1#!../../php -q 2<? 3 4declare(ticks=1); 5 6function alarm_handle($signal){ 7 if ($signal==SIGALRM) print "Child: Caught SIGALRM!!!\n"; 8} 9 10function usr1_handle($signal){ 11 if ($signal==SIGUSR1) print "Child: Caught SIGUSR1!!!\n"; 12} 13 14print "This test will demonstrate a fork followed by ipc via signals.\n"; 15 16$pid=pcntl_fork(); 17if ($pid==0) { 18 pcntl_signal(SIGUSR1, "usr1_handle"); 19 pcntl_signal(SIGALRM, "alarm_handle"); 20 print "Child: Waiting for alarm.....\n"; 21 sleep(100); 22 print "Child: Waiting for usr1......\n"; 23 sleep(100); 24 print "Child: Resetting Alarm handler to Ignore....\n"; 25 pcntl_signal(SIGALRM, SIG_IGN); 26 print "Child: sleeping for 10 seconds....\n"; 27 sleep(10); 28 print "Done\n"; 29} else { 30 print "Parent: Waiting 10 seconds....\n"; 31 sleep(10); 32 print "Parent: Sending SIGALRM to Child\n"; 33 posix_kill($pid,SIGALRM); 34 sleep(1); 35 print "Parent: Senging SIGUSR1 to Child\n"; 36 posix_kill($pid,SIGUSR1); 37 sleep(2); 38 print "Parent: Sending SIGALRM to Child\n"; 39 pcntl_waitpid($pid, &$status, $options); 40} 41
