VBoxServiceStats.cpp@ 83958

Last change on this file since 83958 was 82968, checked in by vboxsync, 5 years ago
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1	/* $Id: VBoxServiceStats.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
2	/** @file
3	* VBoxStats - Guest statistics notification
4	*/
5
6	/*
7	* Copyright (C) 2006-2020 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	# include <iprt/win/windows.h>
33	# include <psapi.h>
34	# include <winternl.h>
35
36	#elif defined(RT_OS_LINUX)
37	# include <iprt/ctype.h>
38	# include <iprt/stream.h>
39	# include <unistd.h>
40
41	#elif defined(RT_OS_SOLARIS)
42	# include <kstat.h>
43	# include <sys/sysinfo.h>
44	# include <unistd.h>
45	#else
46	/** @todo port me. */
47
48	#endif
49
50	#include <iprt/assert.h>
51	#include <iprt/mem.h>
52	#include <iprt/ldr.h>
53	#include <VBox/param.h>
54	#include <iprt/semaphore.h>
55	#include <iprt/string.h>
56	#include <iprt/system.h>
57	#include <iprt/time.h>
58	#include <iprt/thread.h>
59	#include <VBox/err.h>
60	#include <VBox/VMMDev.h> /* For VMMDevReportGuestStats and indirectly VbglR3StatReport. */
61	#include <VBox/VBoxGuestLib.h>
62
63	#include "VBoxServiceInternal.h"
64	#include "VBoxServiceUtils.h"
65
66
67	/*********************************************************************************************************************************
68	* Structures and Typedefs *
69	*********************************************************************************************************************************/
70	typedef struct _VBOXSTATSCONTEXT
71	{
72	RTMSINTERVAL cMsStatInterval;
73
74	uint64_t au64LastCpuLoad_Idle[VMM_MAX_CPU_COUNT];
75	uint64_t au64LastCpuLoad_Kernel[VMM_MAX_CPU_COUNT];
76	uint64_t au64LastCpuLoad_User[VMM_MAX_CPU_COUNT];
77	uint64_t au64LastCpuLoad_Nice[VMM_MAX_CPU_COUNT];
78
79	#ifdef RT_OS_WINDOWS
80	NTSTATUS (WINAPI *pfnNtQuerySystemInformation)(SYSTEM_INFORMATION_CLASS SystemInformationClass, PVOID SystemInformation,
81	ULONG SystemInformationLength, PULONG ReturnLength);
82	void (WINAPI *pfnGlobalMemoryStatusEx)(LPMEMORYSTATUSEX lpBuffer);
83	BOOL (WINAPI *pfnGetPerformanceInfo)(PPERFORMANCE_INFORMATION pPerformanceInformation, DWORD cb);
84	#endif
85	} VBOXSTATSCONTEXT;
86
87
88	/*********************************************************************************************************************************
89	* Global Variables *
90	*********************************************************************************************************************************/
91	/** Global data. */
92	static VBOXSTATSCONTEXT g_VMStat = {0};
93
94	/** The semaphore we're blocking on. */
95	static RTSEMEVENTMULTI g_VMStatEvent = NIL_RTSEMEVENTMULTI;
96
97
98	/**
99	* @interface_method_impl{VBOXSERVICE,pfnInit}
100	*/
101	static DECLCALLBACK(int) vgsvcVMStatsInit(void)
102	{
103	VGSvcVerbose(3, "vgsvcVMStatsInit\n");
104
105	int rc = RTSemEventMultiCreate(&g_VMStatEvent);
106	AssertRCReturn(rc, rc);
107
108	g_VMStat.cMsStatInterval = 0; /* default; update disabled */
109	RT_ZERO(g_VMStat.au64LastCpuLoad_Idle);
110	RT_ZERO(g_VMStat.au64LastCpuLoad_Kernel);
111	RT_ZERO(g_VMStat.au64LastCpuLoad_User);
112	RT_ZERO(g_VMStat.au64LastCpuLoad_Nice);
113
114	rc = VbglR3StatQueryInterval(&g_VMStat.cMsStatInterval);
115	if (RT_SUCCESS(rc))
116	VGSvcVerbose(3, "vgsvcVMStatsInit: New statistics interval %u seconds\n", g_VMStat.cMsStatInterval);
117	else
118	VGSvcVerbose(3, "vgsvcVMStatsInit: DeviceIoControl failed with %d\n", rc);
119
120	#ifdef RT_OS_WINDOWS
121	/* NtQuerySystemInformation might be dropped in future releases, so load
122	it dynamically as per Microsoft's recommendation. */
123	(void *)&g_VMStat.pfnNtQuerySystemInformation = RTLdrGetSystemSymbol("ntdll.dll", "NtQuerySystemInformation");
124	if (g_VMStat.pfnNtQuerySystemInformation)
125	VGSvcVerbose(3, "vgsvcVMStatsInit: g_VMStat.pfnNtQuerySystemInformation = %x\n", g_VMStat.pfnNtQuerySystemInformation);
126	else
127	{
128	VGSvcVerbose(3, "vgsvcVMStatsInit: ntdll.NtQuerySystemInformation not found!\n");
129	return VERR_SERVICE_DISABLED;
130	}
131
132	/* GlobalMemoryStatus is win2k and up, so load it dynamically */
133	(void *)&g_VMStat.pfnGlobalMemoryStatusEx = RTLdrGetSystemSymbol("kernel32.dll", "GlobalMemoryStatusEx");
134	if (g_VMStat.pfnGlobalMemoryStatusEx)
135	VGSvcVerbose(3, "vgsvcVMStatsInit: g_VMStat.GlobalMemoryStatusEx = %x\n", g_VMStat.pfnGlobalMemoryStatusEx);
136	else
137	{
138	/** @todo Now fails in NT4; do we care? */
139	VGSvcVerbose(3, "vgsvcVMStatsInit: kernel32.GlobalMemoryStatusEx not found!\n");
140	return VERR_SERVICE_DISABLED;
141	}
142
143	/* GetPerformanceInfo is xp and up, so load it dynamically */
144	(void *)&g_VMStat.pfnGetPerformanceInfo = RTLdrGetSystemSymbol("psapi.dll", "GetPerformanceInfo");
145	if (g_VMStat.pfnGetPerformanceInfo)
146	VGSvcVerbose(3, "vgsvcVMStatsInit: g_VMStat.pfnGetPerformanceInfo= %x\n", g_VMStat.pfnGetPerformanceInfo);
147	#endif /* RT_OS_WINDOWS */
148
149	return VINF_SUCCESS;
150	}
151
152
153	/**
154	* Gathers VM statistics and reports them to the host.
155	*/
156	static void vgsvcVMStatsReport(void)
157	{
158	#if defined(RT_OS_WINDOWS)
159	Assert(g_VMStat.pfnGlobalMemoryStatusEx && g_VMStat.pfnNtQuerySystemInformation);
160	if ( !g_VMStat.pfnGlobalMemoryStatusEx
161	\|\| !g_VMStat.pfnNtQuerySystemInformation)
162	return;
163
164	/* Clear the report so we don't report garbage should NtQuerySystemInformation
165	behave in an unexpected manner. */
166	VMMDevReportGuestStats req;
167	RT_ZERO(req);
168
169	/* Query and report guest statistics */
170	SYSTEM_INFO systemInfo;
171	GetSystemInfo(&systemInfo);
172
173	MEMORYSTATUSEX memStatus;
174	memStatus.dwLength = sizeof(memStatus);
175	g_VMStat.pfnGlobalMemoryStatusEx(&memStatus);
176
177	req.guestStats.u32PageSize = systemInfo.dwPageSize;
178	req.guestStats.u32PhysMemTotal = (uint32_t)(memStatus.ullTotalPhys / _4K);
179	req.guestStats.u32PhysMemAvail = (uint32_t)(memStatus.ullAvailPhys / _4K);
180	/* The current size of the committed memory limit, in bytes. This is physical
181	memory plus the size of the page file, minus a small overhead. */
182	req.guestStats.u32PageFileSize = (uint32_t)(memStatus.ullTotalPageFile / _4K) - req.guestStats.u32PhysMemTotal;
183	req.guestStats.u32MemoryLoad = memStatus.dwMemoryLoad;
184	req.guestStats.u32StatCaps = VBOX_GUEST_STAT_PHYS_MEM_TOTAL
185	\| VBOX_GUEST_STAT_PHYS_MEM_AVAIL
186	\| VBOX_GUEST_STAT_PAGE_FILE_SIZE
187	\| VBOX_GUEST_STAT_MEMORY_LOAD;
188	# ifdef VBOX_WITH_MEMBALLOON
189	req.guestStats.u32PhysMemBalloon = VGSvcBalloonQueryPages(_4K);
190	req.guestStats.u32StatCaps \|= VBOX_GUEST_STAT_PHYS_MEM_BALLOON;
191	# else
192	req.guestStats.u32PhysMemBalloon = 0;
193	# endif
194
195	if (g_VMStat.pfnGetPerformanceInfo)
196	{
197	PERFORMANCE_INFORMATION perfInfo;
198
199	if (g_VMStat.pfnGetPerformanceInfo(&perfInfo, sizeof(perfInfo)))
200	{
201	req.guestStats.u32Processes = perfInfo.ProcessCount;
202	req.guestStats.u32Threads = perfInfo.ThreadCount;
203	req.guestStats.u32Handles = perfInfo.HandleCount;
204	req.guestStats.u32MemCommitTotal = perfInfo.CommitTotal; /* already in pages */
205	req.guestStats.u32MemKernelTotal = perfInfo.KernelTotal; /* already in pages */
206	req.guestStats.u32MemKernelPaged = perfInfo.KernelPaged; /* already in pages */
207	req.guestStats.u32MemKernelNonPaged = perfInfo.KernelNonpaged; /* already in pages */
208	req.guestStats.u32MemSystemCache = perfInfo.SystemCache; /* already in pages */
209	req.guestStats.u32StatCaps \|= VBOX_GUEST_STAT_PROCESSES \| VBOX_GUEST_STAT_THREADS \| VBOX_GUEST_STAT_HANDLES
210	\| VBOX_GUEST_STAT_MEM_COMMIT_TOTAL \| VBOX_GUEST_STAT_MEM_KERNEL_TOTAL
211	\| VBOX_GUEST_STAT_MEM_KERNEL_PAGED \| VBOX_GUEST_STAT_MEM_KERNEL_NONPAGED
212	\| VBOX_GUEST_STAT_MEM_SYSTEM_CACHE;
213	}
214	else
215	VGSvcVerbose(3, "vgsvcVMStatsReport: GetPerformanceInfo failed with %d\n", GetLastError());
216	}
217
218	/* Query CPU load information */
219	uint32_t cbStruct = systemInfo.dwNumberOfProcessors * sizeof(SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION);
220	PSYSTEM_PROCESSOR_PERFORMANCE_INFORMATION pProcInfo;
221	pProcInfo = (PSYSTEM_PROCESSOR_PERFORMANCE_INFORMATION)RTMemAlloc(cbStruct);
222	if (!pProcInfo)
223	return;
224
225	/* Unfortunately GetSystemTimes is XP SP1 and up only, so we need to use the semi-undocumented NtQuerySystemInformation */
226	bool fCpuInfoAvail = false;
227	DWORD cbReturned;
228	NTSTATUS rcNt = g_VMStat.pfnNtQuerySystemInformation(SystemProcessorPerformanceInformation, pProcInfo, cbStruct, &cbReturned);
229	if ( !rcNt
230	&& cbReturned == cbStruct)
231	{
232	for (uint32_t i = 0; i < systemInfo.dwNumberOfProcessors; i++)
233	{
234	if (i >= VMM_MAX_CPU_COUNT)
235	{
236	VGSvcVerbose(3, "vgsvcVMStatsReport: skipping information for CPUs %u..%u\n", i, systemInfo.dwNumberOfProcessors);
237	break;
238	}
239
240	if (g_VMStat.au64LastCpuLoad_Kernel[i] == 0)
241	{
242	/* first time */
243	g_VMStat.au64LastCpuLoad_Idle[i] = pProcInfo[i].IdleTime.QuadPart;
244	g_VMStat.au64LastCpuLoad_Kernel[i] = pProcInfo[i].KernelTime.QuadPart;
245	g_VMStat.au64LastCpuLoad_User[i] = pProcInfo[i].UserTime.QuadPart;
246
247	Sleep(250);
248
249	rcNt = g_VMStat.pfnNtQuerySystemInformation(SystemProcessorPerformanceInformation, pProcInfo, cbStruct, &cbReturned);
250	Assert(!rcNt);
251	}
252
253	uint64_t deltaIdle = (pProcInfo[i].IdleTime.QuadPart - g_VMStat.au64LastCpuLoad_Idle[i]);
254	uint64_t deltaKernel = (pProcInfo[i].KernelTime.QuadPart - g_VMStat.au64LastCpuLoad_Kernel[i]);
255	uint64_t deltaUser = (pProcInfo[i].UserTime.QuadPart - g_VMStat.au64LastCpuLoad_User[i]);
256	deltaKernel -= deltaIdle; /* idle time is added to kernel time */
257	uint64_t ullTotalTime = deltaIdle + deltaKernel + deltaUser;
258	if (ullTotalTime == 0) /* Prevent division through zero. */
259	ullTotalTime = 1;
260
261	req.guestStats.u32CpuLoad_Idle = (uint32_t)(deltaIdle * 100 / ullTotalTime);
262	req.guestStats.u32CpuLoad_Kernel = (uint32_t)(deltaKernel* 100 / ullTotalTime);
263	req.guestStats.u32CpuLoad_User = (uint32_t)(deltaUser * 100 / ullTotalTime);
264
265	req.guestStats.u32StatCaps \|= VBOX_GUEST_STAT_CPU_LOAD_IDLE
266	\| VBOX_GUEST_STAT_CPU_LOAD_KERNEL
267	\| VBOX_GUEST_STAT_CPU_LOAD_USER;
268	req.guestStats.u32CpuId = i;
269	fCpuInfoAvail = true;
270	int rc = VbglR3StatReport(&req);
271	if (RT_SUCCESS(rc))
272	VGSvcVerbose(3, "vgsvcVMStatsReport: new statistics (CPU %u) reported successfully!\n", i);
273	else
274	VGSvcVerbose(3, "vgsvcVMStatsReport: VbglR3StatReport failed with rc=%Rrc\n", rc);
275
276	g_VMStat.au64LastCpuLoad_Idle[i] = pProcInfo[i].IdleTime.QuadPart;
277	g_VMStat.au64LastCpuLoad_Kernel[i] = pProcInfo[i].KernelTime.QuadPart;
278	g_VMStat.au64LastCpuLoad_User[i] = pProcInfo[i].UserTime.QuadPart;
279	}
280	}
281	RTMemFree(pProcInfo);
282
283	if (!fCpuInfoAvail)
284	{
285	VGSvcVerbose(3, "vgsvcVMStatsReport: CPU info not available!\n");
286	int rc = VbglR3StatReport(&req);
287	if (RT_SUCCESS(rc))
288	VGSvcVerbose(3, "vgsvcVMStatsReport: new statistics reported successfully!\n");
289	else
290	VGSvcVerbose(3, "vgsvcVMStatsReport: stats report failed with rc=%Rrc\n", rc);
291	}
292
293	#elif defined(RT_OS_LINUX)
294	VMMDevReportGuestStats req;
295	RT_ZERO(req);
296	PRTSTREAM pStrm;
297	char szLine[256];
298	char *psz;
299
300	int rc = RTStrmOpen("/proc/meminfo", "r", &pStrm);
301	if (RT_SUCCESS(rc))
302	{
303	uint64_t u64Kb;
304	uint64_t u64Total = 0, u64Free = 0, u64Buffers = 0, u64Cached = 0, u64PagedTotal = 0;
305	for (;;)
306	{
307	rc = RTStrmGetLine(pStrm, szLine, sizeof(szLine));
308	if (RT_FAILURE(rc))
309	break;
310	if (strstr(szLine, "MemTotal:") == szLine)
311	{
312	rc = RTStrToUInt64Ex(RTStrStripL(&szLine[9]), &psz, 0, &u64Kb);
313	if (RT_SUCCESS(rc))
314	u64Total = u64Kb * _1K;
315	}
316	else if (strstr(szLine, "MemFree:") == szLine)
317	{
318	rc = RTStrToUInt64Ex(RTStrStripL(&szLine[8]), &psz, 0, &u64Kb);
319	if (RT_SUCCESS(rc))
320	u64Free = u64Kb * _1K;
321	}
322	else if (strstr(szLine, "Buffers:") == szLine)
323	{
324	rc = RTStrToUInt64Ex(RTStrStripL(&szLine[8]), &psz, 0, &u64Kb);
325	if (RT_SUCCESS(rc))
326	u64Buffers = u64Kb * _1K;
327	}
328	else if (strstr(szLine, "Cached:") == szLine)
329	{
330	rc = RTStrToUInt64Ex(RTStrStripL(&szLine[7]), &psz, 0, &u64Kb);
331	if (RT_SUCCESS(rc))
332	u64Cached = u64Kb * _1K;
333	}
334	else if (strstr(szLine, "SwapTotal:") == szLine)
335	{
336	rc = RTStrToUInt64Ex(RTStrStripL(&szLine[10]), &psz, 0, &u64Kb);
337	if (RT_SUCCESS(rc))
338	u64PagedTotal = u64Kb * _1K;
339	}
340	}
341	req.guestStats.u32PhysMemTotal = u64Total / _4K;
342	req.guestStats.u32PhysMemAvail = (u64Free + u64Buffers + u64Cached) / _4K;
343	req.guestStats.u32MemSystemCache = (u64Buffers + u64Cached) / _4K;
344	req.guestStats.u32PageFileSize = u64PagedTotal / _4K;
345	RTStrmClose(pStrm);
346	}
347	else
348	VGSvcVerbose(3, "vgsvcVMStatsReport: memory info not available!\n");
349
350	req.guestStats.u32PageSize = getpagesize();
351	req.guestStats.u32StatCaps = VBOX_GUEST_STAT_PHYS_MEM_TOTAL
352	\| VBOX_GUEST_STAT_PHYS_MEM_AVAIL
353	\| VBOX_GUEST_STAT_MEM_SYSTEM_CACHE
354	\| VBOX_GUEST_STAT_PAGE_FILE_SIZE;
355	# ifdef VBOX_WITH_MEMBALLOON
356	req.guestStats.u32PhysMemBalloon = VGSvcBalloonQueryPages(_4K);
357	req.guestStats.u32StatCaps \|= VBOX_GUEST_STAT_PHYS_MEM_BALLOON;
358	# else
359	req.guestStats.u32PhysMemBalloon = 0;
360	# endif
361
362
363	/** @todo req.guestStats.u32Threads */
364	/** @todo req.guestStats.u32Processes */
365	/* req.guestStats.u32Handles doesn't make sense here. */
366	/** @todo req.guestStats.u32MemoryLoad */
367	/** @todo req.guestStats.u32MemCommitTotal */
368	/** @todo req.guestStats.u32MemKernelTotal */
369	/** @todo req.guestStats.u32MemKernelPaged, make any sense? = u32MemKernelTotal? */
370	/** @todo req.guestStats.u32MemKernelNonPaged, make any sense? = 0? */
371
372	bool fCpuInfoAvail = false;
373	rc = RTStrmOpen("/proc/stat", "r", &pStrm);
374	if (RT_SUCCESS(rc))
375	{
376	for (;;)
377	{
378	rc = RTStrmGetLine(pStrm, szLine, sizeof(szLine));
379	if (RT_FAILURE(rc))
380	break;
381	if ( strstr(szLine, "cpu") == szLine
382	&& strlen(szLine) > 3
383	&& RT_C_IS_DIGIT(szLine[3]))
384	{
385	uint32_t u32CpuId;
386	rc = RTStrToUInt32Ex(&szLine[3], &psz, 0, &u32CpuId);
387	if (u32CpuId < VMM_MAX_CPU_COUNT)
388	{
389	uint64_t u64User = 0;
390	if (RT_SUCCESS(rc))
391	rc = RTStrToUInt64Ex(RTStrStripL(psz), &psz, 0, &u64User);
392
393	uint64_t u64Nice = 0;
394	if (RT_SUCCESS(rc))
395	rc = RTStrToUInt64Ex(RTStrStripL(psz), &psz, 0, &u64Nice);
396
397	uint64_t u64System = 0;
398	if (RT_SUCCESS(rc))
399	rc = RTStrToUInt64Ex(RTStrStripL(psz), &psz, 0, &u64System);
400
401	uint64_t u64Idle = 0;
402	if (RT_SUCCESS(rc))
403	rc = RTStrToUInt64Ex(RTStrStripL(psz), &psz, 0, &u64Idle);
404
405	uint64_t u64DeltaIdle = u64Idle - g_VMStat.au64LastCpuLoad_Idle[u32CpuId];
406	uint64_t u64DeltaSystem = u64System - g_VMStat.au64LastCpuLoad_Kernel[u32CpuId];
407	uint64_t u64DeltaUser = u64User - g_VMStat.au64LastCpuLoad_User[u32CpuId];
408	uint64_t u64DeltaNice = u64Nice - g_VMStat.au64LastCpuLoad_Nice[u32CpuId];
409
410	uint64_t u64DeltaAll = u64DeltaIdle
411	+ u64DeltaSystem
412	+ u64DeltaUser
413	+ u64DeltaNice;
414	if (u64DeltaAll == 0) /* Prevent division through zero. */
415	u64DeltaAll = 1;
416
417	g_VMStat.au64LastCpuLoad_Idle[u32CpuId] = u64Idle;
418	g_VMStat.au64LastCpuLoad_Kernel[u32CpuId] = u64System;
419	g_VMStat.au64LastCpuLoad_User[u32CpuId] = u64User;
420	g_VMStat.au64LastCpuLoad_Nice[u32CpuId] = u64Nice;
421
422	req.guestStats.u32CpuLoad_Idle = (uint32_t)(u64DeltaIdle * 100 / u64DeltaAll);
423	req.guestStats.u32CpuLoad_Kernel = (uint32_t)(u64DeltaSystem * 100 / u64DeltaAll);
424	req.guestStats.u32CpuLoad_User = (uint32_t)((u64DeltaUser
425	+ u64DeltaNice) * 100 / u64DeltaAll);
426	req.guestStats.u32StatCaps \|= VBOX_GUEST_STAT_CPU_LOAD_IDLE
427	\| VBOX_GUEST_STAT_CPU_LOAD_KERNEL
428	\| VBOX_GUEST_STAT_CPU_LOAD_USER;
429	req.guestStats.u32CpuId = u32CpuId;
430	fCpuInfoAvail = true;
431	rc = VbglR3StatReport(&req);
432	if (RT_SUCCESS(rc))
433	VGSvcVerbose(3, "vgsvcVMStatsReport: new statistics (CPU %u) reported successfully!\n", u32CpuId);
434	else
435	VGSvcVerbose(3, "vgsvcVMStatsReport: stats report failed with rc=%Rrc\n", rc);
436	}
437	else
438	VGSvcVerbose(3, "vgsvcVMStatsReport: skipping information for CPU%u\n", u32CpuId);
439	}
440	}
441	RTStrmClose(pStrm);
442	}
443	if (!fCpuInfoAvail)
444	{
445	VGSvcVerbose(3, "vgsvcVMStatsReport: CPU info not available!\n");
446	rc = VbglR3StatReport(&req);
447	if (RT_SUCCESS(rc))
448	VGSvcVerbose(3, "vgsvcVMStatsReport: new statistics reported successfully!\n");
449	else
450	VGSvcVerbose(3, "vgsvcVMStatsReport: stats report failed with rc=%Rrc\n", rc);
451	}
452
453	#elif defined(RT_OS_SOLARIS)
454	VMMDevReportGuestStats req;
455	RT_ZERO(req);
456	kstat_ctl_t *pStatKern = kstat_open();
457	if (pStatKern)
458	{
459	/*
460	* Memory statistics.
461	*/
462	uint64_t u64Total = 0, u64Free = 0, u64Buffers = 0, u64Cached = 0, u64PagedTotal = 0;
463	int rc = -1;
464	kstat_t pStatPages = kstat_lookup(pStatKern, (char )"unix", 0 /* instance /, (char )"system_pages");
465	if (pStatPages)
466	{
467	rc = kstat_read(pStatKern, pStatPages, NULL /* optional-copy-buf */);
468	if (rc != -1)
469	{
470	kstat_named_t *pStat = NULL;
471	pStat = (kstat_named_t )kstat_data_lookup(pStatPages, (char )"pagestotal");
472	if (pStat)
473	u64Total = pStat->value.ul;
474
475	pStat = (kstat_named_t )kstat_data_lookup(pStatPages, (char )"freemem");
476	if (pStat)
477	u64Free = pStat->value.ul;
478	}
479	}
480
481	kstat_t pStatZFS = kstat_lookup(pStatKern, (char )"zfs", 0 /* instance /, (char )"arcstats");
482	if (pStatZFS)
483	{
484	rc = kstat_read(pStatKern, pStatZFS, NULL /* optional-copy-buf */);
485	if (rc != -1)
486	{
487	kstat_named_t pStat = (kstat_named_t )kstat_data_lookup(pStatZFS, (char *)"size");
488	if (pStat)
489	u64Cached = pStat->value.ul;
490	}
491	}
492
493	/*
494	* The vminfo are accumulative counters updated every "N" ticks. Let's get the
495	* number of stat updates so far and use that to divide the swap counter.
496	*/
497	kstat_t pStatInfo = kstat_lookup(pStatKern, (char )"unix", 0 /* instance /, (char )"sysinfo");
498	if (pStatInfo)
499	{
500	sysinfo_t SysInfo;
501	rc = kstat_read(pStatKern, pStatInfo, &SysInfo);
502	if (rc != -1)
503	{
504	kstat_t pStatVMInfo = kstat_lookup(pStatKern, (char )"unix", 0 /* instance /, (char )"vminfo");
505	if (pStatVMInfo)
506	{
507	vminfo_t VMInfo;
508	rc = kstat_read(pStatKern, pStatVMInfo, &VMInfo);
509	if (rc != -1)
510	{
511	Assert(SysInfo.updates != 0);
512	u64PagedTotal = VMInfo.swap_avail / SysInfo.updates;
513	}
514	}
515	}
516	}
517
518	req.guestStats.u32PhysMemTotal = u64Total; /* already in pages */
519	req.guestStats.u32PhysMemAvail = u64Free; /* already in pages */
520	req.guestStats.u32MemSystemCache = u64Cached / _4K;
521	req.guestStats.u32PageFileSize = u64PagedTotal; /* already in pages */
522	/** @todo req.guestStats.u32Threads */
523	/** @todo req.guestStats.u32Processes */
524	/** @todo req.guestStats.u32Handles -- ??? */
525	/** @todo req.guestStats.u32MemoryLoad */
526	/** @todo req.guestStats.u32MemCommitTotal */
527	/** @todo req.guestStats.u32MemKernelTotal */
528	/** @todo req.guestStats.u32MemKernelPaged */
529	/** @todo req.guestStats.u32MemKernelNonPaged */
530	req.guestStats.u32PageSize = getpagesize();
531
532	req.guestStats.u32StatCaps = VBOX_GUEST_STAT_PHYS_MEM_TOTAL
533	\| VBOX_GUEST_STAT_PHYS_MEM_AVAIL
534	\| VBOX_GUEST_STAT_MEM_SYSTEM_CACHE
535	\| VBOX_GUEST_STAT_PAGE_FILE_SIZE;
536	#ifdef VBOX_WITH_MEMBALLOON
537	req.guestStats.u32PhysMemBalloon = VGSvcBalloonQueryPages(_4K);
538	req.guestStats.u32StatCaps \|= VBOX_GUEST_STAT_PHYS_MEM_BALLOON;
539	#else
540	req.guestStats.u32PhysMemBalloon = 0;
541	#endif
542
543	/*
544	* CPU statistics.
545	*/
546	cpu_stat_t StatCPU;
547	RT_ZERO(StatCPU);
548	kstat_t *pStatNode = NULL;
549	uint32_t cCPUs = 0;
550	bool fCpuInfoAvail = false;
551	for (pStatNode = pStatKern->kc_chain; pStatNode != NULL; pStatNode = pStatNode->ks_next)
552	{
553	if (!strcmp(pStatNode->ks_module, "cpu_stat"))
554	{
555	rc = kstat_read(pStatKern, pStatNode, &StatCPU);
556	if (rc == -1)
557	break;
558
559	if (cCPUs < VMM_MAX_CPU_COUNT)
560	{
561	uint64_t u64Idle = StatCPU.cpu_sysinfo.cpu[CPU_IDLE];
562	uint64_t u64User = StatCPU.cpu_sysinfo.cpu[CPU_USER];
563	uint64_t u64System = StatCPU.cpu_sysinfo.cpu[CPU_KERNEL];
564
565	uint64_t u64DeltaIdle = u64Idle - g_VMStat.au64LastCpuLoad_Idle[cCPUs];
566	uint64_t u64DeltaSystem = u64System - g_VMStat.au64LastCpuLoad_Kernel[cCPUs];
567	uint64_t u64DeltaUser = u64User - g_VMStat.au64LastCpuLoad_User[cCPUs];
568
569	uint64_t u64DeltaAll = u64DeltaIdle + u64DeltaSystem + u64DeltaUser;
570	if (u64DeltaAll == 0) /* Prevent division through zero. */
571	u64DeltaAll = 1;
572
573	g_VMStat.au64LastCpuLoad_Idle[cCPUs] = u64Idle;
574	g_VMStat.au64LastCpuLoad_Kernel[cCPUs] = u64System;
575	g_VMStat.au64LastCpuLoad_User[cCPUs] = u64User;
576
577	req.guestStats.u32CpuId = cCPUs;
578	req.guestStats.u32CpuLoad_Idle = (uint32_t)(u64DeltaIdle * 100 / u64DeltaAll);
579	req.guestStats.u32CpuLoad_Kernel = (uint32_t)(u64DeltaSystem * 100 / u64DeltaAll);
580	req.guestStats.u32CpuLoad_User = (uint32_t)(u64DeltaUser * 100 / u64DeltaAll);
581
582	req.guestStats.u32StatCaps \|= VBOX_GUEST_STAT_CPU_LOAD_IDLE
583	\| VBOX_GUEST_STAT_CPU_LOAD_KERNEL
584	\| VBOX_GUEST_STAT_CPU_LOAD_USER;
585	fCpuInfoAvail = true;
586	rc = VbglR3StatReport(&req);
587	if (RT_SUCCESS(rc))
588	VGSvcVerbose(3, "vgsvcVMStatsReport: new statistics (CPU %u) reported successfully!\n", cCPUs);
589	else
590	VGSvcVerbose(3, "vgsvcVMStatsReport: stats report failed with rc=%Rrc\n", rc);
591	cCPUs++;
592	}
593	else
594	VGSvcVerbose(3, "vgsvcVMStatsReport: skipping information for CPU%u\n", cCPUs);
595	}
596	}
597
598	/*
599	* Report whatever statistics were collected.
600	*/
601	if (!fCpuInfoAvail)
602	{
603	VGSvcVerbose(3, "vgsvcVMStatsReport: CPU info not available!\n");
604	rc = VbglR3StatReport(&req);
605	if (RT_SUCCESS(rc))
606	VGSvcVerbose(3, "vgsvcVMStatsReport: new statistics reported successfully!\n");
607	else
608	VGSvcVerbose(3, "vgsvcVMStatsReport: stats report failed with rc=%Rrc\n", rc);
609	}
610
611	kstat_close(pStatKern);
612	}
613
614	#else
615	/** @todo implement for other platforms. */
616
617	#endif
618	}
619
620
621	/**
622	* @interface_method_impl{VBOXSERVICE,pfnWorker}
623	*/
624	DECLCALLBACK(int) vgsvcVMStatsWorker(bool volatile *pfShutdown)
625	{
626	int rc = VINF_SUCCESS;
627
628	/* Start monitoring of the stat event change event. */
629	rc = VbglR3CtlFilterMask(VMMDEV_EVENT_STATISTICS_INTERVAL_CHANGE_REQUEST, 0);
630	if (RT_FAILURE(rc))
631	{
632	VGSvcVerbose(3, "vgsvcVMStatsWorker: VbglR3CtlFilterMask failed with %d\n", rc);
633	return rc;
634	}
635
636	/*
637	* Tell the control thread that it can continue
638	* spawning services.
639	*/
640	RTThreadUserSignal(RTThreadSelf());
641
642	/*
643	* Now enter the loop retrieving runtime data continuously.
644	*/
645	for (;;)
646	{
647	uint32_t fEvents = 0;
648	RTMSINTERVAL cWaitMillies;
649
650	/* Check if an update interval change is pending. */
651	rc = VbglR3WaitEvent(VMMDEV_EVENT_STATISTICS_INTERVAL_CHANGE_REQUEST, 0 /* no wait */, &fEvents);
652	if ( RT_SUCCESS(rc)
653	&& (fEvents & VMMDEV_EVENT_STATISTICS_INTERVAL_CHANGE_REQUEST))
654	VbglR3StatQueryInterval(&g_VMStat.cMsStatInterval);
655
656	if (g_VMStat.cMsStatInterval)
657	{
658	vgsvcVMStatsReport();
659	cWaitMillies = g_VMStat.cMsStatInterval;
660	}
661	else
662	cWaitMillies = 3000;
663
664	/*
665	* Block for a while.
666	*
667	* The event semaphore takes care of ignoring interruptions and it
668	* allows us to implement service wakeup later.
669	*/
670	if (*pfShutdown)
671	break;
672	int rc2 = RTSemEventMultiWait(g_VMStatEvent, cWaitMillies);
673	if (*pfShutdown)
674	break;
675	if (rc2 != VERR_TIMEOUT && RT_FAILURE(rc2))
676	{
677	VGSvcError("vgsvcVMStatsWorker: RTSemEventMultiWait failed; rc2=%Rrc\n", rc2);
678	rc = rc2;
679	break;
680	}
681	}
682
683	/* Cancel monitoring of the stat event change event. */
684	rc = VbglR3CtlFilterMask(0, VMMDEV_EVENT_STATISTICS_INTERVAL_CHANGE_REQUEST);
685	if (RT_FAILURE(rc))
686	VGSvcVerbose(3, "vgsvcVMStatsWorker: VbglR3CtlFilterMask failed with %d\n", rc);
687
688	VGSvcVerbose(3, "VBoxStatsThread: finished statistics change request thread\n");
689	return 0;
690	}
691
692
693	/**
694	* @interface_method_impl{VBOXSERVICE,pfnStop}
695	*/
696	static DECLCALLBACK(void) vgsvcVMStatsStop(void)
697	{
698	RTSemEventMultiSignal(g_VMStatEvent);
699	}
700
701
702	/**
703	* @interface_method_impl{VBOXSERVICE,pfnTerm}
704	*/
705	static DECLCALLBACK(void) vgsvcVMStatsTerm(void)
706	{
707	if (g_VMStatEvent != NIL_RTSEMEVENTMULTI)
708	{
709	RTSemEventMultiDestroy(g_VMStatEvent);
710	g_VMStatEvent = NIL_RTSEMEVENTMULTI;
711	}
712	}
713
714
715	/**
716	* The 'vminfo' service description.
717	*/
718	VBOXSERVICE g_VMStatistics =
719	{
720	/* pszName. */
721	"vmstats",
722	/* pszDescription. */
723	"Virtual Machine Statistics",
724	/* pszUsage. */
725	NULL,
726	/* pszOptions. */
727	NULL,
728	/* methods */
729	VGSvcDefaultPreInit,
730	VGSvcDefaultOption,
731	vgsvcVMStatsInit,
732	vgsvcVMStatsWorker,
733	vgsvcVMStatsStop,
734	vgsvcVMStatsTerm
735	};
736

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source: vbox/trunk/src/VBox/Additions/common/VBoxService/VBoxServiceStats.cpp@ 83958

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