QThread - parallel

[wysota]

You can't use a non-static member function from another class. It either has to be static or can't be a member function. What is allowed and what is not is described in Qt Concurrent docs.

[sgrant327]

Got it...

Took me a while to get that EVERYTHING the QtConcurrent thread uses has to be static.

Just having a bit of trouble with QFutureWatcher and QtConcurrent. Sometime the app crashes after about 20 files, other times it runs fine, but 'locks' the computer as all 8 cores are running at 100%...

[spud]

You can use

QThreadPool::globalInstance->setMaxThreadCount()

QThreadPool::globalInstance->setMaxThreadCount()

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to limit the number of threads.
And if your application still is crashing, you are probably still accessing a shared variable in an unsafe way. I'm thinking of myList and allFiles.
It sounds like QtConcurrent::mappedReduced could be a candidate for you.

[wysota]

What exactly does your thread method do? Is there a chance you could post the code here?

[Lesiok]

Got it...

Took me a while to get that EVERYTHING the QtConcurrent thread uses has to be static.

Just having a bit of trouble with QFutureWatcher and QtConcurrent. Sometime the app crashes after about 20 files, other times it runs fine, but 'locks' the computer as all 8 cores are running at 100%...

Because as is writen in documentation Programs written with QtConcurrent automatically adjust the number of threads used according to the number of processor cores available. So they consume 100% available cores.
Your first idea with ThreadManager and WorkerThread is good. You must only create slot in ThreadManager and connect to them signal QThread::finished(). In this slot start worker with next file.