semnoint-generic.cpp revision 677833bc953b6cb418c701facbdcf4aa18d6c44e
/* $Id$ */
/** @file
* InnoTek Portable Runtime - Generic Non-Interruptable Wait and Request Functions.
*/
/*
* Copyright (C) 2006 InnoTek Systemberatung GmbH
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License as published by the Free Software Foundation,
* in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
* distribution. VirtualBox OSE is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY of any kind.
*
* If you received this file as part of a commercial VirtualBox
* distribution, then only the terms of your commercial VirtualBox
* license agreement apply instead of the previous paragraph.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#define LOG_GROUP RTLOGGROUP_SEM
#include <iprt/semaphore.h>
#include <iprt/time.h>
#include <iprt/err.h>
#include <iprt/assert.h>
RTDECL(int) RTSemEventWait(RTSEMEVENT EventSem, unsigned cMillies)
{
int rc;
if (cMillies == RT_INDEFINITE_WAIT)
{
do rc = RTSemEventWaitNoResume(EventSem, cMillies);
while (rc == VERR_INTERRUPTED);
}
else
{
const uint64_t u64Start = RTTimeMilliTS();
rc = RTSemEventWaitNoResume(EventSem, cMillies);
if (rc == VERR_INTERRUPTED)
{
do
{
uint64_t u64Elapsed = RTTimeMilliTS() - u64Start;
if (u64Elapsed >= cMillies)
return VERR_TIMEOUT;
rc = RTSemEventWaitNoResume(EventSem, cMillies - (unsigned)u64Elapsed);
} while (rc == VERR_INTERRUPTED);
}
}
return rc;
}
RTDECL(int) RTSemEventMultiWait(RTSEMEVENTMULTI EventSem, unsigned cMillies)
{
int rc;
if (cMillies == RT_INDEFINITE_WAIT)
{
do rc = RTSemEventMultiWaitNoResume(EventSem, cMillies);
while (rc == VERR_INTERRUPTED);
}
else
{
const uint64_t u64Start = RTTimeMilliTS();
rc = RTSemEventMultiWaitNoResume(EventSem, cMillies);
if (rc == VERR_INTERRUPTED)
{
do
{
uint64_t u64Elapsed = RTTimeMilliTS() - u64Start;
if (u64Elapsed >= cMillies)
return VERR_TIMEOUT;
rc = RTSemEventMultiWaitNoResume(EventSem, cMillies - (unsigned)u64Elapsed);
} while (rc == VERR_INTERRUPTED);
}
}
return rc;
}
RTDECL(int) RTSemMutexRequest(RTSEMMUTEX Mutex, unsigned cMillies)
{
int rc;
if (cMillies == RT_INDEFINITE_WAIT)
{
do rc = RTSemMutexRequestNoResume(Mutex, cMillies);
while (rc == VERR_INTERRUPTED);
}
else
{
const uint64_t u64Start = RTTimeMilliTS();
rc = RTSemMutexRequestNoResume(Mutex, cMillies);
if (rc == VERR_INTERRUPTED)
{
do
{
uint64_t u64Elapsed = RTTimeMilliTS() - u64Start;
if (u64Elapsed >= cMillies)
return VERR_TIMEOUT;
rc = RTSemMutexRequestNoResume(Mutex, cMillies - (unsigned)u64Elapsed);
} while (rc == VERR_INTERRUPTED);
}
}
return rc;
}