libcruft-util/threads/semaphore.hpp

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/*
* 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.
*
* Copyright 2015 Danny Robson <danny@nerdcruft.net>
*/
#ifndef __UTIL_THREADS_SEMAPHORE_HPP
#define __UTIL_THREADS_SEMAPHORE_HPP
#include <semaphore.h>
namespace util { namespace threads {
class semaphore {
public:
explicit semaphore (unsigned value = 0);
~semaphore ();
void wait (void);
bool try_wait (void);
void post (void);
sem_t native (void);
private:
sem_t m_id;
};
} }
#endif