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/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2016/10/1 Bernard The first version
*/
#pragma once
#include <stdint.h>
#include <rtthread.h>
namespace rtthread {
/** The Semaphore class is used to manage and protect access to a set of shared resources. */
class Semaphore
{
public:
/** Create and Initialize a Semaphore object used for managing resources.
@param number of available resources; maximum index value is (count-1).
*/
Semaphore(const char *name = "sem", int32_t count = 0);
~Semaphore();
/** Wait until a Semaphore resource becomes available.
@param millisec timeout value or 0 in case of no time-out.
@return true on success.
*/
bool wait(int32_t millisec = -1);
/** Release a Semaphore resource that was obtain with Semaphore::wait.
*/
void release(void);
private:
struct rt_semaphore mID;
};
}
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