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add libc_mq test. 

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1092 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong 2010-11-22 09:52:37 +00:00
parent cf85a6688f
commit 7c0004b7c4
1 changed files with 144 additions and 0 deletions
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144
examples/libc/mq.c Normal file
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#include <pthread.h>
#include <mqueue.h>
#include <sys/fcntl.h>
void child(void* parameter)
{
char msg[16];
ssize_t len;
mqd_t mq;
int i;
char expect;
printf("Child here!\n");
if((mq = mq_open("Q001", O_RDONLY, 0, 0)) == -1)
{
printf("mq_open = %d\n", errno);
pthread_exit(0);
}
else printf("mq = %x\n", &mq);
for(expect = 'V'; expect <= 'Z'; ++expect)
{
memset(msg, 0, sizeof(msg));
printf("Child waiting...\n");
if((len = mq_receive(mq, msg, sizeof(msg), 0)) == -1)
{
printf("mq_receive = %d\n", errno);
pthread_exit(0);
}
else printf("GOT MESSAGE %c!\n", expect);
if(len != 8)
printf("expected len 8 got %d\n", len);
for(i = 0; i < 8; ++i)
if(msg[i] != expect)
printf("msg[%d] got %c expected %c\n", i, msg[i], expect);
}
if(mq_close(mq) == -1)
printf("mq_close failed\n");
printf("child done\n");
pthread_exit(0);
}
void send(void* parameter)
{
mqd_t mq;
char msg[8];
printf("Send here!\n");
if((mq = mq_open("Q001", O_WRONLY, 0, 0)) == -1)
{
printf("mq_open = %d\n", errno);
pthread_exit(0);
}
else printf("mq = %x\n", &mq);
/* task will be blocked waiting for message */
memset(msg, 'Z', 8);
if(mq_send(mq, msg, 8, 0) == -1)
printf("mq_send = %d\n", errno);
if(mq_close(mq) == -1)
printf("mq_close failed\n");
printf("Send done\n");
pthread_exit(0);
}
void test_thread(void* parameter)
{
struct mq_attr attr;
mqd_t mq;
char msg[8];
pthread_t pthrId;
printf("Main here!\n");
attr.mq_flags = 0;
attr.mq_maxmsg = 3;
attr.mq_msgsize = 16;
if((mq = mq_open("Q001", O_CREAT | O_RDWR, 0, &attr)) == -1)
{
printf("mq_open = %d\n", errno);
pthread_exit(0);
}
else printf("mq = %x\n", &mq);
memset(msg, 'V', 8);
if(mq_send(mq, msg, 8, 0) == -1)
printf("mq_send = %d\n", errno);
memset(msg, 'W', 8);
if(mq_send(mq, msg, 8, 0) == -1)
printf("mq_send = %d\n", errno);
memset(msg, 'X', 8);
if(mq_send(mq, msg, 8, 0) == -1)
printf("mq_send = %d\n", errno);
if(pthread_create(&pthrId, 0, &child, 0)!=0)
{
printf("pthread_create Child = %d\n", errno);
pthread_exit(0);
}
/* Should block */
printf("send Y\n");
memset(msg, 'Y', 8);
if(mq_send(mq, msg, 8, 0) == -1)
printf("mq_send = %d\n", errno);
else printf("sent Y\n");
if(pthread_create(&pthrId, 0, send, 0)!=0)
{
printf("pthread_create Send = %d\n", errno);
pthread_exit(0);
}
if(mq_close(mq) == -1)
printf("mq_close failed\n");
printf("main done\n");
pthread_exit(0);
}
#include <finsh.h>
void libc_mq()
{
rt_thread_t tid;
tid = rt_thread_create("mqtest", test_thread, RT_NULL,
2048, 20, 5);
if (tid != RT_NULL)
{
rt_thread_startup(tid);
}
}
FINSH_FUNCTION_EXPORT(libc_mq, mqueue test);