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/*
* Copyright (c)2019 ZeroTier, Inc.
*
* Use of this software is governed by the Business Source License included
* in the LICENSE.TXT file in the project's root directory.
*
* Change Date: 2025-01-01
*
* On the date above, in accordance with the Business Source License, use
* of this software will be governed by version 2.0 of the Apache License.
*/
/****/
#ifndef ZT_MUTEX_HPP
#define ZT_MUTEX_HPP
#include "Constants.hpp"
#ifdef __UNIX_LIKE__
#include <stdint.h>
#include <stdlib.h>
#include <pthread.h>
namespace ZeroTier {
// libpthread based mutex lock
class Mutex
{
public:
Mutex()
{
pthread_mutex_init(&_mh,(const pthread_mutexattr_t *)0);
}
~Mutex()
{
pthread_mutex_destroy(&_mh);
}
inline void lock() const
{
pthread_mutex_lock(&((const_cast <Mutex *> (this))->_mh));
}
inline void unlock() const
{
pthread_mutex_unlock(&((const_cast <Mutex *> (this))->_mh));
}
class Lock
{
public:
Lock(Mutex &m) :
_m(&m)
{
m.lock();
}
Lock(const Mutex &m) :
_m(const_cast<Mutex *>(&m))
{
_m->lock();
}
~Lock()
{
_m->unlock();
}
private:
Mutex *const _m;
};
private:
Mutex(const Mutex &) {}
const Mutex &operator=(const Mutex &) { return *this; }
pthread_mutex_t _mh;
};
} // namespace ZeroTier
#endif
#ifdef __WINDOWS__
#include <stdlib.h>
#include <windows.h>
namespace ZeroTier {
// Windows critical section based lock
class Mutex
{
public:
Mutex()
{
InitializeCriticalSection(&_cs);
}
~Mutex()
{
DeleteCriticalSection(&_cs);
}
inline void lock()
{
EnterCriticalSection(&_cs);
}
inline void unlock()
{
LeaveCriticalSection(&_cs);
}
inline void lock() const
{
(const_cast <Mutex *> (this))->lock();
}
inline void unlock() const
{
(const_cast <Mutex *> (this))->unlock();
}
class Lock
{
public:
Lock(Mutex &m) :
_m(&m)
{
m.lock();
}
Lock(const Mutex &m) :
_m(const_cast<Mutex *>(&m))
{
_m->lock();
}
~Lock()
{
_m->unlock();
}
private:
Mutex *const _m;
};
private:
Mutex(const Mutex &) {}
const Mutex &operator=(const Mutex &) { return *this; }
CRITICAL_SECTION _cs;
};
} // namespace ZeroTier
#endif // _WIN32
#endif
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