QWriteLocker Class | Qt 4.8 (original) (raw)

The QWriteLocker class is a convenience class that simplifies locking and unlocking read-write locks for write access. More...

Note: All functions in this class are thread-safe.

• List of all members, including inherited members

Public Functions

Detailed Description

The QWriteLocker class is a convenience class that simplifies locking and unlocking read-write locks for write access.

The purpose of QWriteLocker (and QReadLocker is to simplify QReadWriteLock locking and unlocking. Locking and unlocking statements or in exception handling code is error-prone and difficult to debug. QWriteLocker can be used in such situations to ensure that the state of the lock is always well-defined.

Here's an example that uses QWriteLocker to lock and unlock a read-write lock for writing:

It is equivalent to the following code:

The QMutexLocker documentation shows examples where the use of a locker object greatly simplifies programming.

See also QReadLocker and QReadWriteLock.

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