pcntl_signal
(PHP 4 >= 4.1.0, PHP 5)
pcntl_signal -- シグナルハンドラを設定する
説明
bool
pcntl_signal ( int signo, mixed handle)
The pcntl_signal() function installs a new
signal handler for the signal indicated by
signo. The signal handler is set to
handler which may be the name of a user
created function, or either of the two global constants SIG_IGN
or SIG_DFL.
pcntl_signal() returns TRUE on success or
FALSE on failure.
例 1. pcntl_signal() Example
<?php
// signal handler function function sig_handler($signo) {
switch($signo) { case SIGTERM: // handle shutdown tasks exit; break; case SIGHUP: // handle restart tasks break; case SIGUSR1: print "Caught SIGUSR1...\n"; break; default: // handle all other signals }
}
print "Installing signal handler...\n";
// setup signal handlers pcntl_signal(SIGTERM, "sig_handler"); pcntl_signal(SIGHUP, "sig_handler"); pcntl_signal(SIGUSR1, "sig_handler");
print "Generating signal SIGTERM to self...\n";
// send SIGUSR1 to current process id posix_kill(posix_getpid(), SIGUSR1);
print "Done\n"
?>
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pcntl_fork()および
pcntl_waitpid()も参照下さい。