diff options
Diffstat (limited to 'atomic/unix/mutex64.c')
| -rw-r--r-- | atomic/unix/mutex64.c | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/atomic/unix/mutex64.c b/atomic/unix/mutex64.c index 9f1f1df6d..a6a7ceb0b 100644 --- a/atomic/unix/mutex64.c +++ b/atomic/unix/mutex64.c @@ -96,17 +96,6 @@ apr_status_t apr__atomic_generic64_init(apr_pool_t *p) APR_DECLARE(apr_uint64_t) apr_atomic_read64(volatile apr_uint64_t *mem) { - /* On 32bit CPUs this loads with two instructions (tearing), - * so a lock is needed to ensure atomicity. - * - * APR_SIZEOF_VOIDP is probably not the right check for 32 vs 64 bits CPUs - * but it spares an (hardly-)exhaustive list of supported CPUs (and using - * assembly). If APR_SIZEOF_VOIDP==4 means that the compiler generates - * 32bit instructions (-m32 or whatever) then it's the right check though. - */ -#if APR_SIZEOF_VOIDP >= 8 - return *mem; -#else apr_uint64_t cur_value; DECLARE_MUTEX_LOCKED(mutex, mem); @@ -115,7 +104,6 @@ APR_DECLARE(apr_uint64_t) apr_atomic_read64(volatile apr_uint64_t *mem) MUTEX_UNLOCK(mutex); return cur_value; -#endif } APR_DECLARE(void) apr_atomic_set64(volatile apr_uint64_t *mem, apr_uint64_t val) |