1*10465441SEvalZero /*
2*10465441SEvalZero * 程序清单：邮箱例程
3*10465441SEvalZero *
4*10465441SEvalZero * 这个程序会创建2个动态线程，一个静态的邮箱对象，其中一个线程往邮箱中发送邮件，
5*10465441SEvalZero * 一个线程往邮箱中收取邮件。
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[128];
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 rt_kprintf("thread1: try to recv a mail\n");
30*10465441SEvalZero
31*10465441SEvalZero /* 从邮箱中收取邮件 */
32*10465441SEvalZero if (rt_mb_recv(&mb, (rt_uint32_t*)&str, RT_WAITING_FOREVER) == RT_EOK)
33*10465441SEvalZero {
34*10465441SEvalZero rt_kprintf("thread1: get a mail from mailbox, the content:%s\n", str);
35*10465441SEvalZero
36*10465441SEvalZero /* 延时10个OS Tick */
37*10465441SEvalZero rt_thread_delay(10);
38*10465441SEvalZero }
39*10465441SEvalZero }
40*10465441SEvalZero }
41*10465441SEvalZero
42*10465441SEvalZero /* 线程2入口 */
thread2_entry(void * parameter)43*10465441SEvalZero static void thread2_entry(void* parameter)
44*10465441SEvalZero {
45*10465441SEvalZero rt_uint8_t count;
46*10465441SEvalZero
47*10465441SEvalZero count = 0;
48*10465441SEvalZero while (1)
49*10465441SEvalZero {
50*10465441SEvalZero count ++;
51*10465441SEvalZero if (count & 0x1)
52*10465441SEvalZero {
53*10465441SEvalZero /* 发送mb_str1地址到邮箱中 */
54*10465441SEvalZero rt_mb_send(&mb, (rt_uint32_t)&mb_str1[0]);
55*10465441SEvalZero }
56*10465441SEvalZero else
57*10465441SEvalZero {
58*10465441SEvalZero /* 发送mb_str2地址到邮箱中 */
59*10465441SEvalZero rt_mb_send(&mb, (rt_uint32_t)&mb_str2[0]);
60*10465441SEvalZero }
61*10465441SEvalZero
62*10465441SEvalZero /* 延时20个OS Tick */
63*10465441SEvalZero rt_thread_delay(20);
64*10465441SEvalZero }
65*10465441SEvalZero }
66*10465441SEvalZero
mbox_simple_init()67*10465441SEvalZero int mbox_simple_init()
68*10465441SEvalZero {
69*10465441SEvalZero /* 初始化一个mailbox */
70*10465441SEvalZero rt_mb_init(&mb,
71*10465441SEvalZero "mbt", /* 名称是mbt */
72*10465441SEvalZero &mb_pool[0], /* 邮箱用到的内存池是mb_pool */
73*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 */
74*10465441SEvalZero RT_IPC_FLAG_FIFO); /* 采用FIFO方式进行线程等待 */
75*10465441SEvalZero
76*10465441SEvalZero /* 创建线程1 */
77*10465441SEvalZero tid1 = rt_thread_create("t1",
78*10465441SEvalZero thread1_entry, RT_NULL, /* 线程入口是thread1_entry, 入口参数是RT_NULL */
79*10465441SEvalZero THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
80*10465441SEvalZero if (tid1 != RT_NULL)
81*10465441SEvalZero rt_thread_startup(tid1);
82*10465441SEvalZero else
83*10465441SEvalZero tc_stat(TC_STAT_END | TC_STAT_FAILED);
84*10465441SEvalZero
85*10465441SEvalZero /* 创建线程2 */
86*10465441SEvalZero tid2 = rt_thread_create("t2",
87*10465441SEvalZero thread2_entry, RT_NULL, /* 线程入口是thread2_entry, 入口参数是RT_NULL */
88*10465441SEvalZero THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
89*10465441SEvalZero if (tid2 != RT_NULL)
90*10465441SEvalZero rt_thread_startup(tid2);
91*10465441SEvalZero else
92*10465441SEvalZero tc_stat(TC_STAT_END | TC_STAT_FAILED);
93*10465441SEvalZero
94*10465441SEvalZero return 0;
95*10465441SEvalZero }
96*10465441SEvalZero
97*10465441SEvalZero #ifdef RT_USING_TC
_tc_cleanup()98*10465441SEvalZero static void _tc_cleanup()
99*10465441SEvalZero {
100*10465441SEvalZero /* 调度器上锁，上锁后，将不再切换到其他线程，仅响应中断 */
101*10465441SEvalZero rt_enter_critical();
102*10465441SEvalZero
103*10465441SEvalZero /* 删除线程 */
104*10465441SEvalZero if (tid1 != RT_NULL && tid1->stat != RT_THREAD_CLOSE)
105*10465441SEvalZero rt_thread_delete(tid1);
106*10465441SEvalZero if (tid2 != RT_NULL && tid2->stat != RT_THREAD_CLOSE)
107*10465441SEvalZero rt_thread_delete(tid2);
108*10465441SEvalZero
109*10465441SEvalZero /* 执行邮箱对象脱离 */
110*10465441SEvalZero rt_mb_detach(&mb);
111*10465441SEvalZero
112*10465441SEvalZero /* 调度器解锁 */
113*10465441SEvalZero rt_exit_critical();
114*10465441SEvalZero
115*10465441SEvalZero /* 设置TestCase状态 */
116*10465441SEvalZero tc_done(TC_STAT_PASSED);
117*10465441SEvalZero }
118*10465441SEvalZero
_tc_mbox_simple()119*10465441SEvalZero int _tc_mbox_simple()
120*10465441SEvalZero {
121*10465441SEvalZero /* 设置TestCase清理回调函数 */
122*10465441SEvalZero tc_cleanup(_tc_cleanup);
123*10465441SEvalZero mbox_simple_init();
124*10465441SEvalZero
125*10465441SEvalZero /* 返回TestCase运行的最长时间 */
126*10465441SEvalZero return 100;
127*10465441SEvalZero }
128*10465441SEvalZero /* 输出函数命令到finsh shell中 */
129*10465441SEvalZero FINSH_FUNCTION_EXPORT(_tc_mbox_simple, a simple mailbox example);
130*10465441SEvalZero #else
131*10465441SEvalZero /* 用户应用入口 */
rt_application_init()132*10465441SEvalZero int rt_application_init()
133*10465441SEvalZero {
134*10465441SEvalZero mbox_simple_init();
135*10465441SEvalZero
136*10465441SEvalZero return 0;
137*10465441SEvalZero }
138*10465441SEvalZero #endif
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