PerformanceImpl.cpp@ 30832

Last change on this file since 30832 was 30764, checked in by vboxsync, 14 years ago
back out r63543, r63544 until windows build problems can be solved properly
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1	/* $Id: PerformanceImpl.cpp 30764 2010-07-09 14:12:12Z vboxsync $ */
2
3	/** @file
4	*
5	* VBox Performance API COM Classes implementation
6	*/
7
8	/*
9	* Copyright (C) 2008-2010 Oracle Corporation
10	*
11	* This file is part of VirtualBox Open Source Edition (OSE), as
12	* available from http://www.virtualbox.org. This file is free software;
13	* you can redistribute it and/or modify it under the terms of the GNU
14	* General Public License (GPL) as published by the Free Software
15	* Foundation, in version 2 as it comes in the "COPYING" file of the
16	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
17	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
18	*/
19
20	#include "PerformanceImpl.h"
21
22	#include "AutoCaller.h"
23	#include "Logging.h"
24
25	#include <iprt/process.h>
26
27	#include <VBox/err.h>
28	#include <VBox/settings.h>
29
30	#include <vector>
31	#include <algorithm>
32	#include <functional>
33
34	#include "Performance.h"
35
36	static const char *g_papcszMetricNames[] =
37	{
38	"CPU/Load/User",
39	"CPU/Load/User:avg",
40	"CPU/Load/User:min",
41	"CPU/Load/User:max",
42	"CPU/Load/Kernel",
43	"CPU/Load/Kernel:avg",
44	"CPU/Load/Kernel:min",
45	"CPU/Load/Kernel:max",
46	"CPU/Load/Idle",
47	"CPU/Load/Idle:avg",
48	"CPU/Load/Idle:min",
49	"CPU/Load/Idle:max",
50	"CPU/MHz",
51	"CPU/MHz:avg",
52	"CPU/MHz:min",
53	"CPU/MHz:max",
54	"RAM/Usage/Total",
55	"RAM/Usage/Total:avg",
56	"RAM/Usage/Total:min",
57	"RAM/Usage/Total:max",
58	"RAM/Usage/Used",
59	"RAM/Usage/Used:avg",
60	"RAM/Usage/Used:min",
61	"RAM/Usage/Used:max",
62	"RAM/Usage/Free",
63	"RAM/Usage/Free:avg",
64	"RAM/Usage/Free:min",
65	"RAM/Usage/Free:max",
66	"RAM/VMM/Used",
67	"RAM/VMM/Used:avg",
68	"RAM/VMM/Used:min",
69	"RAM/VMM/Used:max",
70	"RAM/VMM/Free",
71	"RAM/VMM/Free:avg",
72	"RAM/VMM/Free:min",
73	"RAM/VMM/Free:max",
74	"RAM/VMM/Ballooned",
75	"RAM/VMM/Ballooned:avg",
76	"RAM/VMM/Ballooned:min",
77	"RAM/VMM/Ballooned:max",
78	"RAM/VMM/Shared",
79	"RAM/VMM/Shared:avg",
80	"RAM/VMM/Shared:min",
81	"RAM/VMM/Shared:max",
82	"Guest/CPU/Load/User",
83	"Guest/CPU/Load/User:avg",
84	"Guest/CPU/Load/User:min",
85	"Guest/CPU/Load/User:max",
86	"Guest/CPU/Load/Kernel",
87	"Guest/CPU/Load/Kernel:avg",
88	"Guest/CPU/Load/Kernel:min",
89	"Guest/CPU/Load/Kernel:max",
90	"Guest/CPU/Load/Idle",
91	"Guest/CPU/Load/Idle:avg",
92	"Guest/CPU/Load/Idle:min",
93	"Guest/CPU/Load/Idle:max",
94	"Guest/RAM/Usage/Total",
95	"Guest/RAM/Usage/Total:avg",
96	"Guest/RAM/Usage/Total:min",
97	"Guest/RAM/Usage/Total:max",
98	"Guest/RAM/Usage/Free",
99	"Guest/RAM/Usage/Free:avg",
100	"Guest/RAM/Usage/Free:min",
101	"Guest/RAM/Usage/Free:max",
102	"Guest/RAM/Usage/Balloon",
103	"Guest/RAM/Usage/Balloon:avg",
104	"Guest/RAM/Usage/Balloon:min",
105	"Guest/RAM/Usage/Balloon:max",
106	"Guest/RAM/Usage/Shared",
107	"Guest/RAM/Usage/Shared:avg",
108	"Guest/RAM/Usage/Shared:min",
109	"Guest/RAM/Usage/Shared:max",
110	"Guest/RAM/Usage/Cache",
111	"Guest/RAM/Usage/Cache:avg",
112	"Guest/RAM/Usage/Cache:min",
113	"Guest/RAM/Usage/Cache:max",
114	"Guest/Pagefile/Usage/Total",
115	"Guest/Pagefile/Usage/Total:avg",
116	"Guest/Pagefile/Usage/Total:min",
117	"Guest/Pagefile/Usage/Total:max",
118	};
119
120	////////////////////////////////////////////////////////////////////////////////
121	// PerformanceCollector class
122	////////////////////////////////////////////////////////////////////////////////
123
124	// constructor / destructor
125	////////////////////////////////////////////////////////////////////////////////
126
127	PerformanceCollector::PerformanceCollector() : mMagic(0) {}
128
129	PerformanceCollector::~PerformanceCollector() {}
130
131	HRESULT PerformanceCollector::FinalConstruct()
132	{
133	LogFlowThisFunc(("\n"));
134
135	return S_OK;
136	}
137
138	void PerformanceCollector::FinalRelease()
139	{
140	LogFlowThisFunc(("\n"));
141	}
142
143	// public initializer/uninitializer for internal purposes only
144	////////////////////////////////////////////////////////////////////////////////
145
146	/**
147	* Initializes the PerformanceCollector object.
148	*/
149	HRESULT PerformanceCollector::init()
150	{
151	/* Enclose the state transition NotReady->InInit->Ready */
152	AutoInitSpan autoInitSpan(this);
153	AssertReturn(autoInitSpan.isOk(), E_FAIL);
154
155	LogFlowThisFuncEnter();
156
157	HRESULT rc = S_OK;
158
159	m.hal = pm::createHAL();
160
161	/* Let the sampler know it gets a valid collector. */
162	mMagic = MAGIC;
163
164	/* Start resource usage sampler */
165	int vrc = RTTimerLRCreate (&m.sampler, VBOX_USAGE_SAMPLER_MIN_INTERVAL,
166	&PerformanceCollector::staticSamplerCallback, this);
167	AssertMsgRC (vrc, ("Failed to create resource usage "
168	"sampling timer(%Rra)\n", vrc));
169	if (RT_FAILURE(vrc))
170	rc = E_FAIL;
171
172	if (SUCCEEDED(rc))
173	autoInitSpan.setSucceeded();
174
175	LogFlowThisFuncLeave();
176
177	return rc;
178	}
179
180	/**
181	* Uninitializes the PerformanceCollector object.
182	*
183	* Called either from FinalRelease() or by the parent when it gets destroyed.
184	*/
185	void PerformanceCollector::uninit()
186	{
187	LogFlowThisFuncEnter();
188
189	/* Enclose the state transition Ready->InUninit->NotReady */
190	AutoUninitSpan autoUninitSpan(this);
191	if (autoUninitSpan.uninitDone())
192	{
193	LogFlowThisFunc(("Already uninitialized.\n"));
194	LogFlowThisFuncLeave();
195	return;
196	}
197
198	mMagic = 0;
199
200	/* Destroy resource usage sampler */
201	int vrc = RTTimerLRDestroy (m.sampler);
202	AssertMsgRC (vrc, ("Failed to destroy resource usage "
203	"sampling timer (%Rra)\n", vrc));
204	m.sampler = NULL;
205
206	//delete m.factory;
207	//m.factory = NULL;
208
209	delete m.hal;
210	m.hal = NULL;
211
212	LogFlowThisFuncLeave();
213	}
214
215	// IPerformanceCollector properties
216	////////////////////////////////////////////////////////////////////////////////
217
218	STDMETHODIMP PerformanceCollector::COMGETTER(MetricNames)(ComSafeArrayOut(BSTR, theMetricNames))
219	{
220	if (ComSafeArrayOutIsNull(theMetricNames))
221	return E_POINTER;
222
223	AutoCaller autoCaller(this);
224	if (FAILED(autoCaller.rc())) return autoCaller.rc();
225
226	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
227
228	com::SafeArray<BSTR> metricNames(RT_ELEMENTS(g_papcszMetricNames));
229	for (size_t i = 0; i < RT_ELEMENTS(g_papcszMetricNames); i++)
230	{
231	Bstr tmp(g_papcszMetricNames[i]); /* gcc-3.3 cruft */
232	tmp.cloneTo(&metricNames[i]);
233	}
234	//gMetricNames.detachTo(ComSafeArrayOutArg(theMetricNames));
235	metricNames.detachTo(ComSafeArrayOutArg(theMetricNames));
236
237	return S_OK;
238	}
239
240	// IPerformanceCollector methods
241	////////////////////////////////////////////////////////////////////////////////
242
243	HRESULT PerformanceCollector::toIPerformanceMetric(pm::Metric src, IPerformanceMetric *dst)
244	{
245	ComObjPtr<PerformanceMetric> metric;
246	HRESULT rc = metric.createObject();
247	if (SUCCEEDED(rc))
248	rc = metric->init (src);
249	AssertComRCReturnRC(rc);
250	metric.queryInterfaceTo(dst);
251	return rc;
252	}
253
254	HRESULT PerformanceCollector::toIPerformanceMetric(pm::BaseMetric src, IPerformanceMetric *dst)
255	{
256	ComObjPtr<PerformanceMetric> metric;
257	HRESULT rc = metric.createObject();
258	if (SUCCEEDED(rc))
259	rc = metric->init (src);
260	AssertComRCReturnRC(rc);
261	metric.queryInterfaceTo(dst);
262	return rc;
263	}
264
265	STDMETHODIMP PerformanceCollector::GetMetrics(ComSafeArrayIn(IN_BSTR, metricNames),
266	ComSafeArrayIn(IUnknown *, objects),
267	ComSafeArrayOut(IPerformanceMetric *, outMetrics))
268	{
269	LogFlowThisFuncEnter();
270	//LogFlowThisFunc(("mState=%d, mType=%d\n", mState, mType));
271
272	HRESULT rc = S_OK;
273
274	AutoCaller autoCaller(this);
275	if (FAILED(autoCaller.rc())) return autoCaller.rc();
276
277	pm::Filter filter (ComSafeArrayInArg (metricNames),
278	ComSafeArrayInArg (objects));
279
280	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
281
282	MetricList filteredMetrics;
283	MetricList::iterator it;
284	for (it = m.metrics.begin(); it != m.metrics.end(); ++it)
285	if (filter.match ((it)->getObject(), (it)->getName()))
286	filteredMetrics.push_back (*it);
287
288	com::SafeIfaceArray<IPerformanceMetric> retMetrics (filteredMetrics.size());
289	int i = 0;
290	for (it = filteredMetrics.begin(); it != filteredMetrics.end(); ++it)
291	{
292	ComObjPtr<PerformanceMetric> metric;
293	rc = metric.createObject();
294	if (SUCCEEDED(rc))
295	rc = metric->init (*it);
296	AssertComRCReturnRC(rc);
297	LogFlow (("PerformanceCollector::GetMetrics() store a metric at "
298	"retMetrics[%d]...\n", i));
299	metric.queryInterfaceTo(&retMetrics[i++]);
300	}
301	retMetrics.detachTo(ComSafeArrayOutArg(outMetrics));
302	LogFlowThisFuncLeave();
303	return rc;
304	}
305
306	STDMETHODIMP PerformanceCollector::SetupMetrics(ComSafeArrayIn(IN_BSTR, metricNames),
307	ComSafeArrayIn(IUnknown *, objects),
308	ULONG aPeriod,
309	ULONG aCount,
310	ComSafeArrayOut(IPerformanceMetric *, outMetrics))
311	{
312	AutoCaller autoCaller(this);
313	if (FAILED(autoCaller.rc())) return autoCaller.rc();
314
315	pm::Filter filter(ComSafeArrayInArg (metricNames),
316	ComSafeArrayInArg (objects));
317
318	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
319
320	HRESULT rc = S_OK;
321	BaseMetricList filteredMetrics;
322	BaseMetricList::iterator it;
323	for (it = m.baseMetrics.begin(); it != m.baseMetrics.end(); ++it)
324	if (filter.match((it)->getObject(), (it)->getName()))
325	{
326	LogFlow (("PerformanceCollector::SetupMetrics() setting period to %u,"
327	" count to %u for %s\n", aPeriod, aCount, (*it)->getName()));
328	(*it)->init(aPeriod, aCount);
329	if (aPeriod == 0 \|\| aCount == 0)
330	{
331	LogFlow (("PerformanceCollector::SetupMetrics() disabling %s\n",
332	(*it)->getName()));
333	(*it)->disable();
334	}
335	else
336	{
337	LogFlow (("PerformanceCollector::SetupMetrics() enabling %s\n",
338	(*it)->getName()));
339	(*it)->enable();
340	}
341	filteredMetrics.push_back(*it);
342	}
343
344	com::SafeIfaceArray<IPerformanceMetric> retMetrics(filteredMetrics.size());
345	int i = 0;
346	for (it = filteredMetrics.begin();
347	it != filteredMetrics.end() && SUCCEEDED(rc); ++it)
348	rc = toIPerformanceMetric(*it, &retMetrics[i++]);
349	retMetrics.detachTo(ComSafeArrayOutArg(outMetrics));
350
351	LogFlowThisFuncLeave();
352	return rc;
353	}
354
355	STDMETHODIMP PerformanceCollector::EnableMetrics(ComSafeArrayIn(IN_BSTR, metricNames),
356	ComSafeArrayIn(IUnknown *, objects),
357	ComSafeArrayOut(IPerformanceMetric *, outMetrics))
358	{
359	AutoCaller autoCaller(this);
360	if (FAILED(autoCaller.rc())) return autoCaller.rc();
361
362	pm::Filter filter(ComSafeArrayInArg(metricNames),
363	ComSafeArrayInArg(objects));
364
365	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS); /* Write lock is not needed atm since we are */
366	/* fiddling with enable bit only, but we */
367	/* care for those who come next :-). */
368
369	HRESULT rc = S_OK;
370	BaseMetricList filteredMetrics;
371	BaseMetricList::iterator it;
372	for (it = m.baseMetrics.begin(); it != m.baseMetrics.end(); ++it)
373	if (filter.match((it)->getObject(), (it)->getName()))
374	{
375	(*it)->enable();
376	filteredMetrics.push_back(*it);
377	}
378
379	com::SafeIfaceArray<IPerformanceMetric> retMetrics(filteredMetrics.size());
380	int i = 0;
381	for (it = filteredMetrics.begin();
382	it != filteredMetrics.end() && SUCCEEDED(rc); ++it)
383	rc = toIPerformanceMetric(*it, &retMetrics[i++]);
384	retMetrics.detachTo(ComSafeArrayOutArg(outMetrics));
385
386	LogFlowThisFuncLeave();
387	return rc;
388	}
389
390	STDMETHODIMP PerformanceCollector::DisableMetrics(ComSafeArrayIn(IN_BSTR, metricNames),
391	ComSafeArrayIn(IUnknown *, objects),
392	ComSafeArrayOut(IPerformanceMetric *, outMetrics))
393	{
394	AutoCaller autoCaller(this);
395	if (FAILED(autoCaller.rc())) return autoCaller.rc();
396
397	pm::Filter filter(ComSafeArrayInArg(metricNames),
398	ComSafeArrayInArg(objects));
399
400	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS); /* Write lock is not needed atm since we are */
401	/* fiddling with enable bit only, but we */
402	/* care for those who come next :-). */
403
404	HRESULT rc = S_OK;
405	BaseMetricList filteredMetrics;
406	BaseMetricList::iterator it;
407	for (it = m.baseMetrics.begin(); it != m.baseMetrics.end(); ++it)
408	if (filter.match((it)->getObject(), (it)->getName()))
409	{
410	(*it)->disable();
411	filteredMetrics.push_back(*it);
412	}
413
414	com::SafeIfaceArray<IPerformanceMetric> retMetrics(filteredMetrics.size());
415	int i = 0;
416	for (it = filteredMetrics.begin();
417	it != filteredMetrics.end() && SUCCEEDED(rc); ++it)
418	rc = toIPerformanceMetric(*it, &retMetrics[i++]);
419	retMetrics.detachTo(ComSafeArrayOutArg(outMetrics));
420
421	LogFlowThisFuncLeave();
422	return rc;
423	}
424
425	STDMETHODIMP PerformanceCollector::QueryMetricsData(ComSafeArrayIn (IN_BSTR, metricNames),
426	ComSafeArrayIn (IUnknown *, objects),
427	ComSafeArrayOut(BSTR, outMetricNames),
428	ComSafeArrayOut(IUnknown *, outObjects),
429	ComSafeArrayOut(BSTR, outUnits),
430	ComSafeArrayOut(ULONG, outScales),
431	ComSafeArrayOut(ULONG, outSequenceNumbers),
432	ComSafeArrayOut(ULONG, outDataIndices),
433	ComSafeArrayOut(ULONG, outDataLengths),
434	ComSafeArrayOut(LONG, outData))
435	{
436	AutoCaller autoCaller(this);
437	if (FAILED(autoCaller.rc())) return autoCaller.rc();
438
439	pm::Filter filter(ComSafeArrayInArg(metricNames),
440	ComSafeArrayInArg(objects));
441
442	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
443
444	/* Let's compute the size of the resulting flat array */
445	size_t flatSize = 0;
446	MetricList filteredMetrics;
447	MetricList::iterator it;
448	for (it = m.metrics.begin(); it != m.metrics.end(); ++it)
449	if (filter.match ((it)->getObject(), (it)->getName()))
450	{
451	filteredMetrics.push_back (*it);
452	flatSize += (*it)->getLength();
453	}
454
455	int i = 0;
456	size_t flatIndex = 0;
457	size_t numberOfMetrics = filteredMetrics.size();
458	com::SafeArray<BSTR> retNames(numberOfMetrics);
459	com::SafeIfaceArray<IUnknown> retObjects(numberOfMetrics);
460	com::SafeArray<BSTR> retUnits(numberOfMetrics);
461	com::SafeArray<ULONG> retScales(numberOfMetrics);
462	com::SafeArray<ULONG> retSequenceNumbers(numberOfMetrics);
463	com::SafeArray<ULONG> retIndices(numberOfMetrics);
464	com::SafeArray<ULONG> retLengths(numberOfMetrics);
465	com::SafeArray<LONG> retData(flatSize);
466
467	for (it = filteredMetrics.begin(); it != filteredMetrics.end(); ++it, ++i)
468	{
469	ULONG *values, length, sequenceNumber;
470	/* @todo We may want to revise the query method to get rid of excessive alloc/memcpy calls. */
471	(*it)->query(&values, &length, &sequenceNumber);
472	LogFlow (("PerformanceCollector::QueryMetricsData() querying metric %s "
473	"returned %d values.\n", (*it)->getName(), length));
474	memcpy(retData.raw() + flatIndex, values, length * sizeof(*values));
475	Bstr tmp((*it)->getName());
476	tmp.detachTo(&retNames[i]);
477	(*it)->getObject().queryInterfaceTo(&retObjects[i]);
478	tmp = (*it)->getUnit();
479	tmp.detachTo(&retUnits[i]);
480	retScales[i] = (*it)->getScale();
481	retSequenceNumbers[i] = sequenceNumber;
482	retLengths[i] = length;
483	retIndices[i] = (ULONG)flatIndex;
484	flatIndex += length;
485	}
486
487	retNames.detachTo(ComSafeArrayOutArg(outMetricNames));
488	retObjects.detachTo(ComSafeArrayOutArg(outObjects));
489	retUnits.detachTo(ComSafeArrayOutArg(outUnits));
490	retScales.detachTo(ComSafeArrayOutArg(outScales));
491	retSequenceNumbers.detachTo(ComSafeArrayOutArg(outSequenceNumbers));
492	retIndices.detachTo(ComSafeArrayOutArg(outDataIndices));
493	retLengths.detachTo(ComSafeArrayOutArg(outDataLengths));
494	retData.detachTo(ComSafeArrayOutArg(outData));
495	return S_OK;
496	}
497
498	// public methods for internal purposes
499	///////////////////////////////////////////////////////////////////////////////
500
501	void PerformanceCollector::registerBaseMetric(pm::BaseMetric *baseMetric)
502	{
503	//LogFlowThisFuncEnter();
504	AutoCaller autoCaller(this);
505	if (!SUCCEEDED(autoCaller.rc())) return;
506
507	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
508	LogAleksey(("{%p} " LOG_FN_FMT ": obj=%p name=%s\n", this, __PRETTY_FUNCTION__, (void *)baseMetric->getObject(), baseMetric->getName()));
509	m.baseMetrics.push_back (baseMetric);
510	//LogFlowThisFuncLeave();
511	}
512
513	void PerformanceCollector::registerMetric(pm::Metric *metric)
514	{
515	//LogFlowThisFuncEnter();
516	AutoCaller autoCaller(this);
517	if (!SUCCEEDED(autoCaller.rc())) return;
518
519	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
520	LogAleksey(("{%p} " LOG_FN_FMT ": obj=%p name=%s\n", this, __PRETTY_FUNCTION__, (void *)metric->getObject(), metric->getName()));
521	m.metrics.push_back (metric);
522	//LogFlowThisFuncLeave();
523	}
524
525	void PerformanceCollector::unregisterBaseMetricsFor(const ComPtr<IUnknown> &aObject)
526	{
527	//LogFlowThisFuncEnter();
528	AutoCaller autoCaller(this);
529	if (!SUCCEEDED(autoCaller.rc())) return;
530
531	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
532	LogAleksey(("{%p} " LOG_FN_FMT ": before remove_if: m.baseMetrics.size()=%d\n", this, __PRETTY_FUNCTION__, m.baseMetrics.size()));
533	BaseMetricList::iterator it;
534	for (it = m.baseMetrics.begin(); it != m.baseMetrics.end();)
535	if ((*it)->associatedWith(aObject))
536	{
537	delete *it;
538	it = m.baseMetrics.erase(it);
539	}
540	else
541	++it;
542	LogAleksey(("{%p} " LOG_FN_FMT ": after remove_if: m.baseMetrics.size()=%d\n", this, __PRETTY_FUNCTION__, m.baseMetrics.size()));
543	//LogFlowThisFuncLeave();
544	}
545
546	void PerformanceCollector::unregisterMetricsFor(const ComPtr<IUnknown> &aObject)
547	{
548	//LogFlowThisFuncEnter();
549	AutoCaller autoCaller(this);
550	if (!SUCCEEDED(autoCaller.rc())) return;
551
552	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
553	LogAleksey(("{%p} " LOG_FN_FMT ": obj=%p\n", this, __PRETTY_FUNCTION__, (void *)aObject));
554	MetricList::iterator it;
555	for (it = m.metrics.begin(); it != m.metrics.end();)
556	if ((*it)->associatedWith(aObject))
557	{
558	delete *it;
559	it = m.metrics.erase(it);
560	}
561	else
562	++it;
563	//LogFlowThisFuncLeave();
564	}
565
566	void PerformanceCollector::suspendSampling()
567	{
568	AutoCaller autoCaller(this);
569	if (!SUCCEEDED(autoCaller.rc())) return;
570
571	int rc = RTTimerLRStop(m.sampler);
572	AssertRC(rc);
573	}
574
575	void PerformanceCollector::resumeSampling()
576	{
577	AutoCaller autoCaller(this);
578	if (!SUCCEEDED(autoCaller.rc())) return;
579
580	int rc = RTTimerLRStart(m.sampler, 0);
581	AssertRC(rc);
582	}
583
584
585	// private methods
586	///////////////////////////////////////////////////////////////////////////////
587
588	/* static */
589	void PerformanceCollector::staticSamplerCallback(RTTIMERLR hTimerLR, void *pvUser,
590	uint64_t iTick)
591	{
592	AssertReturnVoid (pvUser != NULL);
593	PerformanceCollector collector = static_cast <PerformanceCollector > (pvUser);
594	Assert(collector->mMagic == MAGIC);
595	if (collector->mMagic == MAGIC)
596	collector->samplerCallback(iTick);
597
598	NOREF (hTimerLR);
599	}
600
601	void PerformanceCollector::samplerCallback(uint64_t iTick)
602	{
603	Log4(("{%p} " LOG_FN_FMT ": ENTER\n", this, __PRETTY_FUNCTION__));
604	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
605
606	pm::CollectorHints hints;
607	uint64_t timestamp = RTTimeMilliTS();
608	BaseMetricList toBeCollected;
609	BaseMetricList::iterator it;
610	/* Compose the list of metrics being collected at this moment */
611	for (it = m.baseMetrics.begin(); it != m.baseMetrics.end(); it++)
612	if ((*it)->collectorBeat(timestamp))
613	{
614	(*it)->preCollect(hints, iTick);
615	toBeCollected.push_back(*it);
616	}
617
618	if (toBeCollected.size() == 0)
619	return;
620
621	/* Let know the platform specific code what is being collected */
622	m.hal->preCollect(hints, iTick);
623
624	/* Finally, collect the data */
625	std::for_each (toBeCollected.begin(), toBeCollected.end(),
626	std::mem_fun (&pm::BaseMetric::collect));
627	Log4(("{%p} " LOG_FN_FMT ": LEAVE\n", this, __PRETTY_FUNCTION__));
628	}
629
630	////////////////////////////////////////////////////////////////////////////////
631	// PerformanceMetric class
632	////////////////////////////////////////////////////////////////////////////////
633
634	// constructor / destructor
635	////////////////////////////////////////////////////////////////////////////////
636
637	PerformanceMetric::PerformanceMetric()
638	{
639	}
640
641	PerformanceMetric::~PerformanceMetric()
642	{
643	}
644
645	HRESULT PerformanceMetric::FinalConstruct()
646	{
647	LogFlowThisFunc(("\n"));
648
649	return S_OK;
650	}
651
652	void PerformanceMetric::FinalRelease()
653	{
654	LogFlowThisFunc(("\n"));
655
656	uninit ();
657	}
658
659	// public initializer/uninitializer for internal purposes only
660	////////////////////////////////////////////////////////////////////////////////
661
662	HRESULT PerformanceMetric::init(pm::Metric *aMetric)
663	{
664	m.name = aMetric->getName();
665	m.object = aMetric->getObject();
666	m.description = aMetric->getDescription();
667	m.period = aMetric->getPeriod();
668	m.count = aMetric->getLength();
669	m.unit = aMetric->getUnit();
670	m.min = aMetric->getMinValue();
671	m.max = aMetric->getMaxValue();
672	return S_OK;
673	}
674
675	HRESULT PerformanceMetric::init(pm::BaseMetric *aMetric)
676	{
677	m.name = aMetric->getName();
678	m.object = aMetric->getObject();
679	m.description = "";
680	m.period = aMetric->getPeriod();
681	m.count = aMetric->getLength();
682	m.unit = aMetric->getUnit();
683	m.min = aMetric->getMinValue();
684	m.max = aMetric->getMaxValue();
685	return S_OK;
686	}
687
688	void PerformanceMetric::uninit()
689	{
690	}
691
692	STDMETHODIMP PerformanceMetric::COMGETTER(MetricName)(BSTR *aMetricName)
693	{
694	/// @todo (r=dmik) why do all these getters not do AutoCaller and
695	/// AutoReadLock? Is the underlying metric a constant object?
696
697	m.name.cloneTo(aMetricName);
698	return S_OK;
699	}
700
701	STDMETHODIMP PerformanceMetric::COMGETTER(Object)(IUnknown **anObject)
702	{
703	m.object.queryInterfaceTo(anObject);
704	return S_OK;
705	}
706
707	STDMETHODIMP PerformanceMetric::COMGETTER(Description)(BSTR *aDescription)
708	{
709	m.description.cloneTo(aDescription);
710	return S_OK;
711	}
712
713	STDMETHODIMP PerformanceMetric::COMGETTER(Period)(ULONG *aPeriod)
714	{
715	*aPeriod = m.period;
716	return S_OK;
717	}
718
719	STDMETHODIMP PerformanceMetric::COMGETTER(Count)(ULONG *aCount)
720	{
721	*aCount = m.count;
722	return S_OK;
723	}
724
725	STDMETHODIMP PerformanceMetric::COMGETTER(Unit)(BSTR *aUnit)
726	{
727	m.unit.cloneTo(aUnit);
728	return S_OK;
729	}
730
731	STDMETHODIMP PerformanceMetric::COMGETTER(MinimumValue)(LONG *aMinValue)
732	{
733	*aMinValue = m.min;
734	return S_OK;
735	}
736
737	STDMETHODIMP PerformanceMetric::COMGETTER(MaximumValue)(LONG *aMaxValue)
738	{
739	*aMaxValue = m.max;
740	return S_OK;
741	}
742	/* vi: set tabstop=4 shiftwidth=4 expandtab: */

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source: vbox/trunk/src/VBox/Main/PerformanceImpl.cpp@ 30832

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