1*10465441SEvalZero /*
2*10465441SEvalZero * 程序清单：邮箱例程_发送阻塞
3*10465441SEvalZero *
4*10465441SEvalZero * 这个程序用来测试邮箱发送时候的阻塞情况。
5*10465441SEvalZero *
6*10465441SEvalZero */
7*10465441SEvalZero #include <rtthread.h>
8*10465441SEvalZero #include "tc_comm.h"
9*10465441SEvalZero
10*10465441SEvalZero /* 指向线程控制块的指针 */
11*10465441SEvalZero static rt_thread_t tid1 = RT_NULL;
12*10465441SEvalZero static rt_thread_t tid2 = RT_NULL;
13*10465441SEvalZero
14*10465441SEvalZero /* 邮箱控制块 */
15*10465441SEvalZero static struct rt_mailbox mb;
16*10465441SEvalZero /* 用于放邮件的内存池 */
17*10465441SEvalZero static char mb_pool[32];
18*10465441SEvalZero
19*10465441SEvalZero static char mb_str1[] = "I'm a mail!";
20*10465441SEvalZero static char mb_str2[] = "this is another mail!";
21*10465441SEvalZero
22*10465441SEvalZero /* 线程1入口 */
thread1_entry(void * parameter)23*10465441SEvalZero static void thread1_entry(void* parameter)
24*10465441SEvalZero {
25*10465441SEvalZero unsigned char* str;
26*10465441SEvalZero
27*10465441SEvalZero while (1)
28*10465441SEvalZero {
29*10465441SEvalZero /* 从邮箱中收取邮件 */
30*10465441SEvalZero if (rt_mb_recv(&mb, (rt_uint32_t*)&str, RT_WAITING_FOREVER) == RT_EOK)
31*10465441SEvalZero {
32*10465441SEvalZero rt_kprintf("thread1: get a mail from mailbox, the content:%s\n", str);
33*10465441SEvalZero
34*10465441SEvalZero /* 延时20个OS Tick */
35*10465441SEvalZero rt_thread_delay(50);
36*10465441SEvalZero }
37*10465441SEvalZero }
38*10465441SEvalZero }
39*10465441SEvalZero
40*10465441SEvalZero /* 线程2入口 */
thread2_entry(void * parameter)41*10465441SEvalZero static void thread2_entry(void* parameter)
42*10465441SEvalZero {
43*10465441SEvalZero rt_uint8_t count;
44*10465441SEvalZero char *str;
45*10465441SEvalZero
46*10465441SEvalZero count = 0;
47*10465441SEvalZero while (1)
48*10465441SEvalZero {
49*10465441SEvalZero count ++;
50*10465441SEvalZero if (count & 0x1)
51*10465441SEvalZero {
52*10465441SEvalZero /* 发送mb_str1地址到邮箱中 */
53*10465441SEvalZero str = mb_str1;
54*10465441SEvalZero }
55*10465441SEvalZero else
56*10465441SEvalZero {
57*10465441SEvalZero /* 发送mb_str2地址到邮箱中 */
58*10465441SEvalZero str = mb_str2;
59*10465441SEvalZero }
60*10465441SEvalZero
61*10465441SEvalZero /* 不停的发送邮件，如果满了则等待10个tick，然后超时 */
62*10465441SEvalZero if( rt_mb_send_wait(&mb, (rt_uint32_t)str,10) == RT_EOK )
63*10465441SEvalZero rt_kprintf("thread2: sent a mail to mailbox, the content:%s\n", str);
64*10465441SEvalZero else
65*10465441SEvalZero rt_kprintf("thread2: timeout while waiting to send a mail.\n");
66*10465441SEvalZero }
67*10465441SEvalZero }
68*10465441SEvalZero
mbox_send_wait_init()69*10465441SEvalZero int mbox_send_wait_init()
70*10465441SEvalZero {
71*10465441SEvalZero /* 初始化一个mailbox */
72*10465441SEvalZero rt_mb_init(&mb,
73*10465441SEvalZero "mbt", /* 名称是mbt */
74*10465441SEvalZero &mb_pool[0], /* 邮箱用到的内存池是mb_pool */
75*10465441SEvalZero 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 */
76*10465441SEvalZero RT_IPC_FLAG_FIFO); /* 采用FIFO方式进行线程等待 */
77*10465441SEvalZero
78*10465441SEvalZero /* 创建线程1 */
79*10465441SEvalZero tid1 = rt_thread_create("t1",
80*10465441SEvalZero thread1_entry, RT_NULL, /* 线程入口是thread1_entry, 入口参数是RT_NULL */
81*10465441SEvalZero THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
82*10465441SEvalZero if (tid1 != RT_NULL)
83*10465441SEvalZero rt_thread_startup(tid1);
84*10465441SEvalZero else
85*10465441SEvalZero tc_stat(TC_STAT_END | TC_STAT_FAILED);
86*10465441SEvalZero
87*10465441SEvalZero /* 创建线程2 */
88*10465441SEvalZero tid2 = rt_thread_create("t2",
89*10465441SEvalZero thread2_entry, RT_NULL, /* 线程入口是thread2_entry, 入口参数是RT_NULL */
90*10465441SEvalZero THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
91*10465441SEvalZero if (tid2 != RT_NULL)
92*10465441SEvalZero rt_thread_startup(tid2);
93*10465441SEvalZero else
94*10465441SEvalZero tc_stat(TC_STAT_END | TC_STAT_FAILED);
95*10465441SEvalZero
96*10465441SEvalZero return 0;
97*10465441SEvalZero }
98*10465441SEvalZero
99*10465441SEvalZero #ifdef RT_USING_TC
_tc_cleanup()100*10465441SEvalZero static void _tc_cleanup()
101*10465441SEvalZero {
102*10465441SEvalZero /* 调度器上锁，上锁后，将不再切换到其他线程，仅响应中断 */
103*10465441SEvalZero rt_enter_critical();
104*10465441SEvalZero
105*10465441SEvalZero /* 删除线程 */
106*10465441SEvalZero if (tid1 != RT_NULL && tid1->stat != RT_THREAD_CLOSE)
107*10465441SEvalZero rt_thread_delete(tid1);
108*10465441SEvalZero if (tid2 != RT_NULL && tid2->stat != RT_THREAD_CLOSE)
109*10465441SEvalZero rt_thread_delete(tid2);
110*10465441SEvalZero
111*10465441SEvalZero /* 执行邮箱对象脱离 */
112*10465441SEvalZero rt_mb_detach(&mb);
113*10465441SEvalZero
114*10465441SEvalZero /* 调度器解锁 */
115*10465441SEvalZero rt_exit_critical();
116*10465441SEvalZero
117*10465441SEvalZero /* 设置TestCase状态 */
118*10465441SEvalZero tc_done(TC_STAT_PASSED);
119*10465441SEvalZero }
120*10465441SEvalZero
_tc_mbox_send_wait()121*10465441SEvalZero int _tc_mbox_send_wait()
122*10465441SEvalZero {
123*10465441SEvalZero /* 设置TestCase清理回调函数 */
124*10465441SEvalZero tc_cleanup(_tc_cleanup);
125*10465441SEvalZero mbox_send_wait_init();
126*10465441SEvalZero
127*10465441SEvalZero /* 返回TestCase运行的最长时间 */
128*10465441SEvalZero return 300;
129*10465441SEvalZero }
130*10465441SEvalZero /* 输出函数命令到finsh shell中 */
131*10465441SEvalZero FINSH_FUNCTION_EXPORT(_tc_mbox_send_wait, a example of mailbox send wait);
132*10465441SEvalZero #else
133*10465441SEvalZero /* 用户应用入口 */
rt_application_init()134*10465441SEvalZero int rt_application_init()
135*10465441SEvalZero {
136*10465441SEvalZero mbox_send_wait_init();
137*10465441SEvalZero
138*10465441SEvalZero return 0;
139*10465441SEvalZero }
140*10465441SEvalZero #endif
141*10465441SEvalZero
142