diff options
| -rw-r--r-- | src/corelib/kernel/qcoreapplication.cpp | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/corelib/kernel/qcoreapplication.cpp b/src/corelib/kernel/qcoreapplication.cpp index ccdece6357..5ea01ec53d 100644 --- a/src/corelib/kernel/qcoreapplication.cpp +++ b/src/corelib/kernel/qcoreapplication.cpp @@ -1399,6 +1399,12 @@ void QCoreApplicationPrivate::execCleanup() function \e does return to the caller -- it is event processing that stops. + Note also that this function is not thread-safe. It should be called only + from the main thread (the thread that the QCoreApplication object is + processing events on). To ask the application to exit from another thread, + either use QCoreApplication::quit() or instead call this function from the + main thread with QMetaMethod::invokeMethod(). + \sa quit(), exec() */ void QCoreApplication::exit(int returnCode) @@ -1950,6 +1956,8 @@ void QCoreApplicationPrivate::maybeQuit() } /*! + \threadsafe + Asks the application to quit. The request may be ignored if the application prevents the quit, @@ -1961,7 +1969,7 @@ void QCoreApplicationPrivate::maybeQuit() code 0 (success). To exit the application without a chance of being interrupted, call - exit() directly. + exit() directly. Note that method is not thread-safe. It's good practice to always connect signals to this slot using a \l{Qt::}{QueuedConnection}. If a signal connected (non-queued) to this slot @@ -1974,6 +1982,11 @@ void QCoreApplicationPrivate::maybeQuit() \snippet code/src_corelib_kernel_qcoreapplication.cpp 1 + \b{Thread-safety note}: this function may be called from any thread to + thread-safely cause the currently-running main application loop to exit. + However, thread-safety is not guaranteed if the QCoreApplication object is + being destroyed at the same time. + \sa exit(), aboutToQuit() */ void QCoreApplication::quit() |