Pause and resume a thread in Qt

[chcw]

In Qt, does it support to pause and resume a thread? Thanks

[andreyc]

Yes, Qt supports pause and resume a thread.

[SGaist]

Hi,

You'll have to be a bit more specific, what exactly do you mean by pausing and resuming a thread ?

[chcw]

For example, after a thread is started for some time, I want to pause the execution of the thread codes for several minutes, and then resume the execution from the point where the thread is paused.

[SGaist]

Then it's up to you to do the design of such a functionality using e.g. a QWaitCondition.

[chcw]

Is it possible to do not modify the internal codes of the thread, instead, just operate on the thread itself from outside to suspend and resume the thread.

In Visual C++ and Windows system, it is possible to do so by calling:

pThread->SuspendThread();

and

pThread->ResumeThread();

[SGaist]

Looks like some answers disappeared… Did you got the last one ?

[chcw]

No. Could you please rewrite again? Sorry about it but it seems a system problem?

[SGaist]

If you are only targeting windows, then you can use native threads directly. Be aware that (AFAIK) posix threads don't have the concept of pause/resume.

[chcw]

All my current threads are written via a QThread derived class, need I rewrite all of them to native versions, or is QThread providing an interface for me to access the Windows native thread wrapped by QThread? I think QThread is a wrapper of the underlying operating system native thread.