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I correct , please read again...


5/11/2016 4:21:00 PM


Look at this scalable Asymmetric rw_mutex from Dmitry Vyukov:


If you have noticed he is using a compiler "_ReadWriteBarrier()",
but this doesn't emmit a fence on x86, it is just a compiler barrier,
but i am wondering how can he do it this way because loads
of the reader critical section are reordered with the following store:

reader_inside[current_thread_index] = true;

So i think it is a bug, can you please share a light on this ?

Thank you,
Amine Moulay Ramdane.