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On 32-bit Windows use only default memory ordering

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This commit is contained in:
Ondřej Surý 2018-09-05 22:11:52 +02:00
parent 8360df5a4c
commit 0dc714c40d
1 changed files with 19 additions and 0 deletions
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19
lib/isc/win32/include/isc/stdatomic.h
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@ -64,12 +64,17 @@ typedef uint_fast64_t volatile atomic_uint_fast64_t;
? InterlockedExchangeAcquire((atomic_int_fast32_t *)obj, desired) \
: InterlockedExchange((atomic_int_fast32_t *)obj, desired)))
#ifdef _WIN64
#define atomic_store_explicit64(obj, desired, order) \
(order == memory_order_relaxed \
? InterlockedExchangeNoFence64((atomic_int_fast64_t *)obj, desired) \
: (order == memory_order_acquire \
? InterlockedExchangeAcquire64((atomic_int_fast64_t *)obj, desired) \
: InterlockedExchange64((atomic_int_fast64_t *)obj, desired)))
#else
#define atomic_store_explicit64(obj, desired, order) \
InterlockedExchange64((atomic_int_fast64_t *)obj, desired)
#endif
static inline
void
@ -97,6 +102,7 @@ atomic_store_abort() {
? (int32_t)InterlockedOrRelease((atomic_int_fast32_t *)obj, 0) \
: (int32_t)InterlockedOr((atomic_int_fast32_t *)obj, 0))))
#ifdef _WIN64
#define atomic_load_explicit64(obj, order) \
(order == memory_order_relaxed \
? InterlockedOr64NoFence((atomic_int_fast64_t *)obj, 0) \
@ -105,6 +111,10 @@ atomic_store_abort() {
: (order == memory_order_release \
? InterlockedOr64Release((atomic_int_fast64_t *)obj, 0) \
: InterlockedOr64((atomic_int_fast64_t *)obj, 0))))
#else
#define atomic_load_explicit64(obj, order) \
InterlockedOr64((atomic_int_fast64_t *)obj, 0)
#endif
static inline
int8_t
@ -132,6 +142,7 @@ atomic_load_abort() {
? InterlockedExchangeAddRelease((atomic_int_fast32_t *)obj, arg) \
: InterlockedExchange((atomic_int_fast32_t *)obj, arg))))
#ifdef _WIN64
#define atomic_fetch_add_explicit64(obj, arg, order) \
(order == memory_order_relaxed \
? InterlockedExchangeAddNoFence64((atomic_int_fast64_t *)obj, arg) \
@ -140,6 +151,10 @@ atomic_load_abort() {
: (order == memory_order_release \
? InterlockedExchangeAddRelease64((atomic_int_fast64_t *)obj, arg) \
: InterlockedExchange64((atomic_int_fast64_t *)obj, arg))))
#else
#define atomic_fetch_add_explicit64(obj, arg, order) \
InterlockedExchange64((atomic_int_fast64_t *)obj, arg)
#endif
static inline
int8_t
@ -203,6 +218,7 @@ atomic_compare_exchange_strong_explicit64(atomic_int_fast64_t *obj,
bool __r;
int64_t __v;
REQUIRE(succ == fail);
#ifdef _WIN64
switch (succ) {
case memory_order_relaxed:
__v = InterlockedCompareExchangeNoFence64((atomic_int_fast64_t *)obj, desired, *expected);
@ -217,6 +233,9 @@ atomic_compare_exchange_strong_explicit64(atomic_int_fast64_t *obj,
__v = InterlockedCompareExchange64((atomic_int_fast64_t *)obj, desired, *expected);
break;
}
#else
__v = InterlockedCompareExchange64((atomic_int_fast64_t *)obj, desired, *expected);
#endif
__r = (*(expected) == __v);
if (!__r) {
*(expected) = __v;