150 lines
2.6 KiB
C
150 lines
2.6 KiB
C
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/*++
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Copyright (c) 1999 Microsoft Corporation
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Module Name:
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timer.c
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Abstract:
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Contains CTE timer which uses NDIS_TIMERs. We need to do this so
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that the timer is fired on a global event rather than timer DPC.
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This is because some of the Millennium TDI clients touch pageable
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code, etc.
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Author:
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Scott Holden (sholden) 2/8/2000
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Revision History:
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--*/
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#include <tcpipbase.h>
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VOID
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CTEpTimerHandler(
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IN PVOID SS1,
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IN PVOID DeferredContext,
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IN PVOID SS2,
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IN PVOID SS3
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)
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{
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CTETimer *Timer;
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UNREFERENCED_PARAMETER(SS1);
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UNREFERENCED_PARAMETER(SS2);
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UNREFERENCED_PARAMETER(SS3);
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Timer = (CTETimer *) DeferredContext;
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(*Timer->t_handler)((CTEEvent *)Timer, Timer->t_arg);
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}
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void
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CTEInitTimer(
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CTETimer *Timer
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)
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/*++
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Routine Description:
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Initializes a CTE Timer variable.
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Arguments:
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Timer - Timer variable to initialize.
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Return Value:
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None.
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--*/
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{
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Timer->t_handler = NULL;
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Timer->t_arg = NULL;
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NdisInitializeTimer(&Timer->t_timer, CTEpTimerHandler, Timer);
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return;
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}
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void *
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CTEStartTimer(
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CTETimer *Timer,
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unsigned long DueTime,
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CTEEventRtn Handler,
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void *Context
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)
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/*++
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Routine Description:
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Sets a CTE Timer for expiration.
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Arguments:
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Timer - Pointer to a CTE Timer variable.
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DueTime - Time in milliseconds after which the timer should expire.
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Handler - Timer expiration handler routine.
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Context - Argument to pass to the handler.
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Return Value:
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0 if the timer could not be set. Nonzero otherwise.
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--*/
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{
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ASSERT(Handler != NULL);
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Timer->t_handler = Handler;
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Timer->t_arg = Context;
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NdisSetTimer(&Timer->t_timer, DueTime);
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return((void *) 1);
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}
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//++
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//
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// int
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// CTEStopTimer(
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// IN CTETimer *Timer
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// );
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//
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// Routine Description:
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//
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// Cancels a running CTE timer.
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//
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// Arguments:
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//
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// Timer - Pointer to the CTE Timer to be cancelled.
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//
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// Return Value:
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//
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// 0 if the timer could not be cancelled. Nonzero otherwise.
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//
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// Notes:
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//
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// Calling this function on a timer that is not active has no effect.
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// If this routine fails, the timer may be in the process of expiring
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// or may have already expired. In either case, the caller must
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// sychronize with the Handler function as appropriate.
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//
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//--
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int
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CTEStopTimer(
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IN CTETimer *Timer
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{
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BOOLEAN fTimerCancelled;
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NdisCancelTimer(&Timer->t_timer, &fTimerCancelled);
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return (fTimerCancelled);
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}
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