public function LocalStream::stream_lock

Support for flock().

Parameters

int $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

bool Always returns TRUE at the present time.

Overrides PhpStreamWrapperInterface::stream_lock

See also

http://php.net/manual/streamwrapper.stream-lock.php

1 method overrides LocalStream::stream_lock()
LocalReadOnlyStream::stream_lock in drupal/core/lib/Drupal/Core/StreamWrapper/LocalReadOnlyStream.php
Support for flock().

File

drupal/core/lib/Drupal/Core/StreamWrapper/LocalStream.php, line 223
Definition of Drupal\Core\StreamWrapper\LocalStream.

Class

LocalStream
Defines a Drupal stream wrapper base class for local files.

Namespace

Drupal\Core\StreamWrapper

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;
}