cond.hpp

Go to the documentation of this file.

#ifndef __FRIOS_POSIX_THREADS_COND_HPP__
#define __FRIOS_POSIX_THREADS_COND_HPP__

#include <frios/posix/error.hpp>
#include <frios/posix/threads/cond_attr.hpp>
#include <frios/posix/threads/mutex.hpp>

#include <pthread.h>

namespace frios {
namespace posix {


class cond
{
private:
    unique<pthread_cond_t> _cond;

    cond(const cond&) = delete;
public:
    struct init_error : error
    {
        init_error(int error_code)
         : error(error_code)
        { }
    };


    cond(void)
    {
        int fail = pthread_cond_init(&_cond, 0);
        if(fail) throw init_error(fail);
    }


    cond(const cond_attr& attributes)
    {
        int fail = pthread_cond_init(&_cond, &attributes._attr);
        if(fail) throw init_error(fail);
    }

    cond(cond&& tmp)
     : _cond(std::move(tmp._cond))
    { }

    ~cond(void)
    {
        if(_cond.valid())
            pthread_cond_destroy(&_cond);
    }

    void wait(mutex::lock& lock)
    {
        pthread_cond_wait(&_cond, lock._p_mutex);
    }

    void signal(void)
    {
        pthread_cond_signal(&_cond);
    }

    void broadcast(void)
    {
        pthread_cond_broadcast(&_cond);
    }
};

} // namespace posix
} // namespace frios

#endif // include guard