public function DrupalLocalStreamWrapper::stream_lock
public DrupalLocalStreamWrapper::stream_lock($operation)
Support for flock().
Parameters
$operation: One of the following:
- LOCK_SH to acquire a shared lock (reader).
- LOCK_EX to acquire an exclusive lock (writer).
- LOCK_UN to release a lock (shared or exclusive).
- LOCK_NB if you don't want flock() to block while locking (not supported on Windows).
Return value
Always returns TRUE at the present time.
Overrides StreamWrapperInterface::stream_lock
See also
http://php.net/manual/streamwrapper.stream-lock.php
File
- includes/stream_wrappers.inc, line 434
- Drupal stream wrapper interface.
Class
- DrupalLocalStreamWrapper
- Drupal stream wrapper base class for local files.
Code
public function stream_lock($operation) { if (in_array($operation, array(LOCK_SH, LOCK_EX, LOCK_UN, LOCK_NB))) { return flock($this->handle, $operation); } return TRUE; }
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Licensed under the GNU General Public License, version 2 and later.
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https://api.drupal.org/api/drupal/includes!stream_wrappers.inc/function/DrupalLocalStreamWrapper::stream_lock/7.x