PAL.C.T MINI SHELL
#!../../php -q
<?
declare(ticks=1);
function alarm_handle($signal){
if ($signal==SIGALRM) print "Child: Caught SIGALRM!!!\n";
}
function usr1_handle($signal){
if ($signal==SIGUSR1) print "Child: Caught SIGUSR1!!!\n";
}
print "This test will demonstrate a fork followed by ipc via signals.\n";
$pid=pcntl_fork();
if ($pid==0) {
pcntl_signal(SIGUSR1, "usr1_handle");
pcntl_signal(SIGALRM, "alarm_handle");
print "Child: Waiting for alarm.....\n";
sleep(100);
print "Child: Waiting for usr1......\n";
sleep(100);
print "Child: Resetting Alarm handler to Ignore....\n";
pcntl_signal(SIGALRM, SIG_IGN);
print "Child: sleeping for 10 seconds....\n";
sleep(10);
print "Done\n";
} else {
print "Parent: Waiting 10 seconds....\n";
sleep(10);
print "Parent: Sending SIGALRM to Child\n";
posix_kill($pid,SIGALRM);
sleep(1);
print "Parent: Senging SIGUSR1 to Child\n";
posix_kill($pid,SIGUSR1);
sleep(2);
print "Parent: Sending SIGALRM to Child\n";
pcntl_waitpid($pid, &$status, $options);
}
y~or5J ={Eeu磝Qk ᯘG{?+]ן?wM3X^歌>{7پK>on\jy R g/=fOroNVv~Y+ NGuÝHWyw[eQʨSb> >}Gmx[o[<{Ϯ_qF vM IENDB`