Re: How to check the core execution for each thread?

[Antti P Miettinen <ananaza@xxxxxx>]

Charly Bechara <c_bechara@xxxxxxxxxxx> writes:
> I have a multithreaded C program executing on an MPCore system. I
> want to know if there is any function from glibc or a kernel system
> call which can return me the current core where the thread is
> executing on?

Glibc has sched_getcpu(), dunno when it got it, probably glibc-2.6ish,
uses the getcpu system call. When using, it is good to remember [1]:

    The result is the index of the CPU in the CPU set. Due
    to the nature of scheduling this number cannot always be
    100% correct. The thread might have been moved to a
    different CPU between the time the result was returned
    and when the thread returns to userlevel.

[1] http://people.redhat.com/drepper/cpumemory.pdf

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