On Fri, Sep 30, 2016 at 3:08 PM, Bas Nieuwenhuizen <b...@basnieuwenhuizen.nl> wrote: > On Fri, Sep 30, 2016 at 2:13 PM, Marek Olšák <mar...@gmail.com> wrote: >> intptr_t reads and writes aren't atomic. p_atomic_set and >> p_atomic_read functions don't do anything for atomicity. See: >> >> #define p_atomic_set(_v, _i) (*(_v) = (_i)) >> #define p_atomic_read(_v) (*(_v)) > > That implementation seems bogus to me, as the compiler sees none of > them as atomic and therefore the compiler can do strange stuff. > > why are intptr_t reads/writes less atomic than int32_t? IIRC on x86_64 > aligned 64-bit accesses are atomic, and on x86 intptr_t is just 32 > bits.
Really? Thanks, I didn't know that. Marek _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
