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[Qemu-devel] [PATCH v2 02/27] atomics: add atomic_op_fetch variants
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH v2 02/27] atomics: add atomic_op_fetch variants |
Date: |
Fri, 1 Jul 2016 10:04:28 -0700 |
From: "Emilio G. Cota" <address@hidden>
This paves the way for upcoming work.
Signed-off-by: Emilio G. Cota <address@hidden>
Message-Id: <address@hidden>
---
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. */
--
2.5.5
- [Qemu-devel] [PATCH v2 00/27] cmpxchg-based emulation of atomics, Richard Henderson, 2016/07/01
- [Qemu-devel] [PATCH v2 04/27] int128: Use __int128 if available, Richard Henderson, 2016/07/01
- [Qemu-devel] [PATCH v2 03/27] exec: Avoid direct references to Int128 parts, Richard Henderson, 2016/07/01
- [Qemu-devel] [PATCH v2 02/27] atomics: add atomic_op_fetch variants,
Richard Henderson <=
- [Qemu-devel] [PATCH v2 08/27] HACK: Always enable parallel_cpus, Richard Henderson, 2016/07/01
- [Qemu-devel] [PATCH v2 01/27] atomics: add atomic_xor, Richard Henderson, 2016/07/01
- [Qemu-devel] [PATCH v2 11/27] target-i386: emulate LOCK'ed cmpxchg using cmpxchg helpers, Richard Henderson, 2016/07/01
- [Qemu-devel] [PATCH v2 06/27] int128: Use complex numbers if advisable, Richard Henderson, 2016/07/01
- [Qemu-devel] [PATCH v2 10/27] tcg: Add atomic128 helpers, Richard Henderson, 2016/07/01