102 lines
2.2 KiB
C
102 lines
2.2 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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spxtimer.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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#define TIMER_DONT_REQUEUE 0
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#define TIMER_REQUEUE_CUR_VALUE 1
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typedef ULONG (*TIMER_ROUTINE)(IN PVOID Context, IN BOOLEAN TimerShuttingDown);
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extern
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NTSTATUS
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SpxTimerInit(
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VOID);
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extern
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ULONG
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SpxTimerScheduleEvent(
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IN TIMER_ROUTINE Worker, // Routine to invoke when time expires
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IN ULONG DeltaTime, // Schedule after this much time
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IN PVOID pContext); // Context to pass to the routine
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extern
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VOID
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SpxTimerFlushAndStop(
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VOID);
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extern
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BOOLEAN
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SpxTimerCancelEvent(
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IN ULONG TimerId,
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IN BOOLEAN ReEnqueue);
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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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struct _TimerList * tmr_Overflow; // Link to overflow entry in hash table
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ULONG tmr_AbsTime; // Absolute time, for re-enqueue
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ULONG tmr_RelDelta; // Relative to the previous entry
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ULONG tmr_Id; // Unique Id for this event
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BOOLEAN tmr_Cancelled; // Was the timer cancelled?
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TIMER_ROUTINE tmr_Worker; // Real Worker
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PVOID tmr_Context; // Real context
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} TIMERLIST, *PTIMERLIST;
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#define SpxGetCurrentTime() (SpxTimerCurrentTime/SPX_TIMER_FACTOR)
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#define SpxGetCurrentTick() SpxTimerCurrentTime
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// Keep this at a ONE second level.
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#define SPX_TIMER_FACTOR 10 // i.e. 10 ticks per second
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#define SPX_MS_TO_TICKS 100 // Divide ms by this to get ticks
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#define SPX_TIMER_TICK -1000000L // 100ms in 100ns units
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#define SPX_TIMER_WAIT 50 // Time to wait in FlushAndStop in ms
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#define TIMER_HASH_TABLE 32
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VOID
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spxTimerDpcRoutine(
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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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VOID
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spxTimerWorker(
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IN PTIMERLIST pList);
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VOID
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spxTimerEnqueue(
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PTIMERLIST pListNew);
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