161 lines
3.6 KiB
C
161 lines
3.6 KiB
C
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/*++
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Copyright (c) 1992 Microsoft Corporation
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Module Name:
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atktimer.h
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Abstract:
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This module contains routines to schedule timer events.
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Author:
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Jameel Hyder (jameelh@microsoft.com)
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Nikhil Kamkolkar (nikhilk@microsoft.com)
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Revision History:
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19 Jun 1992 Initial Version
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Notes: Tab stop: 4
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--*/
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#ifndef _ATKTIMER_
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#define _ATKTIMER_
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struct _TimerList;
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typedef LONG (FASTCALL * TIMER_ROUTINE)(IN struct _TimerList *pTimer, IN BOOLEAN TimerShuttingDown);
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#define TMR_SIGNATURE *(PULONG)"ATMR"
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#if DBG
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#define VALID_TMR(pTmr) (((pTmr) != NULL) && \
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((pTmr)->tmr_Signature == TMR_SIGNATURE))
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#else
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#define VALID_TMR(pTmr) ((pTmr) != NULL)
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#endif
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typedef struct _TimerList
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{
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#if DBG
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ULONG tmr_Signature;
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#endif
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struct _TimerList * tmr_Next; // Link to next
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struct _TimerList ** tmr_Prev; // Link to prev
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TIMER_ROUTINE tmr_Routine; // Timer routine
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SHORT tmr_AbsTime; // Absolute time, for re-enqueue
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SHORT tmr_RelDelta; // Relative to the previous entry
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union
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{
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struct
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{
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BOOLEAN tmr_Queued; // TRUE, if currently queued
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BOOLEAN tmr_Cancelled; // TRUE, if cancelled
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BOOLEAN tmr_Running; // TRUE, if currently running
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BOOLEAN tmr_CancelIt; // TRUE, if cancel called while active
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};
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DWORD tmr_Bools; // For clearing all
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};
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} TIMERLIST, *PTIMERLIST;
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extern
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NTSTATUS
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AtalkTimerInit(
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VOID
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);
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/*** AtalkTimerInitialize
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*
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* Initialize the timer list structure.
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extern
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VOID
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AtalkTimerInitialize(
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IN PTIMERLIST pList, // TimerList to use for queuing
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IN TIMER_ROUTINE TimerRoutine, // TimerRoutine
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IN SHORT DeltaTime // Schedule after this much time
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);
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*/
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#if DBG
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#define AtalkTimerInitialize(pList, TimerRoutine, DeltaTime) \
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{ \
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(pList)->tmr_Signature = TMR_SIGNATURE; \
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(pList)->tmr_Routine = TimerRoutine; \
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(pList)->tmr_AbsTime = DeltaTime; \
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(pList)->tmr_Bools = 0; \
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}
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#else
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#define AtalkTimerInitialize(pList, TimerRoutine, DeltaTime) \
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{ \
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(pList)->tmr_Routine = TimerRoutine; \
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(pList)->tmr_AbsTime = DeltaTime; \
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(pList)->tmr_Bools = 0; \
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}
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#endif
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extern
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VOID FASTCALL
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AtalkTimerScheduleEvent(
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IN PTIMERLIST pTimerList // TimerList to use for queuing
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);
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extern
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VOID
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AtalkTimerFlushAndStop(
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VOID
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);
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extern
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BOOLEAN FASTCALL
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AtalkTimerCancelEvent(
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IN PTIMERLIST pTimerList, // TimerList used for queuing
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IN PDWORD pdwOldState // return old state
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);
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#define AtalkTimerSetAbsTime(pTimerList, AbsTime) \
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{ \
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ASSERT(!(pTimerList)->tmr_Queued); \
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(pTimerList)->tmr_AbsTime = AbsTime; \
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}
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extern LONG AtalkTimerCurrentTick;
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#define AtalkGetCurrentTick() AtalkTimerCurrentTick
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// Keep this at 100ms unit
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#define ATALK_TIMER_FACTOR 10 // i.e. 10 ticks per second
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#define ATALK_TIMER_TICK -1000000L // 100ms in 100ns units
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#define ATALK_TIMER_NO_REQUEUE 0 // Do not re-enqueue
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#define ATALK_TIMER_REQUEUE -1 // Re-enqueue at current count
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#define ATALK_TIMER_QUEUED 1
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#define ATALK_TIMER_RUNNING 2
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#define ATALK_TIMER_CANCELLED 3
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extern PTIMERLIST atalkTimerList;
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extern ATALK_SPIN_LOCK atalkTimerLock;
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extern LARGE_INTEGER atalkTimerTick;
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extern KTIMER atalkTimer;
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extern KDPC atalkTimerDpc;
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extern KEVENT atalkTimerStopEvent;
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extern BOOLEAN atalkTimerStopped; // Set to TRUE if timer system stopped
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extern BOOLEAN atalkTimerRunning; // Set to TRUE when timer Dpc is running
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LOCAL VOID
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atalkTimerDpcRoutine(
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IN PKDPC pKDpc,
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IN PVOID pContext,
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IN PVOID SystemArgument1,
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IN PVOID SystemArgument2
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);
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LOCAL VOID FASTCALL
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atalkTimerEnqueue(
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IN PTIMERLIST pList
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);
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#endif // _ATKTIMER_
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