namespace Friendica\Core\Lock;
-use dba;
use Friendica\Core\Cache;
-use Friendica\Database\DBM;
+use Friendica\Database\DBA;
use Friendica\Util\DateTimeFormat;
/**
*/
class DatabaseLockDriver extends AbstractLockDriver
{
+ /**
+ * The current ID of the process
+ *
+ * @var int
+ */
+ private $pid;
+
+ /**
+ * @param null|int $pid The Id of the current process (null means determine automatically)
+ */
+ public function __construct($pid = null)
+ {
+ $this->pid = isset($pid) ? $pid : getmypid();
+ }
+
/**
* (@inheritdoc)
*/
$start = time();
do {
- dba::lock('locks');
- $lock = dba::selectFirst('locks', ['locked', 'pid'], ['`name` = ? AND `expires` >= ?', $key, DateTimeFormat::utcNow()]);
+ DBA::lock('locks');
+ $lock = DBA::selectFirst('locks', ['locked', 'pid'], ['`name` = ? AND `expires` >= ?', $key, DateTimeFormat::utcNow()]);
- if (DBM::is_result($lock)) {
+ if (DBA::isResult($lock)) {
if ($lock['locked']) {
// We want to lock something that was already locked by us? So we got the lock.
- if ($lock['pid'] == getmypid()) {
+ if ($lock['pid'] == $this->pid) {
$got_lock = true;
}
}
if (!$lock['locked']) {
- dba::update('locks', ['locked' => true, 'pid' => getmypid(), 'expires' => DateTimeFormat::utc('now + ' . $ttl . 'seconds')], ['name' => $key]);
+ DBA::update('locks', ['locked' => true, 'pid' => $this->pid, 'expires' => DateTimeFormat::utc('now + ' . $ttl . 'seconds')], ['name' => $key]);
$got_lock = true;
}
} else {
- dba::insert('locks', ['name' => $key, 'locked' => true, 'pid' => getmypid(), 'expires' => DateTimeFormat::utc('now + ' . $ttl . 'seconds')]);
+ DBA::insert('locks', ['name' => $key, 'locked' => true, 'pid' => $this->pid, 'expires' => DateTimeFormat::utc('now + ' . $ttl . 'seconds')]);
$got_lock = true;
$this->markAcquire($key);
}
- dba::unlock();
+ DBA::unlock();
if (!$got_lock && ($timeout > 0)) {
usleep(rand(100000, 2000000));
/**
* (@inheritdoc)
*/
- public function releaseLock($key)
+ public function releaseLock($key, $override = false)
{
- dba::delete('locks', ['name' => $key, 'pid' => getmypid()]);
+ if ($override) {
+ $where = ['name' => $key];
+ } else {
+ $where = ['name' => $key, 'pid' => $this->pid];
+ }
+
+ $return = DBA::delete('locks', $where);
$this->markRelease($key);
- return;
+ return $return;
}
/**
*/
public function releaseAll()
{
- dba::delete('locks', ['pid' => getmypid()]);
+ $return = DBA::delete('locks', ['pid' => $this->pid]);
$this->acquiredLocks = [];
+
+ return $return;
}
/**
*/
public function isLocked($key)
{
- $lock = dba::selectFirst('locks', ['locked'], ['`name` = ? AND `expires` >= ?', $key, DateTimeFormat::utcNow()]);
+ $lock = DBA::selectFirst('locks', ['locked'], ['`name` = ? AND `expires` >= ?', $key, DateTimeFormat::utcNow()]);
- if (DBM::is_result($lock)) {
+ if (DBA::isResult($lock)) {
return $lock['locked'] !== false;
} else {
return false;