47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
|
/*
|
||
|
|
* 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 Mutex class is used to synchronise the execution of threads.
|
||
|
|
This is for example used to protect access to a shared resource.
|
||
|
|
*/
|
||
|
|
class Mutex {
|
||
|
|
public:
|
||
|
|
/** Create and Initialize a Mutex object */
|
||
|
|
Mutex(const char *name = "mutex");
|
||
|
|
~Mutex();
|
||
|
|
|
||
|
|
/** Wait until a Mutex becomes available.
|
||
|
|
@param millisec timeout value or 0 in case of no time-out. (default: WaitForever)
|
||
|
|
@return true if the mutex was acquired, false otherwise.
|
||
|
|
*/
|
||
|
|
bool lock(int32_t millisec = -1);
|
||
|
|
|
||
|
|
/** Try to lock the mutex, and return immediately
|
||
|
|
@return true if the mutex was acquired, false otherwise.
|
||
|
|
*/
|
||
|
|
bool trylock();
|
||
|
|
|
||
|
|
/** Unlock the mutex that has previously been locked by the same thread
|
||
|
|
*/
|
||
|
|
void unlock();
|
||
|
|
|
||
|
|
private:
|
||
|
|
struct rt_mutex mID;
|
||
|
|
};
|
||
|
|
|
||
|
|
}
|