Leaked source code of windows server 2003
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/*++
Copyright (c) 1996 Microsoft Corporation
Module Name:
timer.c
Abstract:
Cluster FM callback routines to be invoked on a timer
Author:
Sunita shrivastava (sunitas) 24-Sep-1998
Revision History:
--*/
#include "fmp.h"
#include "ntrtl.h"
#define LOG_MODULE TIMER
/****
@func DWORD | FmpQueueTimerActivity| This is invoked by gum when fm requests
a vote for a given context.
@parm IN DWORD | dwInterval| The time in msec to wait.
@parm IN PFN_TIMER_CALLBACK | pfnTimerCb | The callback funtion
to be invoked when the given time elapses.
@parm IN PVOID | pContext| A pointer to a context structure that is
passed back to the callback function.
@comm It is assumed that FM wants to use one shot timers.
@rdesc Returns a result code. ERROR_SUCCESS on success.
@xref <f AddTimerActivity>
****/
DWORD
FmpQueueTimerActivity(
IN DWORD dwInterval,
IN PFN_TIMER_CALLBACK pfnTimerCb,
IN PVOID pContext
)
{
HANDLE hTimer = NULL;
DWORD dwStatus;
hTimer = CreateWaitableTimer(NULL, FALSE, NULL);
if (!hTimer)
{
dwStatus = GetLastError();
CL_LOGFAILURE(dwStatus);
goto FnExit;
}
//register the timer for this log with the activity timer thread
dwStatus = AddTimerActivity(hTimer, dwInterval, 0, pfnTimerCb, pContext);
if (dwStatus != ERROR_SUCCESS)
{
CloseHandle(hTimer);
goto FnExit;
}
FnExit:
return(dwStatus);
} // FmpQueueTimerActivity
/****
@func DWORD | FmpReslistOnlineRetryCb| This is invoked by timer
activity thread to bring a resource list online again.
@parm IN VOID | pContext| a pointer to PFM_RESLIST_ONLINE_RETRY_INFO
structure containing information about the group and
resources to bring online.
@comm We dont do the work here since the timer lock is held and we
want to avoid acquiring the group lock while the timer lock
is held.
@rdesc Returns a result code. ERROR_SUCCESS on success.
@xref <f FmpWorkerThread> <f FmpOnlineResourceList>
****/
void
WINAPI
FmpReslistOnlineRetryCb(
IN HANDLE hTimer,
IN PVOID pContext
)
{
ClRtlLogPrint(LOG_NOISE,
"[FM] FmpResListOnlineRetryCb: Called to retry bringing the group online\r\n");
//post a work item, since we dont wont to acquire group locks
//while the timer lock is acquired
//pass hTimer as second Context value to be used by RemoveTimerActivity
FmpPostWorkItem(FM_EVENT_INTERNAL_RETRY_ONLINE, pContext,
(ULONG_PTR)hTimer);
return;
}