1 /* 2 * Copyright (c) 2006-2018, RT-Thread Development Team 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 * 6 * Change Logs: 7 * Date Author Notes 8 */ 9 #include "Semaphore.h" 10 11 using namespace rtthread; 12 13 Semaphore::Semaphore(const char *name, int32_t count) 14 { 15 rt_sem_init(&mID, name, count, RT_IPC_FLAG_FIFO); 16 } 17 18 bool Semaphore::wait(int32_t millisec) 19 { 20 rt_int32_t tick; 21 22 if (millisec < 0) 23 tick = -1; 24 else 25 tick = rt_tick_from_millisecond(millisec); 26 27 return rt_sem_take(&mID, tick) == RT_EOK; 28 } 29 30 void Semaphore::release(void) 31 { 32 rt_sem_release(&mID); 33 } 34 35 Semaphore::~Semaphore() 36 { 37 rt_sem_detach(&mID); 38 } 39