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Diffstat (limited to 'examples/kernel/semaphore_dynamic.c')
| -rw-r--r-- | examples/kernel/semaphore_dynamic.c | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/examples/kernel/semaphore_dynamic.c b/examples/kernel/semaphore_dynamic.c deleted file mode 100644 index dacdf10c37..0000000000 --- a/examples/kernel/semaphore_dynamic.c +++ /dev/null @@ -1,144 +0,0 @@ -/* - * Copyright (c) 2006-2021, RT-Thread Development Team - * - * SPDX-License-Identifier: Apache-2.0 - * - * Change Logs: - * - */ - -/* - * 程序清单:动态信号量 - * - * 这个例子中将创建一个动态信号量(初始值为0 )及一个动态线程,在这个动态线程中 - * 将试图采用超时方式去持有信号量,应该超时返回。然后这个线程释放一次信号量,并 - * 在后面继续采用永久等待方式去持有信号量, 成功获得信号量后返回。 - */ -#include <rtthread.h> -#include "tc_comm.h" - -/* 指向线程控制块的指针 */ -static rt_thread_t tid = RT_NULL; -/* 指向信号量的指针 */ -static rt_sem_t sem = RT_NULL; -/* 线程入口 */ -static void thread_entry(void* parameter) -{ - rt_err_t result; - rt_tick_t tick; - - /* 获得当前的OS Tick */ - tick = rt_tick_get(); - - /* 试图持有一个信号量,如果10个OS Tick依然没拿到,则超时返回 */ - result = rt_sem_take(sem, 10); - if (result == -RT_ETIMEOUT) - { - rt_tick_t new_tick = rt_tick_get(); - /* 可以有两个 tick 的误差 */ - if (new_tick - tick >= 12) - { - rt_kprintf("tick error to large: expect: 10, get %d\n", - new_tick - tick); - - /* 如果失败,则测试失败 */ - tc_done(TC_STAT_FAILED); - rt_sem_delete(sem); - return; - } - rt_kprintf("take semaphore timeout\n"); - } - else - { - /* 因为并没释放信号量,应该是超时返回,否则测试失败 */ - tc_done(TC_STAT_FAILED); - rt_sem_delete(sem); - return; - } - - /* 释放一次信号量 */ - rt_sem_release(sem); - - /* 继续持有信号量,并永远等待直到持有到信号量 */ - result = rt_sem_take(sem, RT_WAITING_FOREVER); - if (result != RT_EOK) - { - /* 返回不正确,测试失败 */ - tc_done(TC_STAT_FAILED); - rt_sem_delete(sem); - return; - } - - /* 测试成功 */ - tc_done(TC_STAT_PASSED); - /* 删除信号量 */ - rt_sem_delete(sem); -} - -int semaphore_dynamic_init() -{ - /* 创建一个信号量,初始值是0 */ - sem = rt_sem_create("sem", 0, RT_IPC_FLAG_PRIO); - if (sem == RT_NULL) - { - tc_stat(TC_STAT_END | TC_STAT_FAILED); - return 0; - } - - /* 创建线程 */ - tid = rt_thread_create("thread", - thread_entry, RT_NULL, /* 线程入口是thread_entry, 入口参数是RT_NULL */ - THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE); - if (tid != RT_NULL) - rt_thread_startup(tid); - else - tc_stat(TC_STAT_END | TC_STAT_FAILED); - - return 0; -} - -#ifdef RT_USING_TC -static void _tc_cleanup() -{ - /* 调度器上锁,上锁后,将不再切换到其他线程,仅响应中断 */ - rt_enter_critical(); - - if (sem) - { - rt_sem_delete(sem); - sem = RT_NULL; - } - - /* 删除线程 */ - if (tid != RT_NULL && tid->stat != RT_THREAD_CLOSE) - { - rt_thread_delete(tid); - } - - /* 调度器解锁 */ - rt_exit_critical(); - - /* 设置TestCase状态 */ - tc_done(TC_STAT_PASSED); -} - -int _tc_semaphore_dynamic() -{ - /* 设置TestCase清理回调函数 */ - tc_cleanup(_tc_cleanup); - semaphore_dynamic_init(); - - /* 返回TestCase运行的最长时间 */ - return 100; -} -/* 输出函数命令到finsh shell中 */ -FINSH_FUNCTION_EXPORT(_tc_semaphore_dynamic, a dynamic semaphore example); -#else -/* 用户应用入口 */ -int rt_application_init() -{ - semaphore_dynamic_init(); - - return 0; -} -#endif |
