call pthread_join() or pthread_detach() for every thread

http://java.icmc.usp.br/resources/books/ibm_pthreads/users-16.htm

pthread_detach()--Detach a Thread

#include <pthread.h>
int pthread_detach(pthread_t thread);
Threadsafe: Yes
Signal Safe: No

Parameters

Authorities and Locks

Return Value

Error Conditions

Related Information

Example

#define _MULTI_THREADED
#include <pthread.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include "check.h"
void *threadfunc(void *parm)
{
printf("Inside secondary thread\n");
return NULL;
}
int main(int argc, char **argv)
{
pthread_t             thread;
int                   rc=0;
printf("Enter Testcase - %s\n", argv[0]);
printf("Create thread using attributes that allow join or detach\n");
rc = pthread_create(&thread, NULL, threadfunc, NULL);
checkResults("pthread_create()\n", rc);
sleep(5);
printf("Detach the thread after it terminates\n");
rc = pthread_detach(thread);
checkResults("pthread_detach()\n", rc);
printf("Detach the thread again (expect ESRCH)\n");
rc = pthread_detach(thread);
if (rc != ESRCH) {
printf("Got an unexpected result! rc=%d\n",
rc);
exit(1);
}
printf("Second detach fails correctly\n");
/* sleep() isn't a very robust way to wait for the thread */
sleep(5);
printf("Main completed\n");
return 0;
}

Enter Testcase - QP0WTEST/TPDET0
Create thread using attributes that allow join or detach
Inside secondary thread
Detach the thread after it terminates
Detach the thread again (expect ESRCH)
Second detach fails correctly
Main completed