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;
14 // Ensure that daemon.php is executed from the base path of the installation
15 if (!file_exists("boot.php") && (sizeof($_SERVER["argv"]) != 0)) {
16 $directory = dirname($_SERVER["argv"][0]);
18 if (substr($directory, 0, 1) != "/") {
19 $directory = $_SERVER["PWD"]."/".$directory;
21 $directory = realpath($directory."/..");
26 require_once "boot.php";
27 require_once "include/dba.php";
29 $a = new App(dirname(__DIR__));
31 require_once ".htconfig.php";
32 dba::connect($db_host, $db_user, $db_pass, $db_data);
36 if (!isset($pidfile)) {
37 die('Please specify a pid file in the variable $pidfile in the .htconfig.php. For example:'."\n".
38 '$pidfile = "/path/to/daemon.pid";'."\n");
41 if (in_array("start", $_SERVER["argv"])) {
45 if (in_array("stop", $_SERVER["argv"])) {
49 if (in_array("status", $_SERVER["argv"])) {
53 $foreground = in_array("--foreground", $_SERVER["argv"]);
56 die("Please use either 'start', 'stop' or 'status'.\n");
59 if (empty($_SERVER["argv"][0])) {
60 die("Unexpected script behaviour. This message should never occur.\n");
63 $pid = @file_get_contents($pidfile);
65 if (empty($pid) && in_array($mode, ["stop", "status"])) {
66 Config::set('system', 'worker_daemon_mode', false);
67 die("Pidfile wasn't found. Is the daemon running?\n");
70 if ($mode == "status") {
71 if (posix_kill($pid, 0)) {
72 die("Daemon process $pid is running.\n");
77 Config::set('system', 'worker_daemon_mode', false);
78 die("Daemon process $pid isn't running.\n");
81 if ($mode == "stop") {
82 posix_kill($pid, SIGTERM);
86 logger("Worker daemon process $pid was killed.", LOGGER_DEBUG);
88 Config::set('system', 'worker_daemon_mode', false);
89 die("Worker daemon process $pid was killed.\n");
92 if (!empty($pid) && posix_kill($pid, 0)) {
93 die("Daemon process $pid is already running.\n");
96 logger('Starting worker daemon.', LOGGER_DEBUG);
99 echo "Starting worker daemon.\n";
101 // Switch over to daemon mode.
102 if ($pid = pcntl_fork()) {
106 fclose(STDIN); // Close all of the standard
108 // Enabling this seem to block a running php process with 100% CPU usage when there is an outpout
109 // fclose(STDOUT); // file descriptors as we
110 // fclose(STDERR); // are running as a daemon.
114 register_shutdown_function('shutdown');
116 if (posix_setsid() < 0) {
120 if ($pid = pcntl_fork()) {
125 file_put_contents($pidfile, $pid);
127 // We lose the database connection upon forking
128 dba::connect($db_host, $db_user, $db_pass, $db_data);
131 unset($db_host, $db_user, $db_pass, $db_data);
133 Config::set('system', 'worker_daemon_mode', true);
135 // Just to be sure that this script really runs endlessly
138 $wait_interval = intval(Config::get('system', 'cron_interval', 5)) * 60;
143 // Now running as a daemon.
145 if (!$do_cron && ($last_cron + $wait_interval) < time()) {
146 logger('Forcing cron worker call.', LOGGER_DEBUG);
150 Worker::spawnWorker($do_cron);
153 // We force a reconnect of the database connection.
154 // This is done to ensure that the connection don't get lost over time.
160 logger("Sleeping", LOGGER_DEBUG);
163 $seconds = (time() - $start);
165 // logarithmic wait time calculation.
166 // Background: After jobs had been started, they often fork many workers.
167 // To not waste too much time, the sleep period increases.
168 $arg = (($seconds + 1) / ($wait_interval / 9)) + 1;
169 $sleep = round(log10($arg) * 1000000, 0);
172 $timeout = ($seconds >= $wait_interval);
173 } while (!$timeout && !Worker::IPCJobsExists());
177 logger("Woke up after $wait_interval seconds.", LOGGER_DEBUG);
180 logger("Worker jobs are calling to be forked.", LOGGER_DEBUG);
184 function shutdown() {
185 posix_kill(posix_getpid(), SIGHUP);