• David Goodell's avatar
    [svn-r6919] completion counter cleanup (adds MPID_cc_t) · 0a5c22ae
    David Goodell authored
    When compiled for fine-grained threading, the completion counter serves
    as a form of lockfree signalling.  As such, atomic access and memory
    barriers must be used to ensure correctness.
    
    In per-object mode, this code also contains valgrind client request annotations
    to inform Helgrind/DRD/TSan about the lockfree signalling pattern.
    
    No reviewer.
    0a5c22ae