PerformanceImpl.cpp@ 14902

Last change on this file since 14902 was 14772, checked in by vboxsync, 16 years ago
Added vim modelines to aid following coding guidelines, like no tabs, similar to what is already in the xidl file.
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Line
1	/* $Id: PerformanceImpl.cpp 14772 2008-11-28 12:41:22Z 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	#if defined(RT_OS_WINDOWS)
25	#elif defined(RT_OS_LINUX)
26	#endif
27
28	#include "PerformanceImpl.h"
29
30	#include "Logging.h"
31
32	#include <VBox/err.h>
33	#include <iprt/process.h>
34
35	#include <vector>
36	#include <algorithm>
37	#include <functional>
38
39	static Bstr gMetricNames[] =
40	{
41	"CPU/Load/User",
42	"CPU/Load/User:avg",
43	"CPU/Load/User:min",
44	"CPU/Load/User:max",
45	"CPU/Load/Kernel",
46	"CPU/Load/Kernel:avg",
47	"CPU/Load/Kernel:min",
48	"CPU/Load/Kernel:max",
49	"CPU/Load/Idle",
50	"CPU/Load/Idle:avg",
51	"CPU/Load/Idle:min",
52	"CPU/Load/Idle:max",
53	"CPU/MHz",
54	"CPU/MHz:avg",
55	"CPU/MHz:min",
56	"CPU/MHz:max",
57	"RAM/Usage/Total",
58	"RAM/Usage/Total:avg",
59	"RAM/Usage/Total:min",
60	"RAM/Usage/Total:max",
61	"RAM/Usage/Used",
62	"RAM/Usage/Used:avg",
63	"RAM/Usage/Used:min",
64	"RAM/Usage/Used:max",
65	"RAM/Usage/Free",
66	"RAM/Usage/Free:avg",
67	"RAM/Usage/Free:min",
68	"RAM/Usage/Free:max",
69	};
70
71	////////////////////////////////////////////////////////////////////////////////
72	// PerformanceCollector class
73	////////////////////////////////////////////////////////////////////////////////
74
75	// constructor / destructor
76	////////////////////////////////////////////////////////////////////////////////
77
78	PerformanceCollector::PerformanceCollector() : mMagic(0) {}
79
80	PerformanceCollector::~PerformanceCollector() {}
81
82	HRESULT PerformanceCollector::FinalConstruct()
83	{
84	LogFlowThisFunc (("\n"));
85
86	return S_OK;
87	}
88
89	void PerformanceCollector::FinalRelease()
90	{
91	LogFlowThisFunc (("\n"));
92	}
93
94	// public initializer/uninitializer for internal purposes only
95	////////////////////////////////////////////////////////////////////////////////
96
97	/**
98	* Initializes the PerformanceCollector object.
99	*/
100	HRESULT PerformanceCollector::init()
101	{
102	/* Enclose the state transition NotReady->InInit->Ready */
103	AutoInitSpan autoInitSpan (this);
104	AssertReturn (autoInitSpan.isOk(), E_FAIL);
105
106	LogFlowThisFuncEnter();
107
108	HRESULT rc = S_OK;
109
110	m.hal = pm::createHAL();
111
112	/* Let the sampler know it gets a valid collector. */
113	mMagic = MAGIC;
114
115	/* Start resource usage sampler */
116	int vrc = RTTimerLRCreate (&m.sampler, VBOX_USAGE_SAMPLER_MIN_INTERVAL,
117	&PerformanceCollector::staticSamplerCallback, this);
118	AssertMsgRC (vrc, ("Failed to create resource usage "
119	"sampling timer(%Rra)\n", vrc));
120	if (RT_FAILURE (vrc))
121	rc = E_FAIL;
122
123	if (SUCCEEDED (rc))
124	autoInitSpan.setSucceeded();
125
126	LogFlowThisFuncLeave();
127
128	return rc;
129	}
130
131	/**
132	* Uninitializes the PerformanceCollector object.
133	*
134	* Called either from FinalRelease() or by the parent when it gets destroyed.
135	*/
136	void PerformanceCollector::uninit()
137	{
138	LogFlowThisFuncEnter();
139
140	/* Enclose the state transition Ready->InUninit->NotReady */
141	AutoUninitSpan autoUninitSpan (this);
142	if (autoUninitSpan.uninitDone())
143	{
144	LogFlowThisFunc (("Already uninitialized.\n"));
145	LogFlowThisFuncLeave();
146	return;
147	}
148
149	mMagic = 0;
150
151	/* Destroy resource usage sampler */
152	int vrc = RTTimerLRDestroy (m.sampler);
153	AssertMsgRC (vrc, ("Failed to destroy resource usage "
154	"sampling timer (%Rra)\n", vrc));
155	m.sampler = NULL;
156
157	//delete m.factory;
158	//m.factory = NULL;
159
160	delete m.hal;
161	m.hal = NULL;
162
163	LogFlowThisFuncLeave();
164	}
165
166	// IPerformanceCollector properties
167	////////////////////////////////////////////////////////////////////////////////
168
169	STDMETHODIMP
170	PerformanceCollector::COMGETTER(MetricNames) (ComSafeArrayOut (BSTR, theMetricNames))
171	{
172	if (ComSafeArrayOutIsNull (theMetricNames))
173	return E_POINTER;
174
175	AutoCaller autoCaller (this);
176	CheckComRCReturnRC (autoCaller.rc());
177
178	AutoReadLock alock (this);
179
180	com::SafeArray <BSTR> metricNames(RT_ELEMENTS(gMetricNames));
181	for (size_t i = 0; i < RT_ELEMENTS(gMetricNames); i++)
182	{
183	gMetricNames[i].detachTo(&metricNames[i]);
184	}
185	//gMetricNames.detachTo(ComSafeArrayOutArg (theMetricNames));
186	metricNames.detachTo (ComSafeArrayOutArg (theMetricNames));
187
188	return S_OK;
189	}
190
191	// IPerformanceCollector methods
192	////////////////////////////////////////////////////////////////////////////////
193
194	HRESULT PerformanceCollector::toIPerformanceMetric(pm::Metric src, IPerformanceMetric *dst)
195	{
196	ComObjPtr <PerformanceMetric> metric;
197	HRESULT rc = metric.createObject();
198	if (SUCCEEDED (rc))
199	rc = metric->init (src);
200	AssertComRCReturnRC (rc);
201	metric.queryInterfaceTo (dst);
202	return rc;
203	}
204
205	HRESULT PerformanceCollector::toIPerformanceMetric(pm::BaseMetric src, IPerformanceMetric *dst)
206	{
207	ComObjPtr <PerformanceMetric> metric;
208	HRESULT rc = metric.createObject();
209	if (SUCCEEDED (rc))
210	rc = metric->init (src);
211	AssertComRCReturnRC (rc);
212	metric.queryInterfaceTo (dst);
213	return rc;
214	}
215
216	STDMETHODIMP
217	PerformanceCollector::GetMetrics (ComSafeArrayIn (INPTR BSTR, metricNames),
218	ComSafeArrayIn (IUnknown *, objects),
219	ComSafeArrayOut (IPerformanceMetric *, outMetrics))
220	{
221	LogFlowThisFuncEnter();
222	//LogFlowThisFunc (("mState=%d, mType=%d\n", mState, mType));
223
224	HRESULT rc = S_OK;
225
226	AutoCaller autoCaller (this);
227	CheckComRCReturnRC (autoCaller.rc());
228
229	pm::Filter filter (ComSafeArrayInArg (metricNames),
230	ComSafeArrayInArg (objects));
231
232	AutoReadLock alock (this);
233
234	MetricList filteredMetrics;
235	MetricList::iterator it;
236	for (it = m.metrics.begin(); it != m.metrics.end(); ++it)
237	if (filter.match ((it)->getObject(), (it)->getName()))
238	filteredMetrics.push_back (*it);
239
240	com::SafeIfaceArray<IPerformanceMetric> retMetrics (filteredMetrics.size());
241	int i = 0;
242	for (it = filteredMetrics.begin(); it != filteredMetrics.end(); ++it)
243	{
244	ComObjPtr <PerformanceMetric> metric;
245	rc = metric.createObject();
246	if (SUCCEEDED (rc))
247	rc = metric->init (*it);
248	AssertComRCReturnRC (rc);
249	LogFlow (("PerformanceCollector::GetMetrics() store a metric at "
250	"retMetrics[%d]...\n", i));
251	metric.queryInterfaceTo (&retMetrics [i++]);
252	}
253	retMetrics.detachTo (ComSafeArrayOutArg(outMetrics));
254	LogFlowThisFuncLeave();
255	return rc;
256	}
257
258	STDMETHODIMP
259	PerformanceCollector::SetupMetrics (ComSafeArrayIn (INPTR BSTR, metricNames),
260	ComSafeArrayIn (IUnknown *, objects),
261	ULONG aPeriod, ULONG aCount,
262	ComSafeArrayOut (IPerformanceMetric *,
263	outMetrics))
264	{
265	AutoCaller autoCaller (this);
266	CheckComRCReturnRC (autoCaller.rc());
267
268	pm::Filter filter (ComSafeArrayInArg (metricNames),
269	ComSafeArrayInArg (objects));
270
271	AutoWriteLock alock (this);
272
273	HRESULT rc = S_OK;
274	BaseMetricList filteredMetrics;
275	BaseMetricList::iterator it;
276	for (it = m.baseMetrics.begin(); it != m.baseMetrics.end(); ++it)
277	if (filter.match((it)->getObject(), (it)->getName()))
278	{
279	LogFlow (("PerformanceCollector::SetupMetrics() setting period to %u,"
280	" count to %u for %s\n", aPeriod, aCount, (*it)->getName()));
281	(*it)->init(aPeriod, aCount);
282	if (aPeriod == 0 \|\| aCount == 0)
283	{
284	LogFlow (("PerformanceCollector::SetupMetrics() disabling %s\n",
285	(*it)->getName()));
286	(*it)->disable();
287	}
288	else
289	{
290	LogFlow (("PerformanceCollector::SetupMetrics() enabling %s\n",
291	(*it)->getName()));
292	(*it)->enable();
293	}
294	filteredMetrics.push_back(*it);
295	}
296
297	com::SafeIfaceArray<IPerformanceMetric> retMetrics (filteredMetrics.size());
298	int i = 0;
299	for (it = filteredMetrics.begin();
300	it != filteredMetrics.end() && SUCCEEDED (rc); ++it)
301	rc = toIPerformanceMetric(*it, &retMetrics [i++]);
302	retMetrics.detachTo (ComSafeArrayOutArg(outMetrics));
303
304	LogFlowThisFuncLeave();
305	return rc;
306	}
307
308	STDMETHODIMP
309	PerformanceCollector::EnableMetrics (ComSafeArrayIn (INPTR BSTR, metricNames),
310	ComSafeArrayIn (IUnknown *, objects),
311	ComSafeArrayOut (IPerformanceMetric *,
312	outMetrics))
313	{
314	AutoCaller autoCaller (this);
315	CheckComRCReturnRC (autoCaller.rc());
316
317	pm::Filter filter (ComSafeArrayInArg (metricNames),
318	ComSafeArrayInArg (objects));
319
320	AutoWriteLock alock (this); /* Write lock is not needed atm since we are */
321	/* fiddling with enable bit only, but we */
322	/* care for those who come next :-). */
323
324	HRESULT rc = S_OK;
325	BaseMetricList filteredMetrics;
326	BaseMetricList::iterator it;
327	for (it = m.baseMetrics.begin(); it != m.baseMetrics.end(); ++it)
328	if (filter.match((it)->getObject(), (it)->getName()))
329	{
330	(*it)->enable();
331	filteredMetrics.push_back(*it);
332	}
333
334	com::SafeIfaceArray<IPerformanceMetric> retMetrics (filteredMetrics.size());
335	int i = 0;
336	for (it = filteredMetrics.begin();
337	it != filteredMetrics.end() && SUCCEEDED (rc); ++it)
338	rc = toIPerformanceMetric(*it, &retMetrics [i++]);
339	retMetrics.detachTo (ComSafeArrayOutArg(outMetrics));
340
341	LogFlowThisFuncLeave();
342	return rc;
343	}
344
345	STDMETHODIMP
346	PerformanceCollector::DisableMetrics (ComSafeArrayIn (INPTR BSTR, metricNames),
347	ComSafeArrayIn (IUnknown *, objects),
348	ComSafeArrayOut (IPerformanceMetric *,
349	outMetrics))
350	{
351	AutoCaller autoCaller (this);
352	CheckComRCReturnRC (autoCaller.rc());
353
354	pm::Filter filter (ComSafeArrayInArg (metricNames),
355	ComSafeArrayInArg (objects));
356
357	AutoWriteLock alock (this); /* Write lock is not needed atm since we are */
358	/* fiddling with enable bit only, but we */
359	/* care for those who come next :-). */
360
361	HRESULT rc = S_OK;
362	BaseMetricList filteredMetrics;
363	BaseMetricList::iterator it;
364	for (it = m.baseMetrics.begin(); it != m.baseMetrics.end(); ++it)
365	if (filter.match((it)->getObject(), (it)->getName()))
366	{
367	(*it)->disable();
368	filteredMetrics.push_back(*it);
369	}
370
371	com::SafeIfaceArray<IPerformanceMetric> retMetrics (filteredMetrics.size());
372	int i = 0;
373	for (it = filteredMetrics.begin();
374	it != filteredMetrics.end() && SUCCEEDED (rc); ++it)
375	rc = toIPerformanceMetric(*it, &retMetrics [i++]);
376	retMetrics.detachTo (ComSafeArrayOutArg(outMetrics));
377
378	LogFlowThisFuncLeave();
379	return rc;
380	}
381
382	STDMETHODIMP
383	PerformanceCollector::QueryMetricsData (ComSafeArrayIn (INPTR BSTR, metricNames),
384	ComSafeArrayIn (IUnknown *, objects),
385	ComSafeArrayOut (BSTR, outMetricNames),
386	ComSafeArrayOut (IUnknown *, outObjects),
387	ComSafeArrayOut (BSTR, outUnits),
388	ComSafeArrayOut (ULONG, outScales),
389	ComSafeArrayOut (ULONG, outSequenceNumbers),
390	ComSafeArrayOut (ULONG, outDataIndices),
391	ComSafeArrayOut (ULONG, outDataLengths),
392	ComSafeArrayOut (LONG, outData))
393	{
394	AutoCaller autoCaller (this);
395	CheckComRCReturnRC (autoCaller.rc());
396
397	pm::Filter filter (ComSafeArrayInArg (metricNames),
398	ComSafeArrayInArg (objects));
399
400	AutoReadLock alock (this);
401
402	/* Let's compute the size of the resulting flat array */
403	size_t flatSize = 0;
404	MetricList filteredMetrics;
405	MetricList::iterator it;
406	for (it = m.metrics.begin(); it != m.metrics.end(); ++it)
407	if (filter.match ((it)->getObject(), (it)->getName()))
408	{
409	filteredMetrics.push_back (*it);
410	flatSize += (*it)->getLength();
411	}
412
413	int i = 0;
414	size_t flatIndex = 0;
415	size_t numberOfMetrics = filteredMetrics.size();
416	com::SafeArray <BSTR> retNames (numberOfMetrics);
417	com::SafeIfaceArray <IUnknown> retObjects (numberOfMetrics);
418	com::SafeArray <BSTR> retUnits (numberOfMetrics);
419	com::SafeArray <ULONG> retScales (numberOfMetrics);
420	com::SafeArray <ULONG> retSequenceNumbers (numberOfMetrics);
421	com::SafeArray <ULONG> retIndices (numberOfMetrics);
422	com::SafeArray <ULONG> retLengths (numberOfMetrics);
423	com::SafeArray <LONG> retData (flatSize);
424
425	for (it = filteredMetrics.begin(); it != filteredMetrics.end(); ++it, ++i)
426	{
427	ULONG *values, length, sequenceNumber;
428	/* @todo We may want to revise the query method to get rid of excessive alloc/memcpy calls. */
429	(*it)->query(&values, &length, &sequenceNumber);
430	LogFlow (("PerformanceCollector::QueryMetricsData() querying metric %s "
431	"returned %d values.\n", (*it)->getName(), length));
432	memcpy(retData.raw() + flatIndex, values, length * sizeof(*values));
433	Bstr tmp((*it)->getName());
434	tmp.detachTo(&retNames[i]);
435	(*it)->getObject().queryInterfaceTo (&retObjects[i]);
436	tmp = (*it)->getUnit();
437	tmp.detachTo(&retUnits[i]);
438	retScales[i] = (*it)->getScale();
439	retSequenceNumbers[i] = sequenceNumber;
440	retLengths[i] = length;
441	retIndices[i] = flatIndex;
442	flatIndex += length;
443	}
444
445	retNames.detachTo (ComSafeArrayOutArg (outMetricNames));
446	retObjects.detachTo (ComSafeArrayOutArg (outObjects));
447	retUnits.detachTo (ComSafeArrayOutArg (outUnits));
448	retScales.detachTo (ComSafeArrayOutArg (outScales));
449	retSequenceNumbers.detachTo (ComSafeArrayOutArg (outSequenceNumbers));
450	retIndices.detachTo (ComSafeArrayOutArg (outDataIndices));
451	retLengths.detachTo (ComSafeArrayOutArg (outDataLengths));
452	retData.detachTo (ComSafeArrayOutArg (outData));
453	return S_OK;
454	}
455
456	// public methods for internal purposes
457	///////////////////////////////////////////////////////////////////////////////
458
459	void PerformanceCollector::registerBaseMetric (pm::BaseMetric *baseMetric)
460	{
461	//LogFlowThisFuncEnter();
462	AutoCaller autoCaller (this);
463	if (!SUCCEEDED (autoCaller.rc())) return;
464
465	AutoWriteLock alock (this);
466	LogAleksey(("{%p} " LOG_FN_FMT ": obj=%p name=%s\n", this, __PRETTY_FUNCTION__, (void *)baseMetric->getObject(), baseMetric->getName()));
467	m.baseMetrics.push_back (baseMetric);
468	//LogFlowThisFuncLeave();
469	}
470
471	void PerformanceCollector::registerMetric (pm::Metric *metric)
472	{
473	//LogFlowThisFuncEnter();
474	AutoCaller autoCaller (this);
475	if (!SUCCEEDED (autoCaller.rc())) return;
476
477	AutoWriteLock alock (this);
478	LogAleksey(("{%p} " LOG_FN_FMT ": obj=%p name=%s\n", this, __PRETTY_FUNCTION__, (void *)metric->getObject(), metric->getName()));
479	m.metrics.push_back (metric);
480	//LogFlowThisFuncLeave();
481	}
482
483	void PerformanceCollector::unregisterBaseMetricsFor (const ComPtr <IUnknown> &aObject)
484	{
485	//LogFlowThisFuncEnter();
486	AutoCaller autoCaller (this);
487	if (!SUCCEEDED (autoCaller.rc())) return;
488
489	AutoWriteLock alock (this);
490	LogAleksey(("{%p} " LOG_FN_FMT ": before remove_if: m.baseMetrics.size()=%d\n", this, __PRETTY_FUNCTION__, m.baseMetrics.size()));
491	BaseMetricList::iterator it = std::remove_if (
492	m.baseMetrics.begin(), m.baseMetrics.end(), std::bind2nd (
493	std::mem_fun (&pm::BaseMetric::associatedWith), aObject));
494	m.baseMetrics.erase(it, m.baseMetrics.end());
495	LogAleksey(("{%p} " LOG_FN_FMT ": after remove_if: m.baseMetrics.size()=%d\n", this, __PRETTY_FUNCTION__, m.baseMetrics.size()));
496	//LogFlowThisFuncLeave();
497	}
498
499	void PerformanceCollector::unregisterMetricsFor (const ComPtr <IUnknown> &aObject)
500	{
501	//LogFlowThisFuncEnter();
502	AutoCaller autoCaller (this);
503	if (!SUCCEEDED (autoCaller.rc())) return;
504
505	AutoWriteLock alock (this);
506	LogAleksey(("{%p} " LOG_FN_FMT ": obj=%p\n", this, __PRETTY_FUNCTION__, (void *)aObject));
507	MetricList::iterator it = std::remove_if (
508	m.metrics.begin(), m.metrics.end(), std::bind2nd (
509	std::mem_fun (&pm::Metric::associatedWith), aObject));
510	m.metrics.erase(it, m.metrics.end());
511	//LogFlowThisFuncLeave();
512	}
513
514	// private methods
515	///////////////////////////////////////////////////////////////////////////////
516
517	/* static */
518	void PerformanceCollector::staticSamplerCallback (RTTIMERLR hTimerLR, void *pvUser,
519	uint64_t iTick)
520	{
521	AssertReturnVoid (pvUser != NULL);
522	PerformanceCollector collector = static_cast <PerformanceCollector > (pvUser);
523	Assert (collector->mMagic == MAGIC);
524	if (collector->mMagic == MAGIC)
525	{
526	collector->samplerCallback();
527	}
528	NOREF (hTimerLR);
529	}
530
531	void PerformanceCollector::samplerCallback()
532	{
533	Log4(("{%p} " LOG_FN_FMT ": ENTER\n", this, __PRETTY_FUNCTION__));
534	AutoWriteLock alock (this);
535
536	pm::CollectorHints hints;
537	uint64_t timestamp = RTTimeMilliTS();
538	BaseMetricList toBeCollected;
539	BaseMetricList::iterator it;
540	/* Compose the list of metrics being collected at this moment */
541	for (it = m.baseMetrics.begin(); it != m.baseMetrics.end(); it++)
542	if ((*it)->collectorBeat(timestamp))
543	{
544	(*it)->preCollect(hints);
545	toBeCollected.push_back(*it);
546	}
547
548	if (toBeCollected.size() == 0)
549	return;
550
551	/* Let know the platform specific code what is being collected */
552	m.hal->preCollect(hints);
553
554	/* Finally, collect the data */
555	std::for_each (toBeCollected.begin(), toBeCollected.end(),
556	std::mem_fun (&pm::BaseMetric::collect));
557	Log4(("{%p} " LOG_FN_FMT ": LEAVE\n", this, __PRETTY_FUNCTION__));
558	}
559
560	////////////////////////////////////////////////////////////////////////////////
561	// PerformanceMetric class
562	////////////////////////////////////////////////////////////////////////////////
563
564	// constructor / destructor
565	////////////////////////////////////////////////////////////////////////////////
566
567	PerformanceMetric::PerformanceMetric()
568	{
569	}
570
571	PerformanceMetric::~PerformanceMetric()
572	{
573	}
574
575	HRESULT PerformanceMetric::FinalConstruct()
576	{
577	LogFlowThisFunc (("\n"));
578
579	return S_OK;
580	}
581
582	void PerformanceMetric::FinalRelease()
583	{
584	LogFlowThisFunc (("\n"));
585
586	uninit ();
587	}
588
589	// public initializer/uninitializer for internal purposes only
590	////////////////////////////////////////////////////////////////////////////////
591
592	HRESULT PerformanceMetric::init (pm::Metric *aMetric)
593	{
594	m.name = aMetric->getName();
595	m.object = aMetric->getObject();
596	m.description = aMetric->getDescription();
597	m.period = aMetric->getPeriod();
598	m.count = aMetric->getLength();
599	m.unit = aMetric->getUnit();
600	m.min = aMetric->getMinValue();
601	m.max = aMetric->getMaxValue();
602	return S_OK;
603	}
604
605	HRESULT PerformanceMetric::init (pm::BaseMetric *aMetric)
606	{
607	m.name = aMetric->getName();
608	m.object = aMetric->getObject();
609	m.description = "";
610	m.period = aMetric->getPeriod();
611	m.count = aMetric->getLength();
612	m.unit = aMetric->getUnit();
613	m.min = aMetric->getMinValue();
614	m.max = aMetric->getMaxValue();
615	return S_OK;
616	}
617
618	void PerformanceMetric::uninit()
619	{
620	}
621
622	STDMETHODIMP PerformanceMetric::COMGETTER(MetricName) (BSTR *aMetricName)
623	{
624	/// @todo (r=dmik) why do all these getters not do AutoCaller and
625	/// AutoReadLock? Is the underlying metric a constant object?
626
627	m.name.cloneTo (aMetricName);
628	return S_OK;
629	}
630
631	STDMETHODIMP PerformanceMetric::COMGETTER(Object) (IUnknown **anObject)
632	{
633	m.object.queryInterfaceTo(anObject);
634	return S_OK;
635	}
636
637	STDMETHODIMP PerformanceMetric::COMGETTER(Description) (BSTR *aDescription)
638	{
639	m.description.cloneTo (aDescription);
640	return S_OK;
641	}
642
643	STDMETHODIMP PerformanceMetric::COMGETTER(Period) (ULONG *aPeriod)
644	{
645	*aPeriod = m.period;
646	return S_OK;
647	}
648
649	STDMETHODIMP PerformanceMetric::COMGETTER(Count) (ULONG *aCount)
650	{
651	*aCount = m.count;
652	return S_OK;
653	}
654
655	STDMETHODIMP PerformanceMetric::COMGETTER(Unit) (BSTR *aUnit)
656	{
657	m.unit.cloneTo(aUnit);
658	return S_OK;
659	}
660
661	STDMETHODIMP PerformanceMetric::COMGETTER(MinimumValue) (LONG *aMinValue)
662	{
663	*aMinValue = m.min;
664	return S_OK;
665	}
666
667	STDMETHODIMP PerformanceMetric::COMGETTER(MaximumValue) (LONG *aMaxValue)
668	{
669	*aMaxValue = m.max;
670	return S_OK;
671	}
672	/* vi: set tabstop=4 shiftwidth=4 expandtab: */

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source: vbox/trunk/src/VBox/Main/PerformanceImpl.cpp@ 14902

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