PerformanceImpl.cpp@ 25860

Last change on this file since 25860 was 25860, checked in by vboxsync, 15 years ago
Main: cleanup: get rid of VirtualBoxBaseProto, move AutoCaller/Span* classes out of VirtualBoxBaseProto class scope and into separate header; move CombinedProgress into separate header (it's only used by Console any more)
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 22.0 KB

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1	/* $Id: PerformanceImpl.cpp 25860 2010-01-15 13:27:26Z vboxsync $ */
2
3	/** @file
4	*
5	* VBox Performance API COM Classes implementation
6	*/
7
8	/*
9	* Copyright (C) 2008 Sun Microsystems, Inc.
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	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
20	* Clara, CA 95054 USA or visit http://www.sun.com if you need
21	* additional information or have any questions.
22	*/
23
24	#include "PerformanceImpl.h"
25
26	#include "AutoCaller.h"
27	#include "Logging.h"
28
29	#include <iprt/process.h>
30
31	#include <VBox/err.h>
32	#include <VBox/settings.h>
33
34	#include <vector>
35	#include <algorithm>
36	#include <functional>
37
38	#include "Performance.h"
39
40	static Bstr gMetricNames[] =
41	{
42	"CPU/Load/User",
43	"CPU/Load/User:avg",
44	"CPU/Load/User:min",
45	"CPU/Load/User:max",
46	"CPU/Load/Kernel",
47	"CPU/Load/Kernel:avg",
48	"CPU/Load/Kernel:min",
49	"CPU/Load/Kernel:max",
50	"CPU/Load/Idle",
51	"CPU/Load/Idle:avg",
52	"CPU/Load/Idle:min",
53	"CPU/Load/Idle:max",
54	"CPU/MHz",
55	"CPU/MHz:avg",
56	"CPU/MHz:min",
57	"CPU/MHz:max",
58	"RAM/Usage/Total",
59	"RAM/Usage/Total:avg",
60	"RAM/Usage/Total:min",
61	"RAM/Usage/Total:max",
62	"RAM/Usage/Used",
63	"RAM/Usage/Used:avg",
64	"RAM/Usage/Used:min",
65	"RAM/Usage/Used:max",
66	"RAM/Usage/Free",
67	"RAM/Usage/Free:avg",
68	"RAM/Usage/Free:min",
69	"RAM/Usage/Free:max",
70	};
71
72	////////////////////////////////////////////////////////////////////////////////
73	// PerformanceCollector class
74	////////////////////////////////////////////////////////////////////////////////
75
76	// constructor / destructor
77	////////////////////////////////////////////////////////////////////////////////
78
79	PerformanceCollector::PerformanceCollector() : mMagic(0) {}
80
81	PerformanceCollector::~PerformanceCollector() {}
82
83	HRESULT PerformanceCollector::FinalConstruct()
84	{
85	LogFlowThisFunc(("\n"));
86
87	return S_OK;
88	}
89
90	void PerformanceCollector::FinalRelease()
91	{
92	LogFlowThisFunc(("\n"));
93	}
94
95	// public initializer/uninitializer for internal purposes only
96	////////////////////////////////////////////////////////////////////////////////
97
98	/**
99	* Initializes the PerformanceCollector object.
100	*/
101	HRESULT PerformanceCollector::init()
102	{
103	/* Enclose the state transition NotReady->InInit->Ready */
104	AutoInitSpan autoInitSpan(this);
105	AssertReturn(autoInitSpan.isOk(), E_FAIL);
106
107	LogFlowThisFuncEnter();
108
109	HRESULT rc = S_OK;
110
111	m.hal = pm::createHAL();
112
113	/* Let the sampler know it gets a valid collector. */
114	mMagic = MAGIC;
115
116	/* Start resource usage sampler */
117	int vrc = RTTimerLRCreate (&m.sampler, VBOX_USAGE_SAMPLER_MIN_INTERVAL,
118	&PerformanceCollector::staticSamplerCallback, this);
119	AssertMsgRC (vrc, ("Failed to create resource usage "
120	"sampling timer(%Rra)\n", vrc));
121	if (RT_FAILURE(vrc))
122	rc = E_FAIL;
123
124	if (SUCCEEDED(rc))
125	autoInitSpan.setSucceeded();
126
127	LogFlowThisFuncLeave();
128
129	return rc;
130	}
131
132	/**
133	* Uninitializes the PerformanceCollector object.
134	*
135	* Called either from FinalRelease() or by the parent when it gets destroyed.
136	*/
137	void PerformanceCollector::uninit()
138	{
139	LogFlowThisFuncEnter();
140
141	/* Enclose the state transition Ready->InUninit->NotReady */
142	AutoUninitSpan autoUninitSpan(this);
143	if (autoUninitSpan.uninitDone())
144	{
145	LogFlowThisFunc(("Already uninitialized.\n"));
146	LogFlowThisFuncLeave();
147	return;
148	}
149
150	mMagic = 0;
151
152	/* Destroy resource usage sampler */
153	int vrc = RTTimerLRDestroy (m.sampler);
154	AssertMsgRC (vrc, ("Failed to destroy resource usage "
155	"sampling timer (%Rra)\n", vrc));
156	m.sampler = NULL;
157
158	//delete m.factory;
159	//m.factory = NULL;
160
161	delete m.hal;
162	m.hal = NULL;
163
164	LogFlowThisFuncLeave();
165	}
166
167	// IPerformanceCollector properties
168	////////////////////////////////////////////////////////////////////////////////
169
170	STDMETHODIMP
171	PerformanceCollector::COMGETTER(MetricNames) (ComSafeArrayOut(BSTR, theMetricNames))
172	{
173	if (ComSafeArrayOutIsNull(theMetricNames))
174	return E_POINTER;
175
176	AutoCaller autoCaller(this);
177	if (FAILED(autoCaller.rc())) return autoCaller.rc();
178
179	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
180
181	com::SafeArray<BSTR> metricNames(RT_ELEMENTS(gMetricNames));
182	for (size_t i = 0; i < RT_ELEMENTS(gMetricNames); i++)
183	{
184	Bstr tmp(gMetricNames[i]); /* gcc-3.3 cruft */
185	tmp.cloneTo(&metricNames[i]);
186	}
187	//gMetricNames.detachTo(ComSafeArrayOutArg(theMetricNames));
188	metricNames.detachTo(ComSafeArrayOutArg(theMetricNames));
189
190	return S_OK;
191	}
192
193	// IPerformanceCollector methods
194	////////////////////////////////////////////////////////////////////////////////
195
196	HRESULT PerformanceCollector::toIPerformanceMetric(pm::Metric src, IPerformanceMetric *dst)
197	{
198	ComObjPtr<PerformanceMetric> metric;
199	HRESULT rc = metric.createObject();
200	if (SUCCEEDED(rc))
201	rc = metric->init (src);
202	AssertComRCReturnRC(rc);
203	metric.queryInterfaceTo(dst);
204	return rc;
205	}
206
207	HRESULT PerformanceCollector::toIPerformanceMetric(pm::BaseMetric src, IPerformanceMetric *dst)
208	{
209	ComObjPtr<PerformanceMetric> metric;
210	HRESULT rc = metric.createObject();
211	if (SUCCEEDED(rc))
212	rc = metric->init (src);
213	AssertComRCReturnRC(rc);
214	metric.queryInterfaceTo(dst);
215	return rc;
216	}
217
218	STDMETHODIMP
219	PerformanceCollector::GetMetrics (ComSafeArrayIn (IN_BSTR, metricNames),
220	ComSafeArrayIn (IUnknown *, objects),
221	ComSafeArrayOut(IPerformanceMetric *, outMetrics))
222	{
223	LogFlowThisFuncEnter();
224	//LogFlowThisFunc(("mState=%d, mType=%d\n", mState, mType));
225
226	HRESULT rc = S_OK;
227
228	AutoCaller autoCaller(this);
229	if (FAILED(autoCaller.rc())) return autoCaller.rc();
230
231	pm::Filter filter (ComSafeArrayInArg (metricNames),
232	ComSafeArrayInArg (objects));
233
234	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
235
236	MetricList filteredMetrics;
237	MetricList::iterator it;
238	for (it = m.metrics.begin(); it != m.metrics.end(); ++it)
239	if (filter.match ((it)->getObject(), (it)->getName()))
240	filteredMetrics.push_back (*it);
241
242	com::SafeIfaceArray<IPerformanceMetric> retMetrics (filteredMetrics.size());
243	int i = 0;
244	for (it = filteredMetrics.begin(); it != filteredMetrics.end(); ++it)
245	{
246	ComObjPtr<PerformanceMetric> metric;
247	rc = metric.createObject();
248	if (SUCCEEDED(rc))
249	rc = metric->init (*it);
250	AssertComRCReturnRC(rc);
251	LogFlow (("PerformanceCollector::GetMetrics() store a metric at "
252	"retMetrics[%d]...\n", i));
253	metric.queryInterfaceTo(&retMetrics [i++]);
254	}
255	retMetrics.detachTo(ComSafeArrayOutArg(outMetrics));
256	LogFlowThisFuncLeave();
257	return rc;
258	}
259
260	STDMETHODIMP
261	PerformanceCollector::SetupMetrics (ComSafeArrayIn (IN_BSTR, metricNames),
262	ComSafeArrayIn (IUnknown *, objects),
263	ULONG aPeriod, ULONG aCount,
264	ComSafeArrayOut(IPerformanceMetric *,
265	outMetrics))
266	{
267	AutoCaller autoCaller(this);
268	if (FAILED(autoCaller.rc())) return autoCaller.rc();
269
270	pm::Filter filter (ComSafeArrayInArg (metricNames),
271	ComSafeArrayInArg (objects));
272
273	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
274
275	HRESULT rc = S_OK;
276	BaseMetricList filteredMetrics;
277	BaseMetricList::iterator it;
278	for (it = m.baseMetrics.begin(); it != m.baseMetrics.end(); ++it)
279	if (filter.match((it)->getObject(), (it)->getName()))
280	{
281	LogFlow (("PerformanceCollector::SetupMetrics() setting period to %u,"
282	" count to %u for %s\n", aPeriod, aCount, (*it)->getName()));
283	(*it)->init(aPeriod, aCount);
284	if (aPeriod == 0 \|\| aCount == 0)
285	{
286	LogFlow (("PerformanceCollector::SetupMetrics() disabling %s\n",
287	(*it)->getName()));
288	(*it)->disable();
289	}
290	else
291	{
292	LogFlow (("PerformanceCollector::SetupMetrics() enabling %s\n",
293	(*it)->getName()));
294	(*it)->enable();
295	}
296	filteredMetrics.push_back(*it);
297	}
298
299	com::SafeIfaceArray<IPerformanceMetric> retMetrics (filteredMetrics.size());
300	int i = 0;
301	for (it = filteredMetrics.begin();
302	it != filteredMetrics.end() && SUCCEEDED(rc); ++it)
303	rc = toIPerformanceMetric(*it, &retMetrics [i++]);
304	retMetrics.detachTo(ComSafeArrayOutArg(outMetrics));
305
306	LogFlowThisFuncLeave();
307	return rc;
308	}
309
310	STDMETHODIMP
311	PerformanceCollector::EnableMetrics (ComSafeArrayIn (IN_BSTR, metricNames),
312	ComSafeArrayIn (IUnknown *, objects),
313	ComSafeArrayOut(IPerformanceMetric *,
314	outMetrics))
315	{
316	AutoCaller autoCaller(this);
317	if (FAILED(autoCaller.rc())) return autoCaller.rc();
318
319	pm::Filter filter (ComSafeArrayInArg (metricNames),
320	ComSafeArrayInArg (objects));
321
322	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS); /* Write lock is not needed atm since we are */
323	/* fiddling with enable bit only, but we */
324	/* care for those who come next :-). */
325
326	HRESULT rc = S_OK;
327	BaseMetricList filteredMetrics;
328	BaseMetricList::iterator it;
329	for (it = m.baseMetrics.begin(); it != m.baseMetrics.end(); ++it)
330	if (filter.match((it)->getObject(), (it)->getName()))
331	{
332	(*it)->enable();
333	filteredMetrics.push_back(*it);
334	}
335
336	com::SafeIfaceArray<IPerformanceMetric> retMetrics (filteredMetrics.size());
337	int i = 0;
338	for (it = filteredMetrics.begin();
339	it != filteredMetrics.end() && SUCCEEDED(rc); ++it)
340	rc = toIPerformanceMetric(*it, &retMetrics [i++]);
341	retMetrics.detachTo(ComSafeArrayOutArg(outMetrics));
342
343	LogFlowThisFuncLeave();
344	return rc;
345	}
346
347	STDMETHODIMP
348	PerformanceCollector::DisableMetrics (ComSafeArrayIn (IN_BSTR, metricNames),
349	ComSafeArrayIn (IUnknown *, objects),
350	ComSafeArrayOut(IPerformanceMetric *,
351	outMetrics))
352	{
353	AutoCaller autoCaller(this);
354	if (FAILED(autoCaller.rc())) return autoCaller.rc();
355
356	pm::Filter filter (ComSafeArrayInArg (metricNames),
357	ComSafeArrayInArg (objects));
358
359	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS); /* Write lock is not needed atm since we are */
360	/* fiddling with enable bit only, but we */
361	/* care for those who come next :-). */
362
363	HRESULT rc = S_OK;
364	BaseMetricList filteredMetrics;
365	BaseMetricList::iterator it;
366	for (it = m.baseMetrics.begin(); it != m.baseMetrics.end(); ++it)
367	if (filter.match((it)->getObject(), (it)->getName()))
368	{
369	(*it)->disable();
370	filteredMetrics.push_back(*it);
371	}
372
373	com::SafeIfaceArray<IPerformanceMetric> retMetrics (filteredMetrics.size());
374	int i = 0;
375	for (it = filteredMetrics.begin();
376	it != filteredMetrics.end() && SUCCEEDED(rc); ++it)
377	rc = toIPerformanceMetric(*it, &retMetrics [i++]);
378	retMetrics.detachTo(ComSafeArrayOutArg(outMetrics));
379
380	LogFlowThisFuncLeave();
381	return rc;
382	}
383
384	STDMETHODIMP
385	PerformanceCollector::QueryMetricsData (ComSafeArrayIn (IN_BSTR, metricNames),
386	ComSafeArrayIn (IUnknown *, objects),
387	ComSafeArrayOut(BSTR, outMetricNames),
388	ComSafeArrayOut(IUnknown *, outObjects),
389	ComSafeArrayOut(BSTR, outUnits),
390	ComSafeArrayOut(ULONG, outScales),
391	ComSafeArrayOut(ULONG, outSequenceNumbers),
392	ComSafeArrayOut(ULONG, outDataIndices),
393	ComSafeArrayOut(ULONG, outDataLengths),
394	ComSafeArrayOut(LONG, outData))
395	{
396	AutoCaller autoCaller(this);
397	if (FAILED(autoCaller.rc())) return autoCaller.rc();
398
399	pm::Filter filter (ComSafeArrayInArg (metricNames),
400	ComSafeArrayInArg (objects));
401
402	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
403
404	/* Let's compute the size of the resulting flat array */
405	size_t flatSize = 0;
406	MetricList filteredMetrics;
407	MetricList::iterator it;
408	for (it = m.metrics.begin(); it != m.metrics.end(); ++it)
409	if (filter.match ((it)->getObject(), (it)->getName()))
410	{
411	filteredMetrics.push_back (*it);
412	flatSize += (*it)->getLength();
413	}
414
415	int i = 0;
416	size_t flatIndex = 0;
417	size_t numberOfMetrics = filteredMetrics.size();
418	com::SafeArray<BSTR> retNames (numberOfMetrics);
419	com::SafeIfaceArray<IUnknown> retObjects (numberOfMetrics);
420	com::SafeArray<BSTR> retUnits (numberOfMetrics);
421	com::SafeArray<ULONG> retScales (numberOfMetrics);
422	com::SafeArray<ULONG> retSequenceNumbers (numberOfMetrics);
423	com::SafeArray<ULONG> retIndices (numberOfMetrics);
424	com::SafeArray<ULONG> retLengths (numberOfMetrics);
425	com::SafeArray<LONG> retData (flatSize);
426
427	for (it = filteredMetrics.begin(); it != filteredMetrics.end(); ++it, ++i)
428	{
429	ULONG *values, length, sequenceNumber;
430	/* @todo We may want to revise the query method to get rid of excessive alloc/memcpy calls. */
431	(*it)->query(&values, &length, &sequenceNumber);
432	LogFlow (("PerformanceCollector::QueryMetricsData() querying metric %s "
433	"returned %d values.\n", (*it)->getName(), length));
434	memcpy(retData.raw() + flatIndex, values, length * sizeof(*values));
435	Bstr tmp((*it)->getName());
436	tmp.detachTo(&retNames[i]);
437	(*it)->getObject().queryInterfaceTo(&retObjects[i]);
438	tmp = (*it)->getUnit();
439	tmp.detachTo(&retUnits[i]);
440	retScales[i] = (*it)->getScale();
441	retSequenceNumbers[i] = sequenceNumber;
442	retLengths[i] = length;
443	retIndices[i] = (ULONG)flatIndex;
444	flatIndex += length;
445	}
446
447	retNames.detachTo(ComSafeArrayOutArg(outMetricNames));
448	retObjects.detachTo(ComSafeArrayOutArg(outObjects));
449	retUnits.detachTo(ComSafeArrayOutArg(outUnits));
450	retScales.detachTo(ComSafeArrayOutArg(outScales));
451	retSequenceNumbers.detachTo(ComSafeArrayOutArg(outSequenceNumbers));
452	retIndices.detachTo(ComSafeArrayOutArg(outDataIndices));
453	retLengths.detachTo(ComSafeArrayOutArg(outDataLengths));
454	retData.detachTo(ComSafeArrayOutArg(outData));
455	return S_OK;
456	}
457
458	// public methods for internal purposes
459	///////////////////////////////////////////////////////////////////////////////
460
461	void PerformanceCollector::registerBaseMetric (pm::BaseMetric *baseMetric)
462	{
463	//LogFlowThisFuncEnter();
464	AutoCaller autoCaller(this);
465	if (!SUCCEEDED(autoCaller.rc())) return;
466
467	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
468	LogAleksey(("{%p} " LOG_FN_FMT ": obj=%p name=%s\n", this, __PRETTY_FUNCTION__, (void *)baseMetric->getObject(), baseMetric->getName()));
469	m.baseMetrics.push_back (baseMetric);
470	//LogFlowThisFuncLeave();
471	}
472
473	void PerformanceCollector::registerMetric (pm::Metric *metric)
474	{
475	//LogFlowThisFuncEnter();
476	AutoCaller autoCaller(this);
477	if (!SUCCEEDED(autoCaller.rc())) return;
478
479	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
480	LogAleksey(("{%p} " LOG_FN_FMT ": obj=%p name=%s\n", this, __PRETTY_FUNCTION__, (void *)metric->getObject(), metric->getName()));
481	m.metrics.push_back (metric);
482	//LogFlowThisFuncLeave();
483	}
484
485	void PerformanceCollector::unregisterBaseMetricsFor (const ComPtr<IUnknown> &aObject)
486	{
487	//LogFlowThisFuncEnter();
488	AutoCaller autoCaller(this);
489	if (!SUCCEEDED(autoCaller.rc())) return;
490
491	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
492	LogAleksey(("{%p} " LOG_FN_FMT ": before remove_if: m.baseMetrics.size()=%d\n", this, __PRETTY_FUNCTION__, m.baseMetrics.size()));
493	BaseMetricList::iterator it;
494	for (it = m.baseMetrics.begin(); it != m.baseMetrics.end();)
495	if ((*it)->associatedWith(aObject))
496	{
497	delete *it;
498	it = m.baseMetrics.erase(it);
499	}
500	else
501	++it;
502	LogAleksey(("{%p} " LOG_FN_FMT ": after remove_if: m.baseMetrics.size()=%d\n", this, __PRETTY_FUNCTION__, m.baseMetrics.size()));
503	//LogFlowThisFuncLeave();
504	}
505
506	void PerformanceCollector::unregisterMetricsFor (const ComPtr<IUnknown> &aObject)
507	{
508	//LogFlowThisFuncEnter();
509	AutoCaller autoCaller(this);
510	if (!SUCCEEDED(autoCaller.rc())) return;
511
512	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
513	LogAleksey(("{%p} " LOG_FN_FMT ": obj=%p\n", this, __PRETTY_FUNCTION__, (void *)aObject));
514	MetricList::iterator it;
515	for (it = m.metrics.begin(); it != m.metrics.end();)
516	if ((*it)->associatedWith(aObject))
517	{
518	delete *it;
519	it = m.metrics.erase(it);
520	}
521	else
522	++it;
523	//LogFlowThisFuncLeave();
524	}
525
526	void PerformanceCollector::suspendSampling()
527	{
528	AutoCaller autoCaller(this);
529	if (!SUCCEEDED(autoCaller.rc())) return;
530
531	int rc = RTTimerLRStop(m.sampler);
532	AssertRC(rc);
533	}
534
535	void PerformanceCollector::resumeSampling()
536	{
537	AutoCaller autoCaller(this);
538	if (!SUCCEEDED(autoCaller.rc())) return;
539
540	int rc = RTTimerLRStart(m.sampler, 0);
541	AssertRC(rc);
542	}
543
544
545	// private methods
546	///////////////////////////////////////////////////////////////////////////////
547
548	/* static */
549	void PerformanceCollector::staticSamplerCallback (RTTIMERLR hTimerLR, void *pvUser,
550	uint64_t /* iTick */)
551	{
552	AssertReturnVoid (pvUser != NULL);
553	PerformanceCollector collector = static_cast <PerformanceCollector > (pvUser);
554	Assert (collector->mMagic == MAGIC);
555	if (collector->mMagic == MAGIC)
556	{
557	collector->samplerCallback();
558	}
559	NOREF (hTimerLR);
560	}
561
562	void PerformanceCollector::samplerCallback()
563	{
564	Log4(("{%p} " LOG_FN_FMT ": ENTER\n", this, __PRETTY_FUNCTION__));
565	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
566
567	pm::CollectorHints hints;
568	uint64_t timestamp = RTTimeMilliTS();
569	BaseMetricList toBeCollected;
570	BaseMetricList::iterator it;
571	/* Compose the list of metrics being collected at this moment */
572	for (it = m.baseMetrics.begin(); it != m.baseMetrics.end(); it++)
573	if ((*it)->collectorBeat(timestamp))
574	{
575	(*it)->preCollect(hints);
576	toBeCollected.push_back(*it);
577	}
578
579	if (toBeCollected.size() == 0)
580	return;
581
582	/* Let know the platform specific code what is being collected */
583	m.hal->preCollect(hints);
584
585	/* Finally, collect the data */
586	std::for_each (toBeCollected.begin(), toBeCollected.end(),
587	std::mem_fun (&pm::BaseMetric::collect));
588	Log4(("{%p} " LOG_FN_FMT ": LEAVE\n", this, __PRETTY_FUNCTION__));
589	}
590
591	////////////////////////////////////////////////////////////////////////////////
592	// PerformanceMetric class
593	////////////////////////////////////////////////////////////////////////////////
594
595	// constructor / destructor
596	////////////////////////////////////////////////////////////////////////////////
597
598	PerformanceMetric::PerformanceMetric()
599	{
600	}
601
602	PerformanceMetric::~PerformanceMetric()
603	{
604	}
605
606	HRESULT PerformanceMetric::FinalConstruct()
607	{
608	LogFlowThisFunc(("\n"));
609
610	return S_OK;
611	}
612
613	void PerformanceMetric::FinalRelease()
614	{
615	LogFlowThisFunc(("\n"));
616
617	uninit ();
618	}
619
620	// public initializer/uninitializer for internal purposes only
621	////////////////////////////////////////////////////////////////////////////////
622
623	HRESULT PerformanceMetric::init (pm::Metric *aMetric)
624	{
625	m.name = aMetric->getName();
626	m.object = aMetric->getObject();
627	m.description = aMetric->getDescription();
628	m.period = aMetric->getPeriod();
629	m.count = aMetric->getLength();
630	m.unit = aMetric->getUnit();
631	m.min = aMetric->getMinValue();
632	m.max = aMetric->getMaxValue();
633	return S_OK;
634	}
635
636	HRESULT PerformanceMetric::init (pm::BaseMetric *aMetric)
637	{
638	m.name = aMetric->getName();
639	m.object = aMetric->getObject();
640	m.description = "";
641	m.period = aMetric->getPeriod();
642	m.count = aMetric->getLength();
643	m.unit = aMetric->getUnit();
644	m.min = aMetric->getMinValue();
645	m.max = aMetric->getMaxValue();
646	return S_OK;
647	}
648
649	void PerformanceMetric::uninit()
650	{
651	}
652
653	STDMETHODIMP PerformanceMetric::COMGETTER(MetricName) (BSTR *aMetricName)
654	{
655	/// @todo (r=dmik) why do all these getters not do AutoCaller and
656	/// AutoReadLock? Is the underlying metric a constant object?
657
658	m.name.cloneTo(aMetricName);
659	return S_OK;
660	}
661
662	STDMETHODIMP PerformanceMetric::COMGETTER(Object) (IUnknown **anObject)
663	{
664	m.object.queryInterfaceTo(anObject);
665	return S_OK;
666	}
667
668	STDMETHODIMP PerformanceMetric::COMGETTER(Description) (BSTR *aDescription)
669	{
670	m.description.cloneTo(aDescription);
671	return S_OK;
672	}
673
674	STDMETHODIMP PerformanceMetric::COMGETTER(Period) (ULONG *aPeriod)
675	{
676	*aPeriod = m.period;
677	return S_OK;
678	}
679
680	STDMETHODIMP PerformanceMetric::COMGETTER(Count) (ULONG *aCount)
681	{
682	*aCount = m.count;
683	return S_OK;
684	}
685
686	STDMETHODIMP PerformanceMetric::COMGETTER(Unit) (BSTR *aUnit)
687	{
688	m.unit.cloneTo(aUnit);
689	return S_OK;
690	}
691
692	STDMETHODIMP PerformanceMetric::COMGETTER(MinimumValue) (LONG *aMinValue)
693	{
694	*aMinValue = m.min;
695	return S_OK;
696	}
697
698	STDMETHODIMP PerformanceMetric::COMGETTER(MaximumValue) (LONG *aMaxValue)
699	{
700	*aMaxValue = m.max;
701	return S_OK;
702	}
703	/* vi: set tabstop=4 shiftwidth=4 expandtab: */

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source: vbox/trunk/src/VBox/Main/PerformanceImpl.cpp@ 25860

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