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/*++
Copyright (c) 1991 Microsoft Corporation
Module Name:
bowtimer.h
Abstract:
This module declares definitions dealing with bowser timers.
Author:
Larry Osterman (larryo) 6-May-1991
Revision History:
6-May-1991 larryo
Created
--*/
#ifndef _BOWTIMER_
#define _BOWTIMER_
struct _TRANSPORT;
typedef
NTSTATUS
(*PBOWSER_TIMER_ROUTINE)(
IN struct _TRANSPORT *Transport
);
// BOWSER_TIMER flags:
// Canceled is TRUE when a timer is cancelled but is already in
// the dpc queue.
//
// AlreadySet is used to ensure we stop the timer before restarting it.
//
// Reset is set to TRUE when a timer has been stopped and restarted while
// in the dpc queue. The Lock is used to ensure ordered access.
// Note: a timer can be stopped and reset multiple times before it gets
// to the front of the dpc queue.
//
typedef struct _BOWSER_TIMER {
KDPC Dpc;
KTIMER Timer;
KSPIN_LOCK Lock;
KEVENT TimerInactiveEvent;
PBOWSER_TIMER_ROUTINE TimerRoutine;
PVOID TimerContext;
LARGE_INTEGER Timeout;
WORK_QUEUE_ITEM WorkItem;
BOOLEAN AlreadySet;
BOOLEAN Initialized;
BOOLEAN Canceled;
BOOLEAN SetAgain;
} BOWSER_TIMER, *PBOWSER_TIMER;
VOID
BowserInitializeTimer(
IN PBOWSER_TIMER Timer
);
VOID
BowserStopTimer (
IN PBOWSER_TIMER Timer
);
VOID
BowserUninitializeTimer(
IN PBOWSER_TIMER Timer
);
BOOLEAN
BowserStartTimer (
IN PBOWSER_TIMER Timer,
IN ULONG MillisecondsToExpireTimer,
IN PBOWSER_TIMER_ROUTINE TimerExpirationRoutine,
IN PVOID Context
);
#endif // _BOWTIMER_
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