Is there any particular reason why atomic_load_acq_*() and atomic_store_rel_*() are implemented with CMPXCHG and XCHG instead of MOV on i386/amd64 UP? Also, could we use MFENCE/LFENCE/SFENCE in combination with MOV on SMP systems instead of LOCK CMPXCHG / (implied LOCK) XCHG? TimReceived on Thu Aug 05 2004 - 03:04:52 UTC
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