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[RFC,08/30] atomics: add atomic_op_fetch variants

Message ID 1467054136-10430-9-git-send-email-cota@braap.org
State New
Headers show

Commit Message

Emilio Cota June 27, 2016, 7:01 p.m. UTC 
This paves the way for upcoming work.

Signed-off-by: Emilio G. Cota <cota@braap.org>
---
 include/qemu/atomic.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
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Patch

diff --git a/include/qemu/atomic.h b/include/qemu/atomic.h
index a5531da..d75bfde 100644
--- a/include/qemu/atomic.h
+++ b/include/qemu/atomic.h
@@ -163,6 +163,14 @@ 
 #define atomic_fetch_or(ptr, n)  __atomic_fetch_or(ptr, n, __ATOMIC_SEQ_CST)
 #define atomic_fetch_xor(ptr, n) __atomic_fetch_xor(ptr, n, __ATOMIC_SEQ_CST)
 
+#define atomic_inc_fetch(ptr)    __atomic_add_fetch(ptr, 1, __ATOMIC_SEQ_CST)
+#define atomic_dec_fetch(ptr)    __atomic_sub_fetch(ptr, 1, __ATOMIC_SEQ_CST)
+#define atomic_add_fetch(ptr, n) __atomic_add_fetch(ptr, n, __ATOMIC_SEQ_CST)
+#define atomic_sub_fetch(ptr, n) __atomic_sub_fetch(ptr, n, __ATOMIC_SEQ_CST)
+#define atomic_and_fetch(ptr, n) __atomic_and_fetch(ptr, n, __ATOMIC_SEQ_CST)
+#define atomic_or_fetch(ptr, n)  __atomic_or_fetch(ptr, n, __ATOMIC_SEQ_CST)
+#define atomic_xor_fetch(ptr, n) __atomic_xor_fetch(ptr, n, __ATOMIC_SEQ_CST)
+
 /* And even shorter names that return void.  */
 #define atomic_inc(ptr)    ((void) __atomic_fetch_add(ptr, 1, __ATOMIC_SEQ_CST))
 #define atomic_dec(ptr)    ((void) __atomic_fetch_sub(ptr, 1, __ATOMIC_SEQ_CST))
@@ -358,6 +366,15 @@ 
 #define atomic_fetch_and       __sync_fetch_and_and
 #define atomic_fetch_or        __sync_fetch_and_or
 #define atomic_fetch_xor       __sync_fetch_and_xor
+
+#define atomic_inc_fetch(ptr)  __sync_add_and_fetch(ptr, 1)
+#define atomic_dec_fetch(ptr)  __sync_add_and_fetch(ptr, -1)
+#define atomic_add_fetch       __sync_add_and_fetch
+#define atomic_sub_fetch       __sync_sub_and_fetch
+#define atomic_and_fetch       __sync_and_and_fetch
+#define atomic_or_fetch        __sync_or_and_fetch
+#define atomic_xor_fetch       __sync_xor_and_fetch
+
 #define atomic_cmpxchg         __sync_val_compare_and_swap
 
 /* And even shorter names that return void.  */