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/*
* ZeroTier One - Global Peer to Peer Ethernet
* Copyright (C) 2012-2013 ZeroTier Networks LLC
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*
* --
*
* ZeroTier may be used and distributed under the terms of the GPLv3, which
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
*
* If you would like to embed ZeroTier into a commercial application or
* redistribute it in a modified binary form, please contact ZeroTier Networks
* LLC. Start here: http://www.zerotier.com/
*/
#ifndef _ZT_CONDITION_HPP
#define _ZT_CONDITION_HPP
#include "Constants.hpp"
#include "NonCopyable.hpp"
#ifdef __WINDOWS__
#include <Windows.h>
#include <stdlib.h>
#include "Utils.hpp"
namespace ZeroTier {
class Condition : NonCopyable
{
public:
Condition()
throw()
{
_sem = CreateSemaphore(NULL,0,1,NULL);
}
~Condition()
{
CloseHandle(_sem);
}
inline void wait() const
throw()
{
WaitForSingleObject(_sem,INFINITE);
}
inline void wait(unsigned long ms) const
throw()
{
WaitForSingleObject(_sem,(DWORD)ms);
}
inline void signal() const
throw()
{
ReleaseSemaphore(_sem,1,NULL);
}
private:
HANDLE _sem;
};
} // namespace ZeroTier
#else // !__WINDOWS__
#include <time.h>
#include <stdlib.h>
#include <pthread.h>
#include "Utils.hpp"
namespace ZeroTier {
class Condition : NonCopyable
{
public:
Condition()
throw()
{
pthread_mutex_init(&_mh,(const pthread_mutexattr_t *)0);
pthread_cond_init(&_cond,(const pthread_condattr_t *)0);
}
~Condition()
{
pthread_cond_destroy(&_cond);
pthread_mutex_destroy(&_mh);
}
inline void wait() const
throw()
{
pthread_mutex_lock(const_cast <pthread_mutex_t *>(&_mh));
pthread_cond_wait(const_cast <pthread_cond_t *>(&_cond),const_cast <pthread_mutex_t *>(&_mh));
pthread_mutex_unlock(const_cast <pthread_mutex_t *>(&_mh));
}
inline void wait(unsigned long ms) const
throw()
{
uint64_t when = Utils::now() + (uint64_t)ms;
struct timespec ts;
ts.tv_sec = (unsigned long)(when / 1000);
ts.tv_nsec = (unsigned long)(when % 1000) * 1000000;
pthread_mutex_lock(const_cast <pthread_mutex_t *>(&_mh));
pthread_cond_timedwait(const_cast <pthread_cond_t *>(&_cond),const_cast <pthread_mutex_t *>(&_mh),&ts);
pthread_mutex_unlock(const_cast <pthread_mutex_t *>(&_mh));
}
inline void signal() const
throw()
{
pthread_cond_signal(const_cast <pthread_cond_t *>(&_cond));
}
private:
pthread_cond_t _cond;
pthread_mutex_t _mh;
};
} // namespace ZeroTier
#endif // !__WINDOWS__
#endif
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