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Re: [Qemu-devel] [PATCH v2 02/27] atomics: add atomic_op_fetch variants
From: |
Alex Bennée |
Subject: |
Re: [Qemu-devel] [PATCH v2 02/27] atomics: add atomic_op_fetch variants |
Date: |
Thu, 11 Aug 2016 18:20:01 +0100 |
User-agent: |
mu4e 0.9.17; emacs 25.1.4 |
Richard Henderson <address@hidden> writes:
> 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>
Reviewed-by: Alex Bennée <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. */
--
Alex Bennée
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