public function vfsStreamFile::lock in Zircon Profile 8

Same name and namespace in other branches

1. 8.0 vendor/mikey179/vfsStream/src/main/php/org/bovigo/vfs/vfsStreamFile.php \org\bovigo\vfs\vfsStreamFile::lock()

locks file for

@since 0.10.0

Parameters

resource|vfsStreamWrapper $resource:

int $operation:

Return value

bool

See also

https://github.com/mikey179/vfsStream/issues/6

https://github.com/mikey179/vfsStream/issues/40

File

vendor/mikey179/vfsStream/src/main/php/org/bovigo/vfs/vfsStreamFile.php, line 268

Class

vfsStreamFile

File container.

Namespace

org\bovigo\vfs

Code

public function lock($resource, $operation) {
  if ((LOCK_NB & $operation) == LOCK_NB) {
    $operation = $operation - LOCK_NB;
  }

  // call to lock file on the same file handler firstly releases the lock
  $this
    ->unlock($resource);
  if (LOCK_EX === $operation) {
    if ($this
      ->isLocked()) {
      return false;
    }
    $this
      ->setExclusiveLock($resource);
  }
  elseif (LOCK_SH === $operation) {
    if ($this
      ->hasExclusiveLock()) {
      return false;
    }
    $this
      ->addSharedLock($resource);
  }
  return true;
}