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/*
* File: tsd1.c
*
* Test Synopsis:
* - Thread Specific Data (TSD) key creation and destruction.
*
* Description:
* -
*
* Test Method (validation or falsification):
* - validation
*
* Requirements Tested:
* - keys are created for each existing thread including the main thread
* - keys are created for newly created threads
* - keys are thread specific
* - destroy routine is called on each thread exit including the main thread
*
* Features Tested:
* -
*
* Cases Tested:
* -
*
* Environment:
* -
*
* Input:
* - none
*
* Output:
* - text to stdout
*
* Assumptions:
* - already validated: pthread_create()
* pthread_once()
* - main thread also has a POSIX thread identity
*
* Pass Criteria:
* - stdout matches file reference/tsd1.out
*
* Fail Criteria:
* - fails to match file reference/tsd1.out
* - output identifies failed component
*/
#include <pthread.h>
#include <stdio.h>
pthread_key_t key = NULL;
pthread_once_t key_once = PTHREAD_ONCE_INIT;
void
destroy_key(void * arg)
{
/* arg is not NULL if we get to here. */
printf("SUCCESS: %s: destroying key.\n", (char *) arg);
free((char *) arg);
}
void
make_key(void)
{
if (pthread_key_create(&key, destroy_key) != 0)
{
printf("Key create failed\n");
exit(1);
}
}
void
setkey(void * arg)
{
void * ptr;
if ((ptr = pthread_getspecific(key)) != NULL)
{
printf("ERROR: Thread %d, Key not initialised to NULL\n",
(int) arg);
exit(1);
}
else
{
ptr = (void *) malloc(80);
sprintf((char *) ptr, "Thread %d Key",
(int) arg);
(void) pthread_setspecific(key, ptr);
}
if ((ptr = pthread_getspecific(key)) == NULL)
{
printf("FAILED: Thread %d Key value set or get failed.\n",
(int) arg);
exit(1);
}
else
{
printf("SUCCESS: Thread %d Key value set and get succeeded.\n",
(int) arg);
printf("SUCCESS: %s: exiting thread.\n", (char *) ptr);
}
}
void *
mythread(void * arg)
{
while (key == NULL)
{
}
printf("Thread %d, Key created\n", (int) arg);
setkey(arg);
return 0;
/* Exiting the thread will call the key destructor. */
}
int
main()
{
int rc;
int t;
pthread_t thread[10];
for (t = 0; t < 5; t++)
{
rc = pthread_create(&thread[t], NULL, mythread, (void *) (t + 1));
printf("pthread_create returned %d\n", rc);
}
(void) pthread_once(&key_once, make_key);
/* Test main thread key. */
setkey((void *) 0);
Sleep(500);
for (t = 5; t < 10; t++)
{
rc = pthread_create(&thread[t], NULL, mythread, (void *) (t + 1));
printf("pthread_create returned %d\n", rc);
}
Sleep(2000);
return 0;
}
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