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Setting thread processor affinity in Linux
If you want to set CPU affinity per QThread [doc.qt.nokia.com], Qt does not provide an API do this, and you will need to use native platform calls. Qt provides a native handle to the currently running thread via the static method QThread::currentThreadId() [qt.nokia.com].
In Linux you will want to take a look at pthread_setaffinity_np() (in /usr/include/pthread.h) which lets you set the affinity of a thread. The id returned by QThread::currentThreadId() is the same as pthread_self(), so to change the affinity of the current thread, you could do something like this:
cpu_set_t cpuset;
- CPU_ZERO(&cpuset);
- CPU_SET(cpuNumber, &cpuset);
…
You could just use pthread_self() as well, avoiding the cast.
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