diff options
Diffstat (limited to 'atomic/unix/builtins64.c')
| -rw-r--r-- | atomic/unix/builtins64.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/atomic/unix/builtins64.c b/atomic/unix/builtins64.c index 7d84225..f0cdb30 100644 --- a/atomic/unix/builtins64.c +++ b/atomic/unix/builtins64.c @@ -18,17 +18,18 @@ #ifdef USE_ATOMICS_BUILTINS64 -#if defined(__arm__) || defined(__powerpc__) || defined(__powerpc64__) -#define WEAK_MEMORY_ORDERING 1 -#else +#if defined(__i386__) || defined(__x86_64__) \ + || defined(__s390__) || defined(__s390x__) #define WEAK_MEMORY_ORDERING 0 +#else +#define WEAK_MEMORY_ORDERING 1 #endif APR_DECLARE(apr_uint64_t) apr_atomic_read64(volatile apr_uint64_t *mem) { #if HAVE__ATOMIC_BUILTINS return __atomic_load_n(mem, __ATOMIC_SEQ_CST); -#elif WEAK_MEMORY_ORDERING +#elif WEAK_MEMORY_ORDERING || APR_SIZEOF_VOIDP < 8 /* No __sync_load() available => apr_atomic_add64(mem, 0) */ return __sync_fetch_and_add(mem, 0); #else @@ -40,7 +41,7 @@ APR_DECLARE(void) apr_atomic_set64(volatile apr_uint64_t *mem, apr_uint64_t val) { #if HAVE__ATOMIC_BUILTINS __atomic_store_n(mem, val, __ATOMIC_SEQ_CST); -#elif WEAK_MEMORY_ORDERING +#elif WEAK_MEMORY_ORDERING || APR_SIZEOF_VOIDP < 8 /* No __sync_store() available => apr_atomic_xchg64(mem, val) */ __sync_synchronize(); __sync_lock_test_and_set(mem, val); |