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[DAEMONS] Switch daemons to double-forking for daemonisation

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This commit is contained in:
Alexei Sorokin 2019-09-10 21:14:27 +03:00
parent 9d8f4c774f
commit b0104d9992
1 changed files with 19 additions and 9 deletions
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28
lib/util/daemon.php
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@ -46,16 +46,26 @@ class Daemon
// Database connection will likely get lost after forking
$this->resetDb();
$pid = pcntl_fork();
if ($pid < 0) { // error
common_log(LOG_ERR, "Could not fork.");
return false;
} elseif ($pid > 0) { // parent
common_log(LOG_INFO, "Successfully forked.");
exit(0);
} else { // child
return true;
// Double-forking.
foreach (['single', 'double'] as $v) {
switch ($pid = pcntl_fork()) {
case -1: // error
common_log(LOG_ERR, 'Could not fork.');
return false;
case 0: // child
if ($v === 'single') {
posix_setsid();
}
break;
default: // parent
if ($v === 'double') {
common_log(LOG_INFO, 'Successfully forked.');
}
die();
}
}
return true;
}
public function alreadyRunning()