public function LocalStream::stream_lock in Drupal 8

Same name and namespace in other branches

1. 9 core/lib/Drupal/Core/StreamWrapper/LocalStream.php \Drupal\Core\StreamWrapper\LocalStream::stream_lock()
2. 10 core/lib/Drupal/Core/StreamWrapper/LocalStream.php \Drupal\Core\StreamWrapper\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 core/lib/Drupal/Core/StreamWrapper/LocalReadOnlyStream.php

Support for flock().

File

core/lib/Drupal/Core/StreamWrapper/LocalStream.php, line 191

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, [
    LOCK_SH,
    LOCK_EX,
    LOCK_UN,
    LOCK_NB,
  ])) {
    return flock($this->handle, $operation);
  }
  return TRUE;
}