142 lines
3.6 KiB
C
142 lines
3.6 KiB
C
/*
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* 程序清单：邮箱例程_发送阻塞
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*
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* 这个程序用来测试邮箱发送时候的阻塞情况。
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*
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*/
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#include <rtthread.h>
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#include "tc_comm.h"
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/* 指向线程控制块的指针 */
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static rt_thread_t tid1 = RT_NULL;
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static rt_thread_t tid2 = RT_NULL;
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/* 邮箱控制块 */
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static struct rt_mailbox mb;
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/* 用于放邮件的内存池 */
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static char mb_pool[32];
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static char mb_str1[] = "I'm a mail!";
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static char mb_str2[] = "this is another mail!";
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/* 线程1入口 */
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static void thread1_entry(void* parameter)
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{
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unsigned char* str;
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while (1)
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{
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/* 从邮箱中收取邮件 */
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if (rt_mb_recv(&mb, (rt_uint32_t*)&str, RT_WAITING_FOREVER) == RT_EOK)
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{
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rt_kprintf("thread1: get a mail from mailbox, the content:%s\n", str);
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/* 延时20个OS Tick */
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rt_thread_delay(50);
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}
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}
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}
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/* 线程2入口 */
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static void thread2_entry(void* parameter)
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{
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rt_uint8_t count;
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char *str;
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count = 0;
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while (1)
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{
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count ++;
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if (count & 0x1)
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{
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/* 发送mb_str1地址到邮箱中 */
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str = mb_str1;
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}
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else
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{
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/* 发送mb_str2地址到邮箱中 */
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str = mb_str2;
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}
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/* 不停的发送邮件，如果满了则等待10个tick，然后超时 */
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if( rt_mb_send_wait(&mb, (rt_uint32_t)str,10) == RT_EOK )
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rt_kprintf("thread2: sent a mail to mailbox, the content:%s\n", str);
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else
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rt_kprintf("thread2: timeout while waiting to send a mail.\n");
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}
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}
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int mbox_send_wait_init()
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{
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/* 初始化一个mailbox */
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rt_mb_init(&mb,
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"mbt", /* 名称是mbt */
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&mb_pool[0], /* 邮箱用到的内存池是mb_pool */
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sizeof(mb_pool)/4, /* 大小是mb_pool大小除以4，因为一封邮件的大小是4字节 */
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RT_IPC_FLAG_FIFO); /* 采用FIFO方式进行线程等待 */
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/* 创建线程1 */
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tid1 = rt_thread_create("t1",
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thread1_entry, RT_NULL, /* 线程入口是thread1_entry, 入口参数是RT_NULL */
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THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
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if (tid1 != RT_NULL)
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rt_thread_startup(tid1);
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else
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tc_stat(TC_STAT_END | TC_STAT_FAILED);
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/* 创建线程2 */
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tid2 = rt_thread_create("t2",
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thread2_entry, RT_NULL, /* 线程入口是thread2_entry, 入口参数是RT_NULL */
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THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
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if (tid2 != RT_NULL)
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rt_thread_startup(tid2);
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else
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tc_stat(TC_STAT_END | TC_STAT_FAILED);
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return 0;
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}
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#ifdef RT_USING_TC
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static void _tc_cleanup()
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{
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/* 调度器上锁，上锁后，将不再切换到其他线程，仅响应中断 */
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rt_enter_critical();
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/* 删除线程 */
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if (tid1 != RT_NULL && tid1->stat != RT_THREAD_CLOSE)
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rt_thread_delete(tid1);
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if (tid2 != RT_NULL && tid2->stat != RT_THREAD_CLOSE)
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rt_thread_delete(tid2);
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/* 执行邮箱对象脱离 */
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rt_mb_detach(&mb);
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/* 调度器解锁 */
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rt_exit_critical();
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/* 设置TestCase状态 */
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tc_done(TC_STAT_PASSED);
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}
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int _tc_mbox_send_wait()
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{
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/* 设置TestCase清理回调函数 */
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tc_cleanup(_tc_cleanup);
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mbox_send_wait_init();
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/* 返回TestCase运行的最长时间 */
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return 300;
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}
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/* 输出函数命令到finsh shell中 */
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FINSH_FUNCTION_EXPORT(_tc_mbox_send_wait, a example of mailbox send wait);
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#else
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/* 用户应用入口 */
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int rt_application_init()
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{
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mbox_send_wait_init();
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return 0;
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}
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#endif
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