blob: e0dbeb158a8c41e545922341296ff2d2c2899876 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
*/
#include "cxx_semaphore.h"
using namespace rtthread;
/**
* @brief Semaphore class constructor.
* @param name Semaphore name
* @param count Initial semaphore count
*/
Semaphore::Semaphore(const char *name, int32_t count)
{
rt_sem_init(&mID, name, count, RT_IPC_FLAG_FIFO);
}
/**
* @brief Wait on the semaphore.
* @param millisec Timeout in milliseconds (-1 for infinite wait).
* @return true if the semaphore was successfully taken, false on timeout.
*/
bool Semaphore::wait(int32_t millisec)
{
rt_int32_t tick;
if (millisec < 0)
tick = -1;
else
tick = rt_tick_from_millisecond(millisec);
return rt_sem_take(&mID, tick) == RT_EOK;
}
/**
* @brief Release the semaphore.
*/
void Semaphore::release(void)
{
rt_sem_release(&mID);
}
/**
* @brief Detach the semaphore when the object is destroyed.
*/
Semaphore::~Semaphore()
{
rt_sem_detach(&mID);
}
|
