5 * @brief Run the worker from a daemon.
7 * This script was taken from http://php.net/manual/en/function.pcntl-fork.php
11 use Friendica\Core\Config;
12 use Friendica\Core\Worker;
13 use Friendica\Database\DBA;
17 $longopts = ['foreground'];
18 $options = getopt($shortopts, $longopts);
20 // Ensure that daemon.php is executed from the base path of the installation
21 if (!file_exists("boot.php") && (sizeof($_SERVER["argv"]) != 0)) {
22 $directory = dirname($_SERVER["argv"][0]);
24 if (substr($directory, 0, 1) != "/") {
25 $directory = $_SERVER["PWD"] . "/" . $directory;
27 $directory = realpath($directory . "/..");
32 require_once "boot.php";
33 require_once "include/dba.php";
35 $a = new App(dirname(__DIR__));
37 if ($a->isInstallMode()) {
38 die("Friendica isn't properly installed yet.\n");
43 if (empty(Config::get('system', 'pidfile'))) {
44 die('Please set system.pidfile in config/local.ini.php. For example:'."\n".
46 'pidfile = /path/to/daemon.pid'."\n");
49 $pidfile = Config::get('system', 'pidfile');
51 if (in_array("start", $_SERVER["argv"])) {
55 if (in_array("stop", $_SERVER["argv"])) {
59 if (in_array("status", $_SERVER["argv"])) {
63 $foreground = array_key_exists('f', $options) || array_key_exists('foreground', $options);
66 die("Please use either 'start', 'stop' or 'status'.\n");
69 if (empty($_SERVER["argv"][0])) {
70 die("Unexpected script behaviour. This message should never occur.\n");
75 if (is_readable($pidfile)) {
76 $pid = intval(file_get_contents($pidfile));
79 if (empty($pid) && in_array($mode, ["stop", "status"])) {
80 Config::set('system', 'worker_daemon_mode', false);
81 die("Pidfile wasn't found. Is the daemon running?\n");
84 if ($mode == "status") {
85 if (posix_kill($pid, 0)) {
86 die("Daemon process $pid is running.\n");
91 Config::set('system', 'worker_daemon_mode', false);
92 die("Daemon process $pid isn't running.\n");
95 if ($mode == "stop") {
96 posix_kill($pid, SIGTERM);
100 logger("Worker daemon process $pid was killed.", LOGGER_DEBUG);
102 Config::set('system', 'worker_daemon_mode', false);
103 die("Worker daemon process $pid was killed.\n");
106 if (!empty($pid) && posix_kill($pid, 0)) {
107 die("Daemon process $pid is already running.\n");
110 logger('Starting worker daemon.', LOGGER_DEBUG);
113 echo "Starting worker daemon.\n";
115 // Switch over to daemon mode.
116 if ($pid = pcntl_fork()) {
120 fclose(STDIN); // Close all of the standard
122 // Enabling this seem to block a running php process with 100% CPU usage when there is an outpout
123 // fclose(STDOUT); // file descriptors as we
124 // fclose(STDERR); // are running as a daemon.
128 register_shutdown_function('shutdown');
130 if (posix_setsid() < 0) {
134 if ($pid = pcntl_fork()) {
139 file_put_contents($pidfile, $pid);
141 // We lose the database connection upon forking
145 Config::set('system', 'worker_daemon_mode', true);
147 // Just to be sure that this script really runs endlessly
150 $wait_interval = intval(Config::get('system', 'cron_interval', 5)) * 60;
155 // Now running as a daemon.
157 if (!$do_cron && ($last_cron + $wait_interval) < time()) {
158 logger('Forcing cron worker call.', LOGGER_DEBUG);
162 Worker::spawnWorker($do_cron);
165 // We force a reconnect of the database connection.
166 // This is done to ensure that the connection don't get lost over time.
172 logger("Sleeping", LOGGER_DEBUG);
175 $seconds = (time() - $start);
177 // logarithmic wait time calculation.
178 // Background: After jobs had been started, they often fork many workers.
179 // To not waste too much time, the sleep period increases.
180 $arg = (($seconds + 1) / ($wait_interval / 9)) + 1;
181 $sleep = round(log10($arg) * 1000000, 0);
184 $timeout = ($seconds >= $wait_interval);
185 } while (!$timeout && !Worker::IPCJobsExists());
189 logger("Woke up after $wait_interval seconds.", LOGGER_DEBUG);
192 logger("Worker jobs are calling to be forked.", LOGGER_DEBUG);
196 function shutdown() {
197 posix_kill(posix_getpid(), SIGHUP);