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#ifndef _sys_Mutex_h
#define _sys_Mutex_h
/*
*
* Copyright (c) 2006 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
namespace qpid {
namespace sys {
/**
* Scoped lock template: calls lock() in ctor, unlock() in dtor.
* L can be any class with lock() and unlock() functions.
*/
template <class L>
class ScopedLock
{
public:
ScopedLock(L& l) : mutex(l) { l.lock(); }
~ScopedLock() { mutex.unlock(); }
private:
L& mutex;
};
template <class L>
class ScopedUnlock
{
public:
ScopedUnlock(L& l) : mutex(l) { l.unlock(); }
~ScopedUnlock() { mutex.lock(); }
private:
L& mutex;
};
template <class L>
class ScopedRlock
{
public:
ScopedRlock(L& l) : mutex(l) { l.rlock(); }
~ScopedRlock() { mutex.unlock(); }
private:
L& mutex;
};
template <class L>
class ScopedWlock
{
public:
ScopedWlock(L& l) : mutex(l) { l.wlock(); }
~ScopedWlock() { mutex.unlock(); }
private:
L& mutex;
};
template <class L>
class ConditionalScopedLock
{
public:
ConditionalScopedLock(L& l) : mutex(l) { acquired = l.trylock(); }
~ConditionalScopedLock() { if (acquired) mutex.unlock(); }
bool lockAcquired() { return acquired; }
private:
L& mutex;
bool acquired;
};
}}
#ifdef USE_APR_PLATFORM
#include "apr/Mutex.h"
#elif defined (_WIN32)
#include "windows/Mutex.h"
#else
#include "posix/Mutex.h"
#endif
#endif /*!_sys_Mutex_h*/
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