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MDEV-13728 - Import MySQL 5.7 atomic operations for MSVC and Solaris

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gcc_sync.h, solaris.h, generic-msvc.h copied verbatim.
This commit is contained in:
Sergey Vojtovich
2017-09-04 15:40:21 +04:00
parent 62fb022110
commit 1029b22feb
6 changed files with 287 additions and 244 deletions
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20
include/atomic/gcc_builtins.h
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@@ -1,7 +1,7 @@
#ifndef ATOMIC_GCC_BUILTINS_INCLUDED
#define ATOMIC_GCC_BUILTINS_INCLUDED
/* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
/* Copyright (c) 2017 MariaDB Foundation
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -16,8 +16,6 @@
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#if defined(HAVE_GCC_C11_ATOMICS)
#define MY_ATOMIC_MODE "gcc-atomics-smp"
#define MY_MEMORY_ORDER_RELAXED __ATOMIC_RELAXED
#define MY_MEMORY_ORDER_CONSUME __ATOMIC_CONSUME
@@ -76,21 +74,5 @@
__atomic_compare_exchange_n((P), (E), (D), 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)
#define my_atomic_casptr(P, E, D) \
__atomic_compare_exchange_n((P), (E), (D), 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)
#else
#define MY_ATOMIC_MODE "gcc-builtins-smp"
#define make_atomic_load_body(S) \
ret= __sync_fetch_and_or(a, 0);
#define make_atomic_store_body(S) \
(void) __sync_lock_test_and_set(a, v);
#define make_atomic_add_body(S) \
v= __sync_fetch_and_add(a, v);
#define make_atomic_fas_body(S) \
v= __sync_lock_test_and_set(a, v);
#define make_atomic_cas_body(S) \
int ## S sav; \
int ## S cmp_val= *cmp; \
sav= __sync_val_compare_and_swap(a, cmp_val, set);\
if (!(ret= (sav == cmp_val))) *cmp= sav
#endif
#endif /* ATOMIC_GCC_BUILTINS_INCLUDED */