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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: conditn.c,v $
* $Revision: 1.8 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#include "system.h"
#include <sal/types.h>
#include <osl/conditn.h>
#include <osl/diagnose.h>
#include <osl/time.h>
typedef struct _oslConditionImpl
{
pthread_cond_t m_Condition;
pthread_mutex_t m_Lock;
sal_Bool m_State;
} oslConditionImpl;
/*****************************************************************************/
/* osl_createCondition */
/*****************************************************************************/
oslCondition SAL_CALL osl_createCondition()
{
oslConditionImpl* pCond;
int nRet=0;
pCond = (oslConditionImpl*) malloc(sizeof(oslConditionImpl));
OSL_ASSERT(pCond);
if ( pCond == 0 )
{
return 0;
}
pCond->m_State = sal_False;
/* init condition variable with default attr. (PTHREAD_PROCESS_PRIVAT) */
nRet = pthread_cond_init(&pCond->m_Condition, PTHREAD_CONDATTR_DEFAULT);
if ( nRet != 0 )
{
OSL_TRACE("osl_createCondition : condition init failed. Errno: %d; '%s'\n",
nRet, strerror(nRet));
free(pCond);
return 0;
}
nRet = pthread_mutex_init(&pCond->m_Lock, PTHREAD_MUTEXATTR_DEFAULT);
if ( nRet != 0 )
{
OSL_TRACE("osl_createCondition : mutex init failed. Errno: %d; %s\n",
nRet, strerror(nRet));
nRet = pthread_cond_destroy(&pCond->m_Condition);
if ( nRet != 0 )
{
OSL_TRACE("osl_createCondition : destroy condition failed. Errno: %d; '%s'\n",
nRet, strerror(nRet));
}
free(pCond);
pCond = 0;
}
return (oslCondition)pCond;
}
/*****************************************************************************/
/* osl_destroyCondition */
/*****************************************************************************/
void SAL_CALL osl_destroyCondition(oslCondition Condition)
{
oslConditionImpl* pCond;
int nRet = 0;
if ( Condition )
{
pCond = (oslConditionImpl*)Condition;
nRet = pthread_cond_destroy(&pCond->m_Condition);
if ( nRet != 0 )
{
OSL_TRACE("osl_destroyCondition : destroy condition failed. Errno: %d; '%s'\n",
nRet, strerror(nRet));
}
nRet = pthread_mutex_destroy(&pCond->m_Lock);
if ( nRet != 0 )
{
OSL_TRACE("osl_destroyCondition : destroy mutex failed. Errno: %d; '%s'\n",
nRet, strerror(nRet));
}
free(Condition);
}
return;
}
/*****************************************************************************/
/* osl_setCondition */
/*****************************************************************************/
sal_Bool SAL_CALL osl_setCondition(oslCondition Condition)
{
oslConditionImpl* pCond;
int nRet=0;
OSL_ASSERT(Condition);
pCond = (oslConditionImpl*)Condition;
if ( pCond == 0 )
{
return sal_False;
}
nRet = pthread_mutex_lock(&pCond->m_Lock);
if ( nRet != 0 )
{
OSL_TRACE("osl_setCondition : mutex lock failed. Errno: %d; %s\n",
nRet, strerror(nRet));
return sal_False;
}
pCond->m_State = sal_True;
nRet = pthread_cond_broadcast(&pCond->m_Condition);
if ( nRet != 0 )
{
OSL_TRACE("osl_setCondition : condition broadcast failed. Errno: %d; %s\n",
nRet, strerror(nRet));
return sal_False;
}
nRet = pthread_mutex_unlock(&pCond->m_Lock);
if ( nRet != 0 )
{
OSL_TRACE("osl_setCondition : mutex unlock failed. Errno: %d; %s\n",
nRet, strerror(nRet));
return sal_False;
}
return sal_True;
}
/*****************************************************************************/
/* osl_resetCondition */
/*****************************************************************************/
sal_Bool SAL_CALL osl_resetCondition(oslCondition Condition)
{
oslConditionImpl* pCond;
int nRet=0;
OSL_ASSERT(Condition);
pCond = (oslConditionImpl*)Condition;
if ( pCond == 0 )
{
return sal_False;
}
nRet = pthread_mutex_lock(&pCond->m_Lock);
if ( nRet != 0 )
{
OSL_TRACE("osl_resetCondition : mutex lock failed. Errno: %d; %s\n",
nRet, strerror(nRet));
return sal_False;
}
pCond->m_State = sal_False;
nRet = pthread_mutex_unlock(&pCond->m_Lock);
if ( nRet != 0 )
{
OSL_TRACE("osl_resetCondition : mutex unlock failed. Errno: %d; %s\n",
nRet, strerror(nRet));
return sal_False;
}
return sal_True;
}
/*****************************************************************************/
/* osl_waitCondition */
/*****************************************************************************/
oslConditionResult SAL_CALL osl_waitCondition(oslCondition Condition, const TimeValue* pTimeout)
{
oslConditionImpl* pCond;
int nRet=0;
oslConditionResult Result = osl_cond_result_ok;
OSL_ASSERT(Condition);
pCond = (oslConditionImpl*)Condition;
if ( pCond == 0 )
{
return osl_cond_result_error;
}
nRet = pthread_mutex_lock(&pCond->m_Lock);
if ( nRet != 0 )
{
OSL_TRACE("osl_waitCondition : mutex lock failed. Errno: %d; %s\n",
nRet, strerror(nRet));
return osl_cond_result_error;
}
if ( pTimeout )
{
if ( ! pCond->m_State )
{
int ret;
struct timeval tp;
struct timespec to;
gettimeofday(&tp, NULL);
SET_TIMESPEC( to, tp.tv_sec + pTimeout->Seconds,
tp.tv_usec * 1000 + pTimeout->Nanosec );
/* spurious wake up prevention */
do
{
ret = pthread_cond_timedwait(&pCond->m_Condition, &pCond->m_Lock, &to);
if ( ret != 0 )
{
if ( ret == ETIME || ret == ETIMEDOUT )
{
Result = osl_cond_result_timeout;
nRet = pthread_mutex_unlock(&pCond->m_Lock);
if (nRet != 0)
{
OSL_TRACE("osl_waitCondition : mutex unlock failed. Errno: %d; %s\n",
nRet, strerror(nRet));
}
return Result;
}
else if ( ret != EINTR )
{
Result = osl_cond_result_error;
nRet = pthread_mutex_unlock(&pCond->m_Lock);
if ( nRet != 0 )
{
OSL_TRACE("osl_waitCondition : mutex unlock failed. Errno: %d; %s\n",
nRet, strerror(nRet));
}
return Result;
}
/* OSL_TRACE("EINTR\n");*/
}
}
while ( !pCond->m_State );
}
}
else
{
while ( !pCond->m_State )
{
nRet = pthread_cond_wait(&pCond->m_Condition, &pCond->m_Lock);
if ( nRet != 0 )
{
OSL_TRACE("osl_waitCondition : condition wait failed. Errno: %d; %s\n",
nRet, strerror(nRet));
Result = osl_cond_result_error;
nRet = pthread_mutex_unlock(&pCond->m_Lock);
if ( nRet != 0 )
{
OSL_TRACE("osl_waitCondition : mutex unlock failed. Errno: %d; %s\n",
nRet, strerror(nRet));
}
return Result;
}
}
}
nRet = pthread_mutex_unlock(&pCond->m_Lock);
if ( nRet != 0 )
{
OSL_TRACE("osl_waitCondition : mutex unlock failed. Errno: %d; %s\n",
nRet, strerror(nRet));
}
return Result;
}
/*****************************************************************************/
/* osl_checkCondition */
/*****************************************************************************/
sal_Bool SAL_CALL osl_checkCondition(oslCondition Condition)
{
sal_Bool State;
oslConditionImpl* pCond;
int nRet=0;
OSL_ASSERT(Condition);
pCond = (oslConditionImpl*)Condition;
if ( pCond == 0 )
{
return sal_False;
}
nRet = pthread_mutex_lock(&pCond->m_Lock);
if ( nRet != 0 )
{
OSL_TRACE("osl_checkCondition : mutex unlock failed. Errno: %d; %s\n",
nRet, strerror(nRet));
}
State = pCond->m_State;
nRet = pthread_mutex_unlock(&pCond->m_Lock);
if ( nRet != 0 )
{
OSL_TRACE("osl_checkCondition : mutex unlock failed. Errno: %d; %s\n",
nRet, strerror(nRet));
}
return State;
}
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