	/* Copy parameters to the argument structure: */
2470	pArgs->offFile = offFile;
2471	pArgs->cbSend = cbSend;
2472	pArgs->cbSent = cbSent;
2473	pArgs->bFiller = bFiller;
2474	pArgs->fCheckBuf = false;
2475
2476	/* Create a socket pair. */
2477	pArgs->hPipe = NIL_RTPIPE;
2478	RTPIPE hPipeR = NIL_RTPIPE;
2479	RTTESTI_CHECK_RC_RET(RTPipeCreate(&hPipeR, &pArgs->hPipe, 0 /fFlags/), VINF_SUCCESS, 0);
2480
2481	/* Create the receiving thread: */
2482	int rc;
2483	RTTHREAD hThread = NIL_RTTHREAD;
2484	RTTESTI_CHECK_RC(rc = RTThreadCreate(&hThread, fsPerfSpliceSendThread, pArgs, 0,
2485	RTTHREADTYPE_DEFAULT, RTTHREADFLAGS_WAITABLE, "splicerecv"), VINF_SUCCESS);
2486	if (RT_SUCCESS(rc))
2487	{
2488	/*
2489	* Do the splicing.
2490	*/
2491	uint64_t const tsStart = RTTimeNanoTS();
2492	size_t cbLeft = cbSend;
2493	size_t cbTotal = 0;
2494	do
2495	{
2496	loff_t offFileOut = offFile;
2497	ssize_t cbActual = syscall_splice((int)RTPipeToNative(hPipeR), NULL, (int)RTFileToNative(hFile1), &offFileOut,
2498	cbLeft, 0 /fFlags/);
2499	int const iErr = errno;
2500	if (RT_UNLIKELY(cbActual < 0))
2501	{
2502	RTTestIFailed("%u: splice(pipe, NULL, file, &%#RX64, %#zx, 0) failed (%zd): %d (%Rrc), offFileOut=%#RX64\n",
2503	iLine, offFile, cbLeft, cbActual, iErr, RTErrConvertFromErrno(iErr), (uint64_t)offFileOut);
2504	break;
2505	}
2506	RTTESTI_CHECK_BREAK((uint64_t)cbActual <= cbLeft);
2507	if ((uint64_t)offFileOut != offFile + (uint64_t)cbActual)
2508	{
2509	RTTestIFailed("%u: splice(pipe, NULL, file, &%#RX64, %#zx, 0): %#zx; offFileOut=%#RX64, expected %#RX64\n",
2510	iLine, offFile, cbLeft, cbActual, (uint64_t)offFileOut, offFile + (uint64_t)cbActual);
2511	break;
2512	}
2513	if (cbActual > 0)
2514	{
2515	pArgs->cCalls++;
2516	offFile += (size_t)cbActual;
2517	cbTotal += (size_t)cbActual;
2518	cbLeft -= (size_t)cbActual;
2519	}
2520	else
2521	break;
2522	} while (cbLeft > 0);
2523	uint64_t const nsElapsed = RTTimeNanoTS() - tsStart;
2524
2525	if (cbTotal != pArgs->cbSent)
2526	RTTestIFailed("%u: spliced a total of %#zx bytes, expected %#zx!\n", iLine, cbTotal, pArgs->cbSent);
2527
2528	RTTESTI_CHECK_RC(RTPipeClose(hPipeR), VINF_SUCCESS);
2529	RTTESTI_CHECK_RC(RTThreadWait(hThread, 30 * RT_NS_1SEC, NULL), VINF_SUCCESS);
2530
2531	/* Check the file content. */
2532	if (fCheckFile && cbTotal == pArgs->cbSent)
2533	{
2534	offFile = pArgs->offFile;
2535	cbLeft = cbSent;
2536	while (cbLeft > 0)
2537	{
2538	size_t cbToRead = RT_MIN(cbLeft, pArgs->cbBuf);
2539	RTTESTI_CHECK_RC_BREAK(RTFileReadAt(hFile1, offFile, pArgs->pbBuf, cbToRead, NULL), VINF_SUCCESS);
2540	if (!fsPerfCheckReadBuf(iLine, offFile, pArgs->pbBuf, cbToRead, pArgs->bFiller))
2541	break;
2542	offFile += cbToRead;
2543	cbLeft -= cbToRead;
2544	}
2545	}
2546	return nsElapsed;
2547	}
2548	return 0;
2549	}
2550
2551
2552	static void fsPerfSpliceToFile(RTFILE hFile1, uint64_t cbFile)
2553	{
2554	RTTestISub("splice/to-file");
2555
2556	/*
2557	* splice was introduced in 2.6.17 according to the man-page.
2558	*/
2559	char szRelease[64];
2560	RTSystemQueryOSInfo(RTSYSOSINFO_RELEASE, szRelease, sizeof(szRelease));
2561	if (RTStrVersionCompare(szRelease, "2.6.17") < 0)
2562	{
2563	RTTestPassed(g_hTest, "too old kernel (%s)", szRelease);
2564	return;
2565	}
2566
2567	uint64_t const cbFileMax = RT_MIN(cbFile, UINT32_MAX - PAGE_OFFSET_MASK);
2568	signal(SIGPIPE, SIG_IGN);
2569
2570	/*
2571	* Allocate a buffer.
2572	*/
2573	FSPERFSPLICEARGS Args;
2574	Args.cbBuf = RT_MIN(cbFileMax, _16M);
2575	Args.pbBuf = (uint8_t *)RTMemAlloc(Args.cbBuf);
2576	while (!Args.pbBuf)
2577	{
2578	Args.cbBuf /= 8;
2579	RTTESTI_CHECK_RETV(Args.cbBuf >= _64K);
2580	Args.pbBuf = (uint8_t *)RTMemAlloc(Args.cbBuf);
2581	}
2582
2583	/*
2584	* Do the whole file.
2585	*/
2586	uint8_t bFiller = 0x76;
2587	fsPerfSpliceWriteFile(&Args, hFile1, 0, cbFileMax, cbFileMax, bFiller, true /fCheckFile/, __LINE__);
2588
2589	/*
2590	* Do 64 random chunks (this is slower).
2591	*/
2592	uint64_t const cbSmall = RT_MIN(_256K, cbFileMax / 16);
2593	for (uint32_t iTest = 0; iTest < 64; iTest++)
2594	{
2595	size_t const cbToWrite = (size_t)RTRandU64Ex(1, iTest < 24 ? cbSmall : cbFileMax);
2596	uint64_t const offToWriteAt = RTRandU64Ex(0, cbFile - cbToWrite);
2597	uint64_t const cbTryRead = cbToWrite + (iTest & 1 ? RTRandU32Ex(0, _64K) : 0);
2598
2599	bFiller++;
2600	fsPerfSpliceWriteFile(&Args, hFile1, offToWriteAt, cbTryRead, cbToWrite, bFiller, true /fCheckFile/, __LINE__);
2601	}
2602
2603	/*
2604	* Benchmark it.
2605	*/
2606	Args.cCalls = 0;
2607	uint32_t cIterations = 0;
2608	uint64_t nsElapsed = 0;
2609	for (;;)
2610	{
2611	uint64_t cNsThis = fsPerfSpliceWriteFile(&Args, hFile1, 0, cbFileMax, cbFileMax, 0xf6, false /fCheckBuf/, __LINE__);
2612	nsElapsed += cNsThis;
2613	cIterations++;
2614	if (!cNsThis \|\| nsElapsed >= g_nsTestRun)
2615	break;
2616	}
2617	uint64_t cbTotal = cbFileMax * cIterations;
2618	RTTestIValue("latency", nsElapsed / Args.cCalls, RTTESTUNIT_NS_PER_CALL);
2619	RTTestIValue("throughput", (uint64_t)(cbTotal / ((double)nsElapsed / RT_NS_1SEC)), RTTESTUNIT_BYTES_PER_SEC);
2620	RTTestIValue("calls", Args.cCalls, RTTESTUNIT_CALLS);
2621	RTTestIValue("bytes/call", cbTotal / Args.cCalls, RTTESTUNIT_BYTES);
2622	RTTestIValue("iterations", cIterations, RTTESTUNIT_NONE);
2623	RTTestIValue("bytes", cbTotal, RTTESTUNIT_BYTES);
2624	if (g_fShowDuration)
2625	RTTestIValue("duration", nsElapsed, RTTESTUNIT_NS);
2626
2627	/*
2628	* Cleanup.
2629	*/
2630	RTMemFree(Args.pbBuf);
2631	}
2632
2633	#endif /* RT_OS_LINUX */
2634
2635	/** For fsPerfIoRead and fsPerfIoWrite. */
2636	#define PROFILE_IO_FN(a_szOperation, a_fnCall) \
2637	do \
2638	{ \
2639	RTTESTI_CHECK_RC_RETV(RTFileSeek(hFile1, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS); \
2640	uint64_t offActual = 0; \
2641	uint32_t cSeeks = 0; \
2642	\
2643	/* Estimate how many iterations we need to fill up the given timeslot: */ \
2644	fsPerfYield(); \
2645	uint64_t nsStart = RTTimeNanoTS(); \
2646	uint64_t ns; \
2647	do \
2648	ns = RTTimeNanoTS(); \
2649	while (ns == nsStart); \
2650	nsStart = ns; \
2651	\
2652	uint64_t iIteration = 0; \
2653	do \
2654	{ \
2655	RTTESTI_CHECK_RC(a_fnCall, VINF_SUCCESS); \
2656	iIteration++; \
2657	ns = RTTimeNanoTS() - nsStart; \
2658	} while (ns < RT_NS_10MS); \
2659	ns /= iIteration; \
2660	if (ns > g_nsPerNanoTSCall + 32) \
2661	ns -= g_nsPerNanoTSCall; \
2662	uint64_t cIterations = g_nsTestRun / ns; \
2663	if (cIterations < 2) \
2664	cIterations = 2; \
2665	else if (cIterations & 1) \
2666	cIterations++; \
2667	\
2668	/* Do the actual profiling: */ \
2669	cSeeks = 0; \
2670	iIteration = 0; \
2671	fsPerfYield(); \
2672	nsStart = RTTimeNanoTS(); \
2673	for (uint32_t iAdjust = 0; iAdjust < 4; iAdjust++) \
2674	{ \
2675	for (; iIteration < cIterations; iIteration++)\
2676	RTTESTI_CHECK_RC(a_fnCall, VINF_SUCCESS); \
2677	ns = RTTimeNanoTS() - nsStart;\
2678	if (ns >= g_nsTestRun - (g_nsTestRun / 10)) \
2679	break; \
2680	cIterations += cIterations / 4; \
2681	if (cIterations & 1) \
2682	cIterations++; \
2683	nsStart += g_nsPerNanoTSCall; \
2684	} \
2685	RTTestIValueF(ns / iIteration, \
2686	RTTESTUNIT_NS_PER_OCCURRENCE, a_szOperation "/seq/%RU32 latency", cbBlock); \
2687	RTTestIValueF((uint64_t)((uint64_t)iIteration * cbBlock / ((double)ns / RT_NS_1SEC)), \
2688	RTTESTUNIT_BYTES_PER_SEC, a_szOperation "/seq/%RU32 throughput", cbBlock); \
2689	RTTestIValueF(iIteration, \
2690	RTTESTUNIT_CALLS, a_szOperation "/seq/%RU32 calls", cbBlock); \
2691	RTTestIValueF((uint64_t)iIteration * cbBlock, \
2692	RTTESTUNIT_BYTES, a_szOperation "/seq/%RU32 bytes", cbBlock); \
2693	RTTestIValueF(cSeeks, \
2694	RTTESTUNIT_OCCURRENCES, a_szOperation "/seq/%RU32 seeks", cbBlock); \
2695	if (g_fShowDuration) \
2696	RTTestIValueF(ns, RTTESTUNIT_NS, a_szOperation "/seq/%RU32 duration", cbBlock); \
2697	} while (0)
2698
2699
2700	/**
2701	* One RTFileRead profiling iteration.
2702	*/
2703	DECL_FORCE_INLINE(int) fsPerfIoReadWorker(RTFILE hFile1, uint64_t cbFile, uint32_t cbBlock, uint8_t *pbBlock,
2704	uint64_t poffActual, uint32_t pcSeeks)
2705	{
2706	/* Do we need to seek back to the start? */
2707	if (*poffActual + cbBlock <= cbFile)
2708	{ /* likely */ }
2709	else
2710	{
2711	RTTESTI_CHECK_RC_RET(RTFileSeek(hFile1, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS, rcCheck);
2712	*pcSeeks += 1;
2713	*poffActual = 0;
2714	}
2715
2716	size_t cbActuallyRead = 0;
2717	RTTESTI_CHECK_RC_RET(RTFileRead(hFile1, pbBlock, cbBlock, &cbActuallyRead), VINF_SUCCESS, rcCheck);
2718	if (cbActuallyRead == cbBlock)
2719	{
2720	*poffActual += cbActuallyRead;
2721	return VINF_SUCCESS;
2722	}
2723	RTTestIFailed("RTFileRead at %#RX64 returned just %#x bytes, expected %#x", *poffActual, cbActuallyRead, cbBlock);
2724	*poffActual += cbActuallyRead;
2725	return VERR_READ_ERROR;
2726	}
2727
2728
2729	void fsPerfIoReadBlockSize(RTFILE hFile1, uint64_t cbFile, uint32_t cbBlock)
2730	{
2731	RTTestISubF("IO - Sequential read %RU32", cbBlock);
2732
2733	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(cbBlock);
2734	if (pbBuf)
2735	{
2736	memset(pbBuf, 0xf7, cbBlock);
2737	PROFILE_IO_FN("RTFileRead", fsPerfIoReadWorker(hFile1, cbFile, cbBlock, pbBuf, &offActual, &cSeeks));
2738	RTMemPageFree(pbBuf, cbBlock);
2739	}
2740	else
2741	RTTestSkipped(g_hTest, "insufficient (virtual) memory available");
2742	}
2743
2744
2745	/** preadv is too new to be useful, so we use the readv api via this wrapper. */
2746	DECLINLINE(int) myFileSgReadAt(RTFILE hFile, RTFOFF off, PRTSGBUF pSgBuf, size_t cbToRead, size_t *pcbRead)
2747	{
2748	int rc = RTFileSeek(hFile, off, RTFILE_SEEK_BEGIN, NULL);
2749	if (RT_SUCCESS(rc))
2750	rc = RTFileSgRead(hFile, pSgBuf, cbToRead, pcbRead);
2751	return rc;
2752	}
2753
2754
2755	void fsPerfRead(RTFILE hFile1, RTFILE hFileNoCache, uint64_t cbFile)
2756	{
2757	RTTestISubF("IO - RTFileRead");
2758
2759	/*
2760	* Allocate a big buffer we can play around with. Min size is 1MB.
2761	*/
2762	size_t cbBuf = cbFile < _64M ? (size_t)cbFile : _64M;
2763	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(cbBuf);
2764	while (!pbBuf)
2765	{
2766	cbBuf /= 2;
2767	RTTESTI_CHECK_RETV(cbBuf >= _1M);
2768	pbBuf = (uint8_t *)RTMemPageAlloc(_32M);
2769	}
2770
2771	#if 1
2772	/*
2773	* Start at the beginning and read the full buffer in random small chunks, thereby
2774	* checking that unaligned buffer addresses, size and file offsets work fine.
2775	*/
2776	struct
2777	{
2778	uint64_t offFile;
2779	uint32_t cbMax;
2780	} aRuns[] = { { 0, 127 }, { cbFile - cbBuf, UINT32_MAX }, { 0, UINT32_MAX -1 }};
2781	for (uint32_t i = 0; i < RT_ELEMENTS(aRuns); i++)
2782	{
2783	memset(pbBuf, 0x55, cbBuf);
2784	RTTESTI_CHECK_RC(RTFileSeek(hFile1, aRuns[i].offFile, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
2785	for (size_t offBuf = 0; offBuf < cbBuf; )
2786	{
2787	uint32_t const cbLeft = (uint32_t)(cbBuf - offBuf);
2788	uint32_t const cbToRead = aRuns[i].cbMax < UINT32_MAX / 2 ? RTRandU32Ex(1, RT_MIN(aRuns[i].cbMax, cbLeft))
2789	: aRuns[i].cbMax == UINT32_MAX ? RTRandU32Ex(RT_MAX(cbLeft / 4, 1), cbLeft)
2790	: RTRandU32Ex(cbLeft >= _8K ? _8K : 1, RT_MIN(_1M, cbLeft));
2791	size_t cbActual = 0;
2792	RTTESTI_CHECK_RC(RTFileRead(hFile1, &pbBuf[offBuf], cbToRead, &cbActual), VINF_SUCCESS);
2793	if (cbActual == cbToRead)
2794	{
2795	offBuf += cbActual;
2796	RTTESTI_CHECK_MSG(RTFileTell(hFile1) == aRuns[i].offFile + offBuf,
2797	("%#RX64, expected %#RX64\n", RTFileTell(hFile1), aRuns[i].offFile + offBuf));
2798	}
2799	else
2800	{
2801	RTTestIFailed("Attempting to read %#x bytes at %#zx, only got %#x bytes back! (cbLeft=%#x cbBuf=%#zx)\n",
2802	cbToRead, offBuf, cbActual, cbLeft, cbBuf);
2803	if (cbActual)
2804	offBuf += cbActual;
2805	else
2806	pbBuf[offBuf++] = 0x11;
2807	}
2808	}
2809	fsPerfCheckReadBuf(__LINE__, aRuns[i].offFile, pbBuf, cbBuf);
2810	}
2811
2812	/*
2813	* Test reading beyond the end of the file.
2814	*/
2815	size_t const acbMax[] = { cbBuf, _64K, _16K, _4K, 256 };
2816	uint32_t const aoffFromEos[] =
2817	{ 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,
2818	4092, 4093, 4094, 4095, 4096, 4097, 4098, 4099, 4100, 8192, 16384, 32767, 32768, 32769, 65535, 65536, _1M - 1
2819	};
2820	for (unsigned iMax = 0; iMax < RT_ELEMENTS(acbMax); iMax++)
2821	{
2822	size_t const cbMaxRead = acbMax[iMax];
2823	for (uint32_t iOffFromEos = 0; iOffFromEos < RT_ELEMENTS(aoffFromEos); iOffFromEos++)
2824	{
2825	uint32_t off = aoffFromEos[iOffFromEos];
2826	if (off >= cbMaxRead)
2827	continue;
2828	RTTESTI_CHECK_RC(RTFileSeek(hFile1, cbFile - off, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
2829	size_t cbActual = ~(size_t)0;
2830	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, cbMaxRead, &cbActual), VINF_SUCCESS);
2831	RTTESTI_CHECK(cbActual == off);
2832
2833	RTTESTI_CHECK_RC(RTFileSeek(hFile1, cbFile - off, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
2834	cbActual = ~(size_t)0;
2835	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, off, &cbActual), VINF_SUCCESS);
2836	RTTESTI_CHECK_MSG(cbActual == off, ("%#zx vs %#zx\n", cbActual, off));
2837
2838	cbActual = ~(size_t)0;
2839	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, 1, &cbActual), VINF_SUCCESS);
2840	RTTESTI_CHECK_MSG(cbActual == 0, ("cbActual=%zu\n", cbActual));
2841
2842	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, cbMaxRead, NULL), VERR_EOF);
2843
2844	/* Repeat using native APIs in case IPRT or other layers hid status codes: */
2845	#if defined(RT_OS_OS2) \|\| defined(RT_OS_WINDOWS)
2846	RTTESTI_CHECK_RC(RTFileSeek(hFile1, cbFile - off, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
2847	# ifdef RT_OS_OS2
2848	ULONG cbActual2 = ~(ULONG)0;
2849	APIRET orc = DosRead((HFILE)RTFileToNative(hFile1), pbBuf, cbMaxRead, &cbActual2);
2850	RTTESTI_CHECK_MSG(orc == NO_ERROR, ("orc=%u, expected 0\n", orc));
2851	RTTESTI_CHECK_MSG(cbActual2 == off, ("%#x vs %#x\n", cbActual2, off));
2852	# else
2853	IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER;
2854	NTSTATUS rcNt = NtReadFile((HANDLE)RTFileToNative(hFile1), NULL /hEvent/, NULL /ApcRoutine/, NULL /ApcContext/,
2855	&Ios, pbBuf, (ULONG)cbMaxRead, NULL /poffFile/, NULL /Key/);
2856	if (off == 0)
2857	RTTESTI_CHECK_MSG(rcNt == STATUS_END_OF_FILE, ("rcNt=%#x, expected %#x\n", rcNt, STATUS_END_OF_FILE));
2858	else
2859	RTTESTI_CHECK_MSG(rcNt == STATUS_SUCCESS, ("rcNt=%#x, expected 0 (off=%#x cbMaxRead=%#zx)\n", rcNt, off, cbMaxRead));
2860	RTTESTI_CHECK_MSG(Ios.Information == off, ("%#zx vs %#x\n", Ios.Information, off));
2861	# endif
2862
2863	# ifdef RT_OS_OS2
2864	cbActual2 = ~(ULONG)0;
2865	orc = DosRead((HFILE)RTFileToNative(hFile1), pbBuf, 1, &cbActual2);
2866	RTTESTI_CHECK_MSG(orc == NO_ERROR, ("orc=%u, expected 0\n", orc));
2867	RTTESTI_CHECK_MSG(cbActual2 == 0, ("cbActual2=%u\n", cbActual2));
2868	# else
2869	RTNT_IO_STATUS_BLOCK_REINIT(&Ios);
2870	rcNt = NtReadFile((HANDLE)RTFileToNative(hFile1), NULL /hEvent/, NULL /ApcRoutine/, NULL /ApcContext/,
2871	&Ios, pbBuf, 1, NULL /poffFile/, NULL /Key/);
2872	RTTESTI_CHECK_MSG(rcNt == STATUS_END_OF_FILE, ("rcNt=%#x, expected %#x\n", rcNt, STATUS_END_OF_FILE));
2873	# endif
2874
2875	#endif
2876	}
2877	}
2878
2879	/*
2880	* Test reading beyond end of the file.
2881	*/
2882	for (unsigned iMax = 0; iMax < RT_ELEMENTS(acbMax); iMax++)
2883	{
2884	size_t const cbMaxRead = acbMax[iMax];
2885	for (uint32_t off = 0; off < 256; off++)
2886	{
2887	RTTESTI_CHECK_RC(RTFileSeek(hFile1, cbFile + off, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
2888	size_t cbActual = ~(size_t)0;
2889	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, cbMaxRead, &cbActual), VINF_SUCCESS);
2890	RTTESTI_CHECK(cbActual == 0);
2891
2892	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, cbMaxRead, NULL), VERR_EOF);
2893
2894	/* Repeat using native APIs in case IPRT or other layers hid status codes: */
2895	#if defined(RT_OS_OS2) \|\| defined(RT_OS_WINDOWS)
2896	RTTESTI_CHECK_RC(RTFileSeek(hFile1, cbFile + off, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
2897	# ifdef RT_OS_OS2
2898	ULONG cbActual2 = ~(ULONG)0;
2899	APIRET orc = DosRead((HFILE)RTFileToNative(hFile1), pbBuf, cbMaxRead, &cbActual2);
2900	RTTESTI_CHECK_MSG(orc == NO_ERROR, ("orc=%u, expected 0\n", orc));
2901	RTTESTI_CHECK_MSG(cbActual2 == 0, ("%#x vs %#x\n", cbActual2, off));
2902	# else
2903	IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER;
2904	NTSTATUS rcNt = NtReadFile((HANDLE)RTFileToNative(hFile1), NULL /hEvent/, NULL /ApcRoutine/, NULL /ApcContext/,
2905	&Ios, pbBuf, (ULONG)cbMaxRead, NULL /poffFile/, NULL /Key/);
2906	RTTESTI_CHECK_MSG(rcNt == STATUS_END_OF_FILE, ("rcNt=%#x, expected %#x\n", rcNt, STATUS_END_OF_FILE));
2907	# endif
2908	#endif
2909	}
2910	}
2911
2912	/*
2913	* Do uncached access, must be page aligned.
2914	*/
2915	uint32_t cbPage = PAGE_SIZE;
2916	memset(pbBuf, 0x66, cbBuf);
2917	if (!g_fIgnoreNoCache \|\| hFileNoCache != NIL_RTFILE)
2918	{
2919	RTTESTI_CHECK_RC(RTFileSeek(hFileNoCache, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
2920	for (size_t offBuf = 0; offBuf < cbBuf; )
2921	{
2922	uint32_t const cPagesLeft = (uint32_t)((cbBuf - offBuf) / cbPage);
2923	uint32_t const cPagesToRead = RTRandU32Ex(1, cPagesLeft);
2924	size_t const cbToRead = cPagesToRead * (size_t)cbPage;
2925	size_t cbActual = 0;
2926	RTTESTI_CHECK_RC(RTFileRead(hFileNoCache, &pbBuf[offBuf], cbToRead, &cbActual), VINF_SUCCESS);
2927	if (cbActual == cbToRead)
2928	offBuf += cbActual;
2929	else
2930	{
2931	RTTestIFailed("Attempting to read %#zx bytes at %#zx, only got %#x bytes back!\n", cbToRead, offBuf, cbActual);
2932	if (cbActual)
2933	offBuf += cbActual;
2934	else
2935	{
2936	memset(&pbBuf[offBuf], 0x11, cbPage);
2937	offBuf += cbPage;
2938	}
2939	}
2940	}
2941	fsPerfCheckReadBuf(__LINE__, 0, pbBuf, cbBuf);
2942	}
2943
2944	/*
2945	* Check reading zero bytes at the end of the file.
2946	* Requires native call because RTFileWrite doesn't call kernel on zero byte reads.
2947	*/
2948	RTTESTI_CHECK_RC(RTFileSeek(hFile1, 0, RTFILE_SEEK_END, NULL), VINF_SUCCESS);
2949	# ifdef RT_OS_WINDOWS
2950	IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER;
2951	NTSTATUS rcNt = NtReadFile((HANDLE)RTFileToNative(hFile1), NULL, NULL, NULL, &Ios, pbBuf, 0, NULL, NULL);
2952	RTTESTI_CHECK_MSG(rcNt == STATUS_SUCCESS, ("rcNt=%#x", rcNt));
2953	RTTESTI_CHECK(Ios.Status == STATUS_SUCCESS);
2954	RTTESTI_CHECK(Ios.Information == 0);
2955
2956	RTNT_IO_STATUS_BLOCK_REINIT(&Ios);
2957	rcNt = NtReadFile((HANDLE)RTFileToNative(hFile1), NULL, NULL, NULL, &Ios, pbBuf, 1, NULL, NULL);
2958	RTTESTI_CHECK_MSG(rcNt == STATUS_END_OF_FILE, ("rcNt=%#x", rcNt));
2959	RTTESTI_CHECK(Ios.Status == STATUS_END_OF_FILE);
2960	RTTESTI_CHECK(Ios.Information == 0);
2961	# else
2962	ssize_t cbRead = read((int)RTFileToNative(hFile1), pbBuf, 0);
2963	RTTESTI_CHECK(cbRead == 0);
2964	# endif
2965
2966	#else
2967	RT_NOREF(hFileNoCache);
2968	#endif
2969
2970	/*
2971	* Scatter read function operation.
2972	*/
2973	#ifdef RT_OS_WINDOWS
2974	/** @todo RTFileSgReadAt is just a RTFileReadAt loop for windows NT. Need
2975	* to use ReadFileScatter (nocache + page aligned). */
2976	#elif !defined(RT_OS_OS2) /** @todo implement RTFileSg using list i/o */
2977
2978	# ifdef UIO_MAXIOV
2979	RTSGSEG aSegs[UIO_MAXIOV];
2980	# else
2981	RTSGSEG aSegs[512];
2982	# endif
2983	RTSGBUF SgBuf;
2984	uint32_t cIncr = 1;
2985	for (uint32_t cSegs = 1; cSegs <= RT_ELEMENTS(aSegs); cSegs += cIncr)
2986	{
2987	size_t const cbSeg = cbBuf / cSegs;
2988	size_t const cbToRead = cbSeg * cSegs;
2989	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
2990	{
2991	aSegs[iSeg].cbSeg = cbSeg;
2992	aSegs[iSeg].pvSeg = &pbBuf[cbToRead - (iSeg + 1) * cbSeg];
2993	}
2994	RTSgBufInit(&SgBuf, &aSegs[0], cSegs);
2995	int rc = myFileSgReadAt(hFile1, 0, &SgBuf, cbToRead, NULL);
2996	if (RT_SUCCESS(rc))
2997	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
2998	{
2999	if (!fsPerfCheckReadBuf(__LINE__, iSeg * cbSeg, &pbBuf[cbToRead - (iSeg + 1) * cbSeg], cbSeg))
3000	{
3001	cSegs = RT_ELEMENTS(aSegs);
3002	break;
3003	}
3004	}
3005	else
3006	{
3007	RTTestIFailed("myFileSgReadAt failed: %Rrc - cSegs=%u cbSegs=%#zx cbToRead=%#zx", rc, cSegs, cbSeg, cbToRead);
3008	break;
3009	}
3010	if (cSegs == 16)
3011	cIncr = 7;
3012	else if (cSegs == 16 * 7 + 16 /= 128/)
3013	cIncr = 64;
3014	}
3015
3016	for (uint32_t iTest = 0; iTest < 128; iTest++)
3017	{
3018	uint32_t cSegs = RTRandU32Ex(1, RT_ELEMENTS(aSegs));
3019	uint32_t iZeroSeg = cSegs > 10 ? RTRandU32Ex(0, cSegs - 1) : UINT32_MAX / 2;
3020	uint32_t cZeroSegs = cSegs > 10 ? RTRandU32Ex(1, RT_MIN(cSegs - iZeroSeg, 25)) : 0;
3021	size_t cbToRead = 0;
3022	size_t cbLeft = cbBuf;
3023	uint8_t *pbCur = &pbBuf[cbBuf];
3024	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
3025	{
3026	uint32_t iAlign = RTRandU32Ex(0, 3);
3027	if (iAlign & 2) /* end is page aligned */
3028	{
3029	cbLeft -= (uintptr_t)pbCur & PAGE_OFFSET_MASK;
3030	pbCur -= (uintptr_t)pbCur & PAGE_OFFSET_MASK;
3031	}
3032
3033	size_t cbSegOthers = (cSegs - iSeg) * _8K;
3034	size_t cbSegMax = cbLeft > cbSegOthers ? cbLeft - cbSegOthers
3035	: cbLeft > cSegs ? cbLeft - cSegs
3036	: cbLeft;
3037	size_t cbSeg = cbLeft != 0 ? RTRandU32Ex(0, cbSegMax) : 0;
3038	if (iAlign & 1) /* start is page aligned */
3039	cbSeg += ((uintptr_t)pbCur - cbSeg) & PAGE_OFFSET_MASK;
3040
3041	if (iSeg - iZeroSeg < cZeroSegs)
3042	cbSeg = 0;
3043
3044	cbToRead += cbSeg;
3045	cbLeft -= cbSeg;
3046	pbCur -= cbSeg;
3047	aSegs[iSeg].cbSeg = cbSeg;
3048	aSegs[iSeg].pvSeg = pbCur;
3049	}
3050
3051	uint64_t offFile = cbToRead < cbFile ? RTRandU64Ex(0, cbFile - cbToRead) : 0;
3052	RTSgBufInit(&SgBuf, &aSegs[0], cSegs);
3053	int rc = myFileSgReadAt(hFile1, offFile, &SgBuf, cbToRead, NULL);
3054	if (RT_SUCCESS(rc))
3055	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
3056	{
3057	if (!fsPerfCheckReadBuf(__LINE__, offFile, (uint8_t *)aSegs[iSeg].pvSeg, aSegs[iSeg].cbSeg))
3058	{
3059	RTTestIFailureDetails("iSeg=%#x cSegs=%#x cbSeg=%#zx cbToRead=%#zx\n", iSeg, cSegs, aSegs[iSeg].cbSeg, cbToRead);
3060	iTest = _16K;
3061	break;
3062	}
3063	offFile += aSegs[iSeg].cbSeg;
3064	}
3065	else
3066	{
3067	RTTestIFailed("myFileSgReadAt failed: %Rrc - cSegs=%#x cbToRead=%#zx", rc, cSegs, cbToRead);
3068	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
3069	RTTestIFailureDetails("aSeg[%u] = %p LB %#zx (last %p)\n", iSeg, aSegs[iSeg].pvSeg, aSegs[iSeg].cbSeg,
3070	(uint8_t *)aSegs[iSeg].pvSeg + aSegs[iSeg].cbSeg - 1);
3071	break;
3072	}
3073	}
3074
3075	/* reading beyond the end of the file */
3076	for (uint32_t cSegs = 1; cSegs < 6; cSegs++)
3077	for (uint32_t iTest = 0; iTest < 128; iTest++)
3078	{
3079	uint32_t const cbToRead = RTRandU32Ex(0, cbBuf);
3080	uint32_t const cbBeyond = cbToRead ? RTRandU32Ex(0, cbToRead) : 0;
3081	uint32_t const cbSeg = cbToRead / cSegs;
3082	uint32_t cbLeft = cbToRead;
3083	uint8_t *pbCur = &pbBuf[cbToRead];
3084	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
3085	{
3086	aSegs[iSeg].cbSeg = iSeg + 1 < cSegs ? cbSeg : cbLeft;
3087	aSegs[iSeg].pvSeg = pbCur -= aSegs[iSeg].cbSeg;
3088	cbLeft -= aSegs[iSeg].cbSeg;
3089	}
3090	Assert(pbCur == pbBuf);
3091
3092	uint64_t offFile = cbFile + cbBeyond - cbToRead;
3093	RTSgBufInit(&SgBuf, &aSegs[0], cSegs);
3094	int rcExpect = cbBeyond == 0 \|\| cbToRead == 0 ? VINF_SUCCESS : VERR_EOF;
3095	int rc = myFileSgReadAt(hFile1, offFile, &SgBuf, cbToRead, NULL);
3096	if (rc != rcExpect)
3097	{
3098	RTTestIFailed("myFileSgReadAt failed: %Rrc - cSegs=%#x cbToRead=%#zx cbBeyond=%#zx\n", rc, cSegs, cbToRead, cbBeyond);
3099	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
3100	RTTestIFailureDetails("aSeg[%u] = %p LB %#zx (last %p)\n", iSeg, aSegs[iSeg].pvSeg, aSegs[iSeg].cbSeg,
3101	(uint8_t *)aSegs[iSeg].pvSeg + aSegs[iSeg].cbSeg - 1);
3102	}
3103
3104	RTSgBufInit(&SgBuf, &aSegs[0], cSegs);
3105	size_t cbActual = 0;
3106	rc = myFileSgReadAt(hFile1, offFile, &SgBuf, cbToRead, &cbActual);
3107	if (rc != VINF_SUCCESS \|\| cbActual != cbToRead - cbBeyond)
3108	RTTestIFailed("myFileSgReadAt failed: %Rrc cbActual=%#zu - cSegs=%#x cbToRead=%#zx cbBeyond=%#zx expected %#zx\n",
3109	rc, cbActual, cSegs, cbToRead, cbBeyond, cbToRead - cbBeyond);
3110	if (RT_SUCCESS(rc) && cbActual > 0)
3111	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
3112	{
3113	if (!fsPerfCheckReadBuf(__LINE__, offFile, (uint8_t *)aSegs[iSeg].pvSeg, RT_MIN(cbActual, aSegs[iSeg].cbSeg)))
3114	{
3115	RTTestIFailureDetails("iSeg=%#x cSegs=%#x cbSeg=%#zx cbActual%#zx cbToRead=%#zx cbBeyond=%#zx\n",
3116	iSeg, cSegs, aSegs[iSeg].cbSeg, cbActual, cbToRead, cbBeyond);
3117	iTest = _16K;
3118	break;
3119	}
3120	if (cbActual <= aSegs[iSeg].cbSeg)
3121	break;
3122	cbActual -= aSegs[iSeg].cbSeg;
3123	offFile += aSegs[iSeg].cbSeg;
3124	}
3125	}
3126
3127	#endif
3128
3129	/*
3130	* Other OS specific stuff.
3131	*/
3132	#ifdef RT_OS_WINDOWS
3133	/* Check that reading at an offset modifies the position: */
3134	RTTESTI_CHECK_RC(RTFileSeek(hFile1, 0, RTFILE_SEEK_END, NULL), VINF_SUCCESS);
3135	RTTESTI_CHECK(RTFileTell(hFile1) == cbFile);
3136
3137	RTNT_IO_STATUS_BLOCK_REINIT(&Ios);
3138	LARGE_INTEGER offNt;
3139	offNt.QuadPart = cbFile / 2;
3140	rcNt = NtReadFile((HANDLE)RTFileToNative(hFile1), NULL, NULL, NULL, &Ios, pbBuf, _4K, &offNt, NULL);
3141	RTTESTI_CHECK_MSG(rcNt == STATUS_SUCCESS, ("rcNt=%#x", rcNt));
3142	RTTESTI_CHECK(Ios.Status == STATUS_SUCCESS);
3143	RTTESTI_CHECK(Ios.Information == _4K);
3144	RTTESTI_CHECK(RTFileTell(hFile1) == cbFile / 2 + _4K);
3145	fsPerfCheckReadBuf(__LINE__, cbFile / 2, pbBuf, _4K);
3146	#endif
3147
3148
3149	RTMemPageFree(pbBuf, cbBuf);
3150	}
3151
3152
3153	/**
3154	* One RTFileWrite profiling iteration.
3155	*/
3156	DECL_FORCE_INLINE(int) fsPerfIoWriteWorker(RTFILE hFile1, uint64_t cbFile, uint32_t cbBlock, uint8_t *pbBlock,
3157	uint64_t poffActual, uint32_t pcSeeks)
3158	{
3159	/* Do we need to seek back to the start? */
3160	if (*poffActual + cbBlock <= cbFile)
3161	{ /* likely */ }
3162	else
3163	{
3164	RTTESTI_CHECK_RC_RET(RTFileSeek(hFile1, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS, rcCheck);
3165	*pcSeeks += 1;
3166	*poffActual = 0;
3167	}
3168
3169	size_t cbActuallyWritten = 0;
3170	RTTESTI_CHECK_RC_RET(RTFileWrite(hFile1, pbBlock, cbBlock, &cbActuallyWritten), VINF_SUCCESS, rcCheck);
3171	if (cbActuallyWritten == cbBlock)
3172	{
3173	*poffActual += cbActuallyWritten;
3174	return VINF_SUCCESS;
3175	}
3176	RTTestIFailed("RTFileWrite at %#RX64 returned just %#x bytes, expected %#x", *poffActual, cbActuallyWritten, cbBlock);
3177	*poffActual += cbActuallyWritten;
3178	return VERR_WRITE_ERROR;
3179	}
3180
3181
3182	void fsPerfIoWriteBlockSize(RTFILE hFile1, uint64_t cbFile, uint32_t cbBlock)
3183	{
3184	RTTestISubF("IO - Sequential write %RU32", cbBlock);
3185
3186	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(cbBlock);
3187	if (pbBuf)
3188	{
3189	memset(pbBuf, 0xf7, cbBlock);
3190	PROFILE_IO_FN("RTFileWrite", fsPerfIoWriteWorker(hFile1, cbFile, cbBlock, pbBuf, &offActual, &cSeeks));
3191	RTMemPageFree(pbBuf, cbBlock);
3192	}
3193	else
3194	RTTestSkipped(g_hTest, "insufficient (virtual) memory available");
3195	}
3196
3197
3198	/** pwritev is too new to be useful, so we use the writev api via this wrapper. */
3199	DECLINLINE(int) myFileSgWriteAt(RTFILE hFile, RTFOFF off, PRTSGBUF pSgBuf, size_t cbToWrite, size_t *pcbWritten)
3200	{
3201	int rc = RTFileSeek(hFile, off, RTFILE_SEEK_BEGIN, NULL);
3202	if (RT_SUCCESS(rc))
3203	rc = RTFileSgWrite(hFile, pSgBuf, cbToWrite, pcbWritten);
3204	return rc;
3205	}
3206
3207
3208	void fsPerfWrite(RTFILE hFile1, RTFILE hFileNoCache, RTFILE hFileWriteThru, uint64_t cbFile)
3209	{
3210	RTTestISubF("IO - RTFileWrite");
3211
3212	/*
3213	* Allocate a big buffer we can play around with. Min size is 1MB.
3214	*/
3215	size_t cbBuf = cbFile < _64M ? (size_t)cbFile : _64M;
3216	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(cbBuf);
3217	while (!pbBuf)
3218	{
3219	cbBuf /= 2;
3220	RTTESTI_CHECK_RETV(cbBuf >= _1M);
3221	pbBuf = (uint8_t *)RTMemPageAlloc(_32M);
3222	}
3223
3224	uint8_t bFiller = 0x88;
3225
3226	#if 1
3227	/*
3228	* Start at the beginning and write out the full buffer in random small chunks, thereby
3229	* checking that unaligned buffer addresses, size and file offsets work fine.
3230	*/
3231	struct
3232	{
3233	uint64_t offFile;
3234	uint32_t cbMax;
3235	} aRuns[] = { { 0, 127 }, { cbFile - cbBuf, UINT32_MAX }, { 0, UINT32_MAX -1 }};
3236	for (uint32_t i = 0; i < RT_ELEMENTS(aRuns); i++, bFiller)
3237	{
3238	fsPerfFillWriteBuf(aRuns[i].offFile, pbBuf, cbBuf, bFiller);
3239	fsPerfCheckReadBuf(__LINE__, aRuns[i].offFile, pbBuf, cbBuf, bFiller);
3240
3241	RTTESTI_CHECK_RC(RTFileSeek(hFile1, aRuns[i].offFile, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
3242	for (size_t offBuf = 0; offBuf < cbBuf; )
3243	{
3244	uint32_t const cbLeft = (uint32_t)(cbBuf - offBuf);
3245	uint32_t const cbToWrite = aRuns[i].cbMax < UINT32_MAX / 2 ? RTRandU32Ex(1, RT_MIN(aRuns[i].cbMax, cbLeft))
3246	: aRuns[i].cbMax == UINT32_MAX ? RTRandU32Ex(RT_MAX(cbLeft / 4, 1), cbLeft)
3247	: RTRandU32Ex(cbLeft >= _8K ? _8K : 1, RT_MIN(_1M, cbLeft));
3248	size_t cbActual = 0;
3249	RTTESTI_CHECK_RC(RTFileWrite(hFile1, &pbBuf[offBuf], cbToWrite, &cbActual), VINF_SUCCESS);
3250	if (cbActual == cbToWrite)
3251	{
3252	offBuf += cbActual;
3253	RTTESTI_CHECK_MSG(RTFileTell(hFile1) == aRuns[i].offFile + offBuf,
3254	("%#RX64, expected %#RX64\n", RTFileTell(hFile1), aRuns[i].offFile + offBuf));
3255	}
3256	else
3257	{
3258	RTTestIFailed("Attempting to write %#x bytes at %#zx (%#x left), only got %#x written!\n",
3259	cbToWrite, offBuf, cbLeft, cbActual);
3260	if (cbActual)
3261	offBuf += cbActual;
3262	else
3263	pbBuf[offBuf++] = 0x11;
3264	}
3265	}
3266
3267	RTTESTI_CHECK_RC(RTFileReadAt(hFile1, aRuns[i].offFile, pbBuf, cbBuf, NULL), VINF_SUCCESS);
3268	fsPerfCheckReadBuf(__LINE__, aRuns[i].offFile, pbBuf, cbBuf, bFiller);
3269	}
3270
3271
3272	/*
3273	* Do uncached and write-thru accesses, must be page aligned.
3274	*/
3275	RTFILE ahFiles[2] = { hFileWriteThru, hFileNoCache };
3276	for (unsigned iFile = 0; iFile < RT_ELEMENTS(ahFiles); iFile++, bFiller++)
3277	{
3278	if (g_fIgnoreNoCache && ahFiles[iFile] == NIL_RTFILE)
3279	continue;
3280
3281	fsPerfFillWriteBuf(0, pbBuf, cbBuf, bFiller);
3282	fsPerfCheckReadBuf(__LINE__, 0, pbBuf, cbBuf, bFiller);
3283	RTTESTI_CHECK_RC(RTFileSeek(ahFiles[iFile], 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
3284
3285	uint32_t cbPage = PAGE_SIZE;
3286	for (size_t offBuf = 0; offBuf < cbBuf; )
3287	{
3288	uint32_t const cPagesLeft = (uint32_t)((cbBuf - offBuf) / cbPage);
3289	uint32_t const cPagesToWrite = RTRandU32Ex(1, cPagesLeft);
3290	size_t const cbToWrite = cPagesToWrite * (size_t)cbPage;
3291	size_t cbActual = 0;
3292	RTTESTI_CHECK_RC(RTFileWrite(ahFiles[iFile], &pbBuf[offBuf], cbToWrite, &cbActual), VINF_SUCCESS);
3293	if (cbActual == cbToWrite)
3294	{
3295	RTTESTI_CHECK_RC(RTFileReadAt(hFile1, offBuf, pbBuf, cbToWrite, NULL), VINF_SUCCESS);
3296	fsPerfCheckReadBuf(__LINE__, offBuf, pbBuf, cbToWrite, bFiller);
3297	offBuf += cbActual;
3298	}
3299	else
3300	{
3301	RTTestIFailed("Attempting to read %#zx bytes at %#zx, only got %#x written!\n", cbToWrite, offBuf, cbActual);
3302	if (cbActual)
3303	offBuf += cbActual;
3304	else
3305	{
3306	memset(&pbBuf[offBuf], 0x11, cbPage);
3307	offBuf += cbPage;
3308	}
3309	}
3310	}
3311
3312	RTTESTI_CHECK_RC(RTFileReadAt(ahFiles[iFile], 0, pbBuf, cbBuf, NULL), VINF_SUCCESS);
3313	fsPerfCheckReadBuf(__LINE__, 0, pbBuf, cbBuf, bFiller);
3314	}
3315
3316	/*
3317	* Check the behavior of writing zero bytes to the file _4K from the end
3318	* using native API. In the olden days zero sized write have been known
3319	* to be used to truncate a file.
3320	*/
3321	RTTESTI_CHECK_RC(RTFileSeek(hFile1, -_4K, RTFILE_SEEK_END, NULL), VINF_SUCCESS);
3322	# ifdef RT_OS_WINDOWS
3323	IO_STATUS_BLOCK Ios = RTNT_IO_STATUS_BLOCK_INITIALIZER;
3324	NTSTATUS rcNt = NtWriteFile((HANDLE)RTFileToNative(hFile1), NULL, NULL, NULL, &Ios, pbBuf, 0, NULL, NULL);
3325	RTTESTI_CHECK_MSG(rcNt == STATUS_SUCCESS, ("rcNt=%#x", rcNt));
3326	RTTESTI_CHECK(Ios.Status == STATUS_SUCCESS);
3327	RTTESTI_CHECK(Ios.Information == 0);
3328	# else
3329	ssize_t cbWritten = write((int)RTFileToNative(hFile1), pbBuf, 0);
3330	RTTESTI_CHECK(cbWritten == 0);
3331	# endif
3332	RTTESTI_CHECK_RC(RTFileRead(hFile1, pbBuf, _4K, NULL), VINF_SUCCESS);
3333	fsPerfCheckReadBuf(__LINE__, cbFile - _4K, pbBuf, _4K, pbBuf[0x8]);
3334
3335	#else
3336	RT_NOREF(hFileNoCache, hFileWriteThru);
3337	#endif
3338
3339	/*
3340	* Gather write function operation.
3341	*/
3342	#ifdef RT_OS_WINDOWS
3343	/** @todo RTFileSgWriteAt is just a RTFileWriteAt loop for windows NT. Need
3344	* to use WriteFileGather (nocache + page aligned). */
3345	#elif !defined(RT_OS_OS2) /** @todo implement RTFileSg using list i/o */
3346
3347	# ifdef UIO_MAXIOV
3348	RTSGSEG aSegs[UIO_MAXIOV];
3349	# else
3350	RTSGSEG aSegs[512];
3351	# endif
3352	RTSGBUF SgBuf;
3353	uint32_t cIncr = 1;
3354	for (uint32_t cSegs = 1; cSegs <= RT_ELEMENTS(aSegs); cSegs += cIncr, bFiller++)
3355	{
3356	size_t const cbSeg = cbBuf / cSegs;
3357	size_t const cbToWrite = cbSeg * cSegs;
3358	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
3359	{
3360	aSegs[iSeg].cbSeg = cbSeg;
3361	aSegs[iSeg].pvSeg = &pbBuf[cbToWrite - (iSeg + 1) * cbSeg];
3362	fsPerfFillWriteBuf(iSeg * cbSeg, (uint8_t *)aSegs[iSeg].pvSeg, cbSeg, bFiller);
3363	}
3364	RTSgBufInit(&SgBuf, &aSegs[0], cSegs);
3365	int rc = myFileSgWriteAt(hFile1, 0, &SgBuf, cbToWrite, NULL);
3366	if (RT_SUCCESS(rc))
3367	{
3368	RTTESTI_CHECK_RC(RTFileReadAt(hFile1, 0, pbBuf, cbToWrite, NULL), VINF_SUCCESS);
3369	fsPerfCheckReadBuf(__LINE__, 0, pbBuf, cbToWrite, bFiller);
3370	}
3371	else
3372	{
3373	RTTestIFailed("myFileSgWriteAt failed: %Rrc - cSegs=%u cbSegs=%#zx cbToWrite=%#zx", rc, cSegs, cbSeg, cbToWrite);
3374	break;
3375	}
3376	if (cSegs == 16)
3377	cIncr = 7;
3378	else if (cSegs == 16 * 7 + 16 /= 128/)
3379	cIncr = 64;
3380	}
3381
3382	/* random stuff, including zero segments. */
3383	for (uint32_t iTest = 0; iTest < 128; iTest++, bFiller++)
3384	{
3385	uint32_t cSegs = RTRandU32Ex(1, RT_ELEMENTS(aSegs));
3386	uint32_t iZeroSeg = cSegs > 10 ? RTRandU32Ex(0, cSegs - 1) : UINT32_MAX / 2;
3387	uint32_t cZeroSegs = cSegs > 10 ? RTRandU32Ex(1, RT_MIN(cSegs - iZeroSeg, 25)) : 0;
3388	size_t cbToWrite = 0;
3389	size_t cbLeft = cbBuf;
3390	uint8_t *pbCur = &pbBuf[cbBuf];
3391	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
3392	{
3393	uint32_t iAlign = RTRandU32Ex(0, 3);
3394	if (iAlign & 2) /* end is page aligned */
3395	{
3396	cbLeft -= (uintptr_t)pbCur & PAGE_OFFSET_MASK;
3397	pbCur -= (uintptr_t)pbCur & PAGE_OFFSET_MASK;
3398	}
3399
3400	size_t cbSegOthers = (cSegs - iSeg) * _8K;
3401	size_t cbSegMax = cbLeft > cbSegOthers ? cbLeft - cbSegOthers
3402	: cbLeft > cSegs ? cbLeft - cSegs
3403	: cbLeft;
3404	size_t cbSeg = cbLeft != 0 ? RTRandU32Ex(0, cbSegMax) : 0;
3405	if (iAlign & 1) /* start is page aligned */
3406	cbSeg += ((uintptr_t)pbCur - cbSeg) & PAGE_OFFSET_MASK;
3407
3408	if (iSeg - iZeroSeg < cZeroSegs)
3409	cbSeg = 0;
3410
3411	cbToWrite += cbSeg;
3412	cbLeft -= cbSeg;
3413	pbCur -= cbSeg;
3414	aSegs[iSeg].cbSeg = cbSeg;
3415	aSegs[iSeg].pvSeg = pbCur;
3416	}
3417
3418	uint64_t const offFile = cbToWrite < cbFile ? RTRandU64Ex(0, cbFile - cbToWrite) : 0;
3419	uint64_t offFill = offFile;
3420	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
3421	if (aSegs[iSeg].cbSeg)
3422	{
3423	fsPerfFillWriteBuf(offFill, (uint8_t *)aSegs[iSeg].pvSeg, aSegs[iSeg].cbSeg, bFiller);
3424	offFill += aSegs[iSeg].cbSeg;
3425	}
3426
3427	RTSgBufInit(&SgBuf, &aSegs[0], cSegs);
3428	int rc = myFileSgWriteAt(hFile1, offFile, &SgBuf, cbToWrite, NULL);
3429	if (RT_SUCCESS(rc))
3430	{
3431	RTTESTI_CHECK_RC(RTFileReadAt(hFile1, offFile, pbBuf, cbToWrite, NULL), VINF_SUCCESS);
3432	fsPerfCheckReadBuf(__LINE__, offFile, pbBuf, cbToWrite, bFiller);
3433	}
3434	else
3435	{
3436	RTTestIFailed("myFileSgWriteAt failed: %Rrc - cSegs=%#x cbToWrite=%#zx", rc, cSegs, cbToWrite);
3437	break;
3438	}
3439	}
3440
3441	#endif
3442
3443	/*
3444	* Other OS specific stuff.
3445	*/
3446	#ifdef RT_OS_WINDOWS
3447	/* Check that reading at an offset modifies the position: */
3448	RTTESTI_CHECK_RC(RTFileReadAt(hFile1, cbFile / 2, pbBuf, _4K, NULL), VINF_SUCCESS);
3449	RTTESTI_CHECK_RC(RTFileSeek(hFile1, 0, RTFILE_SEEK_END, NULL), VINF_SUCCESS);
3450	RTTESTI_CHECK(RTFileTell(hFile1) == cbFile);
3451
3452	RTNT_IO_STATUS_BLOCK_REINIT(&Ios);
3453	LARGE_INTEGER offNt;
3454	offNt.QuadPart = cbFile / 2;
3455	rcNt = NtWriteFile((HANDLE)RTFileToNative(hFile1), NULL, NULL, NULL, &Ios, pbBuf, _4K, &offNt, NULL);
3456	RTTESTI_CHECK_MSG(rcNt == STATUS_SUCCESS, ("rcNt=%#x", rcNt));
3457	RTTESTI_CHECK(Ios.Status == STATUS_SUCCESS);
3458	RTTESTI_CHECK(Ios.Information == _4K);
3459	RTTESTI_CHECK(RTFileTell(hFile1) == cbFile / 2 + _4K);
3460	#endif
3461
3462	RTMemPageFree(pbBuf, cbBuf);
3463	}
3464
3465
3466	/**
3467	* Worker for testing RTFileFlush.
3468	*/
3469	DECL_FORCE_INLINE(int) fsPerfFSyncWorker(RTFILE hFile1, uint64_t cbFile, uint8_t pbBuf, size_t cbBuf, uint64_t poffFile)
3470	{
3471	if (*poffFile + cbBuf <= cbFile)
3472	{ /* likely */ }
3473	else
3474	{
3475	RTTESTI_CHECK_RC(RTFileSeek(hFile1, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
3476	*poffFile = 0;
3477	}
3478
3479	RTTESTI_CHECK_RC_RET(RTFileWrite(hFile1, pbBuf, cbBuf, NULL), VINF_SUCCESS, rcCheck);
3480	RTTESTI_CHECK_RC_RET(RTFileFlush(hFile1), VINF_SUCCESS, rcCheck);
3481
3482	*poffFile += cbBuf;
3483	return VINF_SUCCESS;
3484	}
3485
3486
3487	void fsPerfFSync(RTFILE hFile1, uint64_t cbFile)
3488	{
3489	RTTestISub("fsync");
3490
3491	RTTESTI_CHECK_RC(RTFileFlush(hFile1), VINF_SUCCESS);
3492
3493	PROFILE_FN(RTFileFlush(hFile1), g_nsTestRun, "RTFileFlush");
3494
3495	size_t cbBuf = PAGE_SIZE;
3496	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(cbBuf);
3497	RTTESTI_CHECK_RETV(pbBuf != NULL);
3498	memset(pbBuf, 0xf4, cbBuf);
3499
3500	RTTESTI_CHECK_RC(RTFileSeek(hFile1, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
3501	uint64_t offFile = 0;
3502	PROFILE_FN(fsPerfFSyncWorker(hFile1, cbFile, pbBuf, cbBuf, &offFile), g_nsTestRun, "RTFileWrite[Page]/RTFileFlush");
3503
3504	RTMemPageFree(pbBuf, cbBuf);
3505	}
3506
3507
3508	#ifndef RT_OS_OS2
3509	/**
3510	* Worker for profiling msync.
3511	*/
3512	DECL_FORCE_INLINE(int) fsPerfMSyncWorker(uint8_t pbMapping, size_t offMapping, size_t cbFlush, size_t pcbFlushed)
3513	{
3514	uint8_t *pbCur = &pbMapping[offMapping];
3515	for (size_t offFlush = 0; offFlush < cbFlush; offFlush += PAGE_SIZE)
3516	(size_t volatile )&pbCur[offFlush + 8] = cbFlush;
3517	# ifdef RT_OS_WINDOWS
3518	RTTESTI_CHECK(FlushViewOfFile(pbCur, cbFlush));
3519	# else
3520	RTTESTI_CHECK(msync(pbCur, cbFlush, MS_SYNC) == 0);
3521	# endif
3522	if (*pcbFlushed < offMapping + cbFlush)
3523	*pcbFlushed = offMapping + cbFlush;
3524	return VINF_SUCCESS;
3525	}
3526	#endif /* !RT_OS_OS2 */
3527
3528
3529	void fsPerfMMap(RTFILE hFile1, RTFILE hFileNoCache, uint64_t cbFile)
3530	{
3531	RTTestISub("mmap");
3532	#if !defined(RT_OS_OS2)
3533	static const char * const s_apszStates[] = { "readonly", "writecopy", "readwrite" };
3534	enum { kMMap_ReadOnly = 0, kMMap_WriteCopy, kMMap_ReadWrite, kMMap_End };
3535	for (int enmState = kMMap_ReadOnly; enmState < kMMap_End; enmState++)
3536	{
3537	/*
3538	* Do the mapping.
3539	*/
3540	size_t cbMapping = (size_t)cbFile;
3541	if (cbMapping != cbFile)
3542	cbMapping = _256M;
3543	uint8_t *pbMapping;
3544
3545	# ifdef RT_OS_WINDOWS
3546	HANDLE hSection;
3547	pbMapping = NULL;
3548	for (;; cbMapping /= 2)
3549	{
3550	hSection = CreateFileMapping((HANDLE)RTFileToNative(hFile1), NULL,
3551	enmState == kMMap_ReadOnly ? PAGE_READONLY
3552	: enmState == kMMap_WriteCopy ? PAGE_WRITECOPY : PAGE_READWRITE,
3553	(uint32_t)((uint64_t)cbMapping >> 32), (uint32_t)cbMapping, NULL);
3554	DWORD dwErr1 = GetLastError();
3555	DWORD dwErr2 = 0;
3556	if (hSection != NULL)
3557	{
3558	pbMapping = (uint8_t *)MapViewOfFile(hSection,
3559	enmState == kMMap_ReadOnly ? FILE_MAP_READ
3560	: enmState == kMMap_WriteCopy ? FILE_MAP_COPY
3561	: FILE_MAP_WRITE,
3562	0, 0, cbMapping);
3563	if (pbMapping)
3564	break;
3565	dwErr2 = GetLastError();
3566	CloseHandle(hSection);
3567	}
3568	if (cbMapping <= _2M)
3569	{
3570	RTTestIFailed("%u/%s: CreateFileMapping or MapViewOfFile failed: %u, %u",
3571	enmState, s_apszStates[enmState], dwErr1, dwErr2);
3572	break;
3573	}
3574	}
3575	# else
3576	for (;; cbMapping /= 2)
3577	{
3578	pbMapping = (uint8_t *)mmap(NULL, cbMapping,
3579	enmState == kMMap_ReadOnly ? PROT_READ : PROT_READ \| PROT_WRITE,
3580	enmState == kMMap_WriteCopy ? MAP_PRIVATE : MAP_SHARED,
3581	(int)RTFileToNative(hFile1), 0);
3582	if ((void *)pbMapping != MAP_FAILED)
3583	break;
3584	if (cbMapping <= _2M)
3585	{
3586	RTTestIFailed("%u/%s: mmap failed: %s (%u)", enmState, s_apszStates[enmState], strerror(errno), errno);
3587	break;
3588	}
3589	}
3590	# endif
3591	if (cbMapping <= _2M)
3592	continue;
3593
3594	/*
3595	* Time page-ins just for fun.
3596	*/
3597	size_t const cPages = cbMapping >> PAGE_SHIFT;
3598	size_t uDummy = 0;
3599	uint64_t ns = RTTimeNanoTS();
3600	for (size_t iPage = 0; iPage < cPages; iPage++)
3601	uDummy += ASMAtomicReadU8(&pbMapping[iPage << PAGE_SHIFT]);
3602	ns = RTTimeNanoTS() - ns;
3603	RTTestIValueF(ns / cPages, RTTESTUNIT_NS_PER_OCCURRENCE, "page-in %s", s_apszStates[enmState]);
3604
3605	/* Check the content. */
3606	fsPerfCheckReadBuf(__LINE__, 0, pbMapping, cbMapping);
3607
3608	if (enmState != kMMap_ReadOnly)
3609	{
3610	/* Write stuff to the first two megabytes. In the COW case, we'll detect
3611	corruption of shared data during content checking of the RW iterations. */
3612	fsPerfFillWriteBuf(0, pbMapping, _2M, 0xf7);
3613	if (enmState == kMMap_ReadWrite)
3614	{
3615	/* For RW we can try read back from the file handle and check if we get
3616	a match there first. */
3617	uint8_t abBuf[_4K];
3618	for (uint32_t off = 0; off < _2M; off += sizeof(abBuf))
3619	{
3620	RTTESTI_CHECK_RC(RTFileReadAt(hFile1, off, abBuf, sizeof(abBuf), NULL), VINF_SUCCESS);
3621	fsPerfCheckReadBuf(__LINE__, off, abBuf, sizeof(abBuf), 0xf7);
3622	}
3623	# ifdef RT_OS_WINDOWS
3624	RTTESTI_CHECK(FlushViewOfFile(pbMapping, _2M));
3625	# else
3626	RTTESTI_CHECK(msync(pbMapping, _2M, MS_SYNC) == 0);
3627	# endif
3628
3629	/*
3630	* Time modifying and flushing a few different number of pages.
3631	*/
3632	static size_t const s_acbFlush[] = { PAGE_SIZE, PAGE_SIZE * 2, PAGE_SIZE * 3, PAGE_SIZE * 8, PAGE_SIZE * 16, _2M };
3633	for (unsigned iFlushSize = 0 ; iFlushSize < RT_ELEMENTS(s_acbFlush); iFlushSize++)
3634	{
3635	size_t const cbFlush = s_acbFlush[iFlushSize];
3636	if (cbFlush > cbMapping)
3637	continue;
3638
3639	char szDesc[80];
3640	RTStrPrintf(szDesc, sizeof(szDesc), "touch/flush/%zu", cbFlush);
3641	size_t const cFlushes = cbMapping / cbFlush;
3642	size_t const cbMappingUsed = cFlushes * cbFlush;
3643	size_t cbFlushed = 0;
3644	PROFILE_FN(fsPerfMSyncWorker(pbMapping, (iIteration * cbFlush) % cbMappingUsed, cbFlush, &cbFlushed),
3645	g_nsTestRun, szDesc);
3646
3647	/*
3648	* Check that all the changes made it thru to the file:
3649	*/
3650	if (!g_fIgnoreNoCache \|\| hFileNoCache != NIL_RTFILE)
3651	{
3652	size_t cbBuf = _2M;
3653	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(cbBuf);
3654	if (!pbBuf)
3655	{
3656	cbBuf = _4K;
3657	pbBuf = (uint8_t *)RTMemPageAlloc(cbBuf);
3658	}
3659	RTTESTI_CHECK(pbBuf != NULL);
3660	if (pbBuf)
3661	{
3662	RTTESTI_CHECK_RC(RTFileSeek(hFileNoCache, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
3663	size_t const cbToCheck = RT_MIN(cFlushes * cbFlush, cbFlushed);
3664	unsigned cErrors = 0;
3665	for (size_t offBuf = 0; cErrors < 32 && offBuf < cbToCheck; offBuf += cbBuf)
3666	{
3667	size_t cbToRead = RT_MIN(cbBuf, cbToCheck - offBuf);
3668	RTTESTI_CHECK_RC(RTFileRead(hFileNoCache, pbBuf, cbToRead, NULL), VINF_SUCCESS);
3669
3670	for (size_t offFlush = 0; offFlush < cbToRead; offFlush += PAGE_SIZE)
3671	if ((size_t volatile )&pbBuf[offFlush + 8] != cbFlush)
3672	{
3673	RTTestIFailed("Flush issue at offset #%zx: %#zx, expected %#zx (cbFlush=%#zx, %#RX64)",
3674	offBuf + offFlush + 8, (size_t volatile )&pbBuf[offFlush + 8],
3675	cbFlush, cbFlush, (uint64_t volatile )&pbBuf[offFlush]);
3676	if (++cErrors > 32)
3677	break;
3678	}
3679	}
3680	RTMemPageFree(pbBuf, cbBuf);
3681	}
3682	}
3683	}
3684
3685	# if 0 /* not needed, very very slow */
3686	/*
3687	* Restore the file to 0xf6 state for the next test.
3688	*/
3689	RTTestIPrintf(RTTESTLVL_ALWAYS, "Restoring content...\n");
3690	fsPerfFillWriteBuf(0, pbMapping, cbMapping, 0xf6);
3691	# ifdef RT_OS_WINDOWS
3692	RTTESTI_CHECK(FlushViewOfFile(pbMapping, cbMapping));
3693	# else
3694	RTTESTI_CHECK(msync(pbMapping, cbMapping, MS_SYNC) == 0);
3695	# endif
3696	RTTestIPrintf(RTTESTLVL_ALWAYS, "... done\n");
3697	# endif
3698	}
3699	}
3700
3701	/*
3702	* Observe how regular writes affects a read-only or readwrite mapping.
3703	* These should ideally be immediately visible in the mapping, at least
3704	* when not performed thru an no-cache handle.
3705	*/
3706	if (enmState == kMMap_ReadOnly \|\| enmState == kMMap_ReadWrite)
3707	{
3708	size_t cbBuf = RT_MIN(_2M, cbMapping / 2);
3709	uint8_t pbBuf = (uint8_t )RTMemPageAlloc(cbBuf);
3710	if (!pbBuf)
3711	{
3712	cbBuf = _4K;
3713	pbBuf = (uint8_t *)RTMemPageAlloc(cbBuf);
3714	}
3715	RTTESTI_CHECK(pbBuf != NULL);
3716	if (pbBuf)
3717	{
3718	/* Do a number of random writes to the file (using hFile1).
3719	Immediately undoing them. */
3720	for (uint32_t i = 0; i < 128; i++)
3721	{
3722	/* Generate a randomly sized write at a random location, making
3723	sure it differs from whatever is there already before writing. */
3724	uint32_t const cbToWrite = RTRandU32Ex(1, (uint32_t)cbBuf);
3725	uint64_t const offToWrite = RTRandU64Ex(0, cbMapping - cbToWrite);
3726
3727	fsPerfFillWriteBuf(offToWrite, pbBuf, cbToWrite, 0xf8);
3728	pbBuf[0] = ~pbBuf[0];
3729	if (cbToWrite > 1)
3730	pbBuf[cbToWrite - 1] = ~pbBuf[cbToWrite - 1];
3731	RTTESTI_CHECK_RC(RTFileWriteAt(hFile1, offToWrite, pbBuf, cbToWrite, NULL), VINF_SUCCESS);
3732
3733	/* Check the mapping. */
3734	if (memcmp(&pbMapping[(size_t)offToWrite], pbBuf, cbToWrite) != 0)
3735	{
3736	RTTestIFailed("Write #%u @ %#RX64 LB %#x was not reflected in the mapping!\n", i, offToWrite, cbToWrite);
3737	}
3738
3739	/* Restore */
3740	fsPerfFillWriteBuf(offToWrite, pbBuf, cbToWrite, 0xf6);
3741	RTTESTI_CHECK_RC(RTFileWriteAt(hFile1, offToWrite, pbBuf, cbToWrite, NULL), VINF_SUCCESS);
3742	}
3743
3744	RTMemPageFree(pbBuf, cbBuf);
3745	}
3746	}
3747
3748	/*
3749	* Unmap it.
3750	*/
3751	# ifdef RT_OS_WINDOWS
3752	RTTESTI_CHECK(UnmapViewOfFile(pbMapping));
3753	RTTESTI_CHECK(CloseHandle(hSection));
3754	# else
3755	RTTESTI_CHECK(munmap(pbMapping, cbMapping) == 0);
3756	# endif
3757	}
3758
3759	/*
3760	* Memory mappings without open handles (pretty common).
3761	*/
3762	for (uint32_t i = 0; i < 32; i++)
3763	{
3764	/* Create a new file, 256 KB in size, and fill it with random bytes.
3765	Try uncached access if we can to force the page-in to do actual reads. */
3766	char szFile2[RTPATH_MAX + 32];
3767	memcpy(szFile2, g_szDir, g_cchDir);
3768	RTStrPrintf(&szFile2[g_cchDir], sizeof(szFile2) - g_cchDir, "mmap-%u.noh", i);
3769	RTFILE hFile2 = NIL_RTFILE;
3770	int rc = (i & 3) == 3 ? VERR_TRY_AGAIN
3771	: RTFileOpen(&hFile2, szFile2, RTFILE_O_READWRITE \| RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_NO_CACHE);
3772	if (RT_FAILURE(rc))
3773	{
3774	RTTESTI_CHECK_RC_BREAK(RTFileOpen(&hFile2, szFile2, RTFILE_O_READWRITE \| RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE),
3775	VINF_SUCCESS);
3776	}
3777
3778	static char s_abContent[256*1024];
3779	RTRandBytes(s_abContent, sizeof(s_abContent));
3780	RTTESTI_CHECK_RC(RTFileWrite(hFile2, s_abContent, sizeof(s_abContent), NULL), VINF_SUCCESS);
3781	RTTESTI_CHECK_RC(RTFileClose(hFile2), VINF_SUCCESS);
3782
3783	/* Reopen the file with normal caching. Every second time, we also
3784	does a read-only open of it to confuse matters. */
3785	RTFILE hFile3 = NIL_RTFILE;
3786	if ((i & 3) == 3)
3787	RTTESTI_CHECK_RC(RTFileOpen(&hFile3, szFile2, RTFILE_O_READ \| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE), VINF_SUCCESS);
3788	hFile2 = NIL_RTFILE;
3789	RTTESTI_CHECK_RC_BREAK(RTFileOpen(&hFile2, szFile2, RTFILE_O_READWRITE \| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE),
3790	VINF_SUCCESS);
3791	if ((i & 3) == 1)
3792	RTTESTI_CHECK_RC(RTFileOpen(&hFile3, szFile2, RTFILE_O_READ \| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE), VINF_SUCCESS);
3793
3794	/* Memory map it read-write (no COW). */
3795	#ifdef RT_OS_WINDOWS
3796	HANDLE hSection = CreateFileMapping((HANDLE)RTFileToNative(hFile2), NULL, PAGE_READWRITE, 0, sizeof(s_abContent), NULL);
3797	RTTESTI_CHECK_MSG(hSection != NULL, ("last error %u\n", GetLastError));
3798	uint8_t pbMapping = (uint8_t )MapViewOfFile(hSection, FILE_MAP_WRITE, 0, 0, sizeof(s_abContent));
3799	RTTESTI_CHECK_MSG(pbMapping != NULL, ("last error %u\n", GetLastError));
3800	RTTESTI_CHECK_MSG(CloseHandle(hSection), ("last error %u\n", GetLastError));
3801	# else
3802	uint8_t pbMapping = (uint8_t )mmap(NULL, sizeof(s_abContent), PROT_READ \| PROT_WRITE, MAP_SHARED,
3803	(int)RTFileToNative(hFile2), 0);
3804	if ((void *)pbMapping == MAP_FAILED)
3805	pbMapping = NULL;
3806	RTTESTI_CHECK_MSG(pbMapping != NULL, ("errno=%s (%d)\n", strerror(errno), errno));
3807	# endif
3808
3809	/* Close the file handles. */
3810	if ((i & 7) == 7)
3811	{
3812	RTTESTI_CHECK_RC(RTFileClose(hFile3), VINF_SUCCESS);
3813	hFile3 = NIL_RTFILE;
3814	}
3815	RTTESTI_CHECK_RC(RTFileClose(hFile2), VINF_SUCCESS);
3816	if ((i & 7) == 5)
3817	{
3818	RTTESTI_CHECK_RC(RTFileClose(hFile3), VINF_SUCCESS);
3819	hFile3 = NIL_RTFILE;
3820	}
3821	if (pbMapping)
3822	{
3823	RTThreadSleep(2); /* fudge for cleanup/whatever */
3824
3825	/* Page in the mapping by comparing with the content we wrote above. */
3826	RTTESTI_CHECK(memcmp(pbMapping, s_abContent, sizeof(s_abContent)) == 0);
3827
3828	/* Now dirty everything by inverting everything. */
3829	size_t puCur = (size_t )pbMapping;
3830	size_t cLeft = sizeof(s_abContent) / sizeof(*puCur);
3831	while (cLeft-- > 0)
3832	{
3833	puCur = ~puCur;
3834	puCur++;
3835	}
3836
3837	/* Sync it all. */
3838	# ifdef RT_OS_WINDOWS
3839	RTTESTI_CHECK(FlushViewOfFile(pbMapping, sizeof(s_abContent)));
3840	# else
3841	RTTESTI_CHECK(msync(pbMapping, sizeof(s_abContent), MS_SYNC) == 0);
3842	# endif
3843
3844	/* Unmap it. */
3845	# ifdef RT_OS_WINDOWS
3846	RTTESTI_CHECK(UnmapViewOfFile(pbMapping));
3847	# else
3848	RTTESTI_CHECK(munmap(pbMapping, sizeof(s_abContent)) == 0);
3849	# endif
3850	}
3851
3852	if (hFile3 != NIL_RTFILE)
3853	RTTESTI_CHECK_RC(RTFileClose(hFile3), VINF_SUCCESS);
3854	RTTESTI_CHECK_RC(RTFileDelete(szFile2), VINF_SUCCESS);
3855	}
3856
3857
3858	#else
3859	RTTestSkipped(g_hTest, "not supported/implemented");
3860	RT_NOREF(hFile1, hFileNoCache, cbFile);
3861	#endif
3862	}
3863
3864
3865	/**
3866	* This does the read, write and seek tests.
3867	*/
3868	void fsPerfIo(void)
3869	{
3870	RTTestISub("I/O");
3871
3872	/*
3873	* Determin the size of the test file.
3874	*/
3875	g_szDir[g_cchDir] = '\0';
3876	RTFOFF cbFree = 0;
3877	RTTESTI_CHECK_RC_RETV(RTFsQuerySizes(g_szDir, NULL, &cbFree, NULL, NULL), VINF_SUCCESS);
3878	uint64_t cbFile = g_cbIoFile;
3879	if (cbFile + _16M < (uint64_t)cbFree)
3880	cbFile = RT_ALIGN_64(cbFile, _64K);
3881	else if (cbFree < _32M)
3882	{
3883	RTTestSkipped(g_hTest, "Insufficent free space: %'RU64 bytes, requires >= 32MB", cbFree);
3884	return;
3885	}
3886	else
3887	{
3888	cbFile = cbFree - (cbFree > _128M ? _64M : _16M);
3889	cbFile = RT_ALIGN_64(cbFile, _64K);
3890	RTTestIPrintf(RTTESTLVL_ALWAYS, "Adjusted file size to %'RU64 bytes, due to %'RU64 bytes free.\n", cbFile, cbFree);
3891	}
3892	if (cbFile < _64K)
3893	{
3894	RTTestSkipped(g_hTest, "Specified test file size too small: %'RU64 bytes, requires >= 64KB", cbFile);
3895	return;
3896	}
3897
3898	/*
3899	* Create a cbFile sized test file.
3900	*/
3901	RTFILE hFile1;
3902	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file21")),
3903	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_READWRITE), VINF_SUCCESS);
3904	RTFILE hFileNoCache;
3905	if (!g_fIgnoreNoCache)
3906	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFileNoCache, g_szDir,
3907	RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READWRITE \| RTFILE_O_NO_CACHE),
3908	VINF_SUCCESS);
3909	else
3910	{
3911	int rc = RTFileOpen(&hFileNoCache, g_szDir, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READWRITE \| RTFILE_O_NO_CACHE);
3912	if (RT_FAILURE(rc))
3913	{
3914	RTTestIPrintf(RTTESTLVL_ALWAYS, "Unable to open I/O file with non-cache flag (%Rrc), skipping related tests.\n", rc);
3915	hFileNoCache = NIL_RTFILE;
3916	}
3917	}
3918	RTFILE hFileWriteThru;
3919	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFileWriteThru, g_szDir,
3920	RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READWRITE \| RTFILE_O_WRITE_THROUGH),
3921	VINF_SUCCESS);
3922
3923	uint8_t *pbFree = NULL;
3924	int rc = fsPerfIoPrepFile(hFile1, cbFile, &pbFree);
3925	RTMemFree(pbFree);
3926	if (RT_SUCCESS(rc))
3927	{
3928	/*
3929	* Do the testing & profiling.
3930	*/
3931	if (g_fSeek)
3932	fsPerfIoSeek(hFile1, cbFile);
3933
3934	if (g_fReadTests)
3935	fsPerfRead(hFile1, hFileNoCache, cbFile);
3936	if (g_fReadPerf)
3937	for (unsigned i = 0; i < g_cIoBlocks; i++)
3938	fsPerfIoReadBlockSize(hFile1, cbFile, g_acbIoBlocks[i]);
3939	#ifdef FSPERF_TEST_SENDFILE
3940	if (g_fSendFile)
3941	fsPerfSendFile(hFile1, cbFile);
3942	#endif
3943	#ifdef RT_OS_LINUX
3944	if (g_fSplice)
3945	fsPerfSpliceToPipe(hFile1, cbFile);
3946	#endif
3947	if (g_fMMap)
3948	fsPerfMMap(hFile1, hFileNoCache, cbFile);
3949
3950	/* This is destructive to the file content. */
3951	if (g_fWriteTests)
3952	fsPerfWrite(hFile1, hFileNoCache, hFileWriteThru, cbFile);
3953	if (g_fWritePerf)
3954	for (unsigned i = 0; i < g_cIoBlocks; i++)
3955	fsPerfIoWriteBlockSize(hFile1, cbFile, g_acbIoBlocks[i]);
3956	#ifdef RT_OS_LINUX
3957	if (g_fSplice)
3958	fsPerfSpliceToFile(hFile1, cbFile);
3959	#endif
3960	if (g_fFSync)
3961	fsPerfFSync(hFile1, cbFile);
3962	}
3963
3964	RTTESTI_CHECK_RC(RTFileSetSize(hFile1, 0), VINF_SUCCESS);
3965	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
3966	if (hFileNoCache != NIL_RTFILE \|\| !g_fIgnoreNoCache)
3967	RTTESTI_CHECK_RC(RTFileClose(hFileNoCache), VINF_SUCCESS);
3968	RTTESTI_CHECK_RC(RTFileClose(hFileWriteThru), VINF_SUCCESS);
3969	RTTESTI_CHECK_RC(RTFileDelete(g_szDir), VINF_SUCCESS);
3970	}
3971
3972
3973	DECL_FORCE_INLINE(int) fsPerfCopyWorker1(const char pszSrc, const char pszDst)
3974	{
3975	RTFileDelete(pszDst);
3976	return RTFileCopy(pszSrc, pszDst);
3977	}
3978
3979
3980	#ifdef RT_OS_LINUX
3981	DECL_FORCE_INLINE(int) fsPerfCopyWorkerSendFile(RTFILE hFile1, RTFILE hFile2, size_t cbFile)
3982	{
3983	RTTESTI_CHECK_RC_RET(RTFileSeek(hFile2, 0, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS, rcCheck);
3984
3985	loff_t off = 0;
3986	ssize_t cbSent = sendfile((int)RTFileToNative(hFile2), (int)RTFileToNative(hFile1), &off, cbFile);
3987	if (cbSent > 0 && (size_t)cbSent == cbFile)
3988	return 0;
3989
3990	int rc = VERR_GENERAL_FAILURE;
3991	if (cbSent < 0)
3992	{
3993	rc = RTErrConvertFromErrno(errno);
3994	RTTestIFailed("sendfile(file,file,NULL,%#zx) failed (%zd): %d (%Rrc)", cbFile, cbSent, errno, rc);
3995	}
3996	else
3997	RTTestIFailed("sendfile(file,file,NULL,%#zx) returned %#zx, expected %#zx (diff %zd)",
3998	cbFile, cbSent, cbFile, cbSent - cbFile);
3999	return rc;
4000	}
4001	#endif /* RT_OS_LINUX */
4002
4003
4004	static void fsPerfCopy(void)
4005	{
4006	RTTestISub("copy");
4007
4008	/*
4009	* Non-existing files.
4010	*/
4011	RTTESTI_CHECK_RC(RTFileCopy(InEmptyDir(RT_STR_TUPLE("no-such-file")),
4012	InDir2(RT_STR_TUPLE("whatever"))), VERR_FILE_NOT_FOUND);
4013	RTTESTI_CHECK_RC(RTFileCopy(InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file")),
4014	InDir2(RT_STR_TUPLE("no-such-file"))), FSPERF_VERR_PATH_NOT_FOUND);
4015	RTTESTI_CHECK_RC(RTFileCopy(InDir(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file")),
4016	InDir2(RT_STR_TUPLE("whatever"))), VERR_PATH_NOT_FOUND);
4017
4018	RTTESTI_CHECK_RC(RTFileCopy(InDir(RT_STR_TUPLE("known-file")),
4019	InEmptyDir(RT_STR_TUPLE("no-such-dir" RTPATH_SLASH_STR "no-such-file"))), FSPERF_VERR_PATH_NOT_FOUND);
4020	RTTESTI_CHECK_RC(RTFileCopy(InDir(RT_STR_TUPLE("known-file")),
4021	InDir2(RT_STR_TUPLE("known-file" RTPATH_SLASH_STR "no-such-file"))), VERR_PATH_NOT_FOUND);
4022
4023	/*
4024	* Determin the size of the test file.
4025	* We want to be able to make 1 copy of it.
4026	*/
4027	g_szDir[g_cchDir] = '\0';
4028	RTFOFF cbFree = 0;
4029	RTTESTI_CHECK_RC_RETV(RTFsQuerySizes(g_szDir, NULL, &cbFree, NULL, NULL), VINF_SUCCESS);
4030	uint64_t cbFile = g_cbIoFile;
4031	if (cbFile + _16M < (uint64_t)cbFree)
4032	cbFile = RT_ALIGN_64(cbFile, _64K);
4033	else if (cbFree < _32M)
4034	{
4035	RTTestSkipped(g_hTest, "Insufficent free space: %'RU64 bytes, requires >= 32MB", cbFree);
4036	return;
4037	}
4038	else
4039	{
4040	cbFile = cbFree - (cbFree > _128M ? _64M : _16M);
4041	cbFile = RT_ALIGN_64(cbFile, _64K);
4042	RTTestIPrintf(RTTESTLVL_ALWAYS, "Adjusted file size to %'RU64 bytes, due to %'RU64 bytes free.\n", cbFile, cbFree);
4043	}
4044	if (cbFile < _512K * 2)
4045	{
4046	RTTestSkipped(g_hTest, "Specified test file size too small: %'RU64 bytes, requires >= 1MB", cbFile);
4047	return;
4048	}
4049	cbFile /= 2;
4050
4051	/*
4052	* Create a cbFile sized test file.
4053	*/
4054	RTFILE hFile1;
4055	RTTESTI_CHECK_RC_RETV(RTFileOpen(&hFile1, InDir(RT_STR_TUPLE("file22")),
4056	RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_READWRITE), VINF_SUCCESS);
4057	uint8_t *pbFree = NULL;
4058	int rc = fsPerfIoPrepFile(hFile1, cbFile, &pbFree);
4059	RTMemFree(pbFree);
4060	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
4061	if (RT_SUCCESS(rc))
4062	{
4063	/*
4064	* Make copies.
4065	*/
4066	/* plain */
4067	RTFileDelete(InDir2(RT_STR_TUPLE("file23")));
4068	RTTESTI_CHECK_RC(RTFileCopy(g_szDir, g_szDir2), VINF_SUCCESS);
4069	RTTESTI_CHECK_RC(RTFileCopy(g_szDir, g_szDir2), VERR_ALREADY_EXISTS);
4070	RTTESTI_CHECK_RC(RTFileCompare(g_szDir, g_szDir2), VINF_SUCCESS);
4071
4072	/* by handle */
4073	hFile1 = NIL_RTFILE;
4074	RTTESTI_CHECK_RC(RTFileOpen(&hFile1, g_szDir, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), VINF_SUCCESS);
4075	RTFILE hFile2 = NIL_RTFILE;
4076	RTTESTI_CHECK_RC(RTFileOpen(&hFile2, g_szDir2, RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
4077	RTTESTI_CHECK_RC(RTFileCopyByHandles(hFile1, hFile2), VINF_SUCCESS);
4078	RTTESTI_CHECK_RC(RTFileClose(hFile2), VINF_SUCCESS);
4079	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
4080	RTTESTI_CHECK_RC(RTFileCompare(g_szDir, g_szDir2), VINF_SUCCESS);
4081
4082	/* copy part */
4083	hFile1 = NIL_RTFILE;
4084	RTTESTI_CHECK_RC(RTFileOpen(&hFile1, g_szDir, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), VINF_SUCCESS);
4085	hFile2 = NIL_RTFILE;
4086	RTTESTI_CHECK_RC(RTFileOpen(&hFile2, g_szDir2, RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
4087	RTTESTI_CHECK_RC(RTFileCopyPart(hFile1, 0, hFile2, 0, cbFile / 2, 0, NULL), VINF_SUCCESS);
4088	RTTESTI_CHECK_RC(RTFileCopyPart(hFile1, cbFile / 2, hFile2, cbFile / 2, cbFile - cbFile / 2, 0, NULL), VINF_SUCCESS);
4089	RTTESTI_CHECK_RC(RTFileClose(hFile2), VINF_SUCCESS);
4090	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
4091	RTTESTI_CHECK_RC(RTFileCompare(g_szDir, g_szDir2), VINF_SUCCESS);
4092
4093	#ifdef RT_OS_LINUX
4094	/*
4095	* On linux we can also use sendfile between two files, except for 2.5.x to 2.6.33.
4096	*/
4097	uint64_t const cbFileMax = RT_MIN(cbFile, UINT32_C(0x7ffff000));
4098	char szRelease[64];
4099	RTSystemQueryOSInfo(RTSYSOSINFO_RELEASE, szRelease, sizeof(szRelease));
4100	bool const fSendFileBetweenFiles = RTStrVersionCompare(szRelease, "2.5.0") < 0
4101	\|\| RTStrVersionCompare(szRelease, "2.6.33") >= 0;
4102	if (fSendFileBetweenFiles)
4103	{
4104	/* Copy the whole file: */
4105	hFile1 = NIL_RTFILE;
4106	RTTESTI_CHECK_RC(RTFileOpen(&hFile1, g_szDir, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), VINF_SUCCESS);
4107	RTFileDelete(g_szDir2);
4108	hFile2 = NIL_RTFILE;
4109	RTTESTI_CHECK_RC(RTFileOpen(&hFile2, g_szDir2, RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
4110	ssize_t cbSent = sendfile((int)RTFileToNative(hFile2), (int)RTFileToNative(hFile1), NULL, cbFile);
4111	if (cbSent < 0)
4112	RTTestIFailed("sendfile(file,file,NULL,%#zx) failed (%zd): %d (%Rrc)",
4113	cbFile, cbSent, errno, RTErrConvertFromErrno(errno));
4114	else if ((size_t)cbSent != cbFileMax)
4115	RTTestIFailed("sendfile(file,file,NULL,%#zx) returned %#zx, expected %#zx (diff %zd)",
4116	cbFile, cbSent, cbFileMax, cbSent - cbFileMax);
4117	RTTESTI_CHECK_RC(RTFileClose(hFile2), VINF_SUCCESS);
4118	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
4119	RTTESTI_CHECK_RC(RTFileCompare(g_szDir, g_szDir2), VINF_SUCCESS);
4120
4121	/* Try copy a little bit too much: */
4122	if (cbFile == cbFileMax)
4123	{
4124	hFile1 = NIL_RTFILE;
4125	RTTESTI_CHECK_RC(RTFileOpen(&hFile1, g_szDir, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), VINF_SUCCESS);
4126	RTFileDelete(g_szDir2);
4127	hFile2 = NIL_RTFILE;
4128	RTTESTI_CHECK_RC(RTFileOpen(&hFile2, g_szDir2, RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
4129	size_t cbToCopy = cbFile + RTRandU32Ex(1, _64M);
4130	cbSent = sendfile((int)RTFileToNative(hFile2), (int)RTFileToNative(hFile1), NULL, cbToCopy);
4131	if (cbSent < 0)
4132	RTTestIFailed("sendfile(file,file,NULL,%#zx) failed (%zd): %d (%Rrc)",
4133	cbToCopy, cbSent, errno, RTErrConvertFromErrno(errno));
4134	else if ((size_t)cbSent != cbFile)
4135	RTTestIFailed("sendfile(file,file,NULL,%#zx) returned %#zx, expected %#zx (diff %zd)",
4136	cbToCopy, cbSent, cbFile, cbSent - cbFile);
4137	RTTESTI_CHECK_RC(RTFileClose(hFile2), VINF_SUCCESS);
4138	RTTESTI_CHECK_RC(RTFileCompare(g_szDir, g_szDir2), VINF_SUCCESS);
4139	}
4140
4141	/* Do partial copy: */
4142	hFile2 = NIL_RTFILE;
4143	RTTESTI_CHECK_RC(RTFileOpen(&hFile2, g_szDir2, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
4144	for (uint32_t i = 0; i < 64; i++)
4145	{
4146	size_t cbToCopy = RTRandU32Ex(0, cbFileMax - 1);
4147	uint32_t const offFile = RTRandU32Ex(1, (uint64_t)RT_MIN(cbFileMax - cbToCopy, UINT32_MAX));
4148	RTTESTI_CHECK_RC_BREAK(RTFileSeek(hFile2, offFile, RTFILE_SEEK_BEGIN, NULL), VINF_SUCCESS);
4149	loff_t offFile2 = offFile;
4150	cbSent = sendfile((int)RTFileToNative(hFile2), (int)RTFileToNative(hFile1), &offFile2, cbToCopy);
4151	if (cbSent < 0)
4152	RTTestIFailed("sendfile(file,file,%#x,%#zx) failed (%zd): %d (%Rrc)",
4153	offFile, cbToCopy, cbSent, errno, RTErrConvertFromErrno(errno));
4154	else if ((size_t)cbSent != cbToCopy)
4155	RTTestIFailed("sendfile(file,file,%#x,%#zx) returned %#zx, expected %#zx (diff %zd)",
4156	offFile, cbToCopy, cbSent, cbToCopy, cbSent - cbToCopy);
4157	else if (offFile2 != (loff_t)(offFile + cbToCopy))
4158	RTTestIFailed("sendfile(file,file,%#x,%#zx) returned %#zx + off=%#RX64, expected off %#x",
4159	offFile, cbToCopy, cbSent, offFile2, offFile + cbToCopy);
4160	}
4161	RTTESTI_CHECK_RC(RTFileClose(hFile2), VINF_SUCCESS);
4162	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
4163	RTTESTI_CHECK_RC(RTFileCompare(g_szDir, g_szDir2), VINF_SUCCESS);
4164	}
4165	#endif
4166
4167	/*
4168	* Do some benchmarking.
4169	*/
4170	#define PROFILE_COPY_FN(a_szOperation, a_fnCall) \
4171	do \
4172	{ \
4173	/* Estimate how many iterations we need to fill up the given timeslot: */ \
4174	fsPerfYield(); \
4175	uint64_t nsStart = RTTimeNanoTS(); \
4176	uint64_t ns; \
4177	do \
4178	ns = RTTimeNanoTS(); \
4179	while (ns == nsStart); \
4180	nsStart = ns; \
4181	\
4182	uint64_t iIteration = 0; \
4183	do \
4184	{ \
4185	RTTESTI_CHECK_RC(a_fnCall, VINF_SUCCESS); \
4186	iIteration++; \
4187	ns = RTTimeNanoTS() - nsStart; \
4188	} while (ns < RT_NS_10MS); \
4189	ns /= iIteration; \
4190	if (ns > g_nsPerNanoTSCall + 32) \
4191	ns -= g_nsPerNanoTSCall; \
4192	uint64_t cIterations = g_nsTestRun / ns; \
4193	if (cIterations < 2) \
4194	cIterations = 2; \
4195	else if (cIterations & 1) \
4196	cIterations++; \
4197	\
4198	/* Do the actual profiling: */ \
4199	iIteration = 0; \
4200	fsPerfYield(); \
4201	nsStart = RTTimeNanoTS(); \
4202	for (uint32_t iAdjust = 0; iAdjust < 4; iAdjust++) \
4203	{ \
4204	for (; iIteration < cIterations; iIteration++)\
4205	RTTESTI_CHECK_RC(a_fnCall, VINF_SUCCESS); \
4206	ns = RTTimeNanoTS() - nsStart;\
4207	if (ns >= g_nsTestRun - (g_nsTestRun / 10)) \
4208	break; \
4209	cIterations += cIterations / 4; \
4210	if (cIterations & 1) \
4211	cIterations++; \
4212	nsStart += g_nsPerNanoTSCall; \
4213	} \
4214	RTTestIValueF(ns / iIteration, \
4215	RTTESTUNIT_NS_PER_OCCURRENCE, a_szOperation " latency"); \
4216	RTTestIValueF((uint64_t)((uint64_t)iIteration * cbFile / ((double)ns / RT_NS_1SEC)), \
4217	RTTESTUNIT_BYTES_PER_SEC, a_szOperation " throughput"); \
4218	RTTestIValueF((uint64_t)iIteration * cbFile, \
4219	RTTESTUNIT_BYTES, a_szOperation " bytes"); \
4220	RTTestIValueF(iIteration, \
4221	RTTESTUNIT_OCCURRENCES, a_szOperation " iterations"); \
4222	if (g_fShowDuration) \
4223	RTTestIValueF(ns, RTTESTUNIT_NS, a_szOperation " duration"); \
4224	} while (0)
4225
4226	PROFILE_COPY_FN("RTFileCopy/Replace", fsPerfCopyWorker1(g_szDir, g_szDir2));
4227
4228	hFile1 = NIL_RTFILE;
4229	RTTESTI_CHECK_RC(RTFileOpen(&hFile1, g_szDir, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), VINF_SUCCESS);
4230	RTFileDelete(g_szDir2);
4231	hFile2 = NIL_RTFILE;
4232	RTTESTI_CHECK_RC(RTFileOpen(&hFile2, g_szDir2, RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
4233	PROFILE_COPY_FN("RTFileCopyByHandles/Overwrite", RTFileCopyByHandles(hFile1, hFile2));
4234	RTTESTI_CHECK_RC(RTFileClose(hFile2), VINF_SUCCESS);
4235	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
4236
4237	/* We could benchmark RTFileCopyPart with various block sizes and whatnot...
4238	But it's currently well covered by the two previous operations. */
4239
4240	#ifdef RT_OS_LINUX
4241	if (fSendFileBetweenFiles)
4242	{
4243	hFile1 = NIL_RTFILE;
4244	RTTESTI_CHECK_RC(RTFileOpen(&hFile1, g_szDir, RTFILE_O_OPEN \| RTFILE_O_DENY_NONE \| RTFILE_O_READ), VINF_SUCCESS);
4245	RTFileDelete(g_szDir2);
4246	hFile2 = NIL_RTFILE;
4247	RTTESTI_CHECK_RC(RTFileOpen(&hFile2, g_szDir2, RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE \| RTFILE_O_WRITE), VINF_SUCCESS);
4248	PROFILE_COPY_FN("sendfile/overwrite", fsPerfCopyWorkerSendFile(hFile1, hFile2, cbFileMax));
4249	RTTESTI_CHECK_RC(RTFileClose(hFile2), VINF_SUCCESS);
4250	RTTESTI_CHECK_RC(RTFileClose(hFile1), VINF_SUCCESS);
4251	}
4252	#endif
4253	}
4254
4255	/*
4256	* Clean up.
4257	*/
4258	RTFileDelete(InDir2(RT_STR_TUPLE("file22c1")));
4259	RTFileDelete(InDir2(RT_STR_TUPLE("file22c2")));
4260	RTFileDelete(InDir2(RT_STR_TUPLE("file22c3")));
4261	RTTESTI_CHECK_RC(RTFileDelete(g_szDir), VINF_SUCCESS);
4262	}
4263
4264
4265	/**
4266	* Display the usage to @a pStrm.
4267	*/
4268	static void Usage(PRTSTREAM pStrm)
4269	{
4270	char szExec[RTPATH_MAX];
4271	RTStrmPrintf(pStrm, "usage: %s <-d <testdir>> [options]\n",
4272	RTPathFilename(RTProcGetExecutablePath(szExec, sizeof(szExec))));
4273	RTStrmPrintf(pStrm, "\n");
4274	RTStrmPrintf(pStrm, "options: \n");
4275
4276	for (unsigned i = 0; i < RT_ELEMENTS(g_aCmdOptions); i++)
4277	{
4278	char szHelp[80];
4279	const char *pszHelp;
4280	switch (g_aCmdOptions[i].iShort)
4281	{
4282	case 'd': pszHelp = "The directory to use for testing. default: CWD/fstestdir"; break;
4283	case 'e': pszHelp = "Enables all tests. default: -e"; break;
4284	case 'z': pszHelp = "Disables all tests. default: -e"; break;
4285	case 's': pszHelp = "Set benchmark duration in seconds. default: 10 sec"; break;
4286	case 'm': pszHelp = "Set benchmark duration in milliseconds. default: 10000 ms"; break;
4287	case 'v': pszHelp = "More verbose execution."; break;
4288	case 'q': pszHelp = "Quiet execution."; break;
4289	case 'h': pszHelp = "Displays this help and exit"; break;
4290	case 'V': pszHelp = "Displays the program revision"; break;
4291	case kCmdOpt_ShowDuration: pszHelp = "Show duration of profile runs. default: --no-show-duration"; break;
4292	case kCmdOpt_NoShowDuration: pszHelp = "Hide duration of profile runs. default: --no-show-duration"; break;
4293	case kCmdOpt_ShowIterations: pszHelp = "Show iteration count for profile runs. default: --no-show-iterations"; break;
4294	case kCmdOpt_NoShowIterations: pszHelp = "Hide iteration count for profile runs. default: --no-show-iterations"; break;
4295	case kCmdOpt_ManyFiles: pszHelp = "Count of files in big test dir. default: --many-files 10000"; break;
4296	case kCmdOpt_NoManyFiles: pszHelp = "Skip big test dir with many files. default: --many-files 10000"; break;
4297	case kCmdOpt_ManyTreeFilesPerDir: pszHelp = "Count of files per directory in test tree. default: 640"; break;
4298	case kCmdOpt_ManyTreeSubdirsPerDir: pszHelp = "Count of subdirs per directory in test tree. default: 16"; break;
4299	case kCmdOpt_ManyTreeDepth: pszHelp = "Depth of test tree (not counting root). default: 1"; break;
4300	case kCmdOpt_IgnoreNoCache: pszHelp = "Ignore error wrt no-cache handle. default: --no-ignore-no-cache"; break;
4301	case kCmdOpt_NoIgnoreNoCache: pszHelp = "Do not ignore error wrt no-cache handle. default: --no-ignore-no-cache"; break;
4302	case kCmdOpt_IoFileSize: pszHelp = "Size of file used for I/O tests. default: 512 MB"; break;
4303	case kCmdOpt_SetBlockSize: pszHelp = "Sets single I/O block size (in bytes)."; break;
4304	case kCmdOpt_AddBlockSize: pszHelp = "Adds an I/O block size (in bytes)."; break;
4305	default:
4306	if (g_aCmdOptions[i].iShort >= kCmdOpt_First)
4307	{
4308	if (RTStrStartsWith(g_aCmdOptions[i].pszLong, "--no-"))
4309	RTStrPrintf(szHelp, sizeof(szHelp), "Disables the '%s' test.", g_aCmdOptions[i].pszLong + 5);
4310	else
4311	RTStrPrintf(szHelp, sizeof(szHelp), "Enables the '%s' test.", g_aCmdOptions[i].pszLong + 2);
4312	pszHelp = szHelp;
4313	}
4314	else
4315	pszHelp = "Option undocumented";
4316	break;
4317	}
4318	if ((unsigned)g_aCmdOptions[i].iShort < 127U)
4319	{
4320	char szOpt[64];
4321	RTStrPrintf(szOpt, sizeof(szOpt), "%s, -%c", g_aCmdOptions[i].pszLong, g_aCmdOptions[i].iShort);
4322	RTStrmPrintf(pStrm, " %-19s %s\n", szOpt, pszHelp);
4323	}
4324	else
4325	RTStrmPrintf(pStrm, " %-19s %s\n", g_aCmdOptions[i].pszLong, pszHelp);
4326	}
4327	}
4328
4329
4330	static uint32_t fsPerfCalcManyTreeFiles(void)
4331	{
4332	uint32_t cDirs = 1;
4333	for (uint32_t i = 0, cDirsAtLevel = 1; i < g_cManyTreeDepth; i++)
4334	{
4335	cDirs += cDirsAtLevel * g_cManyTreeSubdirsPerDir;
4336	cDirsAtLevel *= g_cManyTreeSubdirsPerDir;
4337	}
4338	return g_cManyTreeFilesPerDir * cDirs;
4339	}
4340
4341
4342	int main(int argc, char *argv[])
4343	{
4344	/*
4345	* Init IPRT and globals.
4346	*/
4347	int rc = RTTestInitAndCreate("FsPerf", &g_hTest);
4348	if (rc)
4349	return rc;
4350	RTListInit(&g_ManyTreeHead);
4351
4352	/*
4353	* Default values.
4354	*/
4355	rc = RTPathGetCurrent(g_szDir, sizeof(g_szDir) / 2);
4356	if (RT_SUCCESS(rc))
4357	rc = RTPathAppend(g_szDir, sizeof(g_szDir) / 2, "fstestdir-");
4358	if (RT_SUCCESS(rc))
4359	{
4360	g_cchDir = strlen(g_szDir);
4361	g_cchDir += RTStrPrintf(&g_szDir[g_cchDir], sizeof(g_szDir) - g_cchDir, "%u" RTPATH_SLASH_STR, RTProcSelf());
4362	}
4363	else
4364	{
4365	RTTestFailed(g_hTest, "RTPathGetCurrent (or RTPathAppend) failed: %Rrc\n", rc);
4366	return RTTestSummaryAndDestroy(g_hTest);
4367	}
4368
4369	RTGETOPTUNION ValueUnion;
4370	RTGETOPTSTATE GetState;
4371	RTGetOptInit(&GetState, argc, argv, g_aCmdOptions, RT_ELEMENTS(g_aCmdOptions), 1, 0 /* fFlags */);
4372	while ((rc = RTGetOpt(&GetState, &ValueUnion)) != 0)
4373	{
4374	switch (rc)
4375	{
4376	case 'd':
4377	rc = RTPathAbs(ValueUnion.psz, g_szDir, sizeof(g_szDir) / 2);
4378	if (RT_SUCCESS(rc))
4379	{
4380	RTPathEnsureTrailingSeparator(g_szDir, sizeof(g_szDir));
4381	g_cchDir = strlen(g_szDir);
4382	break;
4383	}
4384	RTTestFailed(g_hTest, "RTPathAbs(%s) failed: %Rrc\n", ValueUnion.psz, rc);
4385	return RTTestSummaryAndDestroy(g_hTest);
4386
4387	case 's':
4388	if (ValueUnion.u32 == 0)
4389	g_nsTestRun = RT_NS_1SEC_64 * 10;
4390	else
4391	g_nsTestRun = ValueUnion.u32 * RT_NS_1SEC_64;
4392	break;
4393
4394	case 'm':
4395	if (ValueUnion.u64 == 0)
4396	g_nsTestRun = RT_NS_1SEC_64 * 10;
4397	else
4398	g_nsTestRun = ValueUnion.u64 * RT_NS_1MS;
4399	break;
4400
4401	case 'e':
4402	g_fManyFiles = true;
4403	g_fOpen = true;
4404	g_fFStat = true;
4405	g_fFChMod = true;
4406	g_fFUtimes = true;
4407	g_fStat = true;
4408	g_fChMod = true;
4409	g_fUtimes = true;
4410	g_fRename = true;
4411	g_fDirOpen = true;
4412	g_fDirEnum = true;
4413	g_fMkRmDir = true;
4414	g_fStatVfs = true;
4415	g_fRm = true;
4416	g_fChSize = true;
4417	g_fReadTests = true;
4418	g_fReadPerf = true;
4419	#ifdef FSPERF_TEST_SENDFILE
4420	g_fSendFile = true;
4421	#endif
4422	#ifdef RT_OS_LINUX
4423	g_fSplice = true;
4424	#endif
4425	g_fWriteTests= true;
4426	g_fWritePerf = true;
4427	g_fSeek = true;
4428	g_fFSync = true;
4429	g_fMMap = true;
4430	g_fCopy = true;
4431	break;
4432
4433	case 'z':
4434	g_fManyFiles = false;
4435	g_fOpen = false;
4436	g_fFStat = false;
4437	g_fFChMod = false;
4438	g_fFUtimes = false;
4439	g_fStat = false;
4440	g_fChMod = false;
4441	g_fUtimes = false;
4442	g_fRename = false;
4443	g_fDirOpen = false;
4444	g_fDirEnum = false;
4445	g_fMkRmDir = false;
4446	g_fStatVfs = false;
4447	g_fRm = false;
4448	g_fChSize = false;
4449	g_fReadTests = false;
4450	g_fReadPerf = false;
4451	#ifdef FSPERF_TEST_SENDFILE
4452	g_fSendFile = false;
4453	#endif
4454	#ifdef RT_OS_LINUX
4455	g_fSplice = false;
4456	#endif
4457	g_fWriteTests= false;
4458	g_fWritePerf = false;
4459	g_fSeek = false;
4460	g_fFSync = false;
4461	g_fMMap = false;
4462	g_fCopy = false;
4463	break;
4464
4465	#define CASE_OPT(a_Stem) \
4466	case RT_CONCAT(kCmdOpt_,a_Stem): RT_CONCAT(g_f,a_Stem) = true; break; \
4467	case RT_CONCAT(kCmdOpt_No,a_Stem): RT_CONCAT(g_f,a_Stem) = false; break
4468	CASE_OPT(Open);
4469	CASE_OPT(FStat);
4470	CASE_OPT(FChMod);
4471	CASE_OPT(FUtimes);
4472	CASE_OPT(Stat);
4473	CASE_OPT(ChMod);
4474	CASE_OPT(Utimes);
4475	CASE_OPT(Rename);
4476	CASE_OPT(DirOpen);
4477	CASE_OPT(DirEnum);
4478	CASE_OPT(MkRmDir);
4479	CASE_OPT(StatVfs);
4480	CASE_OPT(Rm);
4481	CASE_OPT(ChSize);
4482	CASE_OPT(ReadTests);
4483	CASE_OPT(ReadPerf);
4484	#ifdef FSPERF_TEST_SENDFILE
4485	CASE_OPT(SendFile);
4486	#endif
4487	#ifdef RT_OS_LINUX
4488	CASE_OPT(Splice);
4489	#endif
4490	CASE_OPT(WriteTests);
4491	CASE_OPT(WritePerf);
4492	CASE_OPT(Seek);
4493	CASE_OPT(FSync);
4494	CASE_OPT(MMap);
4495	CASE_OPT(IgnoreNoCache);
4496	CASE_OPT(Copy);
4497
4498	CASE_OPT(ShowDuration);
4499	CASE_OPT(ShowIterations);
4500	#undef CASE_OPT
4501
4502	case kCmdOpt_ManyFiles:
4503	g_fManyFiles = ValueUnion.u32 > 0;
4504	g_cManyFiles = ValueUnion.u32;
4505	break;
4506
4507	case kCmdOpt_NoManyFiles:
4508	g_fManyFiles = false;
4509	break;
4510
4511	case kCmdOpt_ManyTreeFilesPerDir:
4512	if (ValueUnion.u32 > 0 && ValueUnion.u32 <= _64M)
4513	{
4514	g_cManyTreeFilesPerDir = ValueUnion.u32;
4515	g_cManyTreeFiles = fsPerfCalcManyTreeFiles();
4516	break;
4517	}
4518	RTTestFailed(g_hTest, "Out of range --files-per-dir value: %u (%#x)\n", ValueUnion.u32, ValueUnion.u32);
4519	return RTTestSummaryAndDestroy(g_hTest);
4520
4521	case kCmdOpt_ManyTreeSubdirsPerDir:
4522	if (ValueUnion.u32 > 0 && ValueUnion.u32 <= 1024)
4523	{
4524	g_cManyTreeSubdirsPerDir = ValueUnion.u32;
4525	g_cManyTreeFiles = fsPerfCalcManyTreeFiles();
4526	break;
4527	}
4528	RTTestFailed(g_hTest, "Out of range --subdirs-per-dir value: %u (%#x)\n", ValueUnion.u32, ValueUnion.u32);
4529	return RTTestSummaryAndDestroy(g_hTest);
4530
4531	case kCmdOpt_ManyTreeDepth:
4532	if (ValueUnion.u32 <= 8)
4533	{
4534	g_cManyTreeDepth = ValueUnion.u32;
4535	g_cManyTreeFiles = fsPerfCalcManyTreeFiles();
4536	break;
4537	}
4538	RTTestFailed(g_hTest, "Out of range --tree-depth value: %u (%#x)\n", ValueUnion.u32, ValueUnion.u32);
4539	return RTTestSummaryAndDestroy(g_hTest);
4540
4541	case kCmdOpt_IoFileSize:
4542	if (ValueUnion.u64 == 0)
4543	g_cbIoFile = _512M;
4544	else
4545	g_cbIoFile = ValueUnion.u64;
4546	break;
4547
4548	case kCmdOpt_SetBlockSize:
4549	if (ValueUnion.u32 > 0)
4550	{
4551	g_cIoBlocks = 1;
4552	g_acbIoBlocks[0] = ValueUnion.u32;
4553	}
4554	else
4555	{
4556	RTTestFailed(g_hTest, "Invalid I/O block size: %u (%#x)\n", ValueUnion.u32, ValueUnion.u32);
4557	return RTTestSummaryAndDestroy(g_hTest);
4558	}
4559	break;
4560
4561	case kCmdOpt_AddBlockSize:
4562	if (g_cIoBlocks >= RT_ELEMENTS(g_acbIoBlocks))
4563	RTTestFailed(g_hTest, "Too many I/O block sizes: max %u\n", RT_ELEMENTS(g_acbIoBlocks));
4564	else if (ValueUnion.u32 == 0)
4565	RTTestFailed(g_hTest, "Invalid I/O block size: %u (%#x)\n", ValueUnion.u32, ValueUnion.u32);
4566	else
4567	{
4568	g_acbIoBlocks[g_cIoBlocks++] = ValueUnion.u32;
4569	break;
4570	}
4571	return RTTestSummaryAndDestroy(g_hTest);
4572
4573	case 'q':
4574	g_uVerbosity = 0;
4575	break;
4576
4577	case 'v':
4578	g_uVerbosity++;
4579	break;
4580
4581	case 'h':
4582	Usage(g_pStdOut);
4583	return RTEXITCODE_SUCCESS;
4584
4585	case 'V':
4586	{
4587	char szRev[] = "$Revision: 77928 $";
4588	szRev[RT_ELEMENTS(szRev) - 2] = '\0';
4589	RTPrintf(RTStrStrip(strchr(szRev, ':') + 1));
4590	return RTEXITCODE_SUCCESS;
4591	}
4592
4593	default:
4594	return RTGetOptPrintError(rc, &ValueUnion);
4595	}
4596	}
4597
4598	/*
4599	* Create the test directory with an 'empty' subdirectory under it,
4600	* execute the tests, and remove directory when done.
4601	*/
4602	RTTestBanner(g_hTest);
4603	if (!RTPathExists(g_szDir))
4604	{
4605	/* The base dir: */
4606	rc = RTDirCreate(g_szDir, 0755,
4607	RTDIRCREATE_FLAGS_NOT_CONTENT_INDEXED_DONT_SET \| RTDIRCREATE_FLAGS_NOT_CONTENT_INDEXED_NOT_CRITICAL);
4608	if (RT_SUCCESS(rc))
4609	{
4610	RTTestIPrintf(RTTESTLVL_ALWAYS, "Test dir: %s\n", g_szDir);
4611	rc = fsPrepTestArea();
4612	if (RT_SUCCESS(rc))
4613	{
4614	/* Profile RTTimeNanoTS(). */
4615	fsPerfNanoTS();
4616
4617	/* Do tests: */
4618	if (g_fManyFiles)
4619	fsPerfManyFiles();
4620	if (g_fOpen)
4621	fsPerfOpen();
4622	if (g_fFStat)
4623	fsPerfFStat();
4624	if (g_fFChMod)
4625	fsPerfFChMod();
4626	if (g_fFUtimes)
4627	fsPerfFUtimes();
4628	if (g_fStat)
4629	fsPerfStat();
4630	if (g_fChMod)
4631	fsPerfChmod();
4632	if (g_fUtimes)
4633	fsPerfUtimes();
4634	if (g_fRename)
4635	fsPerfRename();
4636	if (g_fDirOpen)
4637	vsPerfDirOpen();
4638	if (g_fDirEnum)
4639	vsPerfDirEnum();
4640	if (g_fMkRmDir)
4641	fsPerfMkRmDir();
4642	if (g_fStatVfs)
4643	fsPerfStatVfs();
4644	if (g_fRm \|\| g_fManyFiles)
4645	fsPerfRm(); /* deletes manyfiles and manytree */
4646	if (g_fChSize)
4647	fsPerfChSize();
4648	if ( g_fReadPerf \|\| g_fReadTests \|\| g_fWritePerf \|\| g_fWriteTests
4649	#ifdef FSPERF_TEST_SENDFILE
4650	\|\| g_fSendFile
4651	#endif
4652	#ifdef RT_OS_LINUX
4653	\|\| g_fSplice
4654	#endif
4655	\|\| g_fSeek \|\| g_fFSync \|\| g_fMMap)
4656	fsPerfIo();
4657	if (g_fCopy)
4658	fsPerfCopy();
4659	}
4660
4661	/* Cleanup: */
4662	g_szDir[g_cchDir] = '\0';
4663	rc = RTDirRemoveRecursive(g_szDir, RTDIRRMREC_F_CONTENT_AND_DIR);
4664	if (RT_FAILURE(rc))
4665	RTTestFailed(g_hTest, "RTDirRemoveRecursive(%s,) -> %Rrc\n", g_szDir, rc);
4666	}
4667	else
4668	RTTestFailed(g_hTest, "RTDirCreate(%s) -> %Rrc\n", g_szDir, rc);
4669	}
4670	else
4671	RTTestFailed(g_hTest, "Test directory already exists: %s\n", g_szDir);
4672
4673	return RTTestSummaryAndDestroy(g_hTest);
4674	}
4675

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source: vbox/trunk/src/VBox/ValidationKit/utils/fs/FsPerf.cpp@ 77928

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