[Pixman] [PATCH 2/2] test: Add new thread-test program

Søren Sandmann sandmann at cs.au.dk
Wed Oct 9 08:27:16 PDT 2013

Siarhei Siamashka <siarhei.siamashka at gmail.com> writes:

> On Wed, 09 Oct 2013 17:06:06 +0200
> sandmann at cs.au.dk (Søren Sandmann) wrote:
>> Andrea Canciani <ranma42 at gmail.com> writes:
>> > Sorry, I didn't realize it beforehand, but I just noticed that thread-test
>> > fails on MacOS.
>> > This happens because it relies on the availability of OpenMP to have a
>> > thread-local state for the prng.
>> > Would it be ok to have each thread explicitly keep the state of its prng or
>> > is this another element that the test is supposed to be checking?
>> It's not intended to test the thread-private-ness of the prng states, so
>> yes, the simplest fix seems to be to just explicitly keep a prng_t
>> for each thread.
> Would it really help to pass the test? The fast path cache is using the
> thread-local storage too.

But the fast path cache is using the PIXMAN_DEFINE_THREAD_LOCAL macro
that uses pthread_setspecific() on Mac OS. I suppose it would make sense
to use that macro in thread_test as well, just to make sure it works.


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