libcruft-util/threads/semaphore.hpp

/*
 * 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