43 lines
1007 B
C
43 lines
1007 B
C
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/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2016/10/1 Bernard The first version
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*/
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#pragma once
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#include <stdint.h>
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#include <rtthread.h>
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namespace rtthread {
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/** The Semaphore class is used to manage and protect access to a set of shared resources. */
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class Semaphore
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{
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public:
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/** Create and Initialize a Semaphore object used for managing resources.
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@param number of available resources; maximum index value is (count-1).
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*/
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Semaphore(const char *name = "sem", int32_t count = 0);
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~Semaphore();
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/** Wait until a Semaphore resource becomes available.
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@param millisec timeout value or 0 in case of no time-out.
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@return true on success.
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*/
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bool wait(int32_t millisec = -1);
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/** Release a Semaphore resource that was obtain with Semaphore::wait.
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*/
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void release(void);
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private:
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struct rt_semaphore mID;
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};
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}
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