1 /* 2 * 程序清单：唤醒线程 3 * 4 * 这个例子中将创建两个动态线程，低优先级线程将挂起自身，然后 5 * 高优先级线程将在一定时刻后唤醒低优先级线程。 6 */ 7 #include <rtthread.h> 8 #include "tc_comm.h" 9 10 /* 指向线程控制块的指针 */ 11 static rt_thread_t tid1 = RT_NULL; 12 static rt_thread_t tid2 = RT_NULL; 13 /* 线程1入口 */ 14 static void thread1_entry(void* parameter) 15 { 16 /* 低优先级线程1开始运行 */ 17 rt_kprintf("thread1 startup%d\n"); 18 19 /* 挂起自身 */ 20 rt_kprintf("suspend thread self\n"); 21 rt_thread_suspend(tid1); 22 /* 主动执行线程调度 */ 23 rt_schedule(); 24 25 /* 当线程1被唤醒时 */ 26 rt_kprintf("thread1 resumed\n"); 27 } 28 static void thread_cleanup(rt_thread_t tid) 29 { 30 if (tid == tid1) 31 { 32 tid1 = RT_NULL; 33 } 34 if (tid == tid2) 35 { 36 tid = RT_NULL; 37 } 38 } 39 40 /* 线程2入口 */ 41 static void thread2_entry(void* parameter) 42 { 43 /* 延时10个OS Tick */ 44 rt_thread_delay(10); 45 46 /* 唤醒线程1 */ 47 rt_thread_resume(tid1); 48 rt_kprintf("thread2: to resume thread1\n"); 49 50 /* 延时10个OS Tick */ 51 rt_thread_delay(10); 52 53 /* 线程2自动退出 */ 54 } 55 56 int thread_resume_init() 57 { 58 /* 创建线程1 */ 59 tid1 = rt_thread_create("thread", 60 thread1_entry, RT_NULL, /* 线程入口是thread1_entry, 入口参数是RT_NULL */ 61 THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE); 62 if (tid1 != RT_NULL) 63 { 64 tid1->cleanup = thread_cleanup; 65 rt_thread_startup(tid1); 66 } 67 else 68 tc_stat(TC_STAT_END | TC_STAT_FAILED); 69 70 /* 创建线程2 */ 71 tid2 = rt_thread_create("thread", 72 thread2_entry, RT_NULL, /* 线程入口是thread2_entry, 入口参数是RT_NULL */ 73 THREAD_STACK_SIZE, THREAD_PRIORITY - 1, THREAD_TIMESLICE); 74 if (tid2 != RT_NULL) 75 { 76 tid2->cleanup = thread_cleanup; 77 rt_thread_startup(tid2); 78 } 79 else 80 tc_stat(TC_STAT_END | TC_STAT_FAILED); 81 82 return 0; 83 } 84 85 #ifdef RT_USING_TC 86 static void _tc_cleanup() 87 { 88 /* 调度器上锁，上锁后，将不再切换到其他线程，仅响应中断 */ 89 rt_enter_critical(); 90 91 /* 删除线程 */ 92 if (tid1 != RT_NULL && tid1->stat != RT_THREAD_CLOSE) 93 rt_thread_delete(tid1); 94 if (tid2 != RT_NULL && tid2->stat != RT_THREAD_CLOSE) 95 rt_thread_delete(tid2); 96 97 /* 调度器解锁 */ 98 rt_exit_critical(); 99 100 /* 设置TestCase状态 */ 101 tc_done(TC_STAT_PASSED); 102 } 103 104 int _tc_thread_resume() 105 { 106 /* 设置TestCase清理回调函数 */ 107 tc_cleanup(_tc_cleanup); 108 thread_resume_init(); 109 110 /* 返回TestCase运行的最长时间 */ 111 return 25; 112 } 113 /* 输出函数命令到finsh shell中 */ 114 FINSH_FUNCTION_EXPORT(_tc_thread_resume, a thread resume example); 115 #else 116 /* 用户应用入口 */ 117 int rt_application_init() 118 { 119 thread_resume_init(); 120 121 return 0; 122 } 123 #endif 124