Performance.cpp@ 66900

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1	/* $Id: Performance.cpp 63563 2016-08-16 14:04:28Z vboxsync $ */
2	/** @file
3	* VBox Performance Classes implementation.
4	*/
5
6	/*
7	* Copyright (C) 2008-2016 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	/*
19	* @todo list:
20	*
21	* 1) Detection of erroneous metric names
22	*/
23
24	#ifndef VBOX_COLLECTOR_TEST_CASE
25	#include "VirtualBoxImpl.h"
26	#include "MachineImpl.h"
27	#include "MediumImpl.h"
28	#include "AutoCaller.h"
29	#endif
30	#include "Performance.h"
31	#include "HostNetworkInterfaceImpl.h"
32	#include "netif.h"
33
34	#include <VBox/com/array.h>
35	#include <VBox/com/ptr.h>
36	#include <VBox/com/string.h>
37	#include <VBox/err.h>
38	#include <iprt/string.h>
39	#include <iprt/mem.h>
40	#include <iprt/cpuset.h>
41
42	#include <algorithm>
43
44	#include "Logging.h"
45
46	using namespace pm;
47
48	// Stubs for non-pure virtual methods
49
50	int CollectorHAL::getHostCpuLoad(ULONG * /* user /, ULONG /* kernel /, ULONG /* idle */)
51	{
52	return VERR_NOT_IMPLEMENTED;
53	}
54
55	int CollectorHAL::getProcessCpuLoad(RTPROCESS /* process /, ULONG /* user /, ULONG /* kernel */)
56	{
57	return VERR_NOT_IMPLEMENTED;
58	}
59
60	int CollectorHAL::getRawHostCpuLoad(uint64_t * /* user /, uint64_t /* kernel /, uint64_t /* idle */)
61	{
62	return VERR_NOT_IMPLEMENTED;
63	}
64
65	int CollectorHAL::getRawHostNetworkLoad(const char * /* name /, uint64_t /* rx /, uint64_t /* tx */)
66	{
67	return VERR_NOT_IMPLEMENTED;
68	}
69
70	int CollectorHAL::getRawHostDiskLoad(const char * /* name /, uint64_t /* disk_ms /, uint64_t /* total_ms */)
71	{
72	return VERR_NOT_IMPLEMENTED;
73	}
74
75	int CollectorHAL::getRawProcessCpuLoad(RTPROCESS /* process /, uint64_t /* user */,
76	uint64_t * /* kernel /, uint64_t /* total */)
77	{
78	return VERR_NOT_IMPLEMENTED;
79	}
80
81	int CollectorHAL::getHostMemoryUsage(ULONG * /* total /, ULONG /* used /, ULONG /* available */)
82	{
83	return VERR_NOT_IMPLEMENTED;
84	}
85
86	int CollectorHAL::getHostFilesystemUsage(const char * /* name /, ULONG /* total /, ULONG /* used */,
87	ULONG * /* available */)
88	{
89	return VERR_NOT_IMPLEMENTED;
90	}
91
92	int CollectorHAL::getHostDiskSize(const char * /* name /, uint64_t /* size */)
93	{
94	return VERR_NOT_IMPLEMENTED;
95	}
96
97	int CollectorHAL::getProcessMemoryUsage(RTPROCESS /* process /, ULONG /* used */)
98	{
99	return VERR_NOT_IMPLEMENTED;
100	}
101
102	int CollectorHAL::getDiskListByFs(const char * /* name /, DiskList& / listUsage /, DiskList& / listLoad */)
103	{
104	return VERR_NOT_IMPLEMENTED;
105	}
106
107	/* Generic implementations */
108
109	int CollectorHAL::getHostCpuMHz(ULONG *mhz)
110	{
111	unsigned cCpus = 0;
112	uint64_t u64TotalMHz = 0;
113	RTCPUSET OnlineSet;
114	RTMpGetOnlineSet(&OnlineSet);
115	for (RTCPUID iCpu = 0; iCpu < RTCPUSET_MAX_CPUS; iCpu++)
116	{
117	Log7(("{%p} " LOG_FN_FMT ": Checking if CPU %d is member of online set...\n", this, __PRETTY_FUNCTION__, (int)iCpu));
118	if (RTCpuSetIsMemberByIndex(&OnlineSet, iCpu))
119	{
120	Log7(("{%p} " LOG_FN_FMT ": Getting frequency for CPU %d...\n", this, __PRETTY_FUNCTION__, (int)iCpu));
121	uint32_t uMHz = RTMpGetCurFrequency(RTMpCpuIdFromSetIndex(iCpu));
122	if (uMHz != 0)
123	{
124	Log7(("{%p} " LOG_FN_FMT ": CPU %d %u MHz\n", this, __PRETTY_FUNCTION__, (int)iCpu, uMHz));
125	u64TotalMHz += uMHz;
126	cCpus++;
127	}
128	}
129	}
130
131	AssertReturn(cCpus, VERR_NOT_IMPLEMENTED);
132	*mhz = (ULONG)(u64TotalMHz / cCpus);
133
134	return VINF_SUCCESS;
135	}
136
137	#ifndef VBOX_COLLECTOR_TEST_CASE
138
139	CollectorGuestQueue::CollectorGuestQueue()
140	{
141	mEvent = NIL_RTSEMEVENT;
142	RTSemEventCreate(&mEvent);
143	}
144
145	CollectorGuestQueue::~CollectorGuestQueue()
146	{
147	RTSemEventDestroy(mEvent);
148	}
149
150	void CollectorGuestQueue::push(CollectorGuestRequest* rq)
151	{
152	RTCLock lock(mLockMtx);
153
154	mQueue.push(rq);
155	RTSemEventSignal(mEvent);
156	}
157
158	CollectorGuestRequest* CollectorGuestQueue::pop()
159	{
160	int rc = VINF_SUCCESS;
161	CollectorGuestRequest* rq = NULL;
162
163	do
164	{
165	{
166	RTCLock lock(mLockMtx);
167
168	if (!mQueue.empty())
169	{
170	rq = mQueue.front();
171	mQueue.pop();
172	}
173	}
174
175	if (rq)
176	return rq;
177	else
178	rc = RTSemEventWaitNoResume(mEvent, RT_INDEFINITE_WAIT);
179	}
180	while (RT_SUCCESS(rc));
181
182	return NULL;
183	}
184
185	HRESULT CGRQEnable::execute()
186	{
187	Assert(mCGuest);
188	return mCGuest->enableInternal(mMask);
189	}
190
191	void CGRQEnable::debugPrint(void aObject, const char aFunction, const char *aText)
192	{
193	NOREF(aObject);
194	NOREF(aFunction);
195	NOREF(aText);
196	Log7(("{%p} " LOG_FN_FMT ": CGRQEnable(mask=0x%x) %s\n", aObject, aFunction, mMask, aText));
197	}
198
199	HRESULT CGRQDisable::execute()
200	{
201	Assert(mCGuest);
202	return mCGuest->disableInternal(mMask);
203	}
204
205	void CGRQDisable::debugPrint(void aObject, const char aFunction, const char *aText)
206	{
207	NOREF(aObject);
208	NOREF(aFunction);
209	NOREF(aText);
210	Log7(("{%p} " LOG_FN_FMT ": CGRQDisable(mask=0x%x) %s\n", aObject, aFunction, mMask, aText));
211	}
212
213	HRESULT CGRQAbort::execute()
214	{
215	return E_ABORT;
216	}
217
218	void CGRQAbort::debugPrint(void aObject, const char aFunction, const char *aText)
219	{
220	NOREF(aObject);
221	NOREF(aFunction);
222	NOREF(aText);
223	Log7(("{%p} " LOG_FN_FMT ": CGRQAbort %s\n", aObject, aFunction, aText));
224	}
225
226	CollectorGuest::CollectorGuest(Machine *machine, RTPROCESS process) :
227	mUnregistered(false), mEnabled(false), mValid(false), mMachine(machine), mProcess(process),
228	mCpuUser(0), mCpuKernel(0), mCpuIdle(0),
229	mMemTotal(0), mMemFree(0), mMemBalloon(0), mMemShared(0), mMemCache(0), mPageTotal(0),
230	mAllocVMM(0), mFreeVMM(0), mBalloonedVMM(0), mSharedVMM(0), mVmNetRx(0), mVmNetTx(0)
231	{
232	Assert(mMachine);
233	/* cannot use ComObjPtr<Machine> in Performance.h, do it manually */
234	mMachine->AddRef();
235	}
236
237	CollectorGuest::~CollectorGuest()
238	{
239	/* cannot use ComObjPtr<Machine> in Performance.h, do it manually */
240	mMachine->Release();
241	// Assert(!cEnabled); why?
242	}
243
244	int CollectorGuest::enableVMMStats(bool mCollectVMMStats)
245	{
246	HRESULT ret = S_OK;
247
248	if (mGuest)
249	{
250	/** @todo replace this with a direct call to mGuest in trunk! */
251	AutoCaller autoCaller(mMachine);
252	if (FAILED(autoCaller.rc())) return autoCaller.rc();
253
254	ComPtr<IInternalSessionControl> directControl;
255
256	ret = mMachine->i_getDirectControl(&directControl);
257	if (ret != S_OK)
258	return ret;
259
260	/* enable statistics collection; this is a remote call (!) */
261	ret = directControl->EnableVMMStatistics(mCollectVMMStats);
262	Log7(("{%p} " LOG_FN_FMT ": %sable VMM stats (%s)\n",
263	this, __PRETTY_FUNCTION__, mCollectVMMStats ? "En" : "Dis", SUCCEEDED(ret) ? "success" : "failed"));
264	}
265
266	return ret;
267	}
268
269	int CollectorGuest::enable(ULONG mask)
270	{
271	return enqueueRequest(new CGRQEnable(mask));
272	}
273
274	int CollectorGuest::disable(ULONG mask)
275	{
276	return enqueueRequest(new CGRQDisable(mask));
277	}
278
279	HRESULT CollectorGuest::enableInternal(ULONG mask)
280	{
281	HRESULT ret = S_OK;
282
283	if ((mEnabled & mask) == mask)
284	return E_UNEXPECTED;
285
286	if (!mEnabled)
287	{
288	/* Must make sure that the machine object does not get uninitialized
289	* in the middle of enabling this collector. Causes timing-related
290	* behavior otherwise, which we don't want. In particular the
291	* GetRemoteConsole call below can hang if the VM didn't completely
292	* terminate (the VM processes stop processing events shortly before
293	* closing the session). This avoids the hang. */
294	AutoCaller autoCaller(mMachine);
295	if (FAILED(autoCaller.rc())) return autoCaller.rc();
296
297	mMachineName = mMachine->i_getName();
298
299	ComPtr<IInternalSessionControl> directControl;
300
301	ret = mMachine->i_getDirectControl(&directControl);
302	if (ret != S_OK)
303	return ret;
304
305	/* get the associated console; this is a remote call (!) */
306	ret = directControl->COMGETTER(RemoteConsole)(mConsole.asOutParam());
307	if (ret != S_OK)
308	return ret;
309
310	ret = mConsole->COMGETTER(Guest)(mGuest.asOutParam());
311	if (ret == S_OK)
312	{
313	ret = mGuest->COMSETTER(StatisticsUpdateInterval)(1 /* 1 sec */);
314	Log7(("{%p} " LOG_FN_FMT ": Set guest statistics update interval to 1 sec (%s)\n",
315	this, __PRETTY_FUNCTION__, SUCCEEDED(ret) ? "success" : "failed"));
316	}
317	}
318	if ((mask & VMSTATS_VMM_RAM) == VMSTATS_VMM_RAM)
319	enableVMMStats(true);
320	mEnabled \|= mask;
321
322	return ret;
323	}
324
325	int CollectorGuest::disableInternal(ULONG mask)
326	{
327	if (!(mEnabled & mask))
328	return E_UNEXPECTED;
329
330	if ((mask & VMSTATS_VMM_RAM) == VMSTATS_VMM_RAM)
331	enableVMMStats(false);
332	mEnabled &= ~mask;
333	if (!mEnabled)
334	{
335	Assert(mGuest && mConsole);
336	HRESULT ret = mGuest->COMSETTER(StatisticsUpdateInterval)(0 /* off */);
337	NOREF(ret);
338	Log7(("{%p} " LOG_FN_FMT ": Set guest statistics update interval to 0 sec (%s)\n",
339	this, __PRETTY_FUNCTION__, SUCCEEDED(ret) ? "success" : "failed"));
340	invalidate(VMSTATS_ALL);
341	}
342
343	return S_OK;
344	}
345
346	int CollectorGuest::enqueueRequest(CollectorGuestRequest *aRequest)
347	{
348	if (mManager)
349	{
350	aRequest->setGuest(this);
351	return mManager->enqueueRequest(aRequest);
352	}
353
354	Log7(("{%p} " LOG_FN_FMT ": Attempted enqueue guest request when mManager is null\n", this, __PRETTY_FUNCTION__));
355	return E_POINTER;
356	}
357
358	void CollectorGuest::updateStats(ULONG aValidStats, ULONG aCpuUser,
359	ULONG aCpuKernel, ULONG aCpuIdle,
360	ULONG aMemTotal, ULONG aMemFree,
361	ULONG aMemBalloon, ULONG aMemShared,
362	ULONG aMemCache, ULONG aPageTotal,
363	ULONG aAllocVMM, ULONG aFreeVMM,
364	ULONG aBalloonedVMM, ULONG aSharedVMM,
365	ULONG aVmNetRx, ULONG aVmNetTx)
366	{
367	if ((aValidStats & VMSTATS_GUEST_CPULOAD) == VMSTATS_GUEST_CPULOAD)
368	{
369	mCpuUser = aCpuUser;
370	mCpuKernel = aCpuKernel,
371	mCpuIdle = aCpuIdle;
372	}
373	if ((aValidStats & VMSTATS_GUEST_RAMUSAGE) == VMSTATS_GUEST_RAMUSAGE)
374	{
375	mMemTotal = aMemTotal;
376	mMemFree = aMemFree;
377	mMemBalloon = aMemBalloon;
378	mMemShared = aMemShared;
379	mMemCache = aMemCache;
380	mPageTotal = aPageTotal;
381	}
382	if ((aValidStats & VMSTATS_VMM_RAM) == VMSTATS_VMM_RAM)
383	{
384	mAllocVMM = aAllocVMM;
385	mFreeVMM = aFreeVMM;
386	mBalloonedVMM = aBalloonedVMM;
387	mSharedVMM = aSharedVMM;
388	}
389	if ((aValidStats & VMSTATS_NET_RATE) == VMSTATS_NET_RATE)
390	{
391	mVmNetRx = aVmNetRx;
392	mVmNetTx = aVmNetTx;
393	}
394	mValid = aValidStats;
395	}
396
397	CollectorGuestManager::CollectorGuestManager()
398	: mVMMStatsProvider(NULL), mGuestBeingCalled(NULL)
399	{
400	int rc = RTThreadCreate(&mThread, CollectorGuestManager::requestProcessingThread,
401	this, 0, RTTHREADTYPE_MAIN_WORKER, RTTHREADFLAGS_WAITABLE,
402	"CGMgr");
403	NOREF(rc);
404	Log7(("{%p} " LOG_FN_FMT ": RTThreadCreate returned %Rrc (mThread=%p)\n", this, __PRETTY_FUNCTION__, rc, mThread));
405	}
406
407	CollectorGuestManager::~CollectorGuestManager()
408	{
409	Assert(mGuests.size() == 0);
410	int rcThread = 0;
411	int rc = enqueueRequest(new CGRQAbort());
412	if (SUCCEEDED(rc))
413	{
414	/* We wait only if we were able to put the abort request to a queue */
415	Log7(("{%p} " LOG_FN_FMT ": Waiting for CGM request processing thread to stop...\n", this, __PRETTY_FUNCTION__));
416	rc = RTThreadWait(mThread, 1000 /* 1 sec */, &rcThread);
417	Log7(("{%p} " LOG_FN_FMT ": RTThreadWait returned %u (thread exit code: %u)\n", this, __PRETTY_FUNCTION__, rc, rcThread));
418	}
419	}
420
421	void CollectorGuestManager::registerGuest(CollectorGuest* pGuest)
422	{
423	pGuest->setManager(this);
424	mGuests.push_back(pGuest);
425	/*
426	* If no VMM stats provider was elected previously than this is our
427	* candidate.
428	*/
429	if (!mVMMStatsProvider)
430	mVMMStatsProvider = pGuest;
431	Log7(("{%p} " LOG_FN_FMT ": Registered guest=%p provider=%p\n", this, __PRETTY_FUNCTION__, pGuest, mVMMStatsProvider));
432	}
433
434	void CollectorGuestManager::unregisterGuest(CollectorGuest* pGuest)
435	{
436	int rc = S_OK;
437
438	Log7(("{%p} " LOG_FN_FMT ": About to unregister guest=%p provider=%p\n", this, __PRETTY_FUNCTION__, pGuest, mVMMStatsProvider));
439	//mGuests.remove(pGuest); => destroyUnregistered()
440	pGuest->unregister();
441	if (pGuest == mVMMStatsProvider)
442	{
443	/* This was our VMM stats provider, it is time to re-elect */
444	CollectorGuestList::iterator it;
445	/* Assume that nobody can provide VMM stats */
446	mVMMStatsProvider = NULL;
447
448	for (it = mGuests.begin(); it != mGuests.end(); ++it)
449	{
450	/* Skip unregistered as they are about to be destroyed */
451	if ((*it)->isUnregistered())
452	continue;
453
454	if ((*it)->isEnabled())
455	{
456	/* Found the guest already collecting stats, elect it */
457	mVMMStatsProvider = *it;
458	rc = mVMMStatsProvider->enqueueRequest(new CGRQEnable(VMSTATS_VMM_RAM));
459	if (FAILED(rc))
460	{
461	/* This is not a good candidate -- try to find another */
462	mVMMStatsProvider = NULL;
463	continue;
464	}
465	break;
466	}
467	}
468	if (!mVMMStatsProvider)
469	{
470	/* If nobody collects stats, take the first registered */
471	for (it = mGuests.begin(); it != mGuests.end(); ++it)
472	{
473	/* Skip unregistered as they are about to be destroyed */
474	if ((*it)->isUnregistered())
475	continue;
476
477	mVMMStatsProvider = *it;
478	//mVMMStatsProvider->enable(VMSTATS_VMM_RAM);
479	rc = mVMMStatsProvider->enqueueRequest(new CGRQEnable(VMSTATS_VMM_RAM));
480	if (SUCCEEDED(rc))
481	break;
482	/* This was not a good candidate -- try to find another */
483	mVMMStatsProvider = NULL;
484	}
485	}
486	}
487	Log7(("{%p} " LOG_FN_FMT ": LEAVE new provider=%p\n", this, __PRETTY_FUNCTION__, mVMMStatsProvider));
488	}
489
490	void CollectorGuestManager::destroyUnregistered()
491	{
492	CollectorGuestList::iterator it;
493
494	for (it = mGuests.begin(); it != mGuests.end();)
495	if ((*it)->isUnregistered())
496	{
497	delete *it;
498	it = mGuests.erase(it);
499	Log7(("{%p} " LOG_FN_FMT ": Number of guests after erasing unregistered is %d\n",
500	this, __PRETTY_FUNCTION__, mGuests.size()));
501	}
502	else
503	++it;
504	}
505
506	int CollectorGuestManager::enqueueRequest(CollectorGuestRequest *aRequest)
507	{
508	#ifdef DEBUG
509	aRequest->debugPrint(this, __PRETTY_FUNCTION__, "added to CGM queue");
510	#endif /* DEBUG */
511	/*
512	* It is very unlikely that we will get high frequency calls to configure
513	* guest metrics collection, so we rely on this fact to detect blocked
514	* guests. If the guest has not finished processing the previous request
515	* after half a second we consider it blocked.
516	*/
517	if (aRequest->getGuest() && aRequest->getGuest() == mGuestBeingCalled)
518	{
519	/*
520	* Before we can declare a guest blocked we need to wait for a while
521	* and then check again as it may never had a chance to process
522	* the previous request. Half a second is an eternity for processes
523	* and is barely noticable by humans.
524	*/
525	Log7(("{%p} " LOG_FN_FMT ": Suspecting %s is stalled. Waiting for .5 sec...\n",
526	this, __PRETTY_FUNCTION__, aRequest->getGuest()->getVMName().c_str()));
527	RTThreadSleep(500 /* ms */);
528	if (aRequest->getGuest() == mGuestBeingCalled) {
529	Log7(("{%p} " LOG_FN_FMT ": Request processing stalled for %s\n",
530	this, __PRETTY_FUNCTION__, aRequest->getGuest()->getVMName().c_str()));
531	/* Request execution got stalled for this guest -- report an error */
532	return E_FAIL;
533	}
534	}
535	mQueue.push(aRequest);
536	return S_OK;
537	}
538
539	/* static */
540	DECLCALLBACK(int) CollectorGuestManager::requestProcessingThread(RTTHREAD /* aThread /, void pvUser)
541	{
542	CollectorGuestRequest *pReq;
543	CollectorGuestManager mgr = static_cast<CollectorGuestManager>(pvUser);
544
545	HRESULT rc = S_OK;
546
547	Log7(("{%p} " LOG_FN_FMT ": Starting request processing loop...\n", mgr, __PRETTY_FUNCTION__));
548	while ((pReq = mgr->mQueue.pop()) != NULL)
549	{
550	#ifdef DEBUG
551	pReq->debugPrint(mgr, __PRETTY_FUNCTION__, "is being executed...");
552	#endif /* DEBUG */
553	mgr->mGuestBeingCalled = pReq->getGuest();
554	rc = pReq->execute();
555	mgr->mGuestBeingCalled = NULL;
556	delete pReq;
557	if (rc == E_ABORT)
558	break;
559	if (FAILED(rc))
560	Log7(("{%p} " LOG_FN_FMT ": request::execute returned %u\n", mgr, __PRETTY_FUNCTION__, rc));
561	}
562	Log7(("{%p} " LOG_FN_FMT ": Exiting request processing loop... rc=%u\n", mgr, __PRETTY_FUNCTION__, rc));
563
564	return VINF_SUCCESS;
565	}
566
567
568	#endif /* !VBOX_COLLECTOR_TEST_CASE */
569
570	bool BaseMetric::collectorBeat(uint64_t nowAt)
571	{
572	if (isEnabled())
573	{
574	if (mLastSampleTaken == 0)
575	{
576	mLastSampleTaken = nowAt;
577	Log4(("{%p} " LOG_FN_FMT ": Collecting %s for obj(%p)...\n",
578	this, __PRETTY_FUNCTION__, getName(), (void *)mObject));
579	return true;
580	}
581	/*
582	* We use low resolution timers which may fire just a little bit early.
583	* We compensate for that by jumping into the future by several
584	* milliseconds (see @bugref{6345}).
585	*/
586	if (nowAt - mLastSampleTaken + PM_SAMPLER_PRECISION_MS >= mPeriod * 1000)
587	{
588	/*
589	* We don't want the beat to drift. This is why the timestamp of
590	* the last taken sample is not the actual time but the time we
591	* should have taken the measurement at.
592	*/
593	mLastSampleTaken += mPeriod * 1000;
594	Log4(("{%p} " LOG_FN_FMT ": Collecting %s for obj(%p)...\n",
595	this, __PRETTY_FUNCTION__, getName(), (void *)mObject));
596	return true;
597	}
598	Log4(("{%p} " LOG_FN_FMT ": Enabled but too early to collect %s for obj(%p)\n",
599	this, __PRETTY_FUNCTION__, getName(), (void *)mObject));
600	}
601	return false;
602	}
603
604	void HostCpuLoad::init(ULONG period, ULONG length)
605	{
606	mPeriod = period;
607	mLength = length;
608	mUser->init(mLength);
609	mKernel->init(mLength);
610	mIdle->init(mLength);
611	}
612
613	void HostCpuLoad::collect()
614	{
615	ULONG user, kernel, idle;
616	int rc = mHAL->getHostCpuLoad(&user, &kernel, &idle);
617	if (RT_SUCCESS(rc))
618	{
619	mUser->put(user);
620	mKernel->put(kernel);
621	mIdle->put(idle);
622	}
623	}
624
625	void HostCpuLoadRaw::init(ULONG period, ULONG length)
626	{
627	HostCpuLoad::init(period, length);
628	mHAL->getRawHostCpuLoad(&mUserPrev, &mKernelPrev, &mIdlePrev);
629	}
630
631	void HostCpuLoadRaw::preCollect(CollectorHints& hints, uint64_t /* iTick */)
632	{
633	hints.collectHostCpuLoad();
634	}
635
636	void HostCpuLoadRaw::collect()
637	{
638	uint64_t user, kernel, idle;
639	uint64_t userDiff, kernelDiff, idleDiff, totalDiff;
640
641	int rc = mHAL->getRawHostCpuLoad(&user, &kernel, &idle);
642	if (RT_SUCCESS(rc))
643	{
644	userDiff = user - mUserPrev;
645	kernelDiff = kernel - mKernelPrev;
646	idleDiff = idle - mIdlePrev;
647	totalDiff = userDiff + kernelDiff + idleDiff;
648
649	if (totalDiff == 0)
650	{
651	/* This is only possible if none of counters has changed! */
652	LogFlowThisFunc(("Impossible! User, kernel and idle raw "
653	"counters has not changed since last sample.\n" ));
654	mUser->put(0);
655	mKernel->put(0);
656	mIdle->put(0);
657	}
658	else
659	{
660	mUser->put((ULONG)(PM_CPU_LOAD_MULTIPLIER * userDiff / totalDiff));
661	mKernel->put((ULONG)(PM_CPU_LOAD_MULTIPLIER * kernelDiff / totalDiff));
662	mIdle->put((ULONG)(PM_CPU_LOAD_MULTIPLIER * idleDiff / totalDiff));
663	}
664
665	mUserPrev = user;
666	mKernelPrev = kernel;
667	mIdlePrev = idle;
668	}
669	}
670
671	#ifndef VBOX_COLLECTOR_TEST_CASE
672	static bool getLinkSpeed(const char szShortName, uint32_t pSpeed)
673	{
674	NETIFSTATUS enmState = NETIF_S_UNKNOWN;
675	int rc = NetIfGetState(szShortName, &enmState);
676	if (RT_FAILURE(rc))
677	return false;
678	if (enmState != NETIF_S_UP)
679	*pSpeed = 0;
680	else
681	{
682	rc = NetIfGetLinkSpeed(szShortName, pSpeed);
683	if (RT_FAILURE(rc))
684	return false;
685	}
686	return true;
687	}
688
689	void HostNetworkSpeed::init(ULONG period, ULONG length)
690	{
691	mPeriod = period;
692	mLength = length;
693	mLinkSpeed->init(length);
694	/*
695	* Retrieve the link speed now as it may be wrong if the metric was
696	* registered at boot (see @bugref{6613}).
697	*/
698	getLinkSpeed(mShortName.c_str(), &mSpeed);
699	}
700
701	void HostNetworkLoadRaw::init(ULONG period, ULONG length)
702	{
703	mPeriod = period;
704	mLength = length;
705	mRx->init(mLength);
706	mTx->init(mLength);
707	/*
708	* Retrieve the link speed now as it may be wrong if the metric was
709	* registered at boot (see @bugref{6613}).
710	*/
711	uint32_t uSpeedMbit = 65535;
712	if (getLinkSpeed(mShortName.c_str(), &uSpeedMbit))
713	mSpeed = (uint64_t)uSpeedMbit * (1000000/8); /* Convert to bytes/sec */
714	/int rc =/ mHAL->getRawHostNetworkLoad(mShortName.c_str(), &mRxPrev, &mTxPrev);
715	//AssertRC(rc);
716	}
717
718	void HostNetworkLoadRaw::preCollect(CollectorHints& /* hints /, uint64_t / iTick */)
719	{
720	if (RT_FAILURE(mRc))
721	{
722	ComPtr<IHostNetworkInterface> networkInterface;
723	ComPtr<IHost> host = getObject();
724	HRESULT hrc = host->FindHostNetworkInterfaceByName(com::Bstr(mInterfaceName).raw(), networkInterface.asOutParam());
725	if (SUCCEEDED(hrc))
726	{
727	static uint32_t s_tsLogRelLast;
728	uint32_t tsNow = RTTimeProgramSecTS();
729	if ( tsNow < RT_SEC_1HOUR
730	\|\| (tsNow - s_tsLogRelLast >= 60))
731	{
732	s_tsLogRelLast = tsNow;
733	LogRel(("Failed to collect network metrics for %s: %Rrc (%d). Max one msg/min.\n", mInterfaceName.c_str(), mRc, mRc));
734	}
735	mRc = VINF_SUCCESS;
736	}
737	}
738	}
739
740	void HostNetworkLoadRaw::collect()
741	{
742	uint64_t rx = mRxPrev;
743	uint64_t tx = mTxPrev;
744
745	if (RT_UNLIKELY(mSpeed * getPeriod() == 0))
746	{
747	LogFlowThisFunc(("Check cable for %s! speed=%llu period=%d.\n", mShortName.c_str(), mSpeed, getPeriod()));
748	/* We do not collect host network metrics for unplugged interfaces! */
749	return;
750	}
751	mRc = mHAL->getRawHostNetworkLoad(mShortName.c_str(), &rx, &tx);
752	if (RT_SUCCESS(mRc))
753	{
754	uint64_t rxDiff = rx - mRxPrev;
755	uint64_t txDiff = tx - mTxPrev;
756
757	mRx->put((ULONG)(PM_NETWORK_LOAD_MULTIPLIER * rxDiff / (mSpeed * getPeriod())));
758	mTx->put((ULONG)(PM_NETWORK_LOAD_MULTIPLIER * txDiff / (mSpeed * getPeriod())));
759
760	mRxPrev = rx;
761	mTxPrev = tx;
762	}
763	else
764	LogFlowThisFunc(("Failed to collect data: %Rrc (%d)."
765	" Will update the list of interfaces...\n", mRc,mRc));
766	}
767	#endif /* !VBOX_COLLECTOR_TEST_CASE */
768
769	void HostDiskLoadRaw::init(ULONG period, ULONG length)
770	{
771	mPeriod = period;
772	mLength = length;
773	mUtil->init(mLength);
774	int rc = mHAL->getRawHostDiskLoad(mDiskName.c_str(), &mDiskPrev, &mTotalPrev);
775	AssertRC(rc);
776	}
777
778	void HostDiskLoadRaw::preCollect(CollectorHints& hints, uint64_t /* iTick */)
779	{
780	hints.collectHostCpuLoad();
781	}
782
783	void HostDiskLoadRaw::collect()
784	{
785	uint64_t disk, total;
786
787	int rc = mHAL->getRawHostDiskLoad(mDiskName.c_str(), &disk, &total);
788	if (RT_SUCCESS(rc))
789	{
790	uint64_t diskDiff = disk - mDiskPrev;
791	uint64_t totalDiff = total - mTotalPrev;
792
793	if (RT_UNLIKELY(totalDiff == 0))
794	{
795	Assert(totalDiff);
796	LogFlowThisFunc(("Improbable! Less than millisecond passed! Disk=%s\n", mDiskName.c_str()));
797	mUtil->put(0);
798	}
799	else if (diskDiff > totalDiff)
800	{
801	/*
802	* It is possible that the disk spent more time than CPU because
803	* CPU measurements are taken during the pre-collect phase. We try
804	* to compensate for than by adding the extra to the next round of
805	* measurements.
806	*/
807	mUtil->put(PM_NETWORK_LOAD_MULTIPLIER);
808	Assert((diskDiff - totalDiff) < mPeriod * 1000);
809	if ((diskDiff - totalDiff) > mPeriod * 1000)
810	{
811	LogRel(("Disk utilization time exceeds CPU time by more"
812	" than the collection period (%llu ms)\n", diskDiff - totalDiff));
813	}
814	else
815	{
816	disk = mDiskPrev + totalDiff;
817	LogFlowThisFunc(("Moved %u milliseconds to the next period.\n", (unsigned)(diskDiff - totalDiff)));
818	}
819	}
820	else
821	{
822	mUtil->put((ULONG)(PM_NETWORK_LOAD_MULTIPLIER * diskDiff / totalDiff));
823	}
824
825	mDiskPrev = disk;
826	mTotalPrev = total;
827	}
828	else
829	LogFlowThisFunc(("Failed to collect data: %Rrc (%d)\n", rc, rc));
830	}
831
832	void HostCpuMhz::init(ULONG period, ULONG length)
833	{
834	mPeriod = period;
835	mLength = length;
836	mMHz->init(mLength);
837	}
838
839	void HostCpuMhz::collect()
840	{
841	ULONG mhz;
842	int rc = mHAL->getHostCpuMHz(&mhz);
843	if (RT_SUCCESS(rc))
844	mMHz->put(mhz);
845	}
846
847	void HostRamUsage::init(ULONG period, ULONG length)
848	{
849	mPeriod = period;
850	mLength = length;
851	mTotal->init(mLength);
852	mUsed->init(mLength);
853	mAvailable->init(mLength);
854	}
855
856	void HostRamUsage::preCollect(CollectorHints& hints, uint64_t /* iTick */)
857	{
858	hints.collectHostRamUsage();
859	}
860
861	void HostRamUsage::collect()
862	{
863	ULONG total, used, available;
864	int rc = mHAL->getHostMemoryUsage(&total, &used, &available);
865	if (RT_SUCCESS(rc))
866	{
867	mTotal->put(total);
868	mUsed->put(used);
869	mAvailable->put(available);
870	}
871	}
872
873	void HostFilesystemUsage::init(ULONG period, ULONG length)
874	{
875	mPeriod = period;
876	mLength = length;
877	mTotal->init(mLength);
878	mUsed->init(mLength);
879	mAvailable->init(mLength);
880	}
881
882	void HostFilesystemUsage::preCollect(CollectorHints& /* hints /, uint64_t / iTick */)
883	{
884	}
885
886	void HostFilesystemUsage::collect()
887	{
888	ULONG total, used, available;
889	int rc = mHAL->getHostFilesystemUsage(mFsName.c_str(), &total, &used, &available);
890	if (RT_SUCCESS(rc))
891	{
892	mTotal->put(total);
893	mUsed->put(used);
894	mAvailable->put(available);
895	}
896	}
897
898	void HostDiskUsage::init(ULONG period, ULONG length)
899	{
900	mPeriod = period;
901	mLength = length;
902	mTotal->init(mLength);
903	}
904
905	void HostDiskUsage::preCollect(CollectorHints& /* hints /, uint64_t / iTick */)
906	{
907	}
908
909	void HostDiskUsage::collect()
910	{
911	uint64_t total;
912	int rc = mHAL->getHostDiskSize(mDiskName.c_str(), &total);
913	if (RT_SUCCESS(rc))
914	mTotal->put((ULONG)(total / _1M));
915	}
916
917	#ifndef VBOX_COLLECTOR_TEST_CASE
918	void HostRamVmm::init(ULONG period, ULONG length)
919	{
920	mPeriod = period;
921	mLength = length;
922	mAllocVMM->init(mLength);
923	mFreeVMM->init(mLength);
924	mBalloonVMM->init(mLength);
925	mSharedVMM->init(mLength);
926	}
927
928	int HostRamVmm::enable()
929	{
930	int rc = S_OK;
931	CollectorGuest *provider = mCollectorGuestManager->getVMMStatsProvider();
932	if (provider)
933	rc = provider->enable(VMSTATS_VMM_RAM);
934	BaseMetric::enable();
935	return rc;
936	}
937
938	int HostRamVmm::disable()
939	{
940	int rc = S_OK;
941	BaseMetric::disable();
942	CollectorGuest *provider = mCollectorGuestManager->getVMMStatsProvider();
943	if (provider)
944	rc = provider->disable(VMSTATS_VMM_RAM);
945	return rc;
946	}
947
948	void HostRamVmm::preCollect(CollectorHints& hints, uint64_t /* iTick */)
949	{
950	hints.collectHostRamVmm();
951	}
952
953	void HostRamVmm::collect()
954	{
955	CollectorGuest *provider = mCollectorGuestManager->getVMMStatsProvider();
956	if (provider)
957	{
958	Log7(("{%p} " LOG_FN_FMT ": provider=%p enabled=%RTbool valid=%RTbool...\n",
959	this, __PRETTY_FUNCTION__, provider, provider->isEnabled(), provider->isValid(VMSTATS_VMM_RAM) ));
960	if (provider->isValid(VMSTATS_VMM_RAM))
961	{
962	/* Provider is ready, get updated stats */
963	mAllocCurrent = provider->getAllocVMM();
964	mFreeCurrent = provider->getFreeVMM();
965	mBalloonedCurrent = provider->getBalloonedVMM();
966	mSharedCurrent = provider->getSharedVMM();
967	provider->invalidate(VMSTATS_VMM_RAM);
968	}
969	/*
970	* Note that if there are no new values from the provider we will use
971	* the ones most recently provided instead of zeros, which is probably
972	* a desirable behavior.
973	*/
974	}
975	else
976	{
977	mAllocCurrent = 0;
978	mFreeCurrent = 0;
979	mBalloonedCurrent = 0;
980	mSharedCurrent = 0;
981	}
982	Log7(("{%p} " LOG_FN_FMT ": mAllocCurrent=%u mFreeCurrent=%u mBalloonedCurrent=%u mSharedCurrent=%u\n",
983	this, __PRETTY_FUNCTION__, mAllocCurrent, mFreeCurrent, mBalloonedCurrent, mSharedCurrent));
984	mAllocVMM->put(mAllocCurrent);
985	mFreeVMM->put(mFreeCurrent);
986	mBalloonVMM->put(mBalloonedCurrent);
987	mSharedVMM->put(mSharedCurrent);
988	}
989	#endif /* !VBOX_COLLECTOR_TEST_CASE */
990
991
992
993	void MachineCpuLoad::init(ULONG period, ULONG length)
994	{
995	mPeriod = period;
996	mLength = length;
997	mUser->init(mLength);
998	mKernel->init(mLength);
999	}
1000
1001	void MachineCpuLoad::collect()
1002	{
1003	ULONG user, kernel;
1004	int rc = mHAL->getProcessCpuLoad(mProcess, &user, &kernel);
1005	if (RT_SUCCESS(rc))
1006	{
1007	mUser->put(user);
1008	mKernel->put(kernel);
1009	}
1010	}
1011
1012	void MachineCpuLoadRaw::preCollect(CollectorHints& hints, uint64_t /* iTick */)
1013	{
1014	hints.collectProcessCpuLoad(mProcess);
1015	}
1016
1017	void MachineCpuLoadRaw::collect()
1018	{
1019	uint64_t processUser, processKernel, hostTotal;
1020
1021	int rc = mHAL->getRawProcessCpuLoad(mProcess, &processUser, &processKernel, &hostTotal);
1022	if (RT_SUCCESS(rc))
1023	{
1024	if (hostTotal == mHostTotalPrev)
1025	{
1026	/* Nearly impossible, but... */
1027	mUser->put(0);
1028	mKernel->put(0);
1029	}
1030	else
1031	{
1032	mUser->put((ULONG)(PM_CPU_LOAD_MULTIPLIER * (processUser - mProcessUserPrev) / (hostTotal - mHostTotalPrev)));
1033	mKernel->put((ULONG)(PM_CPU_LOAD_MULTIPLIER * (processKernel - mProcessKernelPrev ) / (hostTotal - mHostTotalPrev)));
1034	}
1035
1036	mHostTotalPrev = hostTotal;
1037	mProcessUserPrev = processUser;
1038	mProcessKernelPrev = processKernel;
1039	}
1040	}
1041
1042	void MachineRamUsage::init(ULONG period, ULONG length)
1043	{
1044	mPeriod = period;
1045	mLength = length;
1046	mUsed->init(mLength);
1047	}
1048
1049	void MachineRamUsage::preCollect(CollectorHints& hints, uint64_t /* iTick */)
1050	{
1051	hints.collectProcessRamUsage(mProcess);
1052	}
1053
1054	void MachineRamUsage::collect()
1055	{
1056	ULONG used;
1057	int rc = mHAL->getProcessMemoryUsage(mProcess, &used);
1058	if (RT_SUCCESS(rc))
1059	mUsed->put(used);
1060	}
1061
1062
1063	#ifndef VBOX_COLLECTOR_TEST_CASE
1064	void MachineDiskUsage::init(ULONG period, ULONG length)
1065	{
1066	mPeriod = period;
1067	mLength = length;
1068	mUsed->init(mLength);
1069	}
1070
1071	void MachineDiskUsage::preCollect(CollectorHints& /* hints /, uint64_t / iTick */)
1072	{
1073	}
1074
1075	void MachineDiskUsage::collect()
1076	{
1077	ULONG used = 0;
1078
1079	for (MediaList::iterator it = mDisks.begin(); it != mDisks.end(); ++it)
1080	{
1081	ComObjPtr<Medium> pMedium = *it;
1082
1083	/* just in case */
1084	AssertContinue(!pMedium.isNull());
1085
1086	AutoCaller localAutoCaller(pMedium);
1087	if (FAILED(localAutoCaller.rc())) continue;
1088
1089	AutoReadLock local_alock(pMedium COMMA_LOCKVAL_SRC_POS);
1090
1091	used += (ULONG)(pMedium->i_getSize() / _1M);
1092	}
1093
1094	mUsed->put(used);
1095	}
1096
1097	void MachineNetRate::init(ULONG period, ULONG length)
1098	{
1099	mPeriod = period;
1100	mLength = length;
1101
1102	mRx->init(mLength);
1103	mTx->init(mLength);
1104	}
1105
1106	void MachineNetRate::collect()
1107	{
1108	if (mCGuest->isValid(VMSTATS_NET_RATE))
1109	{
1110	mRx->put(mCGuest->getVmNetRx());
1111	mTx->put(mCGuest->getVmNetTx());
1112	mCGuest->invalidate(VMSTATS_NET_RATE);
1113	}
1114	}
1115
1116	int MachineNetRate::enable()
1117	{
1118	int rc = mCGuest->enable(VMSTATS_NET_RATE);
1119	BaseMetric::enable();
1120	return rc;
1121	}
1122
1123	int MachineNetRate::disable()
1124	{
1125	BaseMetric::disable();
1126	return mCGuest->disable(VMSTATS_NET_RATE);
1127	}
1128
1129	void MachineNetRate::preCollect(CollectorHints& hints, uint64_t /* iTick */)
1130	{
1131	hints.collectGuestStats(mCGuest->getProcess());
1132	}
1133
1134	void GuestCpuLoad::init(ULONG period, ULONG length)
1135	{
1136	mPeriod = period;
1137	mLength = length;
1138
1139	mUser->init(mLength);
1140	mKernel->init(mLength);
1141	mIdle->init(mLength);
1142	}
1143
1144	void GuestCpuLoad::preCollect(CollectorHints& hints, uint64_t /* iTick */)
1145	{
1146	hints.collectGuestStats(mCGuest->getProcess());
1147	}
1148
1149	void GuestCpuLoad::collect()
1150	{
1151	if (mCGuest->isValid(VMSTATS_GUEST_CPULOAD))
1152	{
1153	mUser->put((ULONG)(PM_CPU_LOAD_MULTIPLIER * mCGuest->getCpuUser()) / 100);
1154	mKernel->put((ULONG)(PM_CPU_LOAD_MULTIPLIER * mCGuest->getCpuKernel()) / 100);
1155	mIdle->put((ULONG)(PM_CPU_LOAD_MULTIPLIER * mCGuest->getCpuIdle()) / 100);
1156	mCGuest->invalidate(VMSTATS_GUEST_CPULOAD);
1157	}
1158	}
1159
1160	int GuestCpuLoad::enable()
1161	{
1162	int rc = mCGuest->enable(VMSTATS_GUEST_CPULOAD);
1163	BaseMetric::enable();
1164	return rc;
1165	}
1166
1167	int GuestCpuLoad::disable()
1168	{
1169	BaseMetric::disable();
1170	return mCGuest->disable(VMSTATS_GUEST_CPULOAD);
1171	}
1172
1173	void GuestRamUsage::init(ULONG period, ULONG length)
1174	{
1175	mPeriod = period;
1176	mLength = length;
1177
1178	mTotal->init(mLength);
1179	mFree->init(mLength);
1180	mBallooned->init(mLength);
1181	mShared->init(mLength);
1182	mCache->init(mLength);
1183	mPagedTotal->init(mLength);
1184	}
1185
1186	void GuestRamUsage::collect()
1187	{
1188	if (mCGuest->isValid(VMSTATS_GUEST_RAMUSAGE))
1189	{
1190	mTotal->put(mCGuest->getMemTotal());
1191	mFree->put(mCGuest->getMemFree());
1192	mBallooned->put(mCGuest->getMemBalloon());
1193	mShared->put(mCGuest->getMemShared());
1194	mCache->put(mCGuest->getMemCache());
1195	mPagedTotal->put(mCGuest->getPageTotal());
1196	mCGuest->invalidate(VMSTATS_GUEST_RAMUSAGE);
1197	}
1198	}
1199
1200	int GuestRamUsage::enable()
1201	{
1202	int rc = mCGuest->enable(VMSTATS_GUEST_RAMUSAGE);
1203	BaseMetric::enable();
1204	return rc;
1205	}
1206
1207	int GuestRamUsage::disable()
1208	{
1209	BaseMetric::disable();
1210	return mCGuest->disable(VMSTATS_GUEST_RAMUSAGE);
1211	}
1212
1213	void GuestRamUsage::preCollect(CollectorHints& hints, uint64_t /* iTick */)
1214	{
1215	hints.collectGuestStats(mCGuest->getProcess());
1216	}
1217	#endif /* !VBOX_COLLECTOR_TEST_CASE */
1218
1219	void CircularBuffer::init(ULONG ulLength)
1220	{
1221	if (mData)
1222	RTMemFree(mData);
1223	mLength = ulLength;
1224	if (mLength)
1225	mData = (ULONG)RTMemAllocZ(ulLength sizeof(ULONG));
1226	else
1227	mData = NULL;
1228	mWrapped = false;
1229	mEnd = 0;
1230	mSequenceNumber = 0;
1231	}
1232
1233	ULONG CircularBuffer::length()
1234	{
1235	return mWrapped ? mLength : mEnd;
1236	}
1237
1238	void CircularBuffer::put(ULONG value)
1239	{
1240	if (mData)
1241	{
1242	mData[mEnd++] = value;
1243	if (mEnd >= mLength)
1244	{
1245	mEnd = 0;
1246	mWrapped = true;
1247	}
1248	++mSequenceNumber;
1249	}
1250	}
1251
1252	void CircularBuffer::copyTo(ULONG *data)
1253	{
1254	if (mWrapped)
1255	{
1256	memcpy(data, mData + mEnd, (mLength - mEnd) * sizeof(ULONG));
1257	// Copy the wrapped part
1258	if (mEnd)
1259	memcpy(data + (mLength - mEnd), mData, mEnd * sizeof(ULONG));
1260	}
1261	else
1262	memcpy(data, mData, mEnd * sizeof(ULONG));
1263	}
1264
1265	void SubMetric::query(ULONG *data)
1266	{
1267	copyTo(data);
1268	}
1269
1270	void Metric::query(ULONG *data, ULONG count, ULONG *sequenceNumber)
1271	{
1272	ULONG length;
1273	ULONG *tmpData;
1274
1275	length = mSubMetric->length();
1276	*sequenceNumber = mSubMetric->getSequenceNumber() - length;
1277	if (length)
1278	{
1279	tmpData = (ULONG)RTMemAlloc(sizeof(tmpData)*length);
1280	mSubMetric->query(tmpData);
1281	if (mAggregate)
1282	{
1283	*count = 1;
1284	data = (ULONG)RTMemAlloc(sizeof(**data));
1285	**data = mAggregate->compute(tmpData, length);
1286	RTMemFree(tmpData);
1287	}
1288	else
1289	{
1290	*count = length;
1291	*data = tmpData;
1292	}
1293	}
1294	else
1295	{
1296	*count = 0;
1297	*data = 0;
1298	}
1299	}
1300
1301	ULONG AggregateAvg::compute(ULONG *data, ULONG length)
1302	{
1303	uint64_t tmp = 0;
1304	for (ULONG i = 0; i < length; ++i)
1305	tmp += data[i];
1306	return (ULONG)(tmp / length);
1307	}
1308
1309	const char * AggregateAvg::getName()
1310	{
1311	return "avg";
1312	}
1313
1314	ULONG AggregateMin::compute(ULONG *data, ULONG length)
1315	{
1316	ULONG tmp = *data;
1317	for (ULONG i = 0; i < length; ++i)
1318	if (data[i] < tmp)
1319	tmp = data[i];
1320	return tmp;
1321	}
1322
1323	const char * AggregateMin::getName()
1324	{
1325	return "min";
1326	}
1327
1328	ULONG AggregateMax::compute(ULONG *data, ULONG length)
1329	{
1330	ULONG tmp = *data;
1331	for (ULONG i = 0; i < length; ++i)
1332	if (data[i] > tmp)
1333	tmp = data[i];
1334	return tmp;
1335	}
1336
1337	const char * AggregateMax::getName()
1338	{
1339	return "max";
1340	}
1341
1342	Filter::Filter(const std::vector<com::Utf8Str> &metricNames,
1343	const std::vector<ComPtr<IUnknown> > &objects)
1344	{
1345	if (!objects.size())
1346	{
1347	if (metricNames.size())
1348	{
1349	for (size_t i = 0; i < metricNames.size(); ++i)
1350	processMetricList(metricNames[i], ComPtr<IUnknown>());
1351	}
1352	else
1353	processMetricList("*", ComPtr<IUnknown>());
1354	}
1355	else
1356	{
1357	for (size_t i = 0; i < objects.size(); ++i)
1358	switch (metricNames.size())
1359	{
1360	case 0:
1361	processMetricList("*", objects[i]);
1362	break;
1363	case 1:
1364	processMetricList(metricNames[0], objects[i]);
1365	break;
1366	default:
1367	processMetricList(metricNames[i], objects[i]);
1368	break;
1369	}
1370	}
1371	}
1372
1373	Filter::Filter(const com::Utf8Str &name, const ComPtr<IUnknown> &aObject)
1374	{
1375	processMetricList(name, aObject);
1376	}
1377
1378	void Filter::processMetricList(const com::Utf8Str &name, const ComPtr<IUnknown> object)
1379	{
1380	size_t startPos = 0;
1381
1382	for (size_t pos = name.find(",");
1383	pos != com::Utf8Str::npos;
1384	pos = name.find(",", startPos))
1385	{
1386	mElements.push_back(std::make_pair(object, RTCString(name.substr(startPos, pos - startPos).c_str())));
1387	startPos = pos + 1;
1388	}
1389	mElements.push_back(std::make_pair(object, RTCString(name.substr(startPos).c_str())));
1390	}
1391
1392	/**
1393	* The following method was borrowed from stamR3Match (VMM/STAM.cpp) and
1394	* modified to handle the special case of trailing colon in the pattern.
1395	*
1396	* @returns True if matches, false if not.
1397	* @param pszPat Pattern.
1398	* @param pszName Name to match against the pattern.
1399	* @param fSeenColon Seen colon (':').
1400	*/
1401	bool Filter::patternMatch(const char pszPat, const char pszName,
1402	bool fSeenColon)
1403	{
1404	/* ASSUMES ASCII */
1405	for (;;)
1406	{
1407	char chPat = *pszPat;
1408	switch (chPat)
1409	{
1410	default:
1411	if (*pszName != chPat)
1412	return false;
1413	break;
1414
1415	case '*':
1416	{
1417	while ((chPat = ++pszPat) == '' \|\| chPat == '?')
1418	/* nothing */;
1419
1420	/* Handle a special case, the mask terminating with a colon. */
1421	if (chPat == ':')
1422	{
1423	if (!fSeenColon && !pszPat[1])
1424	return !strchr(pszName, ':');
1425	fSeenColon = true;
1426	}
1427
1428	for (;;)
1429	{
1430	char ch = *pszName++;
1431	if ( ch == chPat
1432	&& ( !chPat
1433	\|\| patternMatch(pszPat + 1, pszName, fSeenColon)))
1434	return true;
1435	if (!ch)
1436	return false;
1437	}
1438	/* won't ever get here */
1439	break;
1440	}
1441
1442	case '?':
1443	if (!*pszName)
1444	return false;
1445	break;
1446
1447	/* Handle a special case, the mask terminating with a colon. */
1448	case ':':
1449	if (!fSeenColon && !pszPat[1])
1450	return !*pszName;
1451	if (*pszName != ':')
1452	return false;
1453	fSeenColon = true;
1454	break;
1455
1456	case '\0':
1457	return !*pszName;
1458	}
1459	pszName++;
1460	pszPat++;
1461	}
1462	/* not reached */
1463	}
1464
1465	bool Filter::match(const ComPtr<IUnknown> object, const RTCString &name) const
1466	{
1467	ElementList::const_iterator it;
1468
1469	//Log7(("Filter::match(%p, %s)\n", static_cast<const IUnknown*> (object), name.c_str()));
1470	for (it = mElements.begin(); it != mElements.end(); ++it)
1471	{
1472	//Log7(("...matching against(%p, %s)\n", static_cast<const IUnknown> ((it).first), (*it).second.c_str()));
1473	if ((it).first.isNull() \|\| (it).first == object)
1474	{
1475	// Objects match, compare names
1476	if (patternMatch((*it).second.c_str(), name.c_str()))
1477	{
1478	//LogFlowThisFunc(("...found!\n"));
1479	return true;
1480	}
1481	}
1482	}
1483	//Log7(("...no matches!\n"));
1484	return false;
1485	}
1486	/* vi: set tabstop=4 shiftwidth=4 expandtab: */

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source: vbox/trunk/src/VBox/Main/src-server/Performance.cpp@ 66900

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