jcondition.cpp
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/***************************************************************************
* Copyright (C) 2005 by Jeff Ferr *
* root@sat *
* *
* This program 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; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program 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 General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "Stdafx.h"
#include "jcondition.h"
#include "jsemaphoreexception.h"
#include "jautolock.h"
#include "jsemaphoretimeoutexception.h"
namespace jthread {
Condition::Condition(int nblock):
jcommon::Object()
{
jcommon::Object::SetClassName("jthread::Condition");
#ifdef _WIN32
InitializeConditionVariable(&_condition);
#else
if (pthread_cond_init(&_condition, NULL) != 0) { //&cond) != 0) {
throw SemaphoreException("Init condition error !");
}
#endif
}
Condition::~Condition()
{
Release();
}
void Condition::Release()
{
try {
NotifyAll();
} catch (SemaphoreException &) {
}
#ifdef _WIN32
if (!CloseHandle(_event)) {
// throw ?
}
_event = INVALID_HANDLE_VALUE;
#else
pthread_cond_destroy(&_condition);
#endif
}
void Condition::Wait(Mutex *mutex)
{
#ifdef _WIN32
if ((void *)mutex == NULL) {
jthread::AutoLock lock(&_monitor);
if (SleepConditionVariableCS(&_condition, &_monitor._mutex, INFINITE) == 0) {
throw SemaphoreException("Condition wait error !");
}
} else {
if (SleepConditionVariableCS(&_condition, &monitor._mutex, INFINITE) == 0) {
throw SemaphoreException("Condition wait error !");
}
}
#else
if ((void *)mutex == NULL) {
jthread::AutoLock lock(&_monitor);
if (pthread_cond_wait(&_condition, &_monitor._mutex) != 0) {
throw SemaphoreException("Condition wait error !");
}
} else {
if (pthread_cond_wait(&_condition, &mutex->_mutex) != 0) {
throw SemaphoreException("Condition wait error !");
}
}
#endif
}
void Condition::Wait(uint64_t time_, Mutex *mutex)
{
#ifdef _WIN32
DWORD d = (DWORD)(time_/1000LL);
DWORD result;
if ((void *)mutex == NULL) {
jthread::AutoLock lock(&_monitor);
result = SleepConditionVariableCS(&_condition, &_monitor._mutex, d);
} else {
result = SleepConditionVariableCS(&_condition, &monitor._mutex, d);
}
if (result == 0) {
if (GetLastError() == WAIT_TIMEOUT) {
throw SemaphoreTimeoutException("Semaphore wait timeout");
} else {
throw SemaphoreException("Semaphore wait failed");
}
}
#else
struct timespec t;
int result = 0;
clock_gettime(CLOCK_REALTIME, &t);
t.tv_sec += (int64_t)(time_/1000000LL);
t.tv_nsec += (int64_t)((time_%1000000LL)*1000LL);
if ((void *)mutex == NULL) {
jthread::AutoLock lock(&_monitor);
result = pthread_cond_timedwait(&_condition, &_monitor._mutex, &t);
} else {
result = pthread_cond_timedwait(&_condition, &mutex->_mutex, &t);
}
if (result == ETIMEDOUT) {
throw SemaphoreTimeoutException("Semaphore wait timeout");
} else if (result < 0) {
throw SemaphoreException("Semaphore wait failed");
}
#endif
}
void Condition::Notify()
{
#ifdef _WIN32
WakeConditionVariable(&_condition);
#else
if (pthread_cond_signal(&_condition) != 0) {
throw SemaphoreException("Condition notify error !");
}
#endif
}
void Condition::NotifyAll()
{
#ifdef _WIN32
WakeAllConditionVariable(&_condition);
#else
if (pthread_cond_broadcast(&_condition) != 0) {
throw SemaphoreException("Condition notify all error !");
}
#endif
}
}