Hi,
I have this script testing.php that I run on a Linux machine thru the
command line. In the end of the file you see two cases. One where it
is just having a while(true) loop doing nothing, and the other calling
an other script that is doing nothing but doesn't exit. When I send
SIGTERM for the first case it does what it is supposed to do, but when
sending SIGTERM to the other case it doesn't work.
Might it be so that the signals cannot be handled if the script is
busy creating its own process or similar? Because when executing it
with case two doesn't leave the exec() part until the other script
exits, and it will never exits.
I try to send the signal with:
# kill -s SIGTERM 24574
The "ps -ef | grep testing.php | grep -v grep" looks like this as example:
500 24574 1 0 13:50 ? 00:00:00 /usr/bin/php ./testing.php
Best regards,
Peter Lauri
Code:
+++++++++++++++++++++++++++++++++++++++++++++++++++++
#!/usr/bin/php
<?php
declare(ticks = 1);
$pid = pcntl_fork();
if ($pid == -1) {
die("could not fork");
} else if ($pid) {
exit(); // we are the parent
} else {
// we are the child
}
// detatch from the controlling terminal
if (!posix_setsid()) {
die("could not detach from terminal");
}
function sig_handle($signo) {
switch($signo) {
case SIGTERM:
echo "I got the SIGTERM signal:".$signo."\n";
break;
case SIGCHLD:
echo "I got the SIGCHLD signal:".$signo."\n";
break;
case SIGINT:
echo "I got the SIGINT signal:".$signo."\n";
break;
}
}
pcntl_signal(SIGTERM, "sig_handle");
pcntl_signal(SIGCHLD, "sig_handle");
pcntl_signal(SIGINT, "sig_handle");
//Case 1 with just a while loop is working
//while(true) {
//
//}
//Case 2 when executing the script testing2.php that also do a
//infinite while loop does not work
//exec("./testing2.php");
?>
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