[Qemu-devel] [RFC 08/30] atomics: add atomic_op_fetch variants

From: "Emilio G. Cota" <cota@braap.org>
To: QEMU Developers <qemu-devel@nongnu.org>,
	MTTCG Devel <mttcg@listserver.greensocs.com>
Cc: "Alex Bennée" <alex.bennee@linaro.org>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Richard Henderson" <rth@twiddle.net>,
	"Sergey Fedorov" <serge.fdrv@gmail.com>,
	"Alvise Rigo" <a.rigo@virtualopensystems.com>,
	"Peter Maydell" <peter.maydell@linaro.org>
Subject: [Qemu-devel] [RFC 08/30] atomics: add atomic_op_fetch variants
Date: Mon, 27 Jun 2016 15:01:54 -0400	[thread overview]
Message-ID: <1467054136-10430-9-git-send-email-cota@braap.org> (raw)
In-Reply-To: <1467054136-10430-1-git-send-email-cota@braap.org>

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(+)

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.  */
-- 
2.5.0
