Getting Started with QNX Neutrino - QNX Software Systems

© 2009, QNX Software Systems GmbH & Co. KG. tt1.c
}
exit (EXIT_FAILURE);
thread_pool_start (tpp);
fprintf (stderr, "%s: thread_pool_start returned; errno %s\n",
progname, strerror (errno));
sleep (3000);
exit (EXIT_FAILURE);
}
tt1.c
For more information about this program, see “Kernel timeouts with pthread_join()”
in the Clocks, Timers, and Getting a Kick Every So Often chapter.
/*
* tt1.c
*/
#include
#include
#include
#include
#include
#define SEC_NSEC 1000000000LL // 1 billion nanoseconds in a second
void *
long_thread (void *notused)
{
printf ("This thread runs for more than 10 seconds\n");
sleep (20);
}
int
main (void) // ignore arguments
{
uint64_t timeout;
struct sigevent event;
int
rval;
pthread_t thread_id;
// set up the event -- this can be done once
// This or event.sigev_notify = SIGEV_UNBLOCK:
SIGEV_UNBLOCK_INIT (&event);
// create a thread
pthread_create (&thread_id, NULL, long_thread, NULL);
// set up for 10 second timeout
timeout = 10LL * SEC_NSEC;
TimerTimeout (CLOCK_REALTIME, _NTO_TIMEOUT_JOIN, &event, &timeout, NULL);
rval = pthread_join (thread_id, NULL);
if (rval == ETIMEDOUT) {
printf ("Thread %d is still running after 10 seconds!\n",
April 30, 2009 Appendix: C • Sample Programs 323