TMInternal.h@ 19602

Last change on this file since 19602 was 19537, checked in by vboxsync, 16 years ago
TMR3TimerDestroy: rewrite to ring-3 only.
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File size: 21.4 KB

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1	/* $Id: TMInternal.h 19537 2009-05-08 18:09:57Z vboxsync $ */
2	/** @file
3	* TM - Internal header file.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
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	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18	* Clara, CA 95054 USA or visit http://www.sun.com if you need
19	* additional information or have any questions.
20	*/
21
22	#ifndef ___TMInternal_h
23	#define ___TMInternal_h
24
25	#include <VBox/cdefs.h>
26	#include <VBox/types.h>
27	#include <iprt/time.h>
28	#include <iprt/timer.h>
29	#include <iprt/assert.h>
30	#include <VBox/stam.h>
31	#include <VBox/pdmcritsect.h>
32
33	__BEGIN_DECLS
34
35
36	/** @defgroup grp_tm_int Internal
37	* @ingroup grp_tm
38	* @internal
39	* @{
40	*/
41
42	/** Frequency of the real clock. */
43	#define TMCLOCK_FREQ_REAL UINT32_C(1000)
44	/** Frequency of the virtual clock. */
45	#define TMCLOCK_FREQ_VIRTUAL UINT32_C(1000000000)
46
47
48	/**
49	* Timer type.
50	*/
51	typedef enum TMTIMERTYPE
52	{
53	/** Device timer. */
54	TMTIMERTYPE_DEV = 1,
55	/** Driver timer. */
56	TMTIMERTYPE_DRV,
57	/** Internal timer . */
58	TMTIMERTYPE_INTERNAL,
59	/** External timer. */
60	TMTIMERTYPE_EXTERNAL
61	} TMTIMERTYPE;
62
63	/**
64	* Timer state
65	*/
66	typedef enum TMTIMERSTATE
67	{
68	/** Timer is stopped. */
69	TMTIMERSTATE_STOPPED = 1,
70	/** Timer is active. */
71	TMTIMERSTATE_ACTIVE,
72	/** Timer is expired, is being delivered. */
73	TMTIMERSTATE_EXPIRED,
74
75	/** Timer is stopped but still in the active list.
76	* Currently in the ScheduleTimers list. */
77	TMTIMERSTATE_PENDING_STOP,
78	/** Timer is stopped but needs unlinking from the ScheduleTimers list.
79	* Currently in the ScheduleTimers list. */
80	TMTIMERSTATE_PENDING_STOP_SCHEDULE,
81	/** Timer is being modified and will soon be pending scheduling.
82	* Currently in the ScheduleTimers list. */
83	TMTIMERSTATE_PENDING_SCHEDULE_SET_EXPIRE,
84	/** Timer is pending scheduling.
85	* Currently in the ScheduleTimers list. */
86	TMTIMERSTATE_PENDING_SCHEDULE,
87	/** Timer is being modified and will soon be pending rescheduling.
88	* Currently in the ScheduleTimers list and the active list. */
89	TMTIMERSTATE_PENDING_RESCHEDULE_SET_EXPIRE,
90	/** Timer is modified and is now pending rescheduling.
91	* Currently in the ScheduleTimers list and the active list. */
92	TMTIMERSTATE_PENDING_RESCHEDULE,
93	/** Timer is being destroyed. */
94	TMTIMERSTATE_DESTROY,
95	/** Timer is free. */
96	TMTIMERSTATE_FREE
97	} TMTIMERSTATE;
98
99
100	/**
101	* Internal representation of a timer.
102	*
103	* For correct serialization (without the use of semaphores and
104	* other blocking/slow constructs) certain rules applies to updating
105	* this structure:
106	* - For thread other than EMT only u64Expire, enmState and pScheduleNext*
107	* are changeable. Everything else is out of bounds.
108	* - Updating of u64Expire timer can only happen in the TMTIMERSTATE_STOPPED
109	* and TMTIMERSTATE_PENDING_RESCHEDULING_SET_EXPIRE states.
110	* - Timers in the TMTIMERSTATE_EXPIRED state are only accessible from EMT.
111	* - Actual destruction of a timer can only be done at scheduling time.
112	*/
113	typedef struct TMTIMER
114	{
115	/** Expire time. */
116	volatile uint64_t u64Expire;
117	/** Clock to apply to u64Expire. */
118	TMCLOCK enmClock;
119	/** Timer callback type. */
120	TMTIMERTYPE enmType;
121	/** Type specific data. */
122	union
123	{
124	/** TMTIMERTYPE_DEV. */
125	struct
126	{
127	/** Callback. */
128	R3PTRTYPE(PFNTMTIMERDEV) pfnTimer;
129	/** Device instance. */
130	PPDMDEVINSR3 pDevIns;
131	} Dev;
132
133	/** TMTIMERTYPE_DRV. */
134	struct
135	{
136	/** Callback. */
137	R3PTRTYPE(PFNTMTIMERDRV) pfnTimer;
138	/** Device instance. */
139	R3PTRTYPE(PPDMDRVINS) pDrvIns;
140	} Drv;
141
142	/** TMTIMERTYPE_INTERNAL. */
143	struct
144	{
145	/** Callback. */
146	R3PTRTYPE(PFNTMTIMERINT) pfnTimer;
147	/** User argument. */
148	RTR3PTR pvUser;
149	} Internal;
150
151	/** TMTIMERTYPE_EXTERNAL. */
152	struct
153	{
154	/** Callback. */
155	R3PTRTYPE(PFNTMTIMEREXT) pfnTimer;
156	/** User data. */
157	RTR3PTR pvUser;
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	/** Pointer to the next timer in the list of created or free timers. (TM::pTimers or TM::pFree) */
172	PTMTIMERR3 pBigNext;
173	/** Pointer to the previous timer in the list of all created timers. (TM::pTimers) */
174	PTMTIMERR3 pBigPrev;
175	/** Pointer to the timer description. */
176	R3PTRTYPE(const char *) pszDesc;
177	/** Pointer to the VM the timer belongs to - R3 Ptr. */
178	PVMR3 pVMR3;
179	/** Pointer to the VM the timer belongs to - R0 Ptr. */
180	PVMR0 pVMR0;
181	/** Pointer to the VM the timer belongs to - RC Ptr. */
182	PVMRC pVMRC;
183	#if HC_ARCH_BITS == 64
184	RTRCPTR padding0; /*< pad structure to multiple of 8 bytes. /
185	#endif
186	} TMTIMER;
187	AssertCompileMemberSize(TMTIMER, enmState, sizeof(uint32_t));
188
189
190	/**
191	* Updates a timer state in the correct atomic manner.
192	*/
193	#if 1
194	# define TM_SET_STATE(pTimer, state) \
195	ASMAtomicWriteU32((uint32_t volatile *)&(pTimer)->enmState, state)
196	#else
197	# define TM_SET_STATE(pTimer, state) \
198	do { \
199	uint32_t uOld1 = (pTimer)->enmState; \
200	Log(("%s: %p: %d -> %d\n", __FUNCTION__, (pTimer), (pTimer)->enmState, state)); \
201	uint32_t uOld2 = ASMAtomicXchgU32((uint32_t volatile *)&(pTimer)->enmState, state); \
202	Assert(uOld1 == uOld2); \
203	} while (0)
204	#endif
205
206	/**
207	* Tries to updates a timer state in the correct atomic manner.
208	*/
209	#if 1
210	# define TM_TRY_SET_STATE(pTimer, StateNew, StateOld, fRc) \
211	(fRc) = ASMAtomicCmpXchgU32((uint32_t volatile *)&(pTimer)->enmState, StateNew, StateOld)
212	#else
213	# define TM_TRY_SET_STATE(pTimer, StateNew, StateOld, fRc) \
214	do { (fRc) = ASMAtomicCmpXchgU32((uint32_t volatile *)&(pTimer)->enmState, StateNew, StateOld); \
215	Log(("%s: %p: %d -> %d %RTbool\n", __FUNCTION__, (pTimer), StateOld, StateNew, fRc)); \
216	} while (0)
217	#endif
218
219	/** Get the previous timer. */
220	#define TMTIMER_GET_PREV(pTimer) ((PTMTIMER)((pTimer)->offPrev ? (intptr_t)(pTimer) + (pTimer)->offPrev : 0))
221	/** Get the next timer. */
222	#define TMTIMER_GET_NEXT(pTimer) ((PTMTIMER)((pTimer)->offNext ? (intptr_t)(pTimer) + (pTimer)->offNext : 0))
223	/** Set the previous timer link. */
224	#define TMTIMER_SET_PREV(pTimer, pPrev) ((pTimer)->offPrev = (pPrev) ? (intptr_t)(pPrev) - (intptr_t)(pTimer) : 0)
225	/** Set the next timer link. */
226	#define TMTIMER_SET_NEXT(pTimer, pNext) ((pTimer)->offNext = (pNext) ? (intptr_t)(pNext) - (intptr_t)(pTimer) : 0)
227
228
229	/**
230	* A timer queue.
231	*
232	* This is allocated on the hyper heap.
233	*/
234	typedef struct TMTIMERQUEUE
235	{
236	/** The cached expire time for this queue.
237	* Updated by EMT when scheduling the queue or modifying the head timer.
238	* Assigned UINT64_MAX when there is no head timer. */
239	uint64_t u64Expire;
240	/** Doubly linked list of active timers.
241	*
242	* When no scheduling is pending, this list is will be ordered by expire time (ascending).
243	* Access is serialized by only letting the emulation thread (EMT) do changes.
244	*
245	* The offset is relative to the queue structure.
246	*/
247	int32_t offActive;
248	/** List of timers pending scheduling of some kind.
249	*
250	* Timer stats allowed in the list are TMTIMERSTATE_PENDING_STOPPING,
251	* TMTIMERSTATE_PENDING_DESTRUCTION, TMTIMERSTATE_PENDING_STOPPING_DESTRUCTION,
252	* TMTIMERSTATE_PENDING_RESCHEDULING and TMTIMERSTATE_PENDING_SCHEDULE.
253	*
254	* The offset is relative to the queue structure.
255	*/
256	int32_t volatile offSchedule;
257	/** The clock for this queue. */
258	TMCLOCK enmClock;
259	/** Pad the structure up to 32 bytes. */
260	uint32_t au32Padding[3];
261	} TMTIMERQUEUE;
262
263	/** Pointer to a timer queue. */
264	typedef TMTIMERQUEUE *PTMTIMERQUEUE;
265
266	/** Get the head of the active timer list. */
267	#define TMTIMER_GET_HEAD(pQueue) ((PTMTIMER)((pQueue)->offActive ? (intptr_t)(pQueue) + (pQueue)->offActive : 0))
268	/** Set the head of the active timer list. */
269	#define TMTIMER_SET_HEAD(pQueue, pHead) ((pQueue)->offActive = pHead ? (intptr_t)pHead - (intptr_t)(pQueue) : 0)
270
271
272	/**
273	* Converts a TM pointer into a VM pointer.
274	* @returns Pointer to the VM structure the TM is part of.
275	* @param pTM Pointer to TM instance data.
276	*/
277	#define TM2VM(pTM) ( (PVM)((char*)pTM - pTM->offVM) )
278
279
280	/**
281	* TM VM Instance data.
282	* Changes to this must checked against the padding of the cfgm union in VM!
283	*/
284	typedef struct TM
285	{
286	/** Offset to the VM structure.
287	* See TM2VM(). */
288	RTUINT offVM;
289
290	/** Set if we fully virtualize the TSC, i.e. intercept all rdtsc instructions.
291	* Config variable: TSCVirtualized (bool) */
292	bool fTSCVirtualized;
293	/** Set if we use the real TSC as time source or if we use the virtual clock.
294	* If fTSCVirtualized is set we maintain a offset to the TSC and pausing/resuming the
295	* ticking. fTSCVirtualized = false implies fTSCUseRealTSC = true.
296	* Config variable: TSCUseRealTSC (bool) */
297	bool fTSCUseRealTSC;
298	/** Flag indicating that the host TSC is suitable for use in AMD-V and VT-x mode.
299	* Config variable: MaybeUseOffsettedHostTSC (boolean) */
300	bool fMaybeUseOffsettedHostTSC;
301	/** Whether the TSC is tied to the execution of code.
302	* Config variable: TSCTiedToExecution (bool) */
303	bool fTSCTiedToExecution;
304	/** Modifier for fTSCTiedToExecution which pauses the TSC while halting if true.
305	* Config variable: TSCNotTiedToHalt (bool) */
306	bool fTSCNotTiedToHalt;
307	bool afAlignment0[6]; /*< alignment padding /
308	/** The number of CPU clock ticks per second (TMCLOCK_TSC).
309	* Config variable: TSCTicksPerSecond (64-bit unsigned int)
310	* The config variable implies fTSCVirtualized = true and fTSCUseRealTSC = false. */
311	uint64_t cTSCTicksPerSecond;
312
313	/** Virtual time ticking enabled indicator (counter for each VCPU). (TMCLOCK_VIRTUAL) */
314	uint32_t volatile cVirtualTicking;
315	/** Virtual time is not running at 100%. */
316	bool fVirtualWarpDrive;
317	/** Virtual timer synchronous time ticking enabled indicator (bool). (TMCLOCK_VIRTUAL_SYNC) */
318	bool volatile fVirtualSyncTicking;
319	/** Virtual timer synchronous time catch-up active. */
320	bool volatile fVirtualSyncCatchUp;
321	bool afAlignment[5]; /*< alignment padding /
322	/** WarpDrive percentage.
323	* 100% is normal (fVirtualSyncNormal == true). When other than 100% we apply
324	* this percentage to the raw time source for the period it's been valid in,
325	* i.e. since u64VirtualWarpDriveStart. */
326	uint32_t u32VirtualWarpDrivePercentage;
327
328	/** The offset of the virtual clock relative to it's timesource.
329	* Only valid if fVirtualTicking is set. */
330	uint64_t u64VirtualOffset;
331	/** The guest virtual time when fVirtualTicking is cleared. */
332	uint64_t u64Virtual;
333	/** When the Warp drive was started or last adjusted.
334	* Only valid when fVirtualWarpDrive is set. */
335	uint64_t u64VirtualWarpDriveStart;
336	/** The previously returned nano TS.
337	* This handles TSC drift on SMP systems and expired interval.
338	* This is a valid range u64NanoTS to u64NanoTS + 1000000000 (ie. 1sec). */
339	uint64_t volatile u64VirtualRawPrev;
340	/** The ring-3 data structure for the RTTimeNanoTS workers used by tmVirtualGetRawNanoTS. */
341	RTTIMENANOTSDATAR3 VirtualGetRawDataR3;
342	/** The ring-0 data structure for the RTTimeNanoTS workers used by tmVirtualGetRawNanoTS. */
343	RTTIMENANOTSDATAR0 VirtualGetRawDataR0;
344	/** The ring-0 data structure for the RTTimeNanoTS workers used by tmVirtualGetRawNanoTS. */
345	RTTIMENANOTSDATARC VirtualGetRawDataRC;
346	/** Pointer to the ring-3 tmVirtualGetRawNanoTS worker function. */
347	R3PTRTYPE(PFNTIMENANOTSINTERNAL) pfnVirtualGetRawR3;
348	/** Pointer to the ring-3 tmVirtualGetRawNanoTS worker function. */
349	R0PTRTYPE(PFNTIMENANOTSINTERNAL) pfnVirtualGetRawR0;
350	/** Pointer to the ring-3 tmVirtualGetRawNanoTS worker function. */
351	RCPTRTYPE(PFNTIMENANOTSINTERNAL) pfnVirtualGetRawRC;
352	/** Alignment. */
353	RTRCPTR AlignmentRCPtr;
354	/** The guest virtual timer synchronous time when fVirtualSyncTicking is cleared. */
355	uint64_t volatile u64VirtualSync;
356	/** The offset of the timer synchronous virtual clock (TMCLOCK_VIRTUAL_SYNC) relative
357	* to the virtual clock (TMCLOCK_VIRTUAL).
358	* (This is accessed by the timer thread and must be updated atomically.) */
359	uint64_t volatile offVirtualSync;
360	/** The offset into offVirtualSync that's been irrevocably given up by failed catch-up attempts.
361	* Thus the current lag is offVirtualSync - offVirtualSyncGivenUp. */
362	uint64_t offVirtualSyncGivenUp;
363	/** The TMCLOCK_VIRTUAL at the previous TMVirtualGetSync call when catch-up is active. */
364	uint64_t volatile u64VirtualSyncCatchUpPrev;
365	/** The current catch-up percentage. */
366	uint32_t volatile u32VirtualSyncCatchUpPercentage;
367	/** How much slack when processing timers. */
368	uint32_t u32VirtualSyncScheduleSlack;
369	/** When to stop catch-up. */
370	uint64_t u64VirtualSyncCatchUpStopThreshold;
371	/** When to give up catch-up. */
372	uint64_t u64VirtualSyncCatchUpGiveUpThreshold;
373	/** @def TM_MAX_CATCHUP_PERIODS
374	* The number of catchup rates. */
375	#define TM_MAX_CATCHUP_PERIODS 10
376	/** The agressivness of the catch-up relative to how far we've lagged behind.
377	* The idea is to have increasing catch-up percentage as the lag increases. */
378	struct TMCATCHUPPERIOD
379	{
380	uint64_t u64Start; /*< When this period starts. (u64VirtualSyncOffset). /
381	uint32_t u32Percentage; /*< The catch-up percent to apply. /
382	uint32_t u32Alignment; /*< Structure alignment /
383	} aVirtualSyncCatchUpPeriods[TM_MAX_CATCHUP_PERIODS];
384
385	/** The UTC offset in ns.
386	* This is NOT for converting UTC to local time. It is for converting real
387	* world UTC time to VM UTC time. This feature is indented for doing date
388	* testing of software and similar.
389	* @todo Implement warpdrive on UTC. */
390	int64_t offUTC;
391
392	/** Timer queues for the different clock types - R3 Ptr */
393	R3PTRTYPE(PTMTIMERQUEUE) paTimerQueuesR3;
394	/** Timer queues for the different clock types - R0 Ptr */
395	R0PTRTYPE(PTMTIMERQUEUE) paTimerQueuesR0;
396	/** Timer queues for the different clock types - RC Ptr */
397	RCPTRTYPE(PTMTIMERQUEUE) paTimerQueuesRC;
398
399	/** Pointer to our RC mapping of the GIP. */
400	RCPTRTYPE(void *) pvGIPRC;
401	/** Pointer to our R3 mapping of the GIP. */
402	R3PTRTYPE(void *) pvGIPR3;
403
404	/** Pointer to a singly linked list of free timers.
405	* This chain is using the TMTIMER::pBigNext members.
406	* Only accessible from the emulation thread. */
407	PTMTIMERR3 pFree;
408
409	/** Pointer to a doubly linked list of created timers.
410	* This chain is using the TMTIMER::pBigNext and TMTIMER::pBigPrev members.
411	* Only accessible from the emulation thread. */
412	PTMTIMERR3 pCreated;
413
414	/** The schedulation timer timer handle (runtime timer).
415	* This timer will do freqent check on pending queue schedulations and
416	* raise VM_FF_TIMER to pull EMTs attention to them.
417	*/
418	R3PTRTYPE(PRTTIMER) pTimer;
419	/** Interval in milliseconds of the pTimer timer. */
420	uint32_t u32TimerMillies;
421
422	/** Makes sure only one EMT is running the queues. */
423	bool volatile fRunningQueues;
424
425	/** Lock serializing EMT access to TM. */
426	PDMCRITSECT EmtLock;
427
428	/** TMR3TimerQueuesDo
429	* @{ */
430	STAMPROFILE StatDoQueues;
431	STAMPROFILEADV StatDoQueuesSchedule;
432	STAMPROFILEADV StatDoQueuesRun;
433	/** @} */
434	/** tmSchedule
435	* @{ */
436	STAMPROFILE StatScheduleOneRZ;
437	STAMPROFILE StatScheduleOneR3;
438	STAMCOUNTER StatScheduleSetFF;
439	STAMCOUNTER StatPostponedR3;
440	STAMCOUNTER StatPostponedRZ;
441	/** @} */
442	/** Read the time
443	* @{ */
444	STAMCOUNTER StatVirtualGet;
445	STAMCOUNTER StatVirtualGetSetFF;
446	STAMCOUNTER StatVirtualGetSync;
447	STAMCOUNTER StatVirtualGetSyncSetFF;
448	STAMCOUNTER StatVirtualPause;
449	STAMCOUNTER StatVirtualResume;
450	/* @} */
451	/** TMTimerPoll
452	* @{ */
453	STAMCOUNTER StatPollAlreadySet;
454	STAMCOUNTER StatPollVirtual;
455	STAMCOUNTER StatPollVirtualSync;
456	STAMCOUNTER StatPollMiss;
457	/** @} */
458	/** TMTimerSet
459	* @{ */
460	STAMPROFILE StatTimerSetRZ;
461	STAMPROFILE StatTimerSetR3;
462	/** @} */
463	/** TMTimerStop
464	* @{ */
465	STAMPROFILE StatTimerStopRZ;
466	STAMPROFILE StatTimerStopR3;
467	/** @} */
468	/** VirtualSync - Running and Catching Up
469	* @{ */
470	STAMCOUNTER StatVirtualSyncRun;
471	STAMCOUNTER StatVirtualSyncRunRestart;
472	STAMPROFILE StatVirtualSyncRunSlack;
473	STAMCOUNTER StatVirtualSyncRunStop;
474	STAMCOUNTER StatVirtualSyncRunStoppedAlready;
475	STAMCOUNTER StatVirtualSyncGiveUp;
476	STAMCOUNTER StatVirtualSyncGiveUpBeforeStarting;
477	STAMPROFILEADV StatVirtualSyncCatchup;
478	STAMCOUNTER aStatVirtualSyncCatchupInitial[TM_MAX_CATCHUP_PERIODS];
479	STAMCOUNTER aStatVirtualSyncCatchupAdjust[TM_MAX_CATCHUP_PERIODS];
480	/** @} */
481	/** The timer callback. */
482	STAMCOUNTER StatTimerCallbackSetFF;
483
484	/** @name Reasons for refusing TSC offsetting in TMCpuTickCanUseRealTSC.
485	* @{ */
486	STAMCOUNTER StatTSCNotFixed;
487	STAMCOUNTER StatTSCNotTicking;
488	STAMCOUNTER StatTSCCatchupLE010;
489	STAMCOUNTER StatTSCCatchupLE025;
490	STAMCOUNTER StatTSCCatchupLE100;
491	STAMCOUNTER StatTSCCatchupOther;
492	STAMCOUNTER StatTSCWarp;
493	STAMCOUNTER StatTSCSyncNotTicking;
494	/** @} */
495	} TM;
496	/** Pointer to TM VM instance data. */
497	typedef TM *PTM;
498
499	/**
500	* TM VMCPU Instance data.
501	* Changes to this must checked against the padding of the tm union in VM!
502	*/
503	typedef struct TMCPU
504	{
505	/** Offset to the VMCPU structure.
506	* See TMCPU2VM(). */
507	RTUINT offVMCPU;
508
509	/** CPU timestamp ticking enabled indicator (bool). (RDTSC) */
510	bool fTSCTicking;
511	bool afAlignment0[3]; /*< alignment padding /
512
513	/** The offset between the host TSC and the Guest TSC.
514	* Only valid if fTicking is set and and fTSCUseRealTSC is clear. */
515	uint64_t u64TSCOffset;
516
517	/** The guest TSC when fTicking is cleared. */
518	uint64_t u64TSC;
519
520	} TMCPU;
521	/** Pointer to TM VMCPU instance data. */
522	typedef TMCPU *PTMCPU;
523
524	#if 0 /* enable this to rule out locking bugs on single cpu guests. */
525	# define tmLock(pVM) VINF_SUCCESS
526	# define tmTryLock(pVM) VINF_SUCCESS
527	# define tmUnlock(pVM) ((void)0)
528	# define TM_ASSERT_EMT_LOCK(pVM) VM_ASSERT_EMT(pVM)
529	#else
530	int tmLock(PVM pVM);
531	int tmTryLock(PVM pVM);
532	void tmUnlock(PVM pVM);
533	/** Checks that the caller owns the EMT lock. */
534	#define TM_ASSERT_EMT_LOCK(pVM) Assert(PDMCritSectIsOwner(&pVM->tm.s.EmtLock))
535	#endif
536
537	const char *tmTimerState(TMTIMERSTATE enmState);
538	void tmTimerQueueSchedule(PVM pVM, PTMTIMERQUEUE pQueue);
539	#ifdef VBOX_STRICT
540	void tmTimerQueuesSanityChecks(PVM pVM, const char *pszWhere);
541	#endif
542
543	int tmCpuTickPause(PVM pVM, PVMCPU pVCpu);
544	int tmCpuTickResume(PVM pVM, PVMCPU pVCpu);
545
546	DECLEXPORT(void) tmVirtualNanoTSBad(PRTTIMENANOTSDATA pData, uint64_t u64NanoTS, uint64_t u64DeltaPrev, uint64_t u64PrevNanoTS);
547	DECLEXPORT(uint64_t) tmVirtualNanoTSRediscover(PRTTIMENANOTSDATA pData);
548
549
550	/** @} */
551
552	__END_DECLS
553
554	#endif
555

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source: vbox/trunk/src/VBox/VMM/TMInternal.h@ 19602

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