TMInternal.h@ 31067

Last change on this file since 31067 was 30799, checked in by vboxsync, 14 years ago
TM: Made it possible to enable the resettable accounting stats in release builds (from the makefile).
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File size: 27.6 KB

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1	/* $Id: TMInternal.h 30799 2010-07-13 08:16:37Z vboxsync $ */
2	/** @file
3	* TM - Internal header file.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18	#ifndef ___TMInternal_h
19	#define ___TMInternal_h
20
21	#include <VBox/cdefs.h>
22	#include <VBox/types.h>
23	#include <iprt/time.h>
24	#include <iprt/timer.h>
25	#include <iprt/assert.h>
26	#include <VBox/stam.h>
27	#include <VBox/pdmcritsect.h>
28
29	RT_C_DECLS_BEGIN
30
31
32	/** @defgroup grp_tm_int Internal
33	* @ingroup grp_tm
34	* @internal
35	* @{
36	*/
37
38	/** Frequency of the real clock. */
39	#define TMCLOCK_FREQ_REAL UINT32_C(1000)
40	/** Frequency of the virtual clock. */
41	#define TMCLOCK_FREQ_VIRTUAL UINT32_C(1000000000)
42
43
44	/**
45	* Timer type.
46	*/
47	typedef enum TMTIMERTYPE
48	{
49	/** Device timer. */
50	TMTIMERTYPE_DEV = 1,
51	/** Driver timer. */
52	TMTIMERTYPE_DRV,
53	/** Internal timer . */
54	TMTIMERTYPE_INTERNAL,
55	/** External timer. */
56	TMTIMERTYPE_EXTERNAL
57	} TMTIMERTYPE;
58
59	/**
60	* Timer state
61	*/
62	typedef enum TMTIMERSTATE
63	{
64	/** Timer is stopped. */
65	TMTIMERSTATE_STOPPED = 1,
66	/** Timer is active. */
67	TMTIMERSTATE_ACTIVE,
68	/** Timer is expired, getting expire and unlinking. */
69	TMTIMERSTATE_EXPIRED_GET_UNLINK,
70	/** Timer is expired and is being delivered. */
71	TMTIMERSTATE_EXPIRED_DELIVER,
72
73	/** Timer is stopped but still in the active list.
74	* Currently in the ScheduleTimers list. */
75	TMTIMERSTATE_PENDING_STOP,
76	/** Timer is stopped but needs unlinking from the ScheduleTimers list.
77	* Currently in the ScheduleTimers list. */
78	TMTIMERSTATE_PENDING_STOP_SCHEDULE,
79	/** Timer is being modified and will soon be pending scheduling.
80	* Currently in the ScheduleTimers list. */
81	TMTIMERSTATE_PENDING_SCHEDULE_SET_EXPIRE,
82	/** Timer is pending scheduling.
83	* Currently in the ScheduleTimers list. */
84	TMTIMERSTATE_PENDING_SCHEDULE,
85	/** Timer is being modified and will soon be pending rescheduling.
86	* Currently in the ScheduleTimers list and the active list. */
87	TMTIMERSTATE_PENDING_RESCHEDULE_SET_EXPIRE,
88	/** Timer is modified and is now pending rescheduling.
89	* Currently in the ScheduleTimers list and the active list. */
90	TMTIMERSTATE_PENDING_RESCHEDULE,
91	/** Timer is being destroyed. */
92	TMTIMERSTATE_DESTROY,
93	/** Timer is free. */
94	TMTIMERSTATE_FREE
95	} TMTIMERSTATE;
96
97	/** Predicate that returns true if the give state is pending scheduling or
98	* rescheduling of any kind. Will reference the argument more than once! */
99	#define TMTIMERSTATE_IS_PENDING_SCHEDULING(enmState) \
100	( (enmState) <= TMTIMERSTATE_PENDING_RESCHEDULE \
101	&& (enmState) >= TMTIMERSTATE_PENDING_SCHEDULE_SET_EXPIRE)
102
103
104	/**
105	* Internal representation of a timer.
106	*
107	* For correct serialization (without the use of semaphores and
108	* other blocking/slow constructs) certain rules applies to updating
109	* this structure:
110	* - For thread other than EMT only u64Expire, enmState and pScheduleNext*
111	* are changeable. Everything else is out of bounds.
112	* - Updating of u64Expire timer can only happen in the TMTIMERSTATE_STOPPED
113	* and TMTIMERSTATE_PENDING_RESCHEDULING_SET_EXPIRE states.
114	* - Timers in the TMTIMERSTATE_EXPIRED state are only accessible from EMT.
115	* - Actual destruction of a timer can only be done at scheduling time.
116	*/
117	typedef struct TMTIMER
118	{
119	/** Expire time. */
120	volatile uint64_t u64Expire;
121	/** Clock to apply to u64Expire. */
122	TMCLOCK enmClock;
123	/** Timer callback type. */
124	TMTIMERTYPE enmType;
125	/** Type specific data. */
126	union
127	{
128	/** TMTIMERTYPE_DEV. */
129	struct
130	{
131	/** Callback. */
132	R3PTRTYPE(PFNTMTIMERDEV) pfnTimer;
133	/** Device instance. */
134	PPDMDEVINSR3 pDevIns;
135	} Dev;
136
137	/** TMTIMERTYPE_DRV. */
138	struct
139	{
140	/** Callback. */
141	R3PTRTYPE(PFNTMTIMERDRV) pfnTimer;
142	/** Device instance. */
143	R3PTRTYPE(PPDMDRVINS) pDrvIns;
144	} Drv;
145
146	/** TMTIMERTYPE_INTERNAL. */
147	struct
148	{
149	/** Callback. */
150	R3PTRTYPE(PFNTMTIMERINT) pfnTimer;
151	} Internal;
152
153	/** TMTIMERTYPE_EXTERNAL. */
154	struct
155	{
156	/** Callback. */
157	R3PTRTYPE(PFNTMTIMEREXT) pfnTimer;
158	} External;
159	} u;
160
161	/** Timer state. */
162	volatile TMTIMERSTATE enmState;
163	/** Timer relative offset to the next timer in the schedule list. */
164	int32_t volatile offScheduleNext;
165
166	/** Timer relative offset to the next timer in the chain. */
167	int32_t offNext;
168	/** Timer relative offset to the previous timer in the chain. */
169	int32_t offPrev;
170
171	/** User argument. */
172	RTR3PTR pvUser;
173	/** The critical section associated with the lock. */
174	R3PTRTYPE(PPDMCRITSECT) pCritSect;
175
176	/** Pointer to the next timer in the list of created or free timers. (TM::pTimers or TM::pFree) */
177	PTMTIMERR3 pBigNext;
178	/** Pointer to the previous timer in the list of all created timers. (TM::pTimers) */
179	PTMTIMERR3 pBigPrev;
180	/** Pointer to the timer description. */
181	R3PTRTYPE(const char *) pszDesc;
182	/** Pointer to the VM the timer belongs to - R3 Ptr. */
183	PVMR3 pVMR3;
184	/** Pointer to the VM the timer belongs to - R0 Ptr. */
185	PVMR0 pVMR0;
186	/** Pointer to the VM the timer belongs to - RC Ptr. */
187	PVMRC pVMRC;
188	#if HC_ARCH_BITS == 64
189	RTRCPTR padding0; /*< pad structure to multiple of 8 bytes. /
190	#endif
191	} TMTIMER;
192	AssertCompileMemberSize(TMTIMER, enmState, sizeof(uint32_t));
193
194
195	/**
196	* Updates a timer state in the correct atomic manner.
197	*/
198	#if 1
199	# define TM_SET_STATE(pTimer, state) \
200	ASMAtomicWriteU32((uint32_t volatile *)&(pTimer)->enmState, state)
201	#else
202	# define TM_SET_STATE(pTimer, state) \
203	do { \
204	uint32_t uOld1 = (pTimer)->enmState; \
205	Log(("%s: %p: %d -> %d\n", __FUNCTION__, (pTimer), (pTimer)->enmState, state)); \
206	uint32_t uOld2 = ASMAtomicXchgU32((uint32_t volatile *)&(pTimer)->enmState, state); \
207	Assert(uOld1 == uOld2); \
208	} while (0)
209	#endif
210
211	/**
212	* Tries to updates a timer state in the correct atomic manner.
213	*/
214	#if 1
215	# define TM_TRY_SET_STATE(pTimer, StateNew, StateOld, fRc) \
216	(fRc) = ASMAtomicCmpXchgU32((uint32_t volatile *)&(pTimer)->enmState, StateNew, StateOld)
217	#else
218	# define TM_TRY_SET_STATE(pTimer, StateNew, StateOld, fRc) \
219	do { (fRc) = ASMAtomicCmpXchgU32((uint32_t volatile *)&(pTimer)->enmState, StateNew, StateOld); \
220	Log(("%s: %p: %d -> %d %RTbool\n", __FUNCTION__, (pTimer), StateOld, StateNew, fRc)); \
221	} while (0)
222	#endif
223
224	/** Get the previous timer. */
225	#define TMTIMER_GET_PREV(pTimer) ((PTMTIMER)((pTimer)->offPrev ? (intptr_t)(pTimer) + (pTimer)->offPrev : 0))
226	/** Get the next timer. */
227	#define TMTIMER_GET_NEXT(pTimer) ((PTMTIMER)((pTimer)->offNext ? (intptr_t)(pTimer) + (pTimer)->offNext : 0))
228	/** Set the previous timer link. */
229	#define TMTIMER_SET_PREV(pTimer, pPrev) ((pTimer)->offPrev = (pPrev) ? (intptr_t)(pPrev) - (intptr_t)(pTimer) : 0)
230	/** Set the next timer link. */
231	#define TMTIMER_SET_NEXT(pTimer, pNext) ((pTimer)->offNext = (pNext) ? (intptr_t)(pNext) - (intptr_t)(pTimer) : 0)
232
233
234	/**
235	* A timer queue.
236	*
237	* This is allocated on the hyper heap.
238	*/
239	typedef struct TMTIMERQUEUE
240	{
241	/** The cached expire time for this queue.
242	* Updated by EMT when scheduling the queue or modifying the head timer.
243	* Assigned UINT64_MAX when there is no head timer. */
244	uint64_t u64Expire;
245	/** Doubly linked list of active timers.
246	*
247	* When no scheduling is pending, this list is will be ordered by expire time (ascending).
248	* Access is serialized by only letting the emulation thread (EMT) do changes.
249	*
250	* The offset is relative to the queue structure.
251	*/
252	int32_t offActive;
253	/** List of timers pending scheduling of some kind.
254	*
255	* Timer stats allowed in the list are TMTIMERSTATE_PENDING_STOPPING,
256	* TMTIMERSTATE_PENDING_DESTRUCTION, TMTIMERSTATE_PENDING_STOPPING_DESTRUCTION,
257	* TMTIMERSTATE_PENDING_RESCHEDULING and TMTIMERSTATE_PENDING_SCHEDULE.
258	*
259	* The offset is relative to the queue structure.
260	*/
261	int32_t volatile offSchedule;
262	/** The clock for this queue. */
263	TMCLOCK enmClock;
264	/** Pad the structure up to 32 bytes. */
265	uint32_t au32Padding[3];
266	} TMTIMERQUEUE;
267
268	/** Pointer to a timer queue. */
269	typedef TMTIMERQUEUE *PTMTIMERQUEUE;
270
271	/** Get the head of the active timer list. */
272	#define TMTIMER_GET_HEAD(pQueue) ((PTMTIMER)((pQueue)->offActive ? (intptr_t)(pQueue) + (pQueue)->offActive : 0))
273	/** Set the head of the active timer list. */
274	#define TMTIMER_SET_HEAD(pQueue, pHead) ((pQueue)->offActive = pHead ? (intptr_t)pHead - (intptr_t)(pQueue) : 0)
275
276
277	/**
278	* CPU load data set.
279	* Mainly used by tmR3CpuLoadTimer.
280	*/
281	typedef struct TMCPULOADSTATE
282	{
283	/** The percent of the period spent executing guest code. */
284	uint8_t cPctExecuting;
285	/** The percent of the period spent halted. */
286	uint8_t cPctHalted;
287	/** The percent of the period spent on other things. */
288	uint8_t cPctOther;
289	/** Explicit alignment padding */
290	uint8_t au8Alignment[5];
291
292	/** Previous cNsTotal value. */
293	uint64_t cNsPrevTotal;
294	/** Previous cNsExecuting value. */
295	uint64_t cNsPrevExecuting;
296	/** Previous cNsHalted value. */
297	uint64_t cNsPrevHalted;
298	} TMCPULOADSTATE;
299	AssertCompileSizeAlignment(TMCPULOADSTATE, 8);
300	AssertCompileMemberAlignment(TMCPULOADSTATE, cNsPrevTotal, 8);
301	/** Pointer to a CPU load data set. */
302	typedef TMCPULOADSTATE *PTMCPULOADSTATE;
303
304	/**
305	* Converts a TM pointer into a VM pointer.
306	* @returns Pointer to the VM structure the TM is part of.
307	* @param pTM Pointer to TM instance data.
308	*/
309	#define TM2VM(pTM) ( (PVM)((char*)pTM - pTM->offVM) )
310
311
312	/**
313	* TM VM Instance data.
314	* Changes to this must checked against the padding of the cfgm union in VM!
315	*/
316	typedef struct TM
317	{
318	/** Offset to the VM structure.
319	* See TM2VM(). */
320	RTUINT offVM;
321
322	/** Set if we fully virtualize the TSC, i.e. intercept all rdtsc instructions.
323	* Config variable: TSCVirtualized (bool) */
324	bool fTSCVirtualized;
325	/** Set if we use the real TSC as time source or if we use the virtual clock.
326	* If fTSCVirtualized is set we maintain a offset to the TSC and pausing/resuming the
327	* ticking. fTSCVirtualized = false implies fTSCUseRealTSC = true.
328	* Config variable: TSCUseRealTSC (bool) */
329	bool fTSCUseRealTSC;
330	/** Flag indicating that the host TSC is suitable for use in AMD-V and VT-x mode.
331	* Config variable: MaybeUseOffsettedHostTSC (boolean) */
332	bool fMaybeUseOffsettedHostTSC;
333	/** Whether the TSC is tied to the execution of code.
334	* Config variable: TSCTiedToExecution (bool) */
335	bool fTSCTiedToExecution;
336	/** Modifier for fTSCTiedToExecution which pauses the TSC while halting if true.
337	* Config variable: TSCNotTiedToHalt (bool) */
338	bool fTSCNotTiedToHalt;
339	bool afAlignment0[2]; /*< alignment padding /
340	/** The ID of the virtual CPU that normally runs the timers. */
341	VMCPUID idTimerCpu;
342	/** The number of CPU clock ticks per second (TMCLOCK_TSC).
343	* Config variable: TSCTicksPerSecond (64-bit unsigned int)
344	* The config variable implies fTSCVirtualized = true and fTSCUseRealTSC = false. */
345	uint64_t cTSCTicksPerSecond;
346
347	/** Virtual time ticking enabled indicator (counter for each VCPU). (TMCLOCK_VIRTUAL) */
348	uint32_t volatile cVirtualTicking;
349	/** Virtual time is not running at 100%. */
350	bool fVirtualWarpDrive;
351	/** Virtual timer synchronous time ticking enabled indicator (bool). (TMCLOCK_VIRTUAL_SYNC) */
352	bool volatile fVirtualSyncTicking;
353	/** Virtual timer synchronous time catch-up active. */
354	bool volatile fVirtualSyncCatchUp;
355	bool afAlignment1[5]; /*< alignment padding /
356	/** WarpDrive percentage.
357	* 100% is normal (fVirtualSyncNormal == true). When other than 100% we apply
358	* this percentage to the raw time source for the period it's been valid in,
359	* i.e. since u64VirtualWarpDriveStart. */
360	uint32_t u32VirtualWarpDrivePercentage;
361
362	/** The offset of the virtual clock relative to it's timesource.
363	* Only valid if fVirtualTicking is set. */
364	uint64_t u64VirtualOffset;
365	/** The guest virtual time when fVirtualTicking is cleared. */
366	uint64_t u64Virtual;
367	/** When the Warp drive was started or last adjusted.
368	* Only valid when fVirtualWarpDrive is set. */
369	uint64_t u64VirtualWarpDriveStart;
370	/** The previously returned nano TS.
371	* This handles TSC drift on SMP systems and expired interval.
372	* This is a valid range u64NanoTS to u64NanoTS + 1000000000 (ie. 1sec). */
373	uint64_t volatile u64VirtualRawPrev;
374	/** The ring-3 data structure for the RTTimeNanoTS workers used by tmVirtualGetRawNanoTS. */
375	RTTIMENANOTSDATAR3 VirtualGetRawDataR3;
376	/** The ring-0 data structure for the RTTimeNanoTS workers used by tmVirtualGetRawNanoTS. */
377	RTTIMENANOTSDATAR0 VirtualGetRawDataR0;
378	/** The ring-0 data structure for the RTTimeNanoTS workers used by tmVirtualGetRawNanoTS. */
379	RTTIMENANOTSDATARC VirtualGetRawDataRC;
380	/** Pointer to the ring-3 tmVirtualGetRawNanoTS worker function. */
381	R3PTRTYPE(PFNTIMENANOTSINTERNAL) pfnVirtualGetRawR3;
382	/** Pointer to the ring-3 tmVirtualGetRawNanoTS worker function. */
383	R0PTRTYPE(PFNTIMENANOTSINTERNAL) pfnVirtualGetRawR0;
384	/** Pointer to the ring-3 tmVirtualGetRawNanoTS worker function. */
385	RCPTRTYPE(PFNTIMENANOTSINTERNAL) pfnVirtualGetRawRC;
386	/** Alignment. */
387	RTRCPTR AlignmentRCPtr;
388	/** The guest virtual timer synchronous time when fVirtualSyncTicking is cleared. */
389	uint64_t volatile u64VirtualSync;
390	/** The offset of the timer synchronous virtual clock (TMCLOCK_VIRTUAL_SYNC) relative
391	* to the virtual clock (TMCLOCK_VIRTUAL).
392	* (This is accessed by the timer thread and must be updated atomically.) */
393	uint64_t volatile offVirtualSync;
394	/** The offset into offVirtualSync that's been irrevocably given up by failed catch-up attempts.
395	* Thus the current lag is offVirtualSync - offVirtualSyncGivenUp. */
396	uint64_t offVirtualSyncGivenUp;
397	/** The TMCLOCK_VIRTUAL at the previous TMVirtualGetSync call when catch-up is active. */
398	uint64_t volatile u64VirtualSyncCatchUpPrev;
399	/** The current catch-up percentage. */
400	uint32_t volatile u32VirtualSyncCatchUpPercentage;
401	/** How much slack when processing timers. */
402	uint32_t u32VirtualSyncScheduleSlack;
403	/** When to stop catch-up. */
404	uint64_t u64VirtualSyncCatchUpStopThreshold;
405	/** When to give up catch-up. */
406	uint64_t u64VirtualSyncCatchUpGiveUpThreshold;
407	/** @def TM_MAX_CATCHUP_PERIODS
408	* The number of catchup rates. */
409	#define TM_MAX_CATCHUP_PERIODS 10
410	/** The agressivness of the catch-up relative to how far we've lagged behind.
411	* The idea is to have increasing catch-up percentage as the lag increases. */
412	struct TMCATCHUPPERIOD
413	{
414	uint64_t u64Start; /*< When this period starts. (u64VirtualSyncOffset). /
415	uint32_t u32Percentage; /*< The catch-up percent to apply. /
416	uint32_t u32Alignment; /*< Structure alignment /
417	} aVirtualSyncCatchUpPeriods[TM_MAX_CATCHUP_PERIODS];
418
419	/** The UTC offset in ns.
420	* This is NOT for converting UTC to local time. It is for converting real
421	* world UTC time to VM UTC time. This feature is indented for doing date
422	* testing of software and similar.
423	* @todo Implement warpdrive on UTC. */
424	int64_t offUTC;
425
426	/** Timer queues for the different clock types - R3 Ptr */
427	R3PTRTYPE(PTMTIMERQUEUE) paTimerQueuesR3;
428	/** Timer queues for the different clock types - R0 Ptr */
429	R0PTRTYPE(PTMTIMERQUEUE) paTimerQueuesR0;
430	/** Timer queues for the different clock types - RC Ptr */
431	RCPTRTYPE(PTMTIMERQUEUE) paTimerQueuesRC;
432
433	/** Pointer to our RC mapping of the GIP. */
434	RCPTRTYPE(void *) pvGIPRC;
435	/** Pointer to our R3 mapping of the GIP. */
436	R3PTRTYPE(void *) pvGIPR3;
437
438	/** Pointer to a singly linked list of free timers.
439	* This chain is using the TMTIMER::pBigNext members.
440	* Only accessible from the emulation thread. */
441	PTMTIMERR3 pFree;
442
443	/** Pointer to a doubly linked list of created timers.
444	* This chain is using the TMTIMER::pBigNext and TMTIMER::pBigPrev members.
445	* Only accessible from the emulation thread. */
446	PTMTIMERR3 pCreated;
447
448	/** The schedulation timer timer handle (runtime timer).
449	* This timer will do freqent check on pending queue schedulations and
450	* raise VM_FF_TIMER to pull EMTs attention to them.
451	*/
452	R3PTRTYPE(PRTTIMER) pTimer;
453	/** Interval in milliseconds of the pTimer timer. */
454	uint32_t u32TimerMillies;
455
456	/** Indicates that queues are being run. */
457	bool volatile fRunningQueues;
458	/** Indicates that the virtual sync queue is being run. */
459	bool volatile fRunningVirtualSyncQueue;
460	/** Alignment */
461	bool afAlignment2[2];
462
463	/** Lock serializing access to the timer lists. */
464	PDMCRITSECT TimerCritSect;
465	/** Lock serializing access to the VirtualSync clock. */
466	PDMCRITSECT VirtualSyncLock;
467
468	/** CPU load state for all the virtual CPUs (tmR3CpuLoadTimer). */
469	TMCPULOADSTATE CpuLoad;
470
471	/** TMR3TimerQueuesDo
472	* @{ */
473	STAMPROFILE StatDoQueues;
474	STAMPROFILEADV aStatDoQueues[TMCLOCK_MAX];
475	/** @} */
476	/** tmSchedule
477	* @{ */
478	STAMPROFILE StatScheduleOneRZ;
479	STAMPROFILE StatScheduleOneR3;
480	STAMCOUNTER StatScheduleSetFF;
481	STAMCOUNTER StatPostponedR3;
482	STAMCOUNTER StatPostponedRZ;
483	/** @} */
484	/** Read the time
485	* @{ */
486	STAMCOUNTER StatVirtualGet;
487	STAMCOUNTER StatVirtualGetSetFF;
488	STAMCOUNTER StatVirtualSyncGet;
489	STAMCOUNTER StatVirtualSyncGetELoop;
490	STAMCOUNTER StatVirtualSyncGetExpired;
491	STAMCOUNTER StatVirtualSyncGetLockless;
492	STAMCOUNTER StatVirtualSyncGetLocked;
493	STAMCOUNTER StatVirtualSyncGetSetFF;
494	STAMCOUNTER StatVirtualPause;
495	STAMCOUNTER StatVirtualResume;
496	/* @} */
497	/** TMTimerPoll
498	* @{ */
499	STAMCOUNTER StatPoll;
500	STAMCOUNTER StatPollAlreadySet;
501	STAMCOUNTER StatPollELoop;
502	STAMCOUNTER StatPollMiss;
503	STAMCOUNTER StatPollRunning;
504	STAMCOUNTER StatPollSimple;
505	STAMCOUNTER StatPollVirtual;
506	STAMCOUNTER StatPollVirtualSync;
507	/** @} */
508	/** TMTimerSet
509	* @{ */
510	STAMCOUNTER StatTimerSet;
511	STAMCOUNTER StatTimerSetOpt;
512	STAMPROFILE StatTimerSetRZ;
513	STAMPROFILE StatTimerSetR3;
514	STAMCOUNTER StatTimerSetStStopped;
515	STAMCOUNTER StatTimerSetStExpDeliver;
516	STAMCOUNTER StatTimerSetStActive;
517	STAMCOUNTER StatTimerSetStPendStop;
518	STAMCOUNTER StatTimerSetStPendStopSched;
519	STAMCOUNTER StatTimerSetStPendSched;
520	STAMCOUNTER StatTimerSetStPendResched;
521	STAMCOUNTER StatTimerSetStOther;
522	/** @} */
523	/** TMTimerSetRelative
524	* @{ */
525	STAMCOUNTER StatTimerSetRelative;
526	STAMPROFILE StatTimerSetRelativeRZ;
527	STAMPROFILE StatTimerSetRelativeR3;
528	STAMCOUNTER StatTimerSetRelativeOpt;
529	STAMCOUNTER StatTimerSetRelativeRacyVirtSync;
530	STAMCOUNTER StatTimerSetRelativeStStopped;
531	STAMCOUNTER StatTimerSetRelativeStExpDeliver;
532	STAMCOUNTER StatTimerSetRelativeStActive;
533	STAMCOUNTER StatTimerSetRelativeStPendStop;
534	STAMCOUNTER StatTimerSetRelativeStPendStopSched;
535	STAMCOUNTER StatTimerSetRelativeStPendSched;
536	STAMCOUNTER StatTimerSetRelativeStPendResched;
537	STAMCOUNTER StatTimerSetRelativeStOther;
538	/** @} */
539	/** TMTimerStop
540	* @{ */
541	STAMPROFILE StatTimerStopRZ;
542	STAMPROFILE StatTimerStopR3;
543	/** @} */
544	/** VirtualSync - Running and Catching Up
545	* @{ */
546	STAMCOUNTER StatVirtualSyncRun;
547	STAMCOUNTER StatVirtualSyncRunRestart;
548	STAMPROFILE StatVirtualSyncRunSlack;
549	STAMCOUNTER StatVirtualSyncRunStop;
550	STAMCOUNTER StatVirtualSyncRunStoppedAlready;
551	STAMCOUNTER StatVirtualSyncGiveUp;
552	STAMCOUNTER StatVirtualSyncGiveUpBeforeStarting;
553	STAMPROFILEADV StatVirtualSyncCatchup;
554	STAMCOUNTER aStatVirtualSyncCatchupInitial[TM_MAX_CATCHUP_PERIODS];
555	STAMCOUNTER aStatVirtualSyncCatchupAdjust[TM_MAX_CATCHUP_PERIODS];
556	/** @} */
557	/** TMR3VirtualSyncFF (non dedicated EMT). */
558	STAMPROFILE StatVirtualSyncFF;
559	/** The timer callback. */
560	STAMCOUNTER StatTimerCallbackSetFF;
561
562	/** Calls to TMCpuTickSet. */
563	STAMCOUNTER StatTSCSet;
564
565	/** @name Reasons for refusing TSC offsetting in TMCpuTickCanUseRealTSC.
566	* @{ */
567	STAMCOUNTER StatTSCNotFixed;
568	STAMCOUNTER StatTSCNotTicking;
569	STAMCOUNTER StatTSCCatchupLE010;
570	STAMCOUNTER StatTSCCatchupLE025;
571	STAMCOUNTER StatTSCCatchupLE100;
572	STAMCOUNTER StatTSCCatchupOther;
573	STAMCOUNTER StatTSCWarp;
574	STAMCOUNTER StatTSCUnderflow;
575	STAMCOUNTER StatTSCSyncNotTicking;
576	/** @} */
577	} TM;
578	/** Pointer to TM VM instance data. */
579	typedef TM *PTM;
580
581	/**
582	* TM VMCPU Instance data.
583	* Changes to this must checked against the padding of the tm union in VM!
584	*/
585	typedef struct TMCPU
586	{
587	/** Offset to the VMCPU structure.
588	* See TMCPU2VM(). */
589	RTUINT offVMCPU;
590
591	/** CPU timestamp ticking enabled indicator (bool). (RDTSC) */
592	bool fTSCTicking;
593	bool afAlignment0[3]; /*< alignment padding /
594
595	/** The offset between the raw TSC source and the Guest TSC.
596	* Only valid if fTicking is set and and fTSCUseRealTSC is clear. */
597	uint64_t offTSCRawSrc;
598
599	/** The guest TSC when fTicking is cleared. */
600	uint64_t u64TSC;
601
602	/** The last seen TSC by the guest. */
603	uint64_t u64TSCLastSeen;
604
605	#ifndef VBOX_WITHOUT_NS_ACCOUNTING
606	/** The nanosecond timestamp of the CPU start or resume.
607	* This is recalculated when the VM is started so that
608	* cNsTotal = RTTimeNanoTS() - u64NsTsStartCpu. */
609	uint64_t u64NsTsStartTotal;
610	/** The nanosecond timestamp of the last start-execute notification. */
611	uint64_t u64NsTsStartExecuting;
612	/** The nanosecond timestamp of the last start-halt notification. */
613	uint64_t u64NsTsStartHalting;
614	/** The cNsXXX generation. */
615	uint32_t volatile uTimesGen;
616	/** Explicit alignment padding. */
617	uint32_t u32Alignment;
618	/** The number of nanoseconds total run time.
619	* @remarks This is updated when cNsExecuting and cNsHalted are updated. */
620	uint64_t cNsTotal;
621	/** The number of nanoseconds spent executing. */
622	uint64_t cNsExecuting;
623	/** The number of nanoseconds being halted. */
624	uint64_t cNsHalted;
625	/** The number of nanoseconds spent on other things.
626	* @remarks This is updated when cNsExecuting and cNsHalted are updated. */
627	uint64_t cNsOther;
628	/** The number of halts. */
629	uint64_t cPeriodsHalted;
630	/** The number of guest execution runs. */
631	uint64_t cPeriodsExecuting;
632	# if defined(VBOX_WITH_STATISTICS) \|\| defined(VBOX_WITH_NS_ACCOUNTING_STATS)
633	/** Resettable version of cNsTotal. */
634	STAMCOUNTER StatNsTotal;
635	/** Resettable version of cNsExecuting. */
636	STAMPROFILE StatNsExecuting;
637	/** Resettable version of cNsHalted. */
638	STAMPROFILE StatNsHalted;
639	/** Resettable version of cNsOther. */
640	STAMPROFILE StatNsOther;
641	# endif
642
643	/** CPU load state for this virtual CPU (tmR3CpuLoadTimer). */
644	TMCPULOADSTATE CpuLoad;
645	#endif
646	} TMCPU;
647	/** Pointer to TM VMCPU instance data. */
648	typedef TMCPU *PTMCPU;
649
650	#if 0 /* enable this to rule out locking bugs on single cpu guests. */
651	# define tmTimerLock(pVM) VINF_SUCCESS
652	# define tmTimerTryLock(pVM) VINF_SUCCESS
653	# define tmTimerUnlock(pVM) ((void)0)
654	# define tmVirtualSyncLock(pVM) VINF_SUCCESS
655	# define tmVirtualSyncTryLock(pVM) VINF_SUCCESS
656	# define tmVirtualSyncUnlock(pVM) ((void)0)
657	# define TM_ASSERT_LOCK(pVM) VM_ASSERT_EMT(pVM)
658	#else
659	int tmTimerLock(PVM pVM);
660	int tmTimerTryLock(PVM pVM);
661	void tmTimerUnlock(PVM pVM);
662	/** Checks that the caller owns the timer lock. */
663	#define TM_ASSERT_LOCK(pVM) Assert(PDMCritSectIsOwner(&pVM->tm.s.TimerCritSect))
664	int tmVirtualSyncLock(PVM pVM);
665	int tmVirtualSyncTryLock(PVM pVM);
666	void tmVirtualSyncUnlock(PVM pVM);
667	#endif
668
669	const char *tmTimerState(TMTIMERSTATE enmState);
670	void tmTimerQueueSchedule(PVM pVM, PTMTIMERQUEUE pQueue);
671	#ifdef VBOX_STRICT
672	void tmTimerQueuesSanityChecks(PVM pVM, const char *pszWhere);
673	#endif
674
675	int tmCpuTickPause(PVM pVM, PVMCPU pVCpu);
676	int tmCpuTickResume(PVM pVM, PVMCPU pVCpu);
677
678	int tmVirtualPauseLocked(PVM pVM);
679	int tmVirtualResumeLocked(PVM pVM);
680	DECLEXPORT(void) tmVirtualNanoTSBad(PRTTIMENANOTSDATA pData, uint64_t u64NanoTS, uint64_t u64DeltaPrev, uint64_t u64PrevNanoTS);
681	DECLEXPORT(uint64_t) tmVirtualNanoTSRediscover(PRTTIMENANOTSDATA pData);
682
683
684	/** @} */
685
686	RT_C_DECLS_END
687
688	#endif
689

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source: vbox/trunk/src/VBox/VMM/TMInternal.h@ 31067

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