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/* $Id: TMInternal.h 35346 2010-12-27 16:13:13Z vboxsync $ */
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* TM - Internal header file.
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* Copyright (C) 2006-2007 Oracle Corporation
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* This file is part of VirtualBox Open Source Edition (OSE), as
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* available from http://www.virtualbox.org. This file is free software;
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* you can redistribute it and/or modify it under the terms of the GNU
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* General Public License (GPL) as published by the Free Software
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* Foundation, in version 2 as it comes in the "COPYING" file of the
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* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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#ifndef ___TMInternal_h
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#define ___TMInternal_h
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#include <VBox/cdefs.h>
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#include <VBox/types.h>
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#include <iprt/time.h>
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#include <iprt/timer.h>
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#include <iprt/assert.h>
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#include <VBox/vmm/stam.h>
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#include <VBox/vmm/pdmcritsect.h>
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/** @defgroup grp_tm_int Internal
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/** Frequency of the real clock. */
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#define TMCLOCK_FREQ_REAL UINT32_C(1000)
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/** Frequency of the virtual clock. */
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#define TMCLOCK_FREQ_VIRTUAL UINT32_C(1000000000)
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typedef enum TMTIMERTYPE
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/** Internal timer . */
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/** External timer. */
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typedef enum TMTIMERSTATE
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/** Timer is stopped. */
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TMTIMERSTATE_STOPPED = 1,
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/** Timer is active. */
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/** Timer is expired, getting expire and unlinking. */
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TMTIMERSTATE_EXPIRED_GET_UNLINK,
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/** Timer is expired and is being delivered. */
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TMTIMERSTATE_EXPIRED_DELIVER,
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/** Timer is stopped but still in the active list.
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* Currently in the ScheduleTimers list. */
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TMTIMERSTATE_PENDING_STOP,
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/** Timer is stopped but needs unlinking from the ScheduleTimers list.
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* Currently in the ScheduleTimers list. */
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TMTIMERSTATE_PENDING_STOP_SCHEDULE,
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/** Timer is being modified and will soon be pending scheduling.
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* Currently in the ScheduleTimers list. */
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TMTIMERSTATE_PENDING_SCHEDULE_SET_EXPIRE,
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/** Timer is pending scheduling.
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* Currently in the ScheduleTimers list. */
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TMTIMERSTATE_PENDING_SCHEDULE,
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/** Timer is being modified and will soon be pending rescheduling.
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* Currently in the ScheduleTimers list and the active list. */
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TMTIMERSTATE_PENDING_RESCHEDULE_SET_EXPIRE,
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/** Timer is modified and is now pending rescheduling.
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* Currently in the ScheduleTimers list and the active list. */
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TMTIMERSTATE_PENDING_RESCHEDULE,
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/** Timer is being destroyed. */
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/** Predicate that returns true if the give state is pending scheduling or
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* rescheduling of any kind. Will reference the argument more than once! */
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#define TMTIMERSTATE_IS_PENDING_SCHEDULING(enmState) \
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( (enmState) <= TMTIMERSTATE_PENDING_RESCHEDULE \
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&& (enmState) >= TMTIMERSTATE_PENDING_SCHEDULE_SET_EXPIRE)
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* Internal representation of a timer.
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* For correct serialization (without the use of semaphores and
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* other blocking/slow constructs) certain rules applies to updating
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* - For thread other than EMT only u64Expire, enmState and pScheduleNext*
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* are changeable. Everything else is out of bounds.
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* - Updating of u64Expire timer can only happen in the TMTIMERSTATE_STOPPED
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* and TMTIMERSTATE_PENDING_RESCHEDULING_SET_EXPIRE states.
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* - Timers in the TMTIMERSTATE_EXPIRED state are only accessible from EMT.
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* - Actual destruction of a timer can only be done at scheduling time.
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typedef struct TMTIMER
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volatile uint64_t u64Expire;
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/** Clock to apply to u64Expire. */
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/** Timer callback type. */
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/** Type specific data. */
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/** TMTIMERTYPE_DEV. */
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R3PTRTYPE(PFNTMTIMERDEV) pfnTimer;
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/** Device instance. */
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PPDMDEVINSR3 pDevIns;
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/** TMTIMERTYPE_DRV. */
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R3PTRTYPE(PFNTMTIMERDRV) pfnTimer;
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/** Device instance. */
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R3PTRTYPE(PPDMDRVINS) pDrvIns;
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/** TMTIMERTYPE_INTERNAL. */
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R3PTRTYPE(PFNTMTIMERINT) pfnTimer;
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/** TMTIMERTYPE_EXTERNAL. */
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R3PTRTYPE(PFNTMTIMEREXT) pfnTimer;
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volatile TMTIMERSTATE enmState;
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/** Timer relative offset to the next timer in the schedule list. */
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int32_t volatile offScheduleNext;
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/** Timer relative offset to the next timer in the chain. */
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/** Timer relative offset to the previous timer in the chain. */
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/** Pointer to the VM the timer belongs to - R3 Ptr. */
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/** Pointer to the VM the timer belongs to - R0 Ptr. */
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/** Pointer to the VM the timer belongs to - RC Ptr. */
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/** The timer frequency hint. This is 0 if not hint was given. */
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uint32_t volatile uHzHint;
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/** User argument. */
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/** The critical section associated with the lock. */
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R3PTRTYPE(PPDMCRITSECT) pCritSect;
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/** Pointer to the next timer in the list of created or free timers. (TM::pTimers or TM::pFree) */
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/** Pointer to the previous timer in the list of all created timers. (TM::pTimers) */
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/** Pointer to the timer description. */
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R3PTRTYPE(const char *) pszDesc;
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#if HC_ARCH_BITS == 32
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uint32_t padding0; /**< pad structure to multiple of 8 bytes. */
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AssertCompileMemberSize(TMTIMER, enmState, sizeof(uint32_t));
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* Updates a timer state in the correct atomic manner.
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# define TM_SET_STATE(pTimer, state) \
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ASMAtomicWriteU32((uint32_t volatile *)&(pTimer)->enmState, state)
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# define TM_SET_STATE(pTimer, state) \
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uint32_t uOld1 = (pTimer)->enmState; \
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Log(("%s: %p: %d -> %d\n", __FUNCTION__, (pTimer), (pTimer)->enmState, state)); \
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uint32_t uOld2 = ASMAtomicXchgU32((uint32_t volatile *)&(pTimer)->enmState, state); \
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Assert(uOld1 == uOld2); \
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* Tries to updates a timer state in the correct atomic manner.
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# define TM_TRY_SET_STATE(pTimer, StateNew, StateOld, fRc) \
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(fRc) = ASMAtomicCmpXchgU32((uint32_t volatile *)&(pTimer)->enmState, StateNew, StateOld)
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# define TM_TRY_SET_STATE(pTimer, StateNew, StateOld, fRc) \
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do { (fRc) = ASMAtomicCmpXchgU32((uint32_t volatile *)&(pTimer)->enmState, StateNew, StateOld); \
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Log(("%s: %p: %d -> %d %RTbool\n", __FUNCTION__, (pTimer), StateOld, StateNew, fRc)); \
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/** Get the previous timer. */
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#define TMTIMER_GET_PREV(pTimer) ((PTMTIMER)((pTimer)->offPrev ? (intptr_t)(pTimer) + (pTimer)->offPrev : 0))
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/** Get the next timer. */
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#define TMTIMER_GET_NEXT(pTimer) ((PTMTIMER)((pTimer)->offNext ? (intptr_t)(pTimer) + (pTimer)->offNext : 0))
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/** Set the previous timer link. */
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#define TMTIMER_SET_PREV(pTimer, pPrev) ((pTimer)->offPrev = (pPrev) ? (intptr_t)(pPrev) - (intptr_t)(pTimer) : 0)
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/** Set the next timer link. */
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#define TMTIMER_SET_NEXT(pTimer, pNext) ((pTimer)->offNext = (pNext) ? (intptr_t)(pNext) - (intptr_t)(pTimer) : 0)
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* This is allocated on the hyper heap.
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typedef struct TMTIMERQUEUE
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/** The cached expire time for this queue.
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* Updated by EMT when scheduling the queue or modifying the head timer.
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* Assigned UINT64_MAX when there is no head timer. */
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/** Doubly linked list of active timers.
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* When no scheduling is pending, this list is will be ordered by expire time (ascending).
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* Access is serialized by only letting the emulation thread (EMT) do changes.
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* The offset is relative to the queue structure.
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/** List of timers pending scheduling of some kind.
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* Timer stats allowed in the list are TMTIMERSTATE_PENDING_STOPPING,
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* TMTIMERSTATE_PENDING_DESTRUCTION, TMTIMERSTATE_PENDING_STOPPING_DESTRUCTION,
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* TMTIMERSTATE_PENDING_RESCHEDULING and TMTIMERSTATE_PENDING_SCHEDULE.
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* The offset is relative to the queue structure.
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int32_t volatile offSchedule;
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/** The clock for this queue. */
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/** Pad the structure up to 32 bytes. */
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uint32_t au32Padding[3];
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/** Pointer to a timer queue. */
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typedef TMTIMERQUEUE *PTMTIMERQUEUE;
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/** Get the head of the active timer list. */
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#define TMTIMER_GET_HEAD(pQueue) ((PTMTIMER)((pQueue)->offActive ? (intptr_t)(pQueue) + (pQueue)->offActive : 0))
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/** Set the head of the active timer list. */
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#define TMTIMER_SET_HEAD(pQueue, pHead) ((pQueue)->offActive = pHead ? (intptr_t)pHead - (intptr_t)(pQueue) : 0)
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* Mainly used by tmR3CpuLoadTimer.
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typedef struct TMCPULOADSTATE
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/** The percent of the period spent executing guest code. */
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uint8_t cPctExecuting;
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/** The percent of the period spent halted. */
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/** The percent of the period spent on other things. */
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/** Explicit alignment padding */
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uint8_t au8Alignment[5];
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/** Previous cNsTotal value. */
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uint64_t cNsPrevTotal;
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/** Previous cNsExecuting value. */
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uint64_t cNsPrevExecuting;
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/** Previous cNsHalted value. */
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uint64_t cNsPrevHalted;
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AssertCompileSizeAlignment(TMCPULOADSTATE, 8);
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AssertCompileMemberAlignment(TMCPULOADSTATE, cNsPrevTotal, 8);
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/** Pointer to a CPU load data set. */
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typedef TMCPULOADSTATE *PTMCPULOADSTATE;
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* Converts a TM pointer into a VM pointer.
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* @returns Pointer to the VM structure the TM is part of.
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* @param pTM Pointer to TM instance data.
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#define TM2VM(pTM) ( (PVM)((char*)pTM - pTM->offVM) )
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* TM VM Instance data.
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* Changes to this must checked against the padding of the cfgm union in VM!
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/** Offset to the VM structure.
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/** Set if we fully virtualize the TSC, i.e. intercept all rdtsc instructions.
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* Config variable: TSCVirtualized (bool) */
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bool fTSCVirtualized;
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/** Set if we use the real TSC as time source or if we use the virtual clock.
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* If fTSCVirtualized is set we maintain a offset to the TSC and pausing/resuming the
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* ticking. fTSCVirtualized = false implies fTSCUseRealTSC = true.
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* Config variable: TSCUseRealTSC (bool) */
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/** Flag indicating that the host TSC is suitable for use in AMD-V and VT-x mode.
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* Config variable: MaybeUseOffsettedHostTSC (boolean) */
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bool fMaybeUseOffsettedHostTSC;
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/** Whether the TSC is tied to the execution of code.
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* Config variable: TSCTiedToExecution (bool) */
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bool fTSCTiedToExecution;
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/** Modifier for fTSCTiedToExecution which pauses the TSC while halting if true.
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* Config variable: TSCNotTiedToHalt (bool) */
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bool fTSCNotTiedToHalt;
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bool afAlignment0[2]; /**< alignment padding */
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/** The ID of the virtual CPU that normally runs the timers. */
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/** The number of CPU clock ticks per second (TMCLOCK_TSC).
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* Config variable: TSCTicksPerSecond (64-bit unsigned int)
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* The config variable implies fTSCVirtualized = true and fTSCUseRealTSC = false. */
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uint64_t cTSCTicksPerSecond;
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/** Virtual time ticking enabled indicator (counter for each VCPU). (TMCLOCK_VIRTUAL) */
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uint32_t volatile cVirtualTicking;
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/** Virtual time is not running at 100%. */
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bool fVirtualWarpDrive;
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/** Virtual timer synchronous time ticking enabled indicator (bool). (TMCLOCK_VIRTUAL_SYNC) */
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bool volatile fVirtualSyncTicking;
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/** Virtual timer synchronous time catch-up active. */
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bool volatile fVirtualSyncCatchUp;
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bool afAlignment1[5]; /**< alignment padding */
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/** WarpDrive percentage.
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* 100% is normal (fVirtualSyncNormal == true). When other than 100% we apply
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* this percentage to the raw time source for the period it's been valid in,
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* i.e. since u64VirtualWarpDriveStart. */
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uint32_t u32VirtualWarpDrivePercentage;
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/** The offset of the virtual clock relative to it's timesource.
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* Only valid if fVirtualTicking is set. */
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uint64_t u64VirtualOffset;
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/** The guest virtual time when fVirtualTicking is cleared. */
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/** When the Warp drive was started or last adjusted.
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* Only valid when fVirtualWarpDrive is set. */
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uint64_t u64VirtualWarpDriveStart;
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/** The previously returned nano TS.
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* This handles TSC drift on SMP systems and expired interval.
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* This is a valid range u64NanoTS to u64NanoTS + 1000000000 (ie. 1sec). */
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uint64_t volatile u64VirtualRawPrev;
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/** The ring-3 data structure for the RTTimeNanoTS workers used by tmVirtualGetRawNanoTS. */
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RTTIMENANOTSDATAR3 VirtualGetRawDataR3;
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/** The ring-0 data structure for the RTTimeNanoTS workers used by tmVirtualGetRawNanoTS. */
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RTTIMENANOTSDATAR0 VirtualGetRawDataR0;
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/** The ring-0 data structure for the RTTimeNanoTS workers used by tmVirtualGetRawNanoTS. */
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RTTIMENANOTSDATARC VirtualGetRawDataRC;
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/** Pointer to the ring-3 tmVirtualGetRawNanoTS worker function. */
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R3PTRTYPE(PFNTIMENANOTSINTERNAL) pfnVirtualGetRawR3;
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/** Pointer to the ring-3 tmVirtualGetRawNanoTS worker function. */
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R0PTRTYPE(PFNTIMENANOTSINTERNAL) pfnVirtualGetRawR0;
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/** Pointer to the ring-3 tmVirtualGetRawNanoTS worker function. */
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RCPTRTYPE(PFNTIMENANOTSINTERNAL) pfnVirtualGetRawRC;
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RTRCPTR AlignmentRCPtr;
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/** The guest virtual timer synchronous time when fVirtualSyncTicking is cleared. */
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uint64_t volatile u64VirtualSync;
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/** The offset of the timer synchronous virtual clock (TMCLOCK_VIRTUAL_SYNC) relative
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* to the virtual clock (TMCLOCK_VIRTUAL).
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* (This is accessed by the timer thread and must be updated atomically.) */
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uint64_t volatile offVirtualSync;
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/** The offset into offVirtualSync that's been irrevocably given up by failed catch-up attempts.
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* Thus the current lag is offVirtualSync - offVirtualSyncGivenUp. */
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uint64_t offVirtualSyncGivenUp;
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/** The TMCLOCK_VIRTUAL at the previous TMVirtualGetSync call when catch-up is active. */
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uint64_t volatile u64VirtualSyncCatchUpPrev;
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/** The current catch-up percentage. */
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uint32_t volatile u32VirtualSyncCatchUpPercentage;
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/** How much slack when processing timers. */
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uint32_t u32VirtualSyncScheduleSlack;
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/** When to stop catch-up. */
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uint64_t u64VirtualSyncCatchUpStopThreshold;
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/** When to give up catch-up. */
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uint64_t u64VirtualSyncCatchUpGiveUpThreshold;
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/** @def TM_MAX_CATCHUP_PERIODS
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* The number of catchup rates. */
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#define TM_MAX_CATCHUP_PERIODS 10
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/** The aggressiveness of the catch-up relative to how far we've lagged behind.
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* The idea is to have increasing catch-up percentage as the lag increases. */
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struct TMCATCHUPPERIOD
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uint64_t u64Start; /**< When this period starts. (u64VirtualSyncOffset). */
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uint32_t u32Percentage; /**< The catch-up percent to apply. */
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uint32_t u32Alignment; /**< Structure alignment */
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} aVirtualSyncCatchUpPeriods[TM_MAX_CATCHUP_PERIODS];
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/** The current max timer Hz hint. */
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uint32_t volatile uMaxHzHint;
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/** Whether to recalulate the HzHint next time its queried. */
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bool volatile fHzHintNeedsUpdating;
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bool afAlignment2[3];
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/** @cfgm{TM/HostHzMax, uint32_t, Hz, 0, UINT32_MAX, 20000}
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* The max host Hz frequency hint returned by TMCalcHostTimerFrequency. */
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/** @cfgm{TM/HostHzFudgeFactorTimerCpu, uint32_t, Hz, 0, UINT32_MAX, 111}
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* The number of Hz TMCalcHostTimerFrequency adds for the timer CPU. */
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uint32_t cPctHostHzFudgeFactorTimerCpu;
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/** @cfgm{TM/HostHzFudgeFactorOtherCpu, uint32_t, Hz, 0, UINT32_MAX, 110}
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* The number of Hz TMCalcHostTimerFrequency adds for the other CPUs. */
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uint32_t cPctHostHzFudgeFactorOtherCpu;
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/** @cfgm{TM/HostHzFudgeFactorCatchUp100, uint32_t, Hz, 0, UINT32_MAX, 300}
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* The fudge factor (expressed in percent) that catch-up percentages below
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* 100% is multiplied by. */
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uint32_t cPctHostHzFudgeFactorCatchUp100;
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/** @cfgm{TM/HostHzFudgeFactorCatchUp200, uint32_t, Hz, 0, UINT32_MAX, 250}
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* The fudge factor (expressed in percent) that catch-up percentages
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* 100%-199% is multiplied by. */
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uint32_t cPctHostHzFudgeFactorCatchUp200;
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/** @cfgm{TM/HostHzFudgeFactorCatchUp400, uint32_t, Hz, 0, UINT32_MAX, 200}
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* The fudge factor (expressed in percent) that catch-up percentages
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* 200%-399% is multiplied by. */
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uint32_t cPctHostHzFudgeFactorCatchUp400;
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/** The UTC offset in ns.
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* This is *NOT* for converting UTC to local time. It is for converting real
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* world UTC time to VM UTC time. This feature is indented for doing date
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* testing of software and similar.
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* @todo Implement warpdrive on UTC. */
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/** Timer queues for the different clock types - R3 Ptr */
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R3PTRTYPE(PTMTIMERQUEUE) paTimerQueuesR3;
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/** Timer queues for the different clock types - R0 Ptr */
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R0PTRTYPE(PTMTIMERQUEUE) paTimerQueuesR0;
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/** Timer queues for the different clock types - RC Ptr */
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RCPTRTYPE(PTMTIMERQUEUE) paTimerQueuesRC;
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/** Pointer to our RC mapping of the GIP. */
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RCPTRTYPE(void *) pvGIPRC;
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/** Pointer to our R3 mapping of the GIP. */
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R3PTRTYPE(void *) pvGIPR3;
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/** Pointer to a singly linked list of free timers.
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* This chain is using the TMTIMER::pBigNext members.
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* Only accessible from the emulation thread. */
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/** Pointer to a doubly linked list of created timers.
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* This chain is using the TMTIMER::pBigNext and TMTIMER::pBigPrev members.
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* Only accessible from the emulation thread. */
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/** The schedule timer timer handle (runtime timer).
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* This timer will do frequent check on pending queue schedules and
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* raise VM_FF_TIMER to pull EMTs attention to them.
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R3PTRTYPE(PRTTIMER) pTimer;
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/** Interval in milliseconds of the pTimer timer. */
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uint32_t u32TimerMillies;
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/** Indicates that queues are being run. */
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bool volatile fRunningQueues;
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/** Indicates that the virtual sync queue is being run. */
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bool volatile fRunningVirtualSyncQueue;
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bool afAlignment3[2];
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/** Lock serializing access to the timer lists. */
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PDMCRITSECT TimerCritSect;
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/** Lock serializing access to the VirtualSync clock. */
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PDMCRITSECT VirtualSyncLock;
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/** CPU load state for all the virtual CPUs (tmR3CpuLoadTimer). */
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TMCPULOADSTATE CpuLoad;
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/** TMR3TimerQueuesDo
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STAMPROFILE StatDoQueues;
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STAMPROFILEADV aStatDoQueues[TMCLOCK_MAX];
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STAMPROFILE StatScheduleOneRZ;
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STAMPROFILE StatScheduleOneR3;
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STAMCOUNTER StatScheduleSetFF;
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STAMCOUNTER StatPostponedR3;
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STAMCOUNTER StatPostponedRZ;
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STAMCOUNTER StatVirtualGet;
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STAMCOUNTER StatVirtualGetSetFF;
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STAMCOUNTER StatVirtualSyncGet;
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STAMCOUNTER StatVirtualSyncGetELoop;
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STAMCOUNTER StatVirtualSyncGetExpired;
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STAMCOUNTER StatVirtualSyncGetLockless;
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STAMCOUNTER StatVirtualSyncGetLocked;
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STAMCOUNTER StatVirtualSyncGetSetFF;
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STAMCOUNTER StatVirtualPause;
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STAMCOUNTER StatVirtualResume;
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STAMCOUNTER StatPoll;
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STAMCOUNTER StatPollAlreadySet;
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STAMCOUNTER StatPollELoop;
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STAMCOUNTER StatPollMiss;
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STAMCOUNTER StatPollRunning;
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STAMCOUNTER StatPollSimple;
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STAMCOUNTER StatPollVirtual;
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STAMCOUNTER StatPollVirtualSync;
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STAMCOUNTER StatTimerSet;
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STAMCOUNTER StatTimerSetOpt;
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STAMPROFILE StatTimerSetRZ;
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STAMPROFILE StatTimerSetR3;
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STAMCOUNTER StatTimerSetStStopped;
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STAMCOUNTER StatTimerSetStExpDeliver;
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STAMCOUNTER StatTimerSetStActive;
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STAMCOUNTER StatTimerSetStPendStop;
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STAMCOUNTER StatTimerSetStPendStopSched;
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STAMCOUNTER StatTimerSetStPendSched;
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STAMCOUNTER StatTimerSetStPendResched;
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STAMCOUNTER StatTimerSetStOther;
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/** TMTimerSetRelative
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STAMCOUNTER StatTimerSetRelative;
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STAMPROFILE StatTimerSetRelativeRZ;
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STAMPROFILE StatTimerSetRelativeR3;
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STAMCOUNTER StatTimerSetRelativeOpt;
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STAMCOUNTER StatTimerSetRelativeRacyVirtSync;
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STAMCOUNTER StatTimerSetRelativeStStopped;
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STAMCOUNTER StatTimerSetRelativeStExpDeliver;
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STAMCOUNTER StatTimerSetRelativeStActive;
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STAMCOUNTER StatTimerSetRelativeStPendStop;
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STAMCOUNTER StatTimerSetRelativeStPendStopSched;
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STAMCOUNTER StatTimerSetRelativeStPendSched;
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STAMCOUNTER StatTimerSetRelativeStPendResched;
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STAMCOUNTER StatTimerSetRelativeStOther;
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STAMPROFILE StatTimerStopRZ;
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STAMPROFILE StatTimerStopR3;
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/** VirtualSync - Running and Catching Up
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STAMCOUNTER StatVirtualSyncRun;
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STAMCOUNTER StatVirtualSyncRunRestart;
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STAMPROFILE StatVirtualSyncRunSlack;
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STAMCOUNTER StatVirtualSyncRunStop;
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STAMCOUNTER StatVirtualSyncRunStoppedAlready;
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STAMCOUNTER StatVirtualSyncGiveUp;
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STAMCOUNTER StatVirtualSyncGiveUpBeforeStarting;
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STAMPROFILEADV StatVirtualSyncCatchup;
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STAMCOUNTER aStatVirtualSyncCatchupInitial[TM_MAX_CATCHUP_PERIODS];
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STAMCOUNTER aStatVirtualSyncCatchupAdjust[TM_MAX_CATCHUP_PERIODS];
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/** TMR3VirtualSyncFF (non dedicated EMT). */
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STAMPROFILE StatVirtualSyncFF;
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/** The timer callback. */
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STAMCOUNTER StatTimerCallbackSetFF;
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/** Calls to TMCpuTickSet. */
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STAMCOUNTER StatTSCSet;
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/** @name Reasons for refusing TSC offsetting in TMCpuTickCanUseRealTSC.
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STAMCOUNTER StatTSCNotFixed;
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STAMCOUNTER StatTSCNotTicking;
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STAMCOUNTER StatTSCCatchupLE010;
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STAMCOUNTER StatTSCCatchupLE025;
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STAMCOUNTER StatTSCCatchupLE100;
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STAMCOUNTER StatTSCCatchupOther;
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STAMCOUNTER StatTSCWarp;
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STAMCOUNTER StatTSCUnderflow;
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STAMCOUNTER StatTSCSyncNotTicking;
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/** Pointer to TM VM instance data. */
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* TM VMCPU Instance data.
614
* Changes to this must checked against the padding of the tm union in VM!
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/** Offset to the VMCPU structure.
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/** CPU timestamp ticking enabled indicator (bool). (RDTSC) */
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bool afAlignment0[3]; /**< alignment padding */
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/** The offset between the raw TSC source and the Guest TSC.
627
* Only valid if fTicking is set and and fTSCUseRealTSC is clear. */
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uint64_t offTSCRawSrc;
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/** The guest TSC when fTicking is cleared. */
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/** The last seen TSC by the guest. */
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uint64_t u64TSCLastSeen;
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#ifndef VBOX_WITHOUT_NS_ACCOUNTING
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/** The nanosecond timestamp of the CPU start or resume.
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* This is recalculated when the VM is started so that
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* cNsTotal = RTTimeNanoTS() - u64NsTsStartCpu. */
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uint64_t u64NsTsStartTotal;
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/** The nanosecond timestamp of the last start-execute notification. */
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uint64_t u64NsTsStartExecuting;
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/** The nanosecond timestamp of the last start-halt notification. */
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uint64_t u64NsTsStartHalting;
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/** The cNsXXX generation. */
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uint32_t volatile uTimesGen;
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/** Explicit alignment padding. */
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uint32_t u32Alignment;
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/** The number of nanoseconds total run time.
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* @remarks This is updated when cNsExecuting and cNsHalted are updated. */
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/** The number of nanoseconds spent executing. */
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uint64_t cNsExecuting;
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/** The number of nanoseconds being halted. */
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/** The number of nanoseconds spent on other things.
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* @remarks This is updated when cNsExecuting and cNsHalted are updated. */
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/** The number of halts. */
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uint64_t cPeriodsHalted;
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/** The number of guest execution runs. */
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uint64_t cPeriodsExecuting;
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# if defined(VBOX_WITH_STATISTICS) || defined(VBOX_WITH_NS_ACCOUNTING_STATS)
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/** Resettable version of cNsTotal. */
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STAMCOUNTER StatNsTotal;
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/** Resettable version of cNsExecuting. */
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STAMPROFILE StatNsExecuting;
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/** Long execution intervals. */
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STAMPROFILE StatNsExecLong;
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/** Short execution intervals . */
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STAMPROFILE StatNsExecShort;
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/** Tiny execution intervals . */
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STAMPROFILE StatNsExecTiny;
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/** Resettable version of cNsHalted. */
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STAMPROFILE StatNsHalted;
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/** Resettable version of cNsOther. */
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STAMPROFILE StatNsOther;
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/** CPU load state for this virtual CPU (tmR3CpuLoadTimer). */
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TMCPULOADSTATE CpuLoad;
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/** Pointer to TM VMCPU instance data. */
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typedef TMCPU *PTMCPU;
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#if 0 /* enable this to rule out locking bugs on single cpu guests. */
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# define tmTimerLock(pVM) VINF_SUCCESS
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# define tmTimerTryLock(pVM) VINF_SUCCESS
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# define tmTimerUnlock(pVM) ((void)0)
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# define tmVirtualSyncLock(pVM) VINF_SUCCESS
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# define tmVirtualSyncTryLock(pVM) VINF_SUCCESS
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# define tmVirtualSyncUnlock(pVM) ((void)0)
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# define TM_ASSERT_LOCK(pVM) VM_ASSERT_EMT(pVM)
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int tmTimerLock(PVM pVM);
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int tmTimerTryLock(PVM pVM);
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void tmTimerUnlock(PVM pVM);
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/** Checks that the caller owns the timer lock. */
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#define TM_ASSERT_LOCK(pVM) Assert(PDMCritSectIsOwner(&pVM->tm.s.TimerCritSect))
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int tmVirtualSyncLock(PVM pVM);
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int tmVirtualSyncTryLock(PVM pVM);
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void tmVirtualSyncUnlock(PVM pVM);
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const char *tmTimerState(TMTIMERSTATE enmState);
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void tmTimerQueueSchedule(PVM pVM, PTMTIMERQUEUE pQueue);
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void tmTimerQueuesSanityChecks(PVM pVM, const char *pszWhere);
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int tmCpuTickPause(PVM pVM, PVMCPU pVCpu);
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int tmCpuTickResume(PVM pVM, PVMCPU pVCpu);
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int tmVirtualPauseLocked(PVM pVM);
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int tmVirtualResumeLocked(PVM pVM);
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DECLEXPORT(void) tmVirtualNanoTSBad(PRTTIMENANOTSDATA pData, uint64_t u64NanoTS, uint64_t u64DeltaPrev, uint64_t u64PrevNanoTS);
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DECLEXPORT(uint64_t) tmVirtualNanoTSRediscover(PRTTIMENANOTSDATA pData);
added
removed
src/VBox/VMM/include/TMInternal.h
