int main(void)
{
pid_t pid;
struct sigaction act;
struct timeval tv;
act.sa_sigaction = handler;
act.sa_flags = SA_SIGINFO;
sigemptyset(&act.sa_mask);
sigaction(SIGCHLD, &act, 0);
if ((pid = fork()) == 0) {
/* child */
while (1) {
/* wait forever, or until we are
interrupted by a signal */
tv.tv_sec = 0;
tv.tv_usec = 0;
select(0, NULL, NULL, NULL, &tv);
}
return 0;
} else {
/* parent */
int s;
int i;
for (i = 0; i < NUMSTOPS; i++) {
printf("--> Sending SIGSTOP\n");
notification = 0;
kill(pid, SIGSTOP);
/*
Don't let the kernel optimize away queued
SIGSTOP/SIGCONT signals.
*/
wait_for_notification(CLD_STOPPED);
printf("--> Sending SIGCONT\n");
notification = 0;
kill(pid, SIGCONT);
/*
SIGCHLD doesn't queue, make sure CLD_CONTINUED
doesn't mask the next CLD_STOPPED
*/
wait_for_notification(CLD_CONTINUED);
}
kill(pid, SIGKILL);
waitpid(pid, &s, 0);
}
if (child_stopped == NUMSTOPS && child_continued == NUMSTOPS) {
printf("Test PASSED\n");
return 0;
}
printf("Test FAILED\n");
return -1;
}
void
cmpi_client_code()
{
wait_for_notification();
notify_next();
NOTE("PROCEEDING...");
cmpi_driver* driver = driver_create();
while (! driver->quitting)
{
driver_setup_fifo(driver);
driver_process(driver);
}
NOTE("QUITTING");
}