In this article, we are going to discuss the Qt signals and slots thread safety. We are going to start by understanding what a signal is, and then move on to discussing the thread safety of signals.
Finally, we will provide a conclusion about Qt signals and slots thread safety.
What is a Signal?
A signal is an event that can be sent from one thread to another. When a signal is received, the receiver can execute some code in response.
For example, when the user presses the keyboard key ‘q’, the Qt library sends a signal called ‘ KeyboardFocusChanged ‘ to all threads. This signal causes all threads to stop whatever they are doing and pay attention to the keyboard.
Thread Safety of Signals
When a signal is sent from one thread to another, it is important to keep in mind the thread safety of signals. A signal is only safe if it is handled by threads that are safe for that particular signal.
For example, if you send a ‘ KeyboardFocusChanged ‘ signal from one thread to another, make sure that both threads are running in the same process. Otherwise, you might get unexpected results!.
Conclusion
In this article, we have discussed the Qt signals and slots thread safety. We have explained what a signal is and discussed how thread safety affects signals.
We have also provided a conclusion about Qt signals and slots thread safety.
