diff options
| author | bernard.xiong <[email protected]> | 2010-03-20 15:15:54 +0000 |
|---|---|---|
| committer | bernard.xiong <[email protected]> | 2010-03-20 15:15:54 +0000 |
| commit | 911d17912560a274f1faef33a09882406ab5190a (patch) | |
| tree | f330f3b0ba74d701cf8cc913ee231ce0e108b039 /examples/kernel/thread_suspend.c | |
| parent | dd7cbec8d9f5e405b429dd1e76bd352022d9a0fa (diff) | |
add more thread example and Chinese comments.
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@519 bbd45198-f89e-11dd-88c7-29a3b14d5316
Diffstat (limited to 'examples/kernel/thread_suspend.c')
| -rw-r--r-- | examples/kernel/thread_suspend.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/examples/kernel/thread_suspend.c b/examples/kernel/thread_suspend.c new file mode 100644 index 0000000000..2be237a2a5 --- /dev/null +++ b/examples/kernel/thread_suspend.c @@ -0,0 +1,100 @@ +/*
+ * 程序清单：挂起线程
+ *
+ * 这个例子中将创建两个动态线程，高优先级线程将在一定时刻后挂起低优先级线程。
+ */
+#include <rtthread.h>
+#include "tc_comm.h"
+
+/* 指向线程控制块的指针 */
+static rt_thread_t tid1 = RT_NULL;
+static rt_thread_t tid2 = RT_NULL;
+/* 线程1入口 */
+static void thread1_entry(void* parameter)
+{
+ rt_uint32_t count = 0;
+
+ while (1)
+ {
+ /* 线程1采用低优先级运行，一直打印计数值 */
+ rt_kprintf("thread count: %d\n", count ++);
+ }
+}
+
+/* 线程2入口 */
+static void thread2_entry(void* parameter)
+{
+ /* 延时10个OS Tick */
+ rt_thread_delay(10);
+
+ /* 挂起线程1 */
+ rt_thread_suspend(tid1);
+
+ /* 延时10个OS Tick */
+ rt_thread_delay(10);
+
+ /* 线程2自动退出 */
+}
+
+int thread_suspend_init()
+{
+ /* 创建线程1 */
+ tid1 = rt_thread_create("thread",
+ thread1_entry, RT_NULL, /* 线程入口是thread1_entry, 入口参数是RT_NULL */
+ THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
+ if (tid1 != RT_NULL)
+ rt_thread_startup(tid1);
+ else
+ tc_stat(TC_STAT_END | TC_STAT_FAILED);
+
+ /* 创建线程2 */
+ tid2 = rt_thread_create("thread",
+ thread2_entry, RT_NULL, /* 线程入口是thread2_entry, 入口参数是RT_NULL */
+ THREAD_STACK_SIZE, THREAD_PRIORITY - 1, THREAD_TIMESLICE);
+ if (tid2 != RT_NULL)
+ rt_thread_startup(tid2);
+ 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();
+
+ /* 删除线程 */
+ if (tid1 != RT_NULL && tid1->stat != RT_THREAD_CLOSE)
+ rt_thread_delete(tid1);
+ if (tid2 != RT_NULL && tid2->stat != RT_THREAD_CLOSE)
+ rt_thread_delete(tid2);
+
+ /* 调度器解锁 */
+ rt_exit_critical();
+
+ /* 设置TestCase状态 */
+ tc_done(TC_STAT_PASSED);
+}
+
+int _tc_thread_suspend()
+{
+ /* 设置TestCase清理回调函数 */
+ tc_cleanup(_tc_cleanup);
+ thread_suspend_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_thread_suspend, a thread suspend example);
+#else
+/* 用户应用入口 */
+int rt_application_init()
+{
+ thread_suspend_init();
+
+ return 0;
+}
+#endif
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