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OS test: Improved error checking for sem_timedwait() from Juha Niskanen

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This commit is contained in:
Gregory Nutt 2015-02-20 07:31:59 -06:00
parent f5aac7178e
commit 6952cdf8ac
1 changed files with 36 additions and 12 deletions
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48
examples/ostest/semtimed.c
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@ -51,7 +51,7 @@
***********************************************************************/ ***********************************************************************/
#ifndef NULL #ifndef NULL
# define NULL (void*)0 # error Broken toolchain does not have NULL
#endif #endif
/*********************************************************************** /***********************************************************************
@ -66,15 +66,38 @@ static sem_t sem;
static void *poster_func(void *parameter) static void *poster_func(void *parameter)
{ {
int status;
/* Wait for one second, then post the semaphore */ /* Wait for one second, then post the semaphore */
printf("poster_func: Waiting for 1 second\n"); printf("poster_func: Waiting for 1 second\n");
sleep(1); sleep(1);
printf("poster_func: Posting\n"); printf("poster_func: Posting\n");
sem_post(&sem); status = sem_post(&sem);
if (status != OK)
{
printf("poster_func: ERROR: sem_post failed\n");
}
return NULL; return NULL;
} }
static void ostest_gettime(struct timespec *tp)
{
int status;
status = clock_gettime(CLOCK_REALTIME, tp);
if (status != OK)
{
printf("ostest_gettime: ERROR: clock_gettime failed\n");
}
else if (tp->tv_sec < 0 || tp->tv_nsec < 0 || tp->tv_nsec >= 1000*1000*1000)
{
printf("ostest_gettime: ERROR: clock_gettime returned bogus time\n");
}
}
/*********************************************************************** /***********************************************************************
* Public Functions * Public Functions
***********************************************************************/ ***********************************************************************/
@ -97,11 +120,15 @@ void semtimed_test(void)
int status; int status;
printf("semtimed_test: Initializing semaphore to 0\n"); printf("semtimed_test: Initializing semaphore to 0\n");
sem_init(&sem, 0, 0); status = sem_init(&sem, 0, 0);
if (status != OK)
{
printf("semtimed_test: ERROR: sem_init failed\n");
}
/* First, make sure that the timeout expires if the semaphore is never posted */ /* First, make sure that the timeout expires if the semaphore is never posted */
(void)clock_gettime(CLOCK_REALTIME, &before); ostest_gettime(&before);
abstime.tv_sec = before.tv_sec + 2; abstime.tv_sec = before.tv_sec + 2;
abstime.tv_nsec = before.tv_nsec; abstime.tv_nsec = before.tv_nsec;
@ -110,7 +137,7 @@ void semtimed_test(void)
status = sem_timedwait(&sem, &abstime); status = sem_timedwait(&sem, &abstime);
errcode = errno; errcode = errno;
(void)clock_gettime(CLOCK_REALTIME, &after); ostest_gettime(&after);
if (status == OK) if (status == OK)
{ {
@ -120,7 +147,7 @@ void semtimed_test(void)
{ {
if (errcode == ETIMEDOUT) if (errcode == ETIMEDOUT)
{ {
printf("samwait_test: PASS\n"); printf("semtimed_test: PASS: first test returned timeout\n");
} }
else else
{ {
@ -128,7 +155,6 @@ void semtimed_test(void)
} }
} }
(void)clock_gettime(CLOCK_REALTIME, &after);
printf("BEFORE: (%lu sec, %lu nsec)\n", printf("BEFORE: (%lu sec, %lu nsec)\n",
(unsigned long)before.tv_sec, (unsigned long)before.tv_nsec); (unsigned long)before.tv_sec, (unsigned long)before.tv_nsec);
printf("AFTER: (%lu sec, %lu nsec)\n", printf("AFTER: (%lu sec, %lu nsec)\n",
@ -159,7 +185,6 @@ void semtimed_test(void)
printf("semtimed_test: Set thread 1 priority to %d\n", sparam.sched_priority); printf("semtimed_test: Set thread 1 priority to %d\n", sparam.sched_priority);
} }
printf("semtimed_test: Starting poster thread 3\n"); printf("semtimed_test: Starting poster thread 3\n");
status = pthread_attr_init(&attr); status = pthread_attr_init(&attr);
if (status != 0) if (status != 0)
@ -188,7 +213,7 @@ void semtimed_test(void)
/* Up to two seconds for the semaphore to be posted */ /* Up to two seconds for the semaphore to be posted */
(void)clock_gettime(CLOCK_REALTIME, &before); ostest_gettime(&before);
abstime.tv_sec = before.tv_sec + 2; abstime.tv_sec = before.tv_sec + 2;
abstime.tv_nsec = before.tv_nsec; abstime.tv_nsec = before.tv_nsec;
@ -197,7 +222,7 @@ void semtimed_test(void)
status = sem_timedwait(&sem, &abstime); status = sem_timedwait(&sem, &abstime);
errcode = errno; errcode = errno;
(void)clock_gettime(CLOCK_REALTIME, &after); ostest_gettime(&after);
if (status < 0) if (status < 0)
{ {
@ -208,13 +233,11 @@ void semtimed_test(void)
printf("semtimed_test: PASS: sem_timedwait succeeded\n"); printf("semtimed_test: PASS: sem_timedwait succeeded\n");
} }
(void)clock_gettime(CLOCK_REALTIME, &after);
printf("BEFORE: (%lu sec, %lu nsec)\n", printf("BEFORE: (%lu sec, %lu nsec)\n",
(unsigned long)before.tv_sec, (unsigned long)before.tv_nsec); (unsigned long)before.tv_sec, (unsigned long)before.tv_nsec);
printf("AFTER: (%lu sec, %lu nsec)\n", printf("AFTER: (%lu sec, %lu nsec)\n",
(unsigned long)after.tv_sec, (unsigned long)after.tv_nsec); (unsigned long)after.tv_sec, (unsigned long)after.tv_nsec);
/* Clean up detritus left by the pthread */ /* Clean up detritus left by the pthread */
#ifdef SDCC #ifdef SDCC
@ -228,5 +251,6 @@ void semtimed_test(void)
pthread_join(poster_thread, NULL); pthread_join(poster_thread, NULL);
} }
#endif #endif
sem_destroy(&sem); sem_destroy(&sem);
} }