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Use "pcntl_fork" to fork processes

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This commit is contained in:
Michael 2021-01-01 19:35:29 +00:00
parent b10cd8772c
commit 9a6141dcbe
5 changed files with 112 additions and 27 deletions
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55
src/Core/Worker.php
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@ -21,6 +21,7 @@
namespace Friendica\Core;
use Friendica\App\Mode;
use Friendica\Core;
use Friendica\Database\DBA;
use Friendica\DI;
@ -1180,6 +1181,44 @@ class Worker
self::killStaleWorkers();
}
/**
* Fork a child process
*
* @param boolean $do_cron
* @return void
*/
private static function forkProcess(bool $do_cron)
{
// 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();
Logger::info('Spawned new worker', ['cron' => $do_cron, 'pid' => $pid]);
return;
}
// We now are in the new worker
DBA::connect();
Logger::info('Worker spawned', ['cron' => $do_cron, 'pid' => getmypid()]);
DI::process()->start();
self::processQueue($do_cron);
self::unclaimProcess();
DI::process()->end();
Logger::info('Worker ended', ['cron' => $do_cron, 'pid' => getmypid()]);
exit();
}
/**
* Spawns a new worker
*
@ -1189,13 +1228,15 @@ class Worker
*/
public static function spawnWorker($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, $args);
// Worker and daemon are started from the command line.
// This means that this is executed by a PHP interpreter without runtime limitations
if (in_array(DI::mode()->getExecutor(), [Mode::DAEMON, Mode::WORKER])) {
self::forkProcess($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]);
}
// after spawning we have to remove the flag.
if (DI::config()->get('system', 'worker_daemon_mode', false)) {