streamWrapper::stream_lock

Description

This method is called in response to flock(), when file_put_contents() (when flags contains LOCK_EX), stream_set_blocking() and when closing the stream (LOCK_UN).

Parameters

operation

operation is 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).

It is also possible to have LOCK_NB added as a bitmask to one of the above operations, if the lock should not block during the locking attempt (not supported on Windows).

Return Values

Success

Errors/Exceptions

Emits E_WARNING if call to this method fails (i.e. not implemented).

See Also

• stream_set_blocking()
• flock()