diff options
Diffstat (limited to 'src/include/port/atomics/arch-ia64.h')
| -rw-r--r-- | src/include/port/atomics/arch-ia64.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/include/port/atomics/arch-ia64.h b/src/include/port/atomics/arch-ia64.h new file mode 100644 index 00000000000..92a088e4cf5 --- /dev/null +++ b/src/include/port/atomics/arch-ia64.h @@ -0,0 +1,26 @@ +/*------------------------------------------------------------------------- + * + * arch-ia64.h + * Atomic operations considerations specific to intel itanium + * + * Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * NOTES: + * + * src/include/port/atomics/arch-ia64.h + * + *------------------------------------------------------------------------- + */ + +/* + * Itanium is weakly ordered, so read and write barriers require a full + * fence. + */ +#if defined(__INTEL_COMPILER) +# define pg_memory_barrier_impl() __mf() +#elif defined(__GNUC__) +# define pg_memory_barrier_impl() __asm__ __volatile__ ("mf" : : : "memory") +#elif defined(__hpux) +# define pg_memory_barrier_impl() _Asm_mf() +#endif |