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add more thread example and Chinese comments.

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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@519 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong
2010-03-20 15:15:54 +00:00
parent dd7cbec8d9
commit 911d179125
8 changed files with 532 additions and 45 deletions
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examples/kernel/thread_delete.c
+37 -8
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@@ -1,43 +1,72 @@
/*
* 程序清单：删除线程
*
* 这个例子会创建两个线程，在其中一个线程中删除另外一个线程。
*/
#include <rtthread.h>
#include "tc_comm.h"
/*
* This is an example for dynamic thread
* 线程删除(rt_thread_delete)函数仅适合于动态线程，为了在一个线程
* 中访问另一个线程的控制块，所以把线程块指针声明成全局类型以供全
* 局访问
*/
static rt_thread_t tid1 = RT_NULL, tid2 = RT_NULL;
/* 线程1的入口函数 */
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的入口函数 */
static void thread2_entry(void* parameter)
{
/* 线程2拥有较高的优先级，以抢占线程1而获得执行 */
/* 线程2启动后先睡眠10个OS Tick */
rt_thread_delay(10);
/*
* 线程2唤醒后直接删除线程1，删除线程1后，线程1自动脱离就绪线程
* 队列
*/
rt_thread_delete(tid1);
/* delay thread2 to switch to idle thread */
/*
* 线程2继续休眠10个OS Tick然后退出，线程2休眠后应切换到idle线程
* idle线程将执行真正的线程1控制块和线程栈的删除
*/
rt_thread_delay(10);
/*
* 线程2运行结束后也将自动被删除(线程控制块和线程栈依然在idle线
* 程中释放)
*/
}
/* 线程删除示例的初始化 */
int thread_delete_init()
{
tid1 = rt_thread_create("t1",
thread1_entry, (void*)1,
/* 创建线程1 */
tid1 = rt_thread_create("t1", /* 线程1的名称是t1 */
thread1_entry, RT_NULL, /* 入口时thread1_entry，参数是RT_NULL */
THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
if (tid1 != RT_NULL)
if (tid1 != RT_NULL) /* 如果获得线程控制块，启动这个线程 */
rt_thread_startup(tid1);
else
tc_stat(TC_STAT_END | TC_STAT_FAILED);
tid2 = rt_thread_create("t2",
thread2_entry, (void*)2,
/* 创建线程1 */
tid2 = rt_thread_create("t2", /* 线程1的名称是t2 */
thread2_entry, RT_NULL, /* 入口时thread2_entry，参数是RT_NULL */
THREAD_STACK_SIZE, THREAD_PRIORITY - 1, THREAD_TIMESLICE);
if (tid2 != RT_NULL)
if (tid2 != RT_NULL) /* 如果获得线程控制块，启动这个线程 */
rt_thread_startup(tid2);
else
tc_stat(TC_STAT_END | TC_STAT_FAILED);