STAM.cpp@ 2244

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1	/* $Id: STAM.cpp 2244 2007-04-19 21:13:36Z vboxsync $ */
2	/** @file
3	* STAM - The Statistics Manager.
4	*/
5
6	/*
7	* Copyright (C) 2006 InnoTek Systemberatung GmbH
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 as published by the Free Software Foundation,
13	* in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
14	* distribution. VirtualBox OSE is distributed in the hope that it will
15	* be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* If you received this file as part of a commercial VirtualBox
18	* distribution, then only the terms of your commercial VirtualBox
19	* license agreement apply instead of the previous paragraph.
20	*/
21
22
23	/*******************************************************************************
24	* Header Files *
25	*******************************************************************************/
26	#define LOG_GROUP LOG_GROUP_STAM
27	#include <VBox/stam.h>
28	#include "STAMInternal.h"
29	#include <VBox/vm.h>
30	#include <VBox/err.h>
31	#include <VBox/dbg.h>
32	#include <VBox/log.h>
33
34	#include <iprt/assert.h>
35	#include <iprt/asm.h>
36	#include <iprt/alloc.h>
37	#include <iprt/stream.h>
38	#include <iprt/string.h>
39
40
41	/*******************************************************************************
42	* Structures and Typedefs *
43	*******************************************************************************/
44	/**
45	* Argument structure for stamR3PrintOne().
46	*/
47	typedef struct STAMR3PRINTONEARGS
48	{
49	PVM pVM;
50	void *pvArg;
51	DECLCALLBACKMEMBER(void, pfnPrintf)(struct STAMR3PRINTONEARGS pvArg, const char pszFormat, ...);
52	} STAMR3PRINTONEARGS, *PSTAMR3PRINTONEARGS;
53
54
55	/**
56	* Argument structure to stamR3EnumOne().
57	*/
58	typedef struct STAMR3ENUMONEARGS
59	{
60	PVM pVM;
61	PFNSTAMR3ENUM pfnEnum;
62	void *pvUser;
63	} STAMR3ENUMONEARGS, *PSTAMR3ENUMONEARGS;
64
65
66	/*******************************************************************************
67	* Internal Functions *
68	*******************************************************************************/
69	static int stamR3Register(PVM pVM, void *pvSample, PFNSTAMR3CALLBACKRESET pfnReset, PFNSTAMR3CALLBACKPRINT pfnPrint,
70	STAMTYPE enmType, STAMVISIBILITY enmVisibility, const char pszName, STAMUNIT enmUnit, const char pszDesc);
71	static int stamR3ResetOne(PSTAMDESC pDesc, void *pvArg);
72	static DECLCALLBACK(void) stamR3EnumLogPrintf(PSTAMR3PRINTONEARGS pvArg, const char *pszFormat, ...);
73	static DECLCALLBACK(void) stamR3EnumRelLogPrintf(PSTAMR3PRINTONEARGS pvArg, const char *pszFormat, ...);
74	static DECLCALLBACK(void) stamR3EnumPrintf(PSTAMR3PRINTONEARGS pvArg, const char *pszFormat, ...);
75	static int stamR3PrintOne(PSTAMDESC pDesc, void *pvArg);
76	static int stamR3EnumOne(PSTAMDESC pDesc, void *pvArg);
77	static int stamR3Enum(PVM pVM, const char pszPat, int (pfnCallback)(PSTAMDESC pDesc, void pvArg), void *pvArg);
78
79	#ifdef VBOX_WITH_DEBUGGER
80	static DECLCALLBACK(int) stamR3CmdStats(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult);
81	static DECLCALLBACK(void) stamR3EnumDbgfPrintf(PSTAMR3PRINTONEARGS pArgs, const char *pszFormat, ...);
82	static DECLCALLBACK(int) stamR3CmdStatsReset(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult);
83	#endif
84
85
86	/*******************************************************************************
87	* Global Variables *
88	*******************************************************************************/
89	#ifdef VBOX_WITH_DEBUGGER
90	/** Pattern argument. */
91	static const DBGCVARDESC g_aArgPat[] =
92	{
93	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
94	{ 0, 1, DBGCVAR_CAT_STRING, 0, "pattern", "Which samples the command shall be applied to. Use '*' as wildcard. Use ';' to separate expression." }
95	};
96
97	/** Command descriptors. */
98	static const DBGCCMD g_aCmds[] =
99	{
100	/* pszCmd, cArgsMin, cArgsMax, paArgDesc, cArgDescs, pResultDesc, fFlags, pfnHandler pszSyntax, ....pszDescription */
101	{ "stats", 0, 1, &g_aArgPat[0], ELEMENTS(g_aArgPat), NULL, 0, stamR3CmdStats, "[pattern]", "Display statistics." },
102	{ "statsreset", 0, 1, &g_aArgPat[0], ELEMENTS(g_aArgPat), NULL, 0, stamR3CmdStatsReset,"[pattern]", "Resets statistics." }
103	};
104	#endif
105
106
107
108	/**
109	* Initializes the STAM.
110	*
111	* @returns VBox status code.
112	* @param pVM The VM to operate on.
113	*/
114	STAMR3DECL(int) STAMR3Init(PVM pVM)
115	{
116	LogFlow(("STAMR3Init\n"));
117
118	/*
119	* Assert alignment and sizes.
120	*/
121	AssertRelease(!(RT_OFFSETOF(VM, stam.s) & 31));
122	AssertRelease(sizeof(pVM->stam.s) <= sizeof(pVM->stam.padding));
123
124	/*
125	* Setup any fixed pointers and offsets.
126	*/
127	pVM->stam.s.offVM = RT_OFFSETOF(VM, stam);
128	int rc = RTSemRWCreate(&pVM->stam.s.RWSem);
129	AssertRC(rc);
130	if (VBOX_FAILURE(rc))
131	return rc;
132
133	#ifdef VBOX_WITH_DEBUGGER
134	/*
135	* Register debugger commands.
136	*/
137	static bool fRegisteredCmds = false;
138	if (!fRegisteredCmds)
139	{
140	int rc = DBGCRegisterCommands(&g_aCmds[0], ELEMENTS(g_aCmds));
141	if (VBOX_SUCCESS(rc))
142	fRegisteredCmds = true;
143	}
144	#endif
145
146	return VINF_SUCCESS;
147	}
148
149
150	/**
151	* Applies relocations to data and code managed by this
152	* component. This function will be called at init and
153	* whenever the VMM need to relocate it self inside the GC.
154	*
155	* @param pVM The VM.
156	*/
157	STAMR3DECL(void) STAMR3Relocate(PVM pVM)
158	{
159	LogFlow(("STAMR3Relocate\n"));
160	NOREF(pVM);
161	}
162
163
164	/**
165	* Terminates the STAM.
166	*
167	* Termination means cleaning up and freeing all resources,
168	* the VM it self is at this point powered off or suspended.
169	*
170	* @returns VBox status code.
171	* @param pVM The VM to operate on.
172	*/
173	STAMR3DECL(int) STAMR3Term(PVM pVM)
174	{
175	/*
176	* Free used memory and RWLock.
177	*/
178	PSTAMDESC pCur = pVM->stam.s.pHead;
179	while (pCur)
180	{
181	void *pvFree = pCur;
182	pCur = pCur->pNext;
183	RTMemFree(pvFree);
184	}
185
186	RTSemRWDestroy(pVM->stam.s.RWSem);
187	return VINF_SUCCESS;
188	}
189
190
191
192
193	/**
194	* Registers a sample with the statistics mamanger.
195	*
196	* Statistics are maintained on a per VM basis and should therefore
197	* be registered during the VM init stage. However, there is not problem
198	* registering temporary samples or samples for hotpluggable devices. Samples
199	* can be deregisterd using the STAMR3Deregister() function, but note that
200	* this is only necessary for temporary samples or hotpluggable devices.
201	*
202	* It is not possible to register the same sample twice.
203	*
204	* @returns VBox status.
205	* @param pVM The VM handle.
206	* @param pvSample Pointer to the sample.
207	* @param enmType Sample type. This indicates what pvSample is pointing at.
208	* @param enmVisibility Visibility type specifying whether unused statistics should be visible or not.
209	* @param pszName Sample name. The name is on this form "/<component>/<sample>".
210	* Further nesting is possible.
211	* @param enmUnit Sample unit.
212	* @param pszDesc Sample description.
213	*/
214	STAMR3DECL(int) STAMR3Register(PVM pVM, void pvSample, STAMTYPE enmType, STAMVISIBILITY enmVisibility, const char pszName, STAMUNIT enmUnit, const char *pszDesc)
215	{
216	AssertReturn(enmType != STAMTYPE_CALLBACK, VERR_INVALID_PARAMETER);
217	return stamR3Register(pVM, pvSample, NULL, NULL, enmType, enmVisibility, pszName, enmUnit, pszDesc);
218	}
219
220
221	/**
222	* Same as STAMR3Register except that the name is specified in a
223	* RTStrPrintf like fashion.
224	*
225	* @returns VBox status.
226	* @param pVM The VM handle.
227	* @param pvSample Pointer to the sample.
228	* @param enmType Sample type. This indicates what pvSample is pointing at.
229	* @param enmVisibility Visibility type specifying whether unused statistics should be visible or not.
230	* @param enmUnit Sample unit.
231	* @param pszDesc Sample description.
232	* @param pszName The sample name format string.
233	* @param ... Arguments to the format string.
234	*/
235	STAMR3DECL(int) STAMR3RegisterF(PVM pVM, void *pvSample, STAMTYPE enmType, STAMVISIBILITY enmVisibility, STAMUNIT enmUnit,
236	const char pszDesc, const char pszName, ...)
237	{
238	va_list args;
239	va_start(args, pszName);
240	int rc = STAMR3RegisterV(pVM, pvSample, enmType, enmVisibility, enmUnit, pszDesc, pszName, args);
241	va_end(args);
242	return rc;
243	}
244
245
246	/**
247	* Same as STAMR3Register except that the name is specified in a
248	* RTStrPrintfV like fashion.
249	*
250	* @returns VBox status.
251	* @param pVM The VM handle.
252	* @param pvSample Pointer to the sample.
253	* @param enmType Sample type. This indicates what pvSample is pointing at.
254	* @param enmVisibility Visibility type specifying whether unused statistics should be visible or not.
255	* @param enmUnit Sample unit.
256	* @param pszDesc Sample description.
257	* @param pszName The sample name format string.
258	* @param args Arguments to the format string.
259	*/
260	STAMR3DECL(int) STAMR3RegisterV(PVM pVM, void *pvSample, STAMTYPE enmType, STAMVISIBILITY enmVisibility, STAMUNIT enmUnit,
261	const char pszDesc, const char pszName, va_list args)
262	{
263	AssertReturn(enmType != STAMTYPE_CALLBACK, VERR_INVALID_PARAMETER);
264
265	char *pszFormattedName;
266	RTStrAPrintfV(&pszFormattedName, pszName, args);
267	if (!pszFormattedName)
268	return VERR_NO_MEMORY;
269
270	int rc = STAMR3Register(pVM, pvSample, enmType, enmVisibility, pszFormattedName, enmUnit, pszDesc);
271	RTStrFree(pszFormattedName);
272	return rc;
273	}
274
275
276	/**
277	* Similar to STAMR3Register except for the two callbacks, the implied type (STAMTYPE_CALLBACK),
278	* and name given in an RTStrPrintf like fashion.
279	*
280	* @returns VBox status.
281	* @param pVM The VM handle.
282	* @param pvSample Pointer to the sample.
283	* @param enmVisibility Visibility type specifying whether unused statistics should be visible or not.
284	* @param enmUnit Sample unit.
285	* @param pfnReset Callback for resetting the sample. NULL should be used if the sample can't be reset.
286	* @param pfnPrint Print the sample.
287	* @param pszDesc Sample description.
288	* @param pszName The sample name format string.
289	* @param ... Arguments to the format string.
290	* @remark There is currently no device or driver variant of this API. Add one if it should become necessary!
291	*/
292	STAMR3DECL(int) STAMR3RegisterCallback(PVM pVM, void *pvSample, STAMVISIBILITY enmVisibility, STAMUNIT enmUnit,
293	PFNSTAMR3CALLBACKRESET pfnReset, PFNSTAMR3CALLBACKPRINT pfnPrint,
294	const char pszDesc, const char pszName, ...)
295	{
296	va_list args;
297	va_start(args, pszName);
298	int rc = STAMR3RegisterCallbackV(pVM, pvSample, enmVisibility, enmUnit, pfnReset, pfnPrint, pszDesc, pszName, args);
299	va_end(args);
300	return rc;
301	}
302
303
304	/**
305	* Same as STAMR3RegisterCallback() except for the ellipsis which is a va_list here.
306	*
307	* @returns VBox status.
308	* @param pVM The VM handle.
309	* @param pvSample Pointer to the sample.
310	* @param enmVisibility Visibility type specifying whether unused statistics should be visible or not.
311	* @param enmUnit Sample unit.
312	* @param pfnReset Callback for resetting the sample. NULL should be used if the sample can't be reset.
313	* @param pfnPrint Print the sample.
314	* @param pszDesc Sample description.
315	* @param pszName The sample name format string.
316	* @param args Arguments to the format string.
317	* @remark There is currently no device or driver variant of this API. Add one if it should become necessary!
318	*/
319	STAMR3DECL(int) STAMR3RegisterCallbackV(PVM pVM, void *pvSample, STAMVISIBILITY enmVisibility, STAMUNIT enmUnit,
320	PFNSTAMR3CALLBACKRESET pfnReset, PFNSTAMR3CALLBACKPRINT pfnPrint,
321	const char pszDesc, const char pszName, va_list args)
322	{
323	char *pszFormattedName;
324	RTStrAPrintfV(&pszFormattedName, pszName, args);
325	if (!pszFormattedName)
326	return VERR_NO_MEMORY;
327
328	int rc = stamR3Register(pVM, pvSample, pfnReset, pfnPrint, STAMTYPE_CALLBACK, enmVisibility, pszFormattedName, enmUnit, pszDesc);
329	RTStrFree(pszFormattedName);
330	return rc;
331	}
332
333
334	/**
335	* Internal worker for the different register calls.
336	*
337	* @returns VBox status.
338	* @param pVM The VM handle.
339	* @param pvSample Pointer to the sample.
340	* @param pfnReset Callback for resetting the sample. NULL should be used if the sample can't be reset.
341	* @param pfnPrint Print the sample.
342	* @param enmType Sample type. This indicates what pvSample is pointing at.
343	* @param enmVisibility Visibility type specifying whether unused statistics should be visible or not.
344	* @param enmUnit Sample unit.
345	* @param pszDesc Sample description.
346	* @param pszName The sample name format string.
347	* @param args Arguments to the format string.
348	* @remark There is currently no device or driver variant of this API. Add one if it should become necessary!
349	*/
350	static int stamR3Register(PVM pVM, void *pvSample, PFNSTAMR3CALLBACKRESET pfnReset, PFNSTAMR3CALLBACKPRINT pfnPrint,
351	STAMTYPE enmType, STAMVISIBILITY enmVisibility, const char pszName, STAMUNIT enmUnit, const char pszDesc)
352	{
353	STAM_LOCK_WR(pVM);
354
355	/*
356	* Check if exists.
357	*/
358	PSTAMDESC pPrev = NULL;
359	PSTAMDESC pCur = pVM->stam.s.pHead;
360	while (pCur)
361	{
362	int iDiff = strcmp(pCur->pszName, pszName);
363	/* passed it */
364	if (iDiff > 0)
365	break;
366	/* found it. */
367	if (!iDiff)
368	{
369	STAM_UNLOCK_WR(pVM);
370	AssertMsgFailed(("Duplicate sample name: %s\n", pszName));
371	return VERR_ALREADY_EXISTS;
372	}
373
374	/* next */
375	pPrev = pCur;
376	pCur = pCur->pNext;
377	}
378
379	/*
380	* Create a new node and insert it at the current location.
381	*/
382	int rc;
383	int cchName = strlen(pszName) + 1;
384	int cchDesc = pszDesc ? strlen(pszDesc) + 1 : 0;
385	PSTAMDESC pNew = (PSTAMDESC)RTMemAlloc(sizeof(*pNew) + cchName + cchDesc);
386	if (pNew)
387	{
388	pNew->pszName = (char )memcpy((char )(pNew + 1), pszName, cchName);
389	pNew->enmType = enmType;
390	pNew->enmVisibility = enmVisibility;
391	if (enmType != STAMTYPE_CALLBACK)
392	pNew->u.pv = pvSample;
393	else
394	{
395	pNew->u.Callback.pvSample = pvSample;
396	pNew->u.Callback.pfnReset = pfnReset;
397	pNew->u.Callback.pfnPrint = pfnPrint;
398	}
399	pNew->enmUnit = enmUnit;
400	pNew->pszDesc = NULL;
401	if (pszDesc)
402	pNew->pszDesc = (char )memcpy((char )(pNew + 1) + cchName, pszDesc, cchDesc);
403
404	pNew->pNext = pCur;
405	if (pPrev)
406	pPrev->pNext = pNew;
407	else
408	pVM->stam.s.pHead = pNew;
409
410	stamR3ResetOne(pNew, pVM);
411	rc = VINF_SUCCESS;
412	}
413	else
414	rc = VERR_NO_MEMORY;
415
416	STAM_UNLOCK_WR(pVM);
417	return rc;
418	}
419
420
421	/**
422	* Deregisters a sample previously registered by STAR3Register().
423	*
424	* This is intended used for devices which can be unplugged and for
425	* temporary samples.
426	*
427	* @returns VBox status.
428	* @param pVM The VM handle.
429	* @param pvSample Pointer to the sample registered with STAMR3Register().
430	*/
431	STAMR3DECL(int) STAMR3Deregister(PVM pVM, void *pvSample)
432	{
433	STAM_LOCK_WR(pVM);
434
435	/*
436	* Search for it.
437	*/
438	int rc = VERR_INVALID_HANDLE;
439	PSTAMDESC pPrev = NULL;
440	PSTAMDESC pCur = pVM->stam.s.pHead;
441	while (pCur)
442	{
443	if (pCur->u.pv == pvSample)
444	{
445	void *pvFree = pCur;
446	pCur = pCur->pNext;
447	if (pPrev)
448	pPrev->pNext = pCur;
449	else
450	pVM->stam.s.pHead = pCur;
451
452	RTMemFree(pvFree);
453	rc = VINF_SUCCESS;
454	continue;
455	}
456
457	/* next */
458	pPrev = pCur;
459	pCur = pCur->pNext;
460	}
461
462	STAM_UNLOCK_WR(pVM);
463	return rc;
464	}
465
466
467	/**
468	* Resets statistics for the specified VM.
469	* It's possible to select a subset of the samples.
470	*
471	* @returns VBox status. (Basically, it cannot fail.)
472	* @param pVM The VM handle.
473	* @param pszPat The name matching pattern. See somewhere_where_this_is_described_in_detail.
474	* If NULL all samples are reset.
475	*/
476	STAMR3DECL(int) STAMR3Reset(PVM pVM, const char *pszPat)
477	{
478	STAM_LOCK_WR(pVM);
479	stamR3Enum(pVM, pszPat, stamR3ResetOne, pVM);
480	STAM_UNLOCK_WR(pVM);
481	return VINF_SUCCESS;
482	}
483
484
485	/**
486	* Resets one statistics sample.
487	* Callback for stamR3Enum().
488	*
489	* @returns VINF_SUCCESS
490	* @param pDesc Pointer to the current descriptor.
491	* @param pvArg User argument - The VM handle.
492	*/
493	static int stamR3ResetOne(PSTAMDESC pDesc, void *pvArg)
494	{
495	switch (pDesc->enmType)
496	{
497	case STAMTYPE_COUNTER:
498	ASMAtomicXchgU64(&pDesc->u.pCounter->c, 0);
499	break;
500
501	case STAMTYPE_PROFILE:
502	case STAMTYPE_PROFILE_ADV:
503	ASMAtomicXchgU64(&pDesc->u.pProfile->cPeriods, 0);
504	ASMAtomicXchgU64(&pDesc->u.pProfile->cTicks, 0);
505	ASMAtomicXchgU64(&pDesc->u.pProfile->cTicksMax, 0);
506	ASMAtomicXchgU64(&pDesc->u.pProfile->cTicksMin, ~0);
507	break;
508
509	case STAMTYPE_RATIO_U32_RESET:
510	ASMAtomicXchgU32(&pDesc->u.pRatioU32->u32A, 0);
511	ASMAtomicXchgU32(&pDesc->u.pRatioU32->u32B, 0);
512	break;
513
514	case STAMTYPE_CALLBACK:
515	if (pDesc->u.Callback.pfnReset)
516	pDesc->u.Callback.pfnReset((PVM)pvArg, pDesc->u.Callback.pvSample);
517	break;
518
519	case STAMTYPE_U8_RESET:
520	case STAMTYPE_X8_RESET:
521	ASMAtomicXchgU8(pDesc->u.pu8, 0);
522	break;
523
524	case STAMTYPE_U16_RESET:
525	case STAMTYPE_X16_RESET:
526	ASMAtomicXchgU16(pDesc->u.pu16, 0);
527	break;
528
529	case STAMTYPE_U32_RESET:
530	case STAMTYPE_X32_RESET:
531	ASMAtomicXchgU32(pDesc->u.pu32, 0);
532	break;
533
534	case STAMTYPE_U64_RESET:
535	case STAMTYPE_X64_RESET:
536	ASMAtomicXchgU64(pDesc->u.pu64, 0);
537	break;
538
539	/* These are custom and will not be touched. */
540	case STAMTYPE_U8:
541	case STAMTYPE_X8:
542	case STAMTYPE_U16:
543	case STAMTYPE_X16:
544	case STAMTYPE_U32:
545	case STAMTYPE_X32:
546	case STAMTYPE_U64:
547	case STAMTYPE_X64:
548	case STAMTYPE_RATIO_U32:
549	break;
550
551	default:
552	AssertMsgFailed(("enmType=%d\n", pDesc->enmType));
553	break;
554	}
555	NOREF(pvArg);
556	return VINF_SUCCESS;
557	}
558
559
560	/**
561	* Get a snapshot of the statistics.
562	* It's possible to select a subset of the samples.
563	*
564	* @returns VBox status. (Basically, it cannot fail.)
565	* @param pVM The VM handle.
566	* @param pszPat The name matching pattern. See somewhere_where_this_is_described_in_detail.
567	* If NULL all samples are reset.
568	* @param ppszSnapshot Where to store the pointer to the snapshot data.
569	* The format of the snapshot should be XML, but that will have to be discussed
570	* when this function is implemented.
571	* The returned pointer must be freed by calling STAMR3SnapshotFree().
572	* @param pcchSnapshot Where to store the size of the snapshot data. (Excluding the trailing '\0')
573	*/
574	STAMR3DECL(int) STAMR3Snapshot(PVM pVM, const char pszPat, char ppszSnapshot, size_t pcchSnapshot)
575	{
576	AssertMsgFailed(("not implemented yet\n"));
577	return VERR_NOT_IMPLEMENTED;
578	}
579
580
581	/**
582	* Releases a statistics snapshot returned by STAMR3Snapshot().
583	*
584	* @returns VBox status.
585	* @param pVM The VM handle.
586	* @param pszSnapshot The snapshot data pointer returned by STAMR3Snapshot().
587	* NULL is allowed.
588	*/
589	STAMR3DECL(int) STAMR3SnapshotFree(PVM pVM, char *pszSnapshot)
590	{
591	if (!pszSnapshot)
592	RTMemFree(pszSnapshot);
593	return VINF_SUCCESS;
594	}
595
596
597	/**
598	* Dumps the selected statistics to the log.
599	*
600	* @returns VBox status.
601	* @param pVM The VM handle.
602	* @param pszPat The name matching pattern. See somewhere_where_this_is_described_in_detail.
603	* If NULL all samples are written to the log.
604	*/
605	STAMR3DECL(int) STAMR3Dump(PVM pVM, const char *pszPat)
606	{
607	STAMR3PRINTONEARGS Args;
608	Args.pVM = pVM;
609	Args.pvArg = NULL;
610	Args.pfnPrintf = stamR3EnumLogPrintf;
611
612	STAM_LOCK_RD(pVM);
613	stamR3Enum(pVM, pszPat, stamR3PrintOne, &Args);
614	STAM_UNLOCK_RD(pVM);
615	return VINF_SUCCESS;
616	}
617
618
619	/**
620	* Prints to the log.
621	*
622	* @param pArgs Pointer to the print one argument structure.
623	* @param pszFormat Format string.
624	* @param ... Format arguments.
625	*/
626	static DECLCALLBACK(void) stamR3EnumLogPrintf(PSTAMR3PRINTONEARGS pArgs, const char *pszFormat, ...)
627	{
628	va_list va;
629	va_start(va, pszFormat);
630	RTLogPrintfV(pszFormat, va);
631	va_end(va);
632	NOREF(pArgs);
633	}
634
635
636	/**
637	* Dumps the selected statistics to the release log.
638	*
639	* @returns VBox status.
640	* @param pVM The VM handle.
641	* @param pszPat The name matching pattern. See somewhere_where_this_is_described_in_detail.
642	* If NULL all samples are written to the log.
643	*/
644	STAMR3DECL(int) STAMR3DumpToReleaseLog(PVM pVM, const char *pszPat)
645	{
646	STAMR3PRINTONEARGS Args;
647	Args.pVM = pVM;
648	Args.pvArg = NULL;
649	Args.pfnPrintf = stamR3EnumRelLogPrintf;
650
651	STAM_LOCK_RD(pVM);
652	stamR3Enum(pVM, pszPat, stamR3PrintOne, &Args);
653	STAM_UNLOCK_RD(pVM);
654
655	return VINF_SUCCESS;
656	}
657
658
659	/**
660	* Prints to the release log.
661	*
662	* @param pArgs Pointer to the print one argument structure.
663	* @param pszFormat Format string.
664	* @param ... Format arguments.
665	*/
666	static DECLCALLBACK(void) stamR3EnumRelLogPrintf(PSTAMR3PRINTONEARGS pArgs, const char *pszFormat, ...)
667	{
668	va_list va;
669	va_start(va, pszFormat);
670	RTLogRelPrintfV(pszFormat, va);
671	va_end(va);
672	NOREF(pArgs);
673	}
674
675
676	/**
677	* Prints the selected statistics to standard out.
678	*
679	* @returns VBox status.
680	* @param pVM The VM handle.
681	* @param pszPat The name matching pattern. See somewhere_where_this_is_described_in_detail.
682	* If NULL all samples are reset.
683	*/
684	STAMR3DECL(int) STAMR3Print(PVM pVM, const char *pszPat)
685	{
686	STAMR3PRINTONEARGS Args;
687	Args.pVM = pVM;
688	Args.pvArg = NULL;
689	Args.pfnPrintf = stamR3EnumPrintf;
690
691	STAM_LOCK_RD(pVM);
692	stamR3Enum(pVM, pszPat, stamR3PrintOne, &Args);
693	STAM_UNLOCK_RD(pVM);
694	return VINF_SUCCESS;
695	}
696
697
698	/**
699	* Prints to stdout.
700	*
701	* @param pArgs Pointer to the print one argument structure.
702	* @param pszFormat Format string.
703	* @param ... Format arguments.
704	*/
705	static DECLCALLBACK(void) stamR3EnumPrintf(PSTAMR3PRINTONEARGS pArgs, const char *pszFormat, ...)
706	{
707	va_list va;
708	va_start(va, pszFormat);
709	RTPrintfV(pszFormat, va);
710	va_end(va);
711	NOREF(pArgs);
712	}
713
714
715	/**
716	* Prints one sample.
717	* Callback for stamR3Enum().
718	*
719	* @returns VINF_SUCCESS
720	* @param pDesc Pointer to the current descriptor.
721	* @param pvArg User argument - STAMR3PRINTONEARGS.
722	*/
723	static int stamR3PrintOne(PSTAMDESC pDesc, void *pvArg)
724	{
725	PSTAMR3PRINTONEARGS pArgs = (PSTAMR3PRINTONEARGS)pvArg;
726
727	switch (pDesc->enmType)
728	{
729	case STAMTYPE_COUNTER:
730	if (pDesc->enmVisibility == STAMVISIBILITY_USED && pDesc->u.pCounter->c == 0)
731	return VINF_SUCCESS;
732
733	pArgs->pfnPrintf(pArgs, "%-32s %8llu %s\n", pDesc->pszName, pDesc->u.pCounter->c, STAMR3GetUnit(pDesc->enmUnit));
734	break;
735	case STAMTYPE_PROFILE:
736	case STAMTYPE_PROFILE_ADV:
737	{
738	if (pDesc->enmVisibility == STAMVISIBILITY_USED && pDesc->u.pProfile->cPeriods == 0)
739	return VINF_SUCCESS;
740
741	uint64_t u64 = pDesc->u.pProfile->cPeriods ? pDesc->u.pProfile->cPeriods : 1;
742	pArgs->pfnPrintf(pArgs, "%-32s %8llu %s (%12llu ticks, %7llu times, max %9llu, min %7lld)\n", pDesc->pszName,
743	pDesc->u.pProfile->cTicks / u64, STAMR3GetUnit(pDesc->enmUnit),
744	pDesc->u.pProfile->cTicks, pDesc->u.pProfile->cPeriods, pDesc->u.pProfile->cTicksMax, pDesc->u.pProfile->cTicksMin);
745	break;
746	}
747
748	case STAMTYPE_RATIO_U32:
749	case STAMTYPE_RATIO_U32_RESET:
750	if (pDesc->enmVisibility == STAMVISIBILITY_USED && !pDesc->u.pRatioU32->u32A && !pDesc->u.pRatioU32->u32B)
751	return VINF_SUCCESS;
752	pArgs->pfnPrintf(pArgs, "%-32s %8u:%-8u %s\n", pDesc->pszName,
753	pDesc->u.pRatioU32->u32A, pDesc->u.pRatioU32->u32B, STAMR3GetUnit(pDesc->enmUnit));
754	break;
755
756	case STAMTYPE_CALLBACK:
757	{
758	char szBuf[512];
759	pDesc->u.Callback.pfnPrint(pArgs->pVM, pDesc->u.Callback.pvSample, szBuf, sizeof(szBuf));
760	pArgs->pfnPrintf(pArgs, "%-32s %s %s\n", pDesc->pszName, szBuf, STAMR3GetUnit(pDesc->enmUnit));
761	break;
762	}
763
764	case STAMTYPE_U8:
765	case STAMTYPE_U8_RESET:
766	if (pDesc->enmVisibility == STAMVISIBILITY_USED && *pDesc->u.pu8 == 0)
767	return VINF_SUCCESS;
768	pArgs->pfnPrintf(pArgs, "%-32s %8u %s\n", pDesc->pszName, *pDesc->u.pu8, STAMR3GetUnit(pDesc->enmUnit));
769	break;
770
771	case STAMTYPE_X8:
772	case STAMTYPE_X8_RESET:
773	if (pDesc->enmVisibility == STAMVISIBILITY_USED && *pDesc->u.pu8 == 0)
774	return VINF_SUCCESS;
775	pArgs->pfnPrintf(pArgs, "%-32s %8x %s\n", pDesc->pszName, *pDesc->u.pu8, STAMR3GetUnit(pDesc->enmUnit));
776	break;
777
778	case STAMTYPE_U16:
779	case STAMTYPE_U16_RESET:
780	if (pDesc->enmVisibility == STAMVISIBILITY_USED && *pDesc->u.pu16 == 0)
781	return VINF_SUCCESS;
782	pArgs->pfnPrintf(pArgs, "%-32s %8u %s\n", pDesc->pszName, *pDesc->u.pu16, STAMR3GetUnit(pDesc->enmUnit));
783	break;
784
785	case STAMTYPE_X16:
786	case STAMTYPE_X16_RESET:
787	if (pDesc->enmVisibility == STAMVISIBILITY_USED && *pDesc->u.pu16 == 0)
788	return VINF_SUCCESS;
789	pArgs->pfnPrintf(pArgs, "%-32s %8x %s\n", pDesc->pszName, *pDesc->u.pu16, STAMR3GetUnit(pDesc->enmUnit));
790	break;
791
792	case STAMTYPE_U32:
793	case STAMTYPE_U32_RESET:
794	if (pDesc->enmVisibility == STAMVISIBILITY_USED && *pDesc->u.pu32 == 0)
795	return VINF_SUCCESS;
796	pArgs->pfnPrintf(pArgs, "%-32s %8u %s\n", pDesc->pszName, *pDesc->u.pu32, STAMR3GetUnit(pDesc->enmUnit));
797	break;
798
799	case STAMTYPE_X32:
800	case STAMTYPE_X32_RESET:
801	if (pDesc->enmVisibility == STAMVISIBILITY_USED && *pDesc->u.pu32 == 0)
802	return VINF_SUCCESS;
803	pArgs->pfnPrintf(pArgs, "%-32s %8x %s\n", pDesc->pszName, *pDesc->u.pu32, STAMR3GetUnit(pDesc->enmUnit));
804	break;
805
806	case STAMTYPE_U64:
807	case STAMTYPE_U64_RESET:
808	if (pDesc->enmVisibility == STAMVISIBILITY_USED && *pDesc->u.pu64 == 0)
809	return VINF_SUCCESS;
810	pArgs->pfnPrintf(pArgs, "%-32s %8llu %s\n", pDesc->pszName, *pDesc->u.pu64, STAMR3GetUnit(pDesc->enmUnit));
811	break;
812
813	case STAMTYPE_X64:
814	case STAMTYPE_X64_RESET:
815	if (pDesc->enmVisibility == STAMVISIBILITY_USED && *pDesc->u.pu64 == 0)
816	return VINF_SUCCESS;
817	pArgs->pfnPrintf(pArgs, "%-32s %8llx %s\n", pDesc->pszName, *pDesc->u.pu64, STAMR3GetUnit(pDesc->enmUnit));
818	break;
819
820	default:
821	AssertMsgFailed(("enmType=%d\n", pDesc->enmType));
822	break;
823	}
824	NOREF(pvArg);
825	return VINF_SUCCESS;
826	}
827
828
829	/**
830	* Enumerate the statistics by the means of a callback function.
831	*
832	* @returns Whatever the callback returns.
833	*
834	* @param pVM The VM handle.
835	* @param pszPat The pattern to match samples.
836	* @param pfnEnum The callback function.
837	* @param pvUser The pvUser argument of the callback function.
838	*/
839	STAMR3DECL(int) STAMR3Enum(PVM pVM, const char pszPat, PFNSTAMR3ENUM pfnEnum, void pvUser)
840	{
841	STAMR3ENUMONEARGS Args;
842	Args.pVM = pVM;
843	Args.pfnEnum = pfnEnum;
844	Args.pvUser = pvUser;
845
846	STAM_LOCK_RD(pVM);
847	int rc = stamR3Enum(pVM, pszPat, stamR3EnumOne, &Args);
848	STAM_UNLOCK_RD(pVM);
849	return rc;
850	}
851
852
853	/**
854	* Callback function for STARTR3Enum().
855	*
856	* @returns whatever the callback returns.
857	* @param pDesc Pointer to the current descriptor.
858	* @param pvArg Points to a STAMR3ENUMONEARGS structure.
859	*/
860	static int stamR3EnumOne(PSTAMDESC pDesc, void *pvArg)
861	{
862	PSTAMR3ENUMONEARGS pArgs = (PSTAMR3ENUMONEARGS)pvArg;
863	int rc;
864	if (pDesc->enmType == STAMTYPE_CALLBACK)
865	{
866	/* Give the enumerator something useful. */
867	char szBuf[512];
868	pDesc->u.Callback.pfnPrint(pArgs->pVM, pDesc->u.Callback.pvSample, szBuf, sizeof(szBuf));
869	rc = pArgs->pfnEnum(pDesc->pszName, pDesc->enmType, szBuf, pDesc->enmUnit,
870	pDesc->enmVisibility, pDesc->pszDesc, pArgs->pvUser);
871	}
872	else
873	rc = pArgs->pfnEnum(pDesc->pszName, pDesc->enmType, pDesc->u.pv, pDesc->enmUnit,
874	pDesc->enmVisibility, pDesc->pszDesc, pArgs->pvUser);
875	return rc;
876	}
877
878
879	/**
880	* Matches a sample name against a pattern.
881	*
882	* @returns True if matches, false if not.
883	* @param pszPat Pattern.
884	* @param pszName Name to match against the pattern.
885	*/
886	static bool stamr3Match(const char pszPat, const char pszName)
887	{
888	if (!pszPat)
889	return true;
890
891	/* ASSUMES ASCII */
892	for (;;)
893	{
894	char chPat = *pszPat;
895	switch (chPat)
896	{
897	case '\0':
898	return !*pszName;
899
900	case '*':
901	{
902	while ((chPat = ++pszPat) == '' \|\| chPat == '?')
903	/* nothing */;
904
905	for (;;)
906	{
907	char ch = *pszName++;
908	if ( ch == chPat
909	&& ( !chPat
910	\|\| stamr3Match(pszPat + 1, pszName)))
911	return true;
912	if (!ch)
913	return false;
914	}
915	/* won't ever get here */
916	break;
917	}
918
919	case '?':
920	if (!*pszName)
921	return false;
922	break;
923
924	default:
925	if (*pszName != chPat)
926	return false;
927	break;
928	}
929	pszName++;
930	pszPat++;
931	}
932	return true;
933	}
934
935
936	/**
937	* Enumerates the nodes selected by a pattern or all nodes if no pattern
938	* is specified.
939	*
940	* The call must own at least a read lock to the STAM data.
941	*
942	* @returns The rc from the callback.
943	* @param pVM VM handle
944	* @param pszPat Pattern.
945	* @param pfnCallback Callback function which shall be called for matching nodes.
946	* If it returns anything but VINF_SUCCESS the enumeration is
947	* terminated and the status code returned to the caller.
948	* @param pvArg User parameter for the callback.
949	*/
950	static int stamR3Enum(PVM pVM, const char pszPat, int (pfnCallback)(PSTAMDESC pDesc, void pvArg), void pvArg)
951	{
952	/*
953	* Search for it.
954	*/
955	int rc = VINF_SUCCESS;
956	PSTAMDESC pCur = pVM->stam.s.pHead;
957	while (pCur)
958	{
959	if (stamr3Match(pszPat, pCur->pszName))
960	{
961	rc = pfnCallback(pCur, pvArg);
962	if (rc)
963	break;
964	}
965
966	/* next */
967	pCur = pCur->pNext;
968	}
969
970	return rc;
971	}
972
973
974	/**
975	* Get the unit string.
976	*
977	* @returns Pointer to read only unit string.
978	* @param enmUnit The unit.
979	*/
980	STAMR3DECL(const char *) STAMR3GetUnit(STAMUNIT enmUnit)
981	{
982	switch (enmUnit)
983	{
984	case STAMUNIT_NONE: return "";
985	case STAMUNIT_CALLS: return "calls";
986	case STAMUNIT_COUNT: return "count";
987	case STAMUNIT_BYTES: return "bytes";
988	case STAMUNIT_PAGES: return "pages";
989	case STAMUNIT_ERRORS: return "errors";
990	case STAMUNIT_OCCURENCES: return "times";
991	case STAMUNIT_TICKS_PER_CALL: return "ticks/call";
992	case STAMUNIT_TICKS_PER_OCCURENCE: return "ticks/time";
993	case STAMUNIT_GOOD_BAD: return "good:bad";
994	case STAMUNIT_MEGABYTES: return "megabytes";
995	case STAMUNIT_KILOBYTES: return "kilobytes";
996	case STAMUNIT_NS: return "ns";
997	case STAMUNIT_NS_PER_CALL: return "ns/call";
998	case STAMUNIT_NS_PER_OCCURENCE: return "ns/time";
999	case STAMUNIT_PCT: return "%";
1000
1001	default:
1002	AssertMsgFailed(("Unknown unit %d\n", enmUnit));
1003	return "(?unit?)";
1004	}
1005	}
1006
1007
1008	#ifdef VBOX_WITH_DEBUGGER
1009	/**
1010	* The '.stats' command.
1011	*
1012	* @returns VBox status.
1013	* @param pCmd Pointer to the command descriptor (as registered).
1014	* @param pCmdHlp Pointer to command helper functions.
1015	* @param pVM Pointer to the current VM (if any).
1016	* @param paArgs Pointer to (readonly) array of arguments.
1017	* @param cArgs Number of arguments in the array.
1018	*/
1019	static DECLCALLBACK(int) stamR3CmdStats(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult)
1020	{
1021	/*
1022	* Validate input.
1023	*/
1024	if (!pVM)
1025	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: The command requires VM to be selected.\n");
1026	if (!pVM->stam.s.pHead)
1027	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Sorry, no statistics present.\n");
1028
1029	/*
1030	* Do the printing.
1031	*/
1032	STAMR3PRINTONEARGS Args;
1033	Args.pVM = pVM;
1034	Args.pvArg = pCmdHlp;
1035	Args.pfnPrintf = stamR3EnumDbgfPrintf;
1036
1037	STAM_LOCK_RD(pVM);
1038	int rc = stamR3Enum(pVM, cArgs ? paArgs[0].u.pszString : NULL, stamR3PrintOne, &Args);
1039	STAM_UNLOCK_RD(pVM);
1040
1041	return rc;
1042	}
1043
1044
1045	/**
1046	* Display one sample in the debugger.
1047	*
1048	* @param pArgs Pointer to the print one argument structure.
1049	* @param pszFormat Format string.
1050	* @param ... Format arguments.
1051	*/
1052	static DECLCALLBACK(void) stamR3EnumDbgfPrintf(PSTAMR3PRINTONEARGS pArgs, const char *pszFormat, ...)
1053	{
1054	PDBGCCMDHLP pCmdHlp = (PDBGCCMDHLP)pArgs->pvArg;
1055
1056	va_list va;
1057	va_start(va, pszFormat);
1058	pCmdHlp->pfnPrintfV(pCmdHlp, NULL, pszFormat, va);
1059	va_end(va);
1060	NOREF(pArgs);
1061	}
1062
1063
1064	/**
1065	* The '.statsreset' command.
1066	*
1067	* @returns VBox status.
1068	* @param pCmd Pointer to the command descriptor (as registered).
1069	* @param pCmdHlp Pointer to command helper functions.
1070	* @param pVM Pointer to the current VM (if any).
1071	* @param paArgs Pointer to (readonly) array of arguments.
1072	* @param cArgs Number of arguments in the array.
1073	*/
1074	static DECLCALLBACK(int) stamR3CmdStatsReset(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PVM pVM, PCDBGCVAR paArgs, unsigned cArgs, PDBGCVAR pResult)
1075	{
1076	/*
1077	* Validate input.
1078	*/
1079	if (!pVM)
1080	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "error: The command requires VM to be selected.\n");
1081	if (!pVM->stam.s.pHead)
1082	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "Sorry, no statistics present.\n");
1083
1084	/*
1085	* Execute reset.
1086	*/
1087	int rc = STAMR3Reset(pVM, cArgs ? paArgs[0].u.pszString : NULL);
1088	if (VBOX_SUCCESS(rc))
1089	return pCmdHlp->pfnPrintf(pCmdHlp, NULL, "info: Statistics reset.\n");
1090
1091	return pCmdHlp->pfnVBoxError(pCmdHlp, rc, "Restting statistics.\n");
1092	}
1093	#endif
1094

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source: vbox/trunk/src/VBox/VMM/STAM.cpp@ 2244

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