Atomic ops: add 'fetch_and_add_uint32' op.

Needed for next commit.

3 files changed, 17 insertions, 0 deletions

diff --git a/intern/atomic/atomic_ops.h b/intern/atomic/atomic_ops.h
index e4e1bdc1c09..0bc7905aa07 100644
--- a/intern/atomic/atomic_ops.h
+++ b/intern/atomic/atomic_ops.h
@@ -86,6 +86,8 @@ ATOMIC_INLINE uint32_t atomic_add_uint32(uint32_t *p, uint32_t x);
 ATOMIC_INLINE uint32_t atomic_sub_uint32(uint32_t *p, uint32_t x);
 ATOMIC_INLINE uint32_t atomic_cas_uint32(uint32_t *v, uint32_t old, uint32_t _new);
 
+ATOMIC_INLINE uint32_t atomic_fetch_and_add_uint32(uint32_t *p, uint32_t x);
+
 ATOMIC_INLINE uint8_t atomic_fetch_and_or_uint8(uint8_t *p, uint8_t b);
 ATOMIC_INLINE uint8_t atomic_fetch_and_and_uint8(uint8_t *p, uint8_t b);
 
diff --git a/intern/atomic/intern/atomic_ops_msvc.h b/intern/atomic/intern/atomic_ops_msvc.h
index bd9186e7864..15ddda246d9 100644
--- a/intern/atomic/intern/atomic_ops_msvc.h
+++ b/intern/atomic/intern/atomic_ops_msvc.h
@@ -76,6 +76,11 @@ ATOMIC_INLINE uint32_t atomic_cas_uint32(uint32_t *v, uint32_t old, uint32_t _ne
 	return InterlockedCompareExchange((long *)v, _new, old);
 }
 
+ATOMIC_INLINE uint32_t atomic_fetch_and_add_uint32(uint32_t *p, uint32_t x)
+{
+	return InterlockedExchangeAdd(p, x);
+}
+
 /******************************************************************************/
 /* 8-bit operations. */
 
diff --git a/intern/atomic/intern/atomic_ops_unix.h b/intern/atomic/intern/atomic_ops_unix.h
index 05d0fbf1856..bf54750ea0d 100644
--- a/intern/atomic/intern/atomic_ops_unix.h
+++ b/intern/atomic/intern/atomic_ops_unix.h
@@ -162,6 +162,16 @@ ATOMIC_INLINE uint32_t atomic_cas_uint32(uint32_t *v, uint32_t old, uint32_t _ne
 #  error "Missing implementation for 32-bit atomic operations"
 #endif
 
+#if (defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4) || defined(JE_FORCE_SYNC_COMPARE_AND_SWAP_4))
+ATOMIC_INLINE uint32_t atomic_fetch_and_add_uint32(uint32_t *p, uint32_t x)
+{
+	return __sync_fetch_and_add(p, x);
+}
+
+#else
+#  error "Missing implementation for 32-bit atomic operations"
+#endif
+
 /******************************************************************************/
 /* 8-bit operations. */
 #if (defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1) || defined(JE_FORCE_SYNC_COMPARE_AND_SWAP_1))