minetest/src/threading/event.cpp
sfan5 0a16e53b40 Fix C++11 Windows build of threading code
The initial problem was that mutex_auto_lock.h tries to use std::unique_lock<std::mutex>
	despite mutex.h not using C++11's std::mutex on Windows. The problem here is the mismatch
	between C++11 usage conditions of the two headers. This commit moves the decision logic
	to threads.h and makes sure mutex.h, mutex_auto_lock.h and event.h all use the same features.
2016-10-06 22:37:30 +02:00

90 lines
2.2 KiB
C++

/*
This file is a part of the JThread package, which contains some object-
oriented thread wrappers for different thread implementations.
Copyright (c) 2000-2006 Jori Liesenborgs (jori.liesenborgs@gmail.com)
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
*/
#include "threading/event.h"
Event::Event()
{
#ifndef USE_CPP11_MUTEX
# if USE_WIN_MUTEX
event = CreateEvent(NULL, false, false, NULL);
# else
pthread_cond_init(&cv, NULL);
pthread_mutex_init(&mutex, NULL);
notified = false;
# endif
#endif
}
#ifndef USE_CPP11_MUTEX
Event::~Event()
{
#if USE_WIN_MUTEX
CloseHandle(event);
#else
pthread_cond_destroy(&cv);
pthread_mutex_destroy(&mutex);
#endif
}
#endif
void Event::wait()
{
#if USE_CPP11_MUTEX
MutexAutoLock lock(mutex);
while (!notified) {
cv.wait(lock);
}
notified = false;
#elif USE_WIN_MUTEX
WaitForSingleObject(event, INFINITE);
#else
pthread_mutex_lock(&mutex);
while (!notified) {
pthread_cond_wait(&cv, &mutex);
}
notified = false;
pthread_mutex_unlock(&mutex);
#endif
}
void Event::signal()
{
#if USE_CPP11_MUTEX
MutexAutoLock lock(mutex);
notified = true;
cv.notify_one();
#elif USE_WIN_MUTEX
SetEvent(event);
#else
pthread_mutex_lock(&mutex);
notified = true;
pthread_cond_signal(&cv);
pthread_mutex_unlock(&mutex);
#endif
}