diff options
| -rw-r--r-- | storage/innobase/include/ut0ut.h | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/storage/innobase/include/ut0ut.h b/storage/innobase/include/ut0ut.h index a19f3db188d..c20a9023458 100644 --- a/storage/innobase/include/ut0ut.h +++ b/storage/innobase/include/ut0ut.h @@ -71,12 +71,11 @@ Created 1/20/1994 Heikki Tuuri #elif defined(__powerpc__) && defined __GLIBC__ # include <sys/platform/ppc.h> # define UT_RELAX_CPU() __ppc_get_timebase() +#elif defined __GNUC__ +/* Mainly, prevent the compiler from optimizing away delay loops */ +# define UT_RELAX_CPU() __asm__ __volatile__ ("":::"memory") #else -# define UT_RELAX_CPU() do { \ - volatile int32 volatile_var; \ - int32 oldval= 0; \ - my_atomic_cas32(&volatile_var, &oldval, 1); \ - } while (0) +# define UT_RELAX_CPU() #endif #if defined (__GNUC__) |