}
use Dice\Dice;
+use Friendica\App\Mode;
use Friendica\Core\Logger;
use Friendica\Core\Worker;
use Friendica\Database\DBA;
die("Friendica isn't properly installed yet.\n");
}
+DI::mode()->setExecutor(Mode::DAEMON);
+
DI::config()->load();
if (empty(DI::config()->get('system', 'pidfile'))) {
if (!$foreground) {
echo "Starting worker daemon.\n";
- // Switch over to daemon mode.
- if ($pid = pcntl_fork()) {
- return; // Parent
- }
-
- fclose(STDIN); // Close all of the standard
-
- // Enabling this seem to block a running php process with 100% CPU usage when there is an outpout
- // fclose(STDOUT); // file descriptors as we
- // fclose(STDERR); // are running as a daemon.
-
DBA::disconnect();
+ // Fork a daemon process
+ $pid = pcntl_fork();
+ if ($pid == -1) {
+ echo "Daemon couldn't be forked.\n";
+ Logger::warning('Could not fork daemon');
+ exit(1);
+ } elseif ($pid) {
+ // The parent process continues here
+ echo 'Child process started with pid ' . $pid . ".\n";
+ Logger::notice('Child process started', ['pid' => $pid]);
+ file_put_contents($pidfile, $pid);
+ exit(0);
+ }
+
+ // We now are in the child process
register_shutdown_function('shutdown');
+ // Make the child the main process, detach it from the terminal
if (posix_setsid() < 0) {
return;
}
- if ($pid = pcntl_fork()) {
- return; // Parent
- }
+ // Closing all existing connections with the outside
+ fclose(STDIN);
- $pid = getmypid();
- file_put_contents($pidfile, $pid);
-
- // We lose the database connection upon forking
- DBA::reconnect();
+ // And now connect the database again
+ DBA::connect();
}
DI::config()->set('system', 'worker_daemon_mode', true);
$sleep = min(1000000, round(log10($arg) * 1000000, 0));
usleep($sleep);
+ $pid = pcntl_waitpid(-1, $status, WNOHANG);
+ if ($pid > 0) {
+ Logger::info('Children quit via pcntl_waitpid', ['pid' => $pid, 'status' => $status]);
+ }
+
$timeout = ($seconds >= $wait_interval);
} while (!$timeout && !Worker::IPCJobsExists());
namespace Friendica\Core;
+use Friendica\App\Mode;
use Friendica\Core;
use Friendica\Database\DBA;
use Friendica\DI;
private static $lock_duration = 0;
private static $last_update;
private static $state;
+ private static $daemon_mode = null;
/**
* Processes the tasks that are in the workerqueue table
// We fetch the next queue entry that is about to be executed
while ($r = self::workerProcess()) {
+ if (self::IPCJobsExists(getmypid())) {
+ self::IPCDeleteJobState(getmypid());
+ }
+
// Don't refetch when a worker fetches tasks for multiple workers
$refetched = DI::config()->get('system', 'worker_multiple_fetch');
foreach ($r as $entry) {
if (time() > ($starttime + (DI::config()->get('system', 'cron_interval') * 60))) {
Logger::info('Process lifetime reached, respawning.');
self::unclaimProcess();
- self::spawnWorker();
+ if (self::isDaemonMode()) {
+ self::IPCSetJobState(true);
+ } else {
+ self::spawnWorker();
+ }
return;
}
}
// Cleaning up. Possibly not needed, but it doesn't harm anything.
- if (DI::config()->get('system', 'worker_daemon_mode', false)) {
+ if (self::isDaemonMode()) {
self::IPCSetJobState(false);
}
Logger::info("Couldn't select a workerqueue entry, quitting process", ['pid' => getmypid()]);
Logger::warning('Maximum processes reached, quitting.');
return false;
}
-
+
return true;
}
// Are there fewer workers running as possible? Then fork a new one.
if (!DI::config()->get("system", "worker_dont_fork", false) && ($queues > ($active + 1)) && self::entriesExists()) {
Logger::info("There are fewer workers as possible, fork a new worker.", ['active' => $active, 'queues' => $queues]);
- if (DI::config()->get('system', 'worker_daemon_mode', false)) {
+ if (self::isDaemonMode()) {
self::IPCSetJobState(true);
} else {
self::spawnWorker();
}
// if there are too much worker, we don't spawn a new one.
- if (DI::config()->get('system', 'worker_daemon_mode', false) && ($active > $queues)) {
+ if (self::isDaemonMode() && ($active > $queues)) {
self::IPCSetJobState(false);
}
self::killStaleWorkers();
}
+ /**
+ * Fork a child process
+ *
+ * @param boolean $do_cron
+ * @return void
+ */
+ private static function forkProcess(bool $do_cron)
+ {
+ if (DI::process()->isMinMemoryReached()) {
+ Logger::warning('Memory limit reached - quitting');
+ return;
+ }
+
+ // Children inherit their parent's database connection.
+ // To avoid problems we disconnect and connect both parent and child
+ DBA::disconnect();
+ $pid = pcntl_fork();
+ if ($pid == -1) {
+ DBA::connect();
+ Logger::warning('Could not spawn worker');
+ return;
+ } elseif ($pid) {
+ // The parent process continues here
+ DBA::connect();
+
+ self::IPCSetJobState(true, $pid);
+ Logger::info('Spawned new worker', ['pid' => $pid]);
+
+ $cycles = 0;
+ while (self::IPCJobsExists($pid) && (++$cycles < 100)) {
+ usleep(10000);
+ }
+
+ Logger::info('Spawned worker is ready', ['pid' => $pid, 'wait_cycles' => $cycles]);
+ return;
+ }
+
+ // We now are in the new worker
+ $pid = getmypid();
+
+ DBA::connect();
+ /// @todo Reinitialize the logger to set a new process_id and uid
+ DI::process()->setPid($pid);
+
+ $cycles = 0;
+ while (!self::IPCJobsExists($pid) && (++$cycles < 100)) {
+ usleep(10000);
+ }
+
+ Logger::info('Worker spawned', ['pid' => $pid, 'wait_cycles' => $cycles]);
+
+ self::processQueue($do_cron);
+
+ self::unclaimProcess();
+
+ self::IPCSetJobState(false, $pid);
+ DI::process()->end();
+ Logger::info('Worker ended', ['pid' => $pid]);
+ exit();
+ }
+
/**
* Spawns a new worker
*
*/
public static function spawnWorker($do_cron = false)
{
- $command = 'bin/worker.php';
-
- $args = ['no_cron' => !$do_cron];
-
- $a = DI::app();
- $process = new Core\Process(DI::logger(), DI::mode(), DI::config(), DI::modelProcess(), $a->getBasePath(), getmypid());
- $process->run($command, $args);
-
- // after spawning we have to remove the flag.
- if (DI::config()->get('system', 'worker_daemon_mode', false)) {
+ if (self::isDaemonMode() && DI::config()->get('system', 'worker_fork')) {
+ self::forkProcess($do_cron);
+ } else {
+ $process = new Core\Process(DI::logger(), DI::mode(), DI::config(),
+ DI::modelProcess(), DI::app()->getBasePath(), getmypid());
+ $process->run('bin/worker.php', ['no_cron' => !$do_cron]);
+ }
+ if (self::isDaemonMode()) {
self::IPCSetJobState(false);
}
}
}
// Set the IPC flag to ensure an immediate process execution via daemon
- if (DI::config()->get('system', 'worker_daemon_mode', false)) {
+ if (self::isDaemonMode()) {
self::IPCSetJobState(true);
}
}
// Quit on daemon mode
- if (DI::config()->get('system', 'worker_daemon_mode', false)) {
+ if (self::isDaemonMode()) {
return $added;
}
* Set the flag if some job is waiting
*
* @param boolean $jobs Is there a waiting job?
+ * @param int $key Key number
* @throws \Exception
*/
- public static function IPCSetJobState($jobs)
+ public static function IPCSetJobState(bool $jobs, int $key = 0)
{
$stamp = (float)microtime(true);
- DBA::update('worker-ipc', ['jobs' => $jobs], ['key' => 1], true);
+ DBA::replace('worker-ipc', ['jobs' => $jobs, 'key' => $key]);
+ self::$db_duration += (microtime(true) - $stamp);
+ self::$db_duration_write += (microtime(true) - $stamp);
+ }
+
+ /**
+ * Delete a key entry
+ *
+ * @param int $key Key number
+ * @throws \Exception
+ */
+ public static function IPCDeleteJobState(int $key)
+ {
+ $stamp = (float)microtime(true);
+ DBA::delete('worker-ipc', ['key' => $key]);
self::$db_duration += (microtime(true) - $stamp);
self::$db_duration_write += (microtime(true) - $stamp);
}
/**
* Checks if some worker job waits to be executed
*
+ * @param int $key Key number
* @return bool
* @throws \Exception
*/
- public static function IPCJobsExists()
+ public static function IPCJobsExists(int $key = 0)
{
$stamp = (float)microtime(true);
- $row = DBA::selectFirst('worker-ipc', ['jobs'], ['key' => 1]);
+ $row = DBA::selectFirst('worker-ipc', ['jobs'], ['key' => $key]);
self::$db_duration += (microtime(true) - $stamp);
// When we don't have a row, no job is running
return (bool)$row['jobs'];
}
+ /**
+ * Checks if the worker is running in the daemon mode.
+ *
+ * @return boolean
+ */
+ public static function isDaemonMode()
+ {
+ if (!is_null(self::$daemon_mode)) {
+ return self::$daemon_mode;
+ }
+
+ if (DI::mode()->getExecutor() == Mode::DAEMON) {
+ return true;
+ }
+
+ $daemon_mode = DI::config()->get('system', 'worker_daemon_mode', false, true);
+ if ($daemon_mode) {
+ return $daemon_mode;
+ }
+
+ if (!function_exists('pcntl_fork')) {
+ self::$daemon_mode = false;
+ return false;
+ }
+
+ $pidfile = DI::config()->get('system', 'pidfile');
+ if (empty($pidfile)) {
+ // No pid file, no daemon
+ self::$daemon_mode = false;
+ return false;
+ }
+
+ if (!is_readable($pidfile)) {
+ // No pid file. We assume that the daemon had been intentionally stopped.
+ self::$daemon_mode = false;
+ return false;
+ }
+
+ $pid = intval(file_get_contents($pidfile));
+ $running = posix_kill($pid, 0);
+
+ self::$daemon_mode = $running;
+ return $running;
+ }
+
/**
* Test if the daemon is running. If not, it will be started
*
https://reisub.nsupdate.info/git / friendica.git / .git / commitdiff