VBoxServiceStats.cpp@ 68080

Last change on this file since 68080 was 63566, checked in by vboxsync, 8 years ago
scm: cleaning up todos
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1	/* $Id: VBoxServiceStats.cpp 63566 2016-08-16 14:05:58Z vboxsync $ */
2	/** @file
3	* VBoxStats - Guest statistics notification
4	*/
5
6	/*
7	* Copyright (C) 2006-2016 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
18	/** @page pg_vgsvc_vmstats VBoxService - VM Statistics
19	*
20	* The VM statistics subservice helps out the performance collector API on the
21	* host side by providing metrics from inside the guest.
22	*
23	* See IPerformanceCollector, CollectorGuest and the "Guest/" submetrics that
24	* gets registered by Machine::i_registerMetrics in Main.
25	*/
26
27
28	/*********************************************************************************************************************************
29	* Header Files *
30	*********************************************************************************************************************************/
31	#if defined(RT_OS_WINDOWS)
32	# ifdef TARGET_NT4
33	# undef _WIN32_WINNT
34	# define _WIN32_WINNT 0x501
35	# endif
36	# include <iprt/win/windows.h>
37	# include <psapi.h>
38	# include <winternl.h>
39
40	#elif defined(RT_OS_LINUX)
41	# include <iprt/ctype.h>
42	# include <iprt/stream.h>
43	# include <unistd.h>
44
45	#elif defined(RT_OS_SOLARIS)
46	# include <kstat.h>
47	# include <sys/sysinfo.h>
48	# include <unistd.h>
49	#else
50	/** @todo port me. */
51
52	#endif
53
54	#include <iprt/assert.h>
55	#include <iprt/mem.h>
56	#include <iprt/ldr.h>
57	#include <VBox/param.h>
58	#include <iprt/semaphore.h>
59	#include <iprt/string.h>
60	#include <iprt/system.h>
61	#include <iprt/time.h>
62	#include <iprt/thread.h>
63	#include <VBox/VBoxGuestLib.h>
64	#include "VBoxServiceInternal.h"
65	#include "VBoxServiceUtils.h"
66
67
68	/*********************************************************************************************************************************
69	* Structures and Typedefs *
70	*********************************************************************************************************************************/
71	typedef struct _VBOXSTATSCONTEXT
72	{
73	RTMSINTERVAL cMsStatInterval;
74
75	uint64_t au64LastCpuLoad_Idle[VMM_MAX_CPU_COUNT];
76	uint64_t au64LastCpuLoad_Kernel[VMM_MAX_CPU_COUNT];
77	uint64_t au64LastCpuLoad_User[VMM_MAX_CPU_COUNT];
78	uint64_t au64LastCpuLoad_Nice[VMM_MAX_CPU_COUNT];
79
80	#ifdef RT_OS_WINDOWS
81	NTSTATUS (WINAPI *pfnNtQuerySystemInformation)(SYSTEM_INFORMATION_CLASS SystemInformationClass, PVOID SystemInformation,
82	ULONG SystemInformationLength, PULONG ReturnLength);
83	void (WINAPI *pfnGlobalMemoryStatusEx)(LPMEMORYSTATUSEX lpBuffer);
84	BOOL (WINAPI *pfnGetPerformanceInfo)(PPERFORMANCE_INFORMATION pPerformanceInformation, DWORD cb);
85	#endif
86	} VBOXSTATSCONTEXT;
87
88
89	/*********************************************************************************************************************************
90	* Global Variables *
91	*********************************************************************************************************************************/
92	/** Global data. */
93	static VBOXSTATSCONTEXT g_VMStat = {0};
94
95	/** The semaphore we're blocking on. */
96	static RTSEMEVENTMULTI g_VMStatEvent = NIL_RTSEMEVENTMULTI;
97
98
99	/**
100	* @interface_method_impl{VBOXSERVICE,pfnInit}
101	*/
102	static DECLCALLBACK(int) vgsvcVMStatsInit(void)
103	{
104	VGSvcVerbose(3, "vgsvcVMStatsInit\n");
105
106	int rc = RTSemEventMultiCreate(&g_VMStatEvent);
107	AssertRCReturn(rc, rc);
108
109	g_VMStat.cMsStatInterval = 0; /* default; update disabled */
110	RT_ZERO(g_VMStat.au64LastCpuLoad_Idle);
111	RT_ZERO(g_VMStat.au64LastCpuLoad_Kernel);
112	RT_ZERO(g_VMStat.au64LastCpuLoad_User);
113	RT_ZERO(g_VMStat.au64LastCpuLoad_Nice);
114
115	rc = VbglR3StatQueryInterval(&g_VMStat.cMsStatInterval);
116	if (RT_SUCCESS(rc))
117	VGSvcVerbose(3, "vgsvcVMStatsInit: New statistics interval %u seconds\n", g_VMStat.cMsStatInterval);
118	else
119	VGSvcVerbose(3, "vgsvcVMStatsInit: DeviceIoControl failed with %d\n", rc);
120
121	#ifdef RT_OS_WINDOWS
122	/* NtQuerySystemInformation might be dropped in future releases, so load
123	it dynamically as per Microsoft's recommendation. */
124	(void *)&g_VMStat.pfnNtQuerySystemInformation = RTLdrGetSystemSymbol("ntdll.dll", "NtQuerySystemInformation");
125	if (g_VMStat.pfnNtQuerySystemInformation)
126	VGSvcVerbose(3, "vgsvcVMStatsInit: g_VMStat.pfnNtQuerySystemInformation = %x\n", g_VMStat.pfnNtQuerySystemInformation);
127	else
128	{
129	VGSvcVerbose(3, "vgsvcVMStatsInit: ntdll.NtQuerySystemInformation not found!\n");
130	return VERR_SERVICE_DISABLED;
131	}
132
133	/* GlobalMemoryStatus is win2k and up, so load it dynamically */
134	(void *)&g_VMStat.pfnGlobalMemoryStatusEx = RTLdrGetSystemSymbol("kernel32.dll", "GlobalMemoryStatusEx");
135	if (g_VMStat.pfnGlobalMemoryStatusEx)
136	VGSvcVerbose(3, "vgsvcVMStatsInit: g_VMStat.GlobalMemoryStatusEx = %x\n", g_VMStat.pfnGlobalMemoryStatusEx);
137	else
138	{
139	/** @todo Now fails in NT4; do we care? */
140	VGSvcVerbose(3, "vgsvcVMStatsInit: kernel32.GlobalMemoryStatusEx not found!\n");
141	return VERR_SERVICE_DISABLED;
142	}
143
144	/* GetPerformanceInfo is xp and up, so load it dynamically */
145	(void *)&g_VMStat.pfnGetPerformanceInfo = RTLdrGetSystemSymbol("psapi.dll", "GetPerformanceInfo");
146	if (g_VMStat.pfnGetPerformanceInfo)
147	VGSvcVerbose(3, "vgsvcVMStatsInit: g_VMStat.pfnGetPerformanceInfo= %x\n", g_VMStat.pfnGetPerformanceInfo);
148	#endif /* RT_OS_WINDOWS */
149
150	return VINF_SUCCESS;
151	}
152
153
154	/**
155	* Gathers VM statistics and reports them to the host.
156	*/
157	static void vgsvcVMStatsReport(void)
158	{
159	#if defined(RT_OS_WINDOWS)
160	Assert(g_VMStat.pfnGlobalMemoryStatusEx && g_VMStat.pfnNtQuerySystemInformation);
161	if ( !g_VMStat.pfnGlobalMemoryStatusEx
162	\|\| !g_VMStat.pfnNtQuerySystemInformation)
163	return;
164
165	/* Clear the report so we don't report garbage should NtQuerySystemInformation
166	behave in an unexpected manner. */
167	VMMDevReportGuestStats req;
168	RT_ZERO(req);
169
170	/* Query and report guest statistics */
171	SYSTEM_INFO systemInfo;
172	GetSystemInfo(&systemInfo);
173
174	MEMORYSTATUSEX memStatus;
175	memStatus.dwLength = sizeof(memStatus);
176	g_VMStat.pfnGlobalMemoryStatusEx(&memStatus);
177
178	req.guestStats.u32PageSize = systemInfo.dwPageSize;
179	req.guestStats.u32PhysMemTotal = (uint32_t)(memStatus.ullTotalPhys / _4K);
180	req.guestStats.u32PhysMemAvail = (uint32_t)(memStatus.ullAvailPhys / _4K);
181	/* The current size of the committed memory limit, in bytes. This is physical
182	memory plus the size of the page file, minus a small overhead. */
183	req.guestStats.u32PageFileSize = (uint32_t)(memStatus.ullTotalPageFile / _4K) - req.guestStats.u32PhysMemTotal;
184	req.guestStats.u32MemoryLoad = memStatus.dwMemoryLoad;
185	req.guestStats.u32StatCaps = VBOX_GUEST_STAT_PHYS_MEM_TOTAL
186	\| VBOX_GUEST_STAT_PHYS_MEM_AVAIL
187	\| VBOX_GUEST_STAT_PAGE_FILE_SIZE
188	\| VBOX_GUEST_STAT_MEMORY_LOAD;
189	# ifdef VBOX_WITH_MEMBALLOON
190	req.guestStats.u32PhysMemBalloon = VGSvcBalloonQueryPages(_4K);
191	req.guestStats.u32StatCaps \|= VBOX_GUEST_STAT_PHYS_MEM_BALLOON;
192	# else
193	req.guestStats.u32PhysMemBalloon = 0;
194	# endif
195
196	if (g_VMStat.pfnGetPerformanceInfo)
197	{
198	PERFORMANCE_INFORMATION perfInfo;
199
200	if (g_VMStat.pfnGetPerformanceInfo(&perfInfo, sizeof(perfInfo)))
201	{
202	req.guestStats.u32Processes = perfInfo.ProcessCount;
203	req.guestStats.u32Threads = perfInfo.ThreadCount;
204	req.guestStats.u32Handles = perfInfo.HandleCount;
205	req.guestStats.u32MemCommitTotal = perfInfo.CommitTotal; /* already in pages */
206	req.guestStats.u32MemKernelTotal = perfInfo.KernelTotal; /* already in pages */
207	req.guestStats.u32MemKernelPaged = perfInfo.KernelPaged; /* already in pages */
208	req.guestStats.u32MemKernelNonPaged = perfInfo.KernelNonpaged; /* already in pages */
209	req.guestStats.u32MemSystemCache = perfInfo.SystemCache; /* already in pages */
210	req.guestStats.u32StatCaps \|= VBOX_GUEST_STAT_PROCESSES \| VBOX_GUEST_STAT_THREADS \| VBOX_GUEST_STAT_HANDLES
211	\| VBOX_GUEST_STAT_MEM_COMMIT_TOTAL \| VBOX_GUEST_STAT_MEM_KERNEL_TOTAL
212	\| VBOX_GUEST_STAT_MEM_KERNEL_PAGED \| VBOX_GUEST_STAT_MEM_KERNEL_NONPAGED
213	\| VBOX_GUEST_STAT_MEM_SYSTEM_CACHE;
214	}
215	else
216	VGSvcVerbose(3, "vgsvcVMStatsReport: GetPerformanceInfo failed with %d\n", GetLastError());
217	}
218
219	/* Query CPU load information */
220	uint32_t cbStruct = systemInfo.dwNumberOfProcessors * sizeof(SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION);
221	PSYSTEM_PROCESSOR_PERFORMANCE_INFORMATION pProcInfo;
222	pProcInfo = (PSYSTEM_PROCESSOR_PERFORMANCE_INFORMATION)RTMemAlloc(cbStruct);
223	if (!pProcInfo)
224	return;
225
226	/* Unfortunately GetSystemTimes is XP SP1 and up only, so we need to use the semi-undocumented NtQuerySystemInformation */
227	bool fCpuInfoAvail = false;
228	DWORD cbReturned;
229	NTSTATUS rcNt = g_VMStat.pfnNtQuerySystemInformation(SystemProcessorPerformanceInformation, pProcInfo, cbStruct, &cbReturned);
230	if ( !rcNt
231	&& cbReturned == cbStruct)
232	{
233	for (uint32_t i = 0; i < systemInfo.dwNumberOfProcessors; i++)
234	{
235	if (i >= VMM_MAX_CPU_COUNT)
236	{
237	VGSvcVerbose(3, "vgsvcVMStatsReport: skipping information for CPUs %u..%u\n", i, systemInfo.dwNumberOfProcessors);
238	break;
239	}
240
241	if (g_VMStat.au64LastCpuLoad_Kernel[i] == 0)
242	{
243	/* first time */
244	g_VMStat.au64LastCpuLoad_Idle[i] = pProcInfo[i].IdleTime.QuadPart;
245	g_VMStat.au64LastCpuLoad_Kernel[i] = pProcInfo[i].KernelTime.QuadPart;
246	g_VMStat.au64LastCpuLoad_User[i] = pProcInfo[i].UserTime.QuadPart;
247
248	Sleep(250);
249
250	rcNt = g_VMStat.pfnNtQuerySystemInformation(SystemProcessorPerformanceInformation, pProcInfo, cbStruct, &cbReturned);
251	Assert(!rcNt);
252	}
253
254	uint64_t deltaIdle = (pProcInfo[i].IdleTime.QuadPart - g_VMStat.au64LastCpuLoad_Idle[i]);
255	uint64_t deltaKernel = (pProcInfo[i].KernelTime.QuadPart - g_VMStat.au64LastCpuLoad_Kernel[i]);
256	uint64_t deltaUser = (pProcInfo[i].UserTime.QuadPart - g_VMStat.au64LastCpuLoad_User[i]);
257	deltaKernel -= deltaIdle; /* idle time is added to kernel time */
258	uint64_t ullTotalTime = deltaIdle + deltaKernel + deltaUser;
259	if (ullTotalTime == 0) /* Prevent division through zero. */
260	ullTotalTime = 1;
261
262	req.guestStats.u32CpuLoad_Idle = (uint32_t)(deltaIdle * 100 / ullTotalTime);
263	req.guestStats.u32CpuLoad_Kernel = (uint32_t)(deltaKernel* 100 / ullTotalTime);
264	req.guestStats.u32CpuLoad_User = (uint32_t)(deltaUser * 100 / ullTotalTime);
265
266	req.guestStats.u32StatCaps \|= VBOX_GUEST_STAT_CPU_LOAD_IDLE
267	\| VBOX_GUEST_STAT_CPU_LOAD_KERNEL
268	\| VBOX_GUEST_STAT_CPU_LOAD_USER;
269	req.guestStats.u32CpuId = i;
270	fCpuInfoAvail = true;
271	int rc = VbglR3StatReport(&req);
272	if (RT_SUCCESS(rc))
273	VGSvcVerbose(3, "vgsvcVMStatsReport: new statistics (CPU %u) reported successfully!\n", i);
274	else
275	VGSvcVerbose(3, "vgsvcVMStatsReport: VbglR3StatReport failed with rc=%Rrc\n", rc);
276
277	g_VMStat.au64LastCpuLoad_Idle[i] = pProcInfo[i].IdleTime.QuadPart;
278	g_VMStat.au64LastCpuLoad_Kernel[i] = pProcInfo[i].KernelTime.QuadPart;
279	g_VMStat.au64LastCpuLoad_User[i] = pProcInfo[i].UserTime.QuadPart;
280	}
281	}
282	RTMemFree(pProcInfo);
283
284	if (!fCpuInfoAvail)
285	{
286	VGSvcVerbose(3, "vgsvcVMStatsReport: CPU info not available!\n");
287	int rc = VbglR3StatReport(&req);
288	if (RT_SUCCESS(rc))
289	VGSvcVerbose(3, "vgsvcVMStatsReport: new statistics reported successfully!\n");
290	else
291	VGSvcVerbose(3, "vgsvcVMStatsReport: stats report failed with rc=%Rrc\n", rc);
292	}
293
294	#elif defined(RT_OS_LINUX)
295	VMMDevReportGuestStats req;
296	RT_ZERO(req);
297	PRTSTREAM pStrm;
298	char szLine[256];
299	char *psz;
300
301	int rc = RTStrmOpen("/proc/meminfo", "r", &pStrm);
302	if (RT_SUCCESS(rc))
303	{
304	uint64_t u64Kb;
305	uint64_t u64Total = 0, u64Free = 0, u64Buffers = 0, u64Cached = 0, u64PagedTotal = 0;
306	for (;;)
307	{
308	rc = RTStrmGetLine(pStrm, szLine, sizeof(szLine));
309	if (RT_FAILURE(rc))
310	break;
311	if (strstr(szLine, "MemTotal:") == szLine)
312	{
313	rc = RTStrToUInt64Ex(RTStrStripL(&szLine[9]), &psz, 0, &u64Kb);
314	if (RT_SUCCESS(rc))
315	u64Total = u64Kb * _1K;
316	}
317	else if (strstr(szLine, "MemFree:") == szLine)
318	{
319	rc = RTStrToUInt64Ex(RTStrStripL(&szLine[8]), &psz, 0, &u64Kb);
320	if (RT_SUCCESS(rc))
321	u64Free = u64Kb * _1K;
322	}
323	else if (strstr(szLine, "Buffers:") == szLine)
324	{
325	rc = RTStrToUInt64Ex(RTStrStripL(&szLine[8]), &psz, 0, &u64Kb);
326	if (RT_SUCCESS(rc))
327	u64Buffers = u64Kb * _1K;
328	}
329	else if (strstr(szLine, "Cached:") == szLine)
330	{
331	rc = RTStrToUInt64Ex(RTStrStripL(&szLine[7]), &psz, 0, &u64Kb);
332	if (RT_SUCCESS(rc))
333	u64Cached = u64Kb * _1K;
334	}
335	else if (strstr(szLine, "SwapTotal:") == szLine)
336	{
337	rc = RTStrToUInt64Ex(RTStrStripL(&szLine[10]), &psz, 0, &u64Kb);
338	if (RT_SUCCESS(rc))
339	u64PagedTotal = u64Kb * _1K;
340	}
341	}
342	req.guestStats.u32PhysMemTotal = u64Total / _4K;
343	req.guestStats.u32PhysMemAvail = (u64Free + u64Buffers + u64Cached) / _4K;
344	req.guestStats.u32MemSystemCache = (u64Buffers + u64Cached) / _4K;
345	req.guestStats.u32PageFileSize = u64PagedTotal / _4K;
346	RTStrmClose(pStrm);
347	}
348	else
349	VGSvcVerbose(3, "vgsvcVMStatsReport: memory info not available!\n");
350
351	req.guestStats.u32PageSize = getpagesize();
352	req.guestStats.u32StatCaps = VBOX_GUEST_STAT_PHYS_MEM_TOTAL
353	\| VBOX_GUEST_STAT_PHYS_MEM_AVAIL
354	\| VBOX_GUEST_STAT_MEM_SYSTEM_CACHE
355	\| VBOX_GUEST_STAT_PAGE_FILE_SIZE;
356	# ifdef VBOX_WITH_MEMBALLOON
357	req.guestStats.u32PhysMemBalloon = VGSvcBalloonQueryPages(_4K);
358	req.guestStats.u32StatCaps \|= VBOX_GUEST_STAT_PHYS_MEM_BALLOON;
359	# else
360	req.guestStats.u32PhysMemBalloon = 0;
361	# endif
362
363
364	/** @todo req.guestStats.u32Threads */
365	/** @todo req.guestStats.u32Processes */
366	/* req.guestStats.u32Handles doesn't make sense here. */
367	/** @todo req.guestStats.u32MemoryLoad */
368	/** @todo req.guestStats.u32MemCommitTotal */
369	/** @todo req.guestStats.u32MemKernelTotal */
370	/** @todo req.guestStats.u32MemKernelPaged, make any sense? = u32MemKernelTotal? */
371	/** @todo req.guestStats.u32MemKernelNonPaged, make any sense? = 0? */
372
373	bool fCpuInfoAvail = false;
374	rc = RTStrmOpen("/proc/stat", "r", &pStrm);
375	if (RT_SUCCESS(rc))
376	{
377	for (;;)
378	{
379	rc = RTStrmGetLine(pStrm, szLine, sizeof(szLine));
380	if (RT_FAILURE(rc))
381	break;
382	if ( strstr(szLine, "cpu") == szLine
383	&& strlen(szLine) > 3
384	&& RT_C_IS_DIGIT(szLine[3]))
385	{
386	uint32_t u32CpuId;
387	rc = RTStrToUInt32Ex(&szLine[3], &psz, 0, &u32CpuId);
388	if (u32CpuId < VMM_MAX_CPU_COUNT)
389	{
390	uint64_t u64User = 0;
391	if (RT_SUCCESS(rc))
392	rc = RTStrToUInt64Ex(RTStrStripL(psz), &psz, 0, &u64User);
393
394	uint64_t u64Nice = 0;
395	if (RT_SUCCESS(rc))
396	rc = RTStrToUInt64Ex(RTStrStripL(psz), &psz, 0, &u64Nice);
397
398	uint64_t u64System = 0;
399	if (RT_SUCCESS(rc))
400	rc = RTStrToUInt64Ex(RTStrStripL(psz), &psz, 0, &u64System);
401
402	uint64_t u64Idle = 0;
403	if (RT_SUCCESS(rc))
404	rc = RTStrToUInt64Ex(RTStrStripL(psz), &psz, 0, &u64Idle);
405
406	uint64_t u64DeltaIdle = u64Idle - g_VMStat.au64LastCpuLoad_Idle[u32CpuId];
407	uint64_t u64DeltaSystem = u64System - g_VMStat.au64LastCpuLoad_Kernel[u32CpuId];
408	uint64_t u64DeltaUser = u64User - g_VMStat.au64LastCpuLoad_User[u32CpuId];
409	uint64_t u64DeltaNice = u64Nice - g_VMStat.au64LastCpuLoad_Nice[u32CpuId];
410
411	uint64_t u64DeltaAll = u64DeltaIdle
412	+ u64DeltaSystem
413	+ u64DeltaUser
414	+ u64DeltaNice;
415	if (u64DeltaAll == 0) /* Prevent division through zero. */
416	u64DeltaAll = 1;
417
418	g_VMStat.au64LastCpuLoad_Idle[u32CpuId] = u64Idle;
419	g_VMStat.au64LastCpuLoad_Kernel[u32CpuId] = u64System;
420	g_VMStat.au64LastCpuLoad_User[u32CpuId] = u64User;
421	g_VMStat.au64LastCpuLoad_Nice[u32CpuId] = u64Nice;
422
423	req.guestStats.u32CpuLoad_Idle = (uint32_t)(u64DeltaIdle * 100 / u64DeltaAll);
424	req.guestStats.u32CpuLoad_Kernel = (uint32_t)(u64DeltaSystem * 100 / u64DeltaAll);
425	req.guestStats.u32CpuLoad_User = (uint32_t)((u64DeltaUser
426	+ u64DeltaNice) * 100 / u64DeltaAll);
427	req.guestStats.u32StatCaps \|= VBOX_GUEST_STAT_CPU_LOAD_IDLE
428	\| VBOX_GUEST_STAT_CPU_LOAD_KERNEL
429	\| VBOX_GUEST_STAT_CPU_LOAD_USER;
430	req.guestStats.u32CpuId = u32CpuId;
431	fCpuInfoAvail = true;
432	rc = VbglR3StatReport(&req);
433	if (RT_SUCCESS(rc))
434	VGSvcVerbose(3, "vgsvcVMStatsReport: new statistics (CPU %u) reported successfully!\n", u32CpuId);
435	else
436	VGSvcVerbose(3, "vgsvcVMStatsReport: stats report failed with rc=%Rrc\n", rc);
437	}
438	else
439	VGSvcVerbose(3, "vgsvcVMStatsReport: skipping information for CPU%u\n", u32CpuId);
440	}
441	}
442	RTStrmClose(pStrm);
443	}
444	if (!fCpuInfoAvail)
445	{
446	VGSvcVerbose(3, "vgsvcVMStatsReport: CPU info not available!\n");
447	rc = VbglR3StatReport(&req);
448	if (RT_SUCCESS(rc))
449	VGSvcVerbose(3, "vgsvcVMStatsReport: new statistics reported successfully!\n");
450	else
451	VGSvcVerbose(3, "vgsvcVMStatsReport: stats report failed with rc=%Rrc\n", rc);
452	}
453
454	#elif defined(RT_OS_SOLARIS)
455	VMMDevReportGuestStats req;
456	RT_ZERO(req);
457	kstat_ctl_t *pStatKern = kstat_open();
458	if (pStatKern)
459	{
460	/*
461	* Memory statistics.
462	*/
463	uint64_t u64Total = 0, u64Free = 0, u64Buffers = 0, u64Cached = 0, u64PagedTotal = 0;
464	int rc = -1;
465	kstat_t pStatPages = kstat_lookup(pStatKern, (char )"unix", 0 /* instance /, (char )"system_pages");
466	if (pStatPages)
467	{
468	rc = kstat_read(pStatKern, pStatPages, NULL /* optional-copy-buf */);
469	if (rc != -1)
470	{
471	kstat_named_t *pStat = NULL;
472	pStat = (kstat_named_t )kstat_data_lookup(pStatPages, (char )"pagestotal");
473	if (pStat)
474	u64Total = pStat->value.ul;
475
476	pStat = (kstat_named_t )kstat_data_lookup(pStatPages, (char )"freemem");
477	if (pStat)
478	u64Free = pStat->value.ul;
479	}
480	}
481
482	kstat_t pStatZFS = kstat_lookup(pStatKern, (char )"zfs", 0 /* instance /, (char )"arcstats");
483	if (pStatZFS)
484	{
485	rc = kstat_read(pStatKern, pStatZFS, NULL /* optional-copy-buf */);
486	if (rc != -1)
487	{
488	kstat_named_t pStat = (kstat_named_t )kstat_data_lookup(pStatZFS, (char *)"size");
489	if (pStat)
490	u64Cached = pStat->value.ul;
491	}
492	}
493
494	/*
495	* The vminfo are accumulative counters updated every "N" ticks. Let's get the
496	* number of stat updates so far and use that to divide the swap counter.
497	*/
498	kstat_t pStatInfo = kstat_lookup(pStatKern, (char )"unix", 0 /* instance /, (char )"sysinfo");
499	if (pStatInfo)
500	{
501	sysinfo_t SysInfo;
502	rc = kstat_read(pStatKern, pStatInfo, &SysInfo);
503	if (rc != -1)
504	{
505	kstat_t pStatVMInfo = kstat_lookup(pStatKern, (char )"unix", 0 /* instance /, (char )"vminfo");
506	if (pStatVMInfo)
507	{
508	vminfo_t VMInfo;
509	rc = kstat_read(pStatKern, pStatVMInfo, &VMInfo);
510	if (rc != -1)
511	{
512	Assert(SysInfo.updates != 0);
513	u64PagedTotal = VMInfo.swap_avail / SysInfo.updates;
514	}
515	}
516	}
517	}
518
519	req.guestStats.u32PhysMemTotal = u64Total; /* already in pages */
520	req.guestStats.u32PhysMemAvail = u64Free; /* already in pages */
521	req.guestStats.u32MemSystemCache = u64Cached / _4K;
522	req.guestStats.u32PageFileSize = u64PagedTotal; /* already in pages */
523	/** @todo req.guestStats.u32Threads */
524	/** @todo req.guestStats.u32Processes */
525	/** @todo req.guestStats.u32Handles -- ??? */
526	/** @todo req.guestStats.u32MemoryLoad */
527	/** @todo req.guestStats.u32MemCommitTotal */
528	/** @todo req.guestStats.u32MemKernelTotal */
529	/** @todo req.guestStats.u32MemKernelPaged */
530	/** @todo req.guestStats.u32MemKernelNonPaged */
531	req.guestStats.u32PageSize = getpagesize();
532
533	req.guestStats.u32StatCaps = VBOX_GUEST_STAT_PHYS_MEM_TOTAL
534	\| VBOX_GUEST_STAT_PHYS_MEM_AVAIL
535	\| VBOX_GUEST_STAT_MEM_SYSTEM_CACHE
536	\| VBOX_GUEST_STAT_PAGE_FILE_SIZE;
537	#ifdef VBOX_WITH_MEMBALLOON
538	req.guestStats.u32PhysMemBalloon = VGSvcBalloonQueryPages(_4K);
539	req.guestStats.u32StatCaps \|= VBOX_GUEST_STAT_PHYS_MEM_BALLOON;
540	#else
541	req.guestStats.u32PhysMemBalloon = 0;
542	#endif
543
544	/*
545	* CPU statistics.
546	*/
547	cpu_stat_t StatCPU;
548	RT_ZERO(StatCPU);
549	kstat_t *pStatNode = NULL;
550	uint32_t cCPUs = 0;
551	bool fCpuInfoAvail = false;
552	for (pStatNode = pStatKern->kc_chain; pStatNode != NULL; pStatNode = pStatNode->ks_next)
553	{
554	if (!strcmp(pStatNode->ks_module, "cpu_stat"))
555	{
556	rc = kstat_read(pStatKern, pStatNode, &StatCPU);
557	if (rc == -1)
558	break;
559
560	if (cCPUs < VMM_MAX_CPU_COUNT)
561	{
562	uint64_t u64Idle = StatCPU.cpu_sysinfo.cpu[CPU_IDLE];
563	uint64_t u64User = StatCPU.cpu_sysinfo.cpu[CPU_USER];
564	uint64_t u64System = StatCPU.cpu_sysinfo.cpu[CPU_KERNEL];
565
566	uint64_t u64DeltaIdle = u64Idle - g_VMStat.au64LastCpuLoad_Idle[cCPUs];
567	uint64_t u64DeltaSystem = u64System - g_VMStat.au64LastCpuLoad_Kernel[cCPUs];
568	uint64_t u64DeltaUser = u64User - g_VMStat.au64LastCpuLoad_User[cCPUs];
569
570	uint64_t u64DeltaAll = u64DeltaIdle + u64DeltaSystem + u64DeltaUser;
571	if (u64DeltaAll == 0) /* Prevent division through zero. */
572	u64DeltaAll = 1;
573
574	g_VMStat.au64LastCpuLoad_Idle[cCPUs] = u64Idle;
575	g_VMStat.au64LastCpuLoad_Kernel[cCPUs] = u64System;
576	g_VMStat.au64LastCpuLoad_User[cCPUs] = u64User;
577
578	req.guestStats.u32CpuId = cCPUs;
579	req.guestStats.u32CpuLoad_Idle = (uint32_t)(u64DeltaIdle * 100 / u64DeltaAll);
580	req.guestStats.u32CpuLoad_Kernel = (uint32_t)(u64DeltaSystem * 100 / u64DeltaAll);
581	req.guestStats.u32CpuLoad_User = (uint32_t)(u64DeltaUser * 100 / u64DeltaAll);
582
583	req.guestStats.u32StatCaps \|= VBOX_GUEST_STAT_CPU_LOAD_IDLE
584	\| VBOX_GUEST_STAT_CPU_LOAD_KERNEL
585	\| VBOX_GUEST_STAT_CPU_LOAD_USER;
586	fCpuInfoAvail = true;
587	rc = VbglR3StatReport(&req);
588	if (RT_SUCCESS(rc))
589	VGSvcVerbose(3, "vgsvcVMStatsReport: new statistics (CPU %u) reported successfully!\n", cCPUs);
590	else
591	VGSvcVerbose(3, "vgsvcVMStatsReport: stats report failed with rc=%Rrc\n", rc);
592	cCPUs++;
593	}
594	else
595	VGSvcVerbose(3, "vgsvcVMStatsReport: skipping information for CPU%u\n", cCPUs);
596	}
597	}
598
599	/*
600	* Report whatever statistics were collected.
601	*/
602	if (!fCpuInfoAvail)
603	{
604	VGSvcVerbose(3, "vgsvcVMStatsReport: CPU info not available!\n");
605	rc = VbglR3StatReport(&req);
606	if (RT_SUCCESS(rc))
607	VGSvcVerbose(3, "vgsvcVMStatsReport: new statistics reported successfully!\n");
608	else
609	VGSvcVerbose(3, "vgsvcVMStatsReport: stats report failed with rc=%Rrc\n", rc);
610	}
611
612	kstat_close(pStatKern);
613	}
614
615	#else
616	/** @todo implement for other platforms. */
617
618	#endif
619	}
620
621
622	/**
623	* @interface_method_impl{VBOXSERVICE,pfnWorker}
624	*/
625	DECLCALLBACK(int) vgsvcVMStatsWorker(bool volatile *pfShutdown)
626	{
627	int rc = VINF_SUCCESS;
628
629	/* Start monitoring of the stat event change event. */
630	rc = VbglR3CtlFilterMask(VMMDEV_EVENT_STATISTICS_INTERVAL_CHANGE_REQUEST, 0);
631	if (RT_FAILURE(rc))
632	{
633	VGSvcVerbose(3, "vgsvcVMStatsWorker: VbglR3CtlFilterMask failed with %d\n", rc);
634	return rc;
635	}
636
637	/*
638	* Tell the control thread that it can continue
639	* spawning services.
640	*/
641	RTThreadUserSignal(RTThreadSelf());
642
643	/*
644	* Now enter the loop retrieving runtime data continuously.
645	*/
646	for (;;)
647	{
648	uint32_t fEvents = 0;
649	RTMSINTERVAL cWaitMillies;
650
651	/* Check if an update interval change is pending. */
652	rc = VbglR3WaitEvent(VMMDEV_EVENT_STATISTICS_INTERVAL_CHANGE_REQUEST, 0 /* no wait */, &fEvents);
653	if ( RT_SUCCESS(rc)
654	&& (fEvents & VMMDEV_EVENT_STATISTICS_INTERVAL_CHANGE_REQUEST))
655	VbglR3StatQueryInterval(&g_VMStat.cMsStatInterval);
656
657	if (g_VMStat.cMsStatInterval)
658	{
659	vgsvcVMStatsReport();
660	cWaitMillies = g_VMStat.cMsStatInterval;
661	}
662	else
663	cWaitMillies = 3000;
664
665	/*
666	* Block for a while.
667	*
668	* The event semaphore takes care of ignoring interruptions and it
669	* allows us to implement service wakeup later.
670	*/
671	if (*pfShutdown)
672	break;
673	int rc2 = RTSemEventMultiWait(g_VMStatEvent, cWaitMillies);
674	if (*pfShutdown)
675	break;
676	if (rc2 != VERR_TIMEOUT && RT_FAILURE(rc2))
677	{
678	VGSvcError("vgsvcVMStatsWorker: RTSemEventMultiWait failed; rc2=%Rrc\n", rc2);
679	rc = rc2;
680	break;
681	}
682	}
683
684	/* Cancel monitoring of the stat event change event. */
685	rc = VbglR3CtlFilterMask(0, VMMDEV_EVENT_STATISTICS_INTERVAL_CHANGE_REQUEST);
686	if (RT_FAILURE(rc))
687	VGSvcVerbose(3, "vgsvcVMStatsWorker: VbglR3CtlFilterMask failed with %d\n", rc);
688
689	VGSvcVerbose(3, "VBoxStatsThread: finished statistics change request thread\n");
690	return 0;
691	}
692
693
694	/**
695	* @interface_method_impl{VBOXSERVICE,pfnStop}
696	*/
697	static DECLCALLBACK(void) vgsvcVMStatsStop(void)
698	{
699	RTSemEventMultiSignal(g_VMStatEvent);
700	}
701
702
703	/**
704	* @interface_method_impl{VBOXSERVICE,pfnTerm}
705	*/
706	static DECLCALLBACK(void) vgsvcVMStatsTerm(void)
707	{
708	if (g_VMStatEvent != NIL_RTSEMEVENTMULTI)
709	{
710	RTSemEventMultiDestroy(g_VMStatEvent);
711	g_VMStatEvent = NIL_RTSEMEVENTMULTI;
712	}
713	}
714
715
716	/**
717	* The 'vminfo' service description.
718	*/
719	VBOXSERVICE g_VMStatistics =
720	{
721	/* pszName. */
722	"vmstats",
723	/* pszDescription. */
724	"Virtual Machine Statistics",
725	/* pszUsage. */
726	NULL,
727	/* pszOptions. */
728	NULL,
729	/* methods */
730	VGSvcDefaultPreInit,
731	VGSvcDefaultOption,
732	vgsvcVMStatsInit,
733	vgsvcVMStatsWorker,
734	vgsvcVMStatsStop,
735	vgsvcVMStatsTerm
736	};
737

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source: vbox/trunk/src/VBox/Additions/common/VBoxService/VBoxServiceStats.cpp@ 68080

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