libatomic/config/arm/host-config.h

   1 /* Avoiding the DMB (or kernel helper) can be a good thing.  */
   2 #define WANT_SPECIALCASE_RELAXED
   3
   4 /* Glibc, at least, uses acq_rel in its pthread mutex
   5    implementation.  If the user is asking for seq_cst,
   6    this is insufficient.  */
   7
   8 static inline void __attribute__((always_inline, artificial))
   9 pre_seq_barrier(int model)
  10 {
  11   if (model == __ATOMIC_SEQ_CST)
  12     __atomic_thread_fence (__ATOMIC_SEQ_CST);
  13 }
  14
  15 static inline void __attribute__((always_inline, artificial))
  16 post_seq_barrier(int model)
  17 {
  18   pre_seq_barrier(model);
  19 }
  20
  21 #define pre_post_seq_barrier 1
  22
  23 #include_next <host-config.h>