libcilkrts/runtime/config/generic/os-fence.h

   1 /* os.h                  -*-C++-*-
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  49
  50 /*
  51  * void __cilkrts_fence(void)
  52  *
  53  * Executes an MFENCE instruction to serialize all load and store instructions
  54  * that were issued prior the MFENCE instruction. This serializing operation
  55  * guarantees that every load and store instruction that precedes the MFENCE
  56  * instruction is globally visible before any load or store instruction that
  57  * follows the MFENCE instruction. The MFENCE instruction is ordered with
  58  * respect to all load and store instructions, other MFENCE instructions, any
  59  * SFENCE and LFENCE instructions, and any serializing instructions (such as
  60  * the CPUID instruction).
  61  */
  62
  63 COMMON_SYSDEP void __cilkrts_fence(void); ///< MFENCE instruction
  64