rocketmq-client4cpp/src/kpr/Semaphore.h

/**
 * Copyright (C) 2013 kangliqiang ,kangliq@163.com
 *
 * 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.
 */
#ifndef __KPR_SEMAPHORE_H__
#define __KPR_SEMAPHORE_H__

#include "KPRTypes.h"
#include <errno.h>

namespace kpr
{

class Semaphore
{
public:
    Semaphore(long initial_count = 0);
    ~Semaphore();

	int GetValue();
    bool Wait();
    bool Wait(long timeout);

    void Release(int count = 1);

private:
    sem_t m_sem;
};
}

#endif