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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_MUTEX_HPP
#define _ZT_MUTEX_HPP
#include "Constants.hpp"
#include "NonCopyable.hpp"
#ifdef __UNIX_LIKE__
#include <stdlib.h>
#include <pthread.h>
namespace ZeroTier {
class Mutex : NonCopyable
{
public:
Mutex()
throw()
{
pthread_mutex_init(&_mh,(const pthread_mutexattr_t *)0);
}
~Mutex()
{
pthread_mutex_destroy(&_mh);
}
inline void lock()
throw()
{
pthread_mutex_lock(&_mh);
}
inline void unlock()
throw()
{
pthread_mutex_unlock(&_mh);
}
inline void lock() const
throw()
{
(const_cast <Mutex *> (this))->lock();
}
inline void unlock() const
throw()
{
(const_cast <Mutex *> (this))->unlock();
}
/**
* Uses C++ contexts and constructor/destructor to lock/unlock automatically
*/
class Lock : NonCopyable
{
public:
Lock(Mutex &m)
throw() :
_m(&m)
{
m.lock();
}
Lock(const Mutex &m)
throw() :
_m(const_cast<Mutex *>(&m))
{
_m->lock();
}
~Lock()
{
_m->unlock();
}
private:
Mutex *const _m;
};
private:
pthread_mutex_t _mh;
};
} // namespace ZeroTier
#endif // Apple / Linux
#ifdef __WINDOWS__
#include <stdlib.h>
#include <Windows.h>
namespace ZeroTier {
class Mutex : NonCopyable
{
public:
Mutex()
throw()
{
InitializeCriticalSection(&_cs);
}
~Mutex()
{
DeleteCriticalSection(&_cs);
}
inline void lock()
throw()
{
EnterCriticalSection(&_cs);
}
inline void unlock()
throw()
{
LeaveCriticalSection(&_cs);
}
inline void lock() const
throw()
{
(const_cast <Mutex *> (this))->lock();
}
inline void unlock() const
throw()
{
(const_cast <Mutex *> (this))->unlock();
}
class Lock : NonCopyable
{
public:
Lock(Mutex &m)
throw() :
_m(&m)
{
m.lock();
}
Lock(const Mutex &m)
throw() :
_m(const_cast<Mutex *>(&m))
{
_m->lock();
}
~Lock()
{
_m->unlock();
}
private:
Mutex *const _m;
};
private:
CRITICAL_SECTION _cs;
};
} // namespace ZeroTier
#endif // _WIN32
#endif
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