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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include "sal/config.h"
#include <assert.h>
#include "system.h"
#include <sal/log.hxx>
#include <sal/types.h>
#include <osl/conditn.h>
#include <osl/time.h>
typedef struct _oslConditionImpl
{
pthread_cond_t m_Condition;
pthread_mutex_t m_Lock;
bool m_State;
} oslConditionImpl;
oslCondition SAL_CALL osl_createCondition()
{
oslConditionImpl* pCond;
int nRet=0;
pCond = (oslConditionImpl*) malloc(sizeof(oslConditionImpl));
if ( pCond == 0 )
{
SAL_WARN("sal.osl", "std::bad_alloc in C");
return 0;
}
pCond->m_State = false;
/* init condition variable with default attr. (PTHREAD_PROCESS_PRIVAT) */
nRet = pthread_cond_init(&pCond->m_Condition, PTHREAD_CONDATTR_DEFAULT);
if ( nRet != 0 )
{
SAL_WARN(
"sal.osl",
"pthread_cond_init failed, errno " << nRet << ", \""
<< strerror(nRet) << '"');
free(pCond);
return 0;
}
nRet = pthread_mutex_init(&pCond->m_Lock, PTHREAD_MUTEXATTR_DEFAULT);
if ( nRet != 0 )
{
SAL_WARN(
"sal.osl",
"pthread_mutex_init failed, errno " << nRet << ", \""
<< strerror(nRet) << '"');
nRet = pthread_cond_destroy(&pCond->m_Condition);
SAL_WARN_IF(
nRet != 0, "sal.osl",
"pthread_cond_destroy failed, errno " << nRet << ", \""
<< strerror(nRet) << '"');
free(pCond);
pCond = 0;
}
return (oslCondition)pCond;
}
void SAL_CALL osl_destroyCondition(oslCondition Condition)
{
oslConditionImpl* pCond;
int nRet = 0;
if ( Condition )
{
pCond = (oslConditionImpl*)Condition;
nRet = pthread_cond_destroy(&pCond->m_Condition);
SAL_WARN_IF(
nRet != 0, "sal.osl",
"pthread_cond_destroy failed, errno " << nRet << ", \""
<< strerror(nRet) << '"');
nRet = pthread_mutex_destroy(&pCond->m_Lock);
SAL_WARN_IF(
nRet != 0, "sal.osl",
"pthread_mutex_destroy failed, errno " << nRet << ", \""
<< strerror(nRet) << '"');
free(Condition);
}
return;
}
sal_Bool SAL_CALL osl_setCondition(oslCondition Condition)
{
oslConditionImpl* pCond;
int nRet=0;
assert(Condition);
pCond = (oslConditionImpl*)Condition;
if ( pCond == 0 )
{
return sal_False;
}
nRet = pthread_mutex_lock(&pCond->m_Lock);
if ( nRet != 0 )
{
SAL_WARN(
"sal.osl",
"pthread_mutex_lock failed, errno " << nRet << ", \""
<< strerror(nRet) << '"');
return sal_False;
}
pCond->m_State = true;
nRet = pthread_cond_broadcast(&pCond->m_Condition);
if ( nRet != 0 )
{
SAL_WARN(
"sal.osl",
"pthread_cond_broadcast failed, errno " << nRet << ", \""
<< strerror(nRet) << '"');
// try to unlock the mutex
pthread_mutex_unlock(&pCond->m_Lock);
return sal_False;
}
nRet = pthread_mutex_unlock(&pCond->m_Lock);
if ( nRet != 0 )
{
SAL_WARN(
"sal.osl",
"pthread_mutex_unlock failed, errno " << nRet << ", \""
<< strerror(nRet) << '"');
return sal_False;
}
return sal_True;
}
sal_Bool SAL_CALL osl_resetCondition(oslCondition Condition)
{
oslConditionImpl* pCond;
int nRet=0;
assert(Condition);
pCond = (oslConditionImpl*)Condition;
if ( pCond == 0 )
{
return sal_False;
}
nRet = pthread_mutex_lock(&pCond->m_Lock);
if ( nRet != 0 )
{
SAL_WARN(
"sal.osl",
"pthread_mutex_lock failed, errno " << nRet << ", \""
<< strerror(nRet) << '"');
return sal_False;
}
pCond->m_State = false;
nRet = pthread_mutex_unlock(&pCond->m_Lock);
if ( nRet != 0 )
{
SAL_WARN(
"sal.osl", "pthread_mutex_unlock failed, errno " << nRet <<", \""
<< strerror(nRet) << '"');
return sal_False;
}
return sal_True;
}
oslConditionResult SAL_CALL osl_waitCondition(oslCondition Condition, const TimeValue* pTimeout)
{
oslConditionImpl* pCond;
int nRet=0;
oslConditionResult Result = osl_cond_result_ok;
assert(Condition);
pCond = (oslConditionImpl*)Condition;
if ( pCond == 0 )
{
return osl_cond_result_error;
}
nRet = pthread_mutex_lock(&pCond->m_Lock);
if ( nRet != 0 )
{
SAL_WARN(
"sal.osl", "pthread_mutex_lock failed, errno " << 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);
SAL_WARN_IF(
nRet != 0, "sal.osl",
"pthread_mutex_unlock failed, errno " << nRet
<< ", \"" << strerror(nRet) << '"');
return Result;
}
else if ( ret != EINTR )
{
Result = osl_cond_result_error;
nRet = pthread_mutex_unlock(&pCond->m_Lock);
SAL_WARN_IF(
nRet != 0, "sal.osl",
"pthread_mutex_unlock failed, errno " << nRet
<< ", \"" << strerror(nRet) << '"');
return Result;
}
}
}
while ( !pCond->m_State );
}
}
else
{
while ( !pCond->m_State )
{
nRet = pthread_cond_wait(&pCond->m_Condition, &pCond->m_Lock);
if ( nRet != 0 )
{
SAL_WARN(
"sal.osl",
"pthread_cond_wait failed, errno " << nRet << ", \""
<< strerror(nRet) << '"');
Result = osl_cond_result_error;
nRet = pthread_mutex_unlock(&pCond->m_Lock);
SAL_WARN_IF(
nRet != 0, "sal.osl",
"pthread_mutex_unlock failed, errno " << nRet << ", \""
<< strerror(nRet) << '"');
return Result;
}
}
}
nRet = pthread_mutex_unlock(&pCond->m_Lock);
SAL_WARN_IF(
nRet != 0, "sal.osl",
"pthread_mutex_unlock failed, errno " << nRet << ", \""
<< strerror(nRet) << '"');
return Result;
}
sal_Bool SAL_CALL osl_checkCondition(oslCondition Condition)
{
bool State;
oslConditionImpl* pCond;
int nRet=0;
assert(Condition);
pCond = (oslConditionImpl*)Condition;
if ( pCond == 0 )
{
return sal_False;
}
nRet = pthread_mutex_lock(&pCond->m_Lock);
SAL_WARN_IF(
nRet != 0, "sal.osl",
"pthread_mutex_lock failed, errno " << nRet << ", \"" << strerror(nRet)
<< '"');
State = pCond->m_State;
nRet = pthread_mutex_unlock(&pCond->m_Lock);
SAL_WARN_IF(
nRet != 0, "sal.osl",
"pthread_mutex_unlock failed, errno " << nRet << ", \""
<< strerror(nRet) << '"');
return State;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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