What will happen if the activity of the main thread is blocked?
When the thread is blocked, events, including draw events, cannot be dispatched. From the user’s perspective, the app appears to crash.
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Are the threads blocked?
Blocked means execution is stuck there; usually the thread is put to sleep by the system and hands over the processor to another thread. When a thread blocks while trying to acquire a mutex, execution resumes when the mutex is released, although the thread might block again if another thread takes the mutex before it can.
Is it possible to lock a thread?
Yes it is. The thread on which the sleep method is called disables execution of the amount of sleep and also holds any locks, if it has any. Therefore, it does not perform any action during the sleep time, hence it crashes.
How many threads is a warp?
32 threads
A warp is a set of 32 threads within a thread block, such that all threads in a warp execute the same instruction. These threads are selected in series by the SM. Once a thread block is launched in a multiprocessor (SM), all its warps are resident until its execution is complete.
Can you make qthread blocking the GUI in another thread?
You are not allowed to do anything GUI related in a thread other than the main thread. Have you already seen “this example”: http://qt-project.org/wiki/QThreads_general_usage for a working object approach with QThread?
Why is my GUI blocked by the main thread?
I read that when assigning objects in the worker’s constructor, these objects are handled by the main thread (or the thread on which the main object is assigned). So my GUI shouldn’t be blocked by render thread operations right?
When to use Qt network to block threads?
Using Qt’s blocking network API often leads to simpler code, but due to its blocking behavior it should only be used on non-GUI threads to prevent UI freezing. But contrary to popular belief, using threads with QThread does not necessarily add unmanageable complexity to your application.
How to set the GUI on the main thread?
This is used in a QTabWidget so that each QWidget has its own class, then a *QWidget getWidget() method is used to set the GUI on the main QTabWidget’s content QWidget window. //… //… What I really thought is that by creating the GUI with new, the GUI would stay on the main thread.