Henri Verbeet : vkd3d-common: Introduce vkd3d_atomic_decrement_u32().

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: 9228e131557c78119951ee423deb260d3262e01b
URL:    https://gitlab.winehq.org/wine/vkd3d/-/commit/9228e131557c78119951ee423deb26...

Author: Henri Verbeet 
Date:   Thu Jan 18 19:50:00 2024 +0100

vkd3d-common: Introduce vkd3d_atomic_decrement_u32().

---

include/private/vkd3d_common.h | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/include/private/vkd3d_common.h b/include/private/vkd3d_common.h
index 6c8f8eed..46090eac 100644
--- a/include/private/vkd3d_common.h
+++ b/include/private/vkd3d_common.h
@@ -294,6 +294,11 @@ static inline uint64_t vkd3d_atomic_increment_u64(uint64_t volatile *x)
     return vkd3d_atomic_add_fetch_u64(x, 1);
 }

+static inline uint32_t vkd3d_atomic_decrement_u32(uint32_t volatile *x)
+{
+    return vkd3d_atomic_add_fetch_u32(x, ~0u);
+}
+
 static inline uint32_t vkd3d_atomic_increment_u32(uint32_t volatile *x)
 {
     return vkd3d_atomic_add_fetch_u32(x, 1);
@@ -305,15 +310,10 @@ static inline LONG InterlockedIncrement(LONG volatile *x)
     return vkd3d_atomic_increment_u32((uint32_t *)x);
 }

-# if HAVE_SYNC_SUB_AND_FETCH
 static inline LONG InterlockedDecrement(LONG volatile *x)
 {
-    return __sync_sub_and_fetch(x, 1);
+    return vkd3d_atomic_decrement_u32((uint32_t *)x);
 }
-# else
-#  error "InterlockedDecrement() not implemented for this platform"
-# endif
-
 #endif  /* _WIN32 */

static inline void vkd3d_parse_version(const char *version, int *major, int *minor)