diff options
| author | Mikael Ronstrom <mikael@mysql.com> | 2009-10-09 14:21:29 +0200 |
|---|---|---|
| committer | Mikael Ronstrom <mikael@mysql.com> | 2009-10-09 14:21:29 +0200 |
| commit | a4785fc4a2abeb3f8fbc253b78f558540b949482 (patch) | |
| tree | b01f63d310ec7286d7af99b941db923a3e02efb2 /include/atomic/gcc_builtins.h | |
| parent | ee696e4163354b85c60c68cb791005fa127abcea (diff) | |
| download | mariadb-git-a4785fc4a2abeb3f8fbc253b78f558540b949482.tar.gz | |
Moved atomics from 6.0 codebase to prepare for using atomic increments in places where LOCK_thread_count previously was used
Diffstat (limited to 'include/atomic/gcc_builtins.h')
| -rw-r--r-- | include/atomic/gcc_builtins.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/include/atomic/gcc_builtins.h b/include/atomic/gcc_builtins.h index 509701b30a5..100ff80cacd 100644 --- a/include/atomic/gcc_builtins.h +++ b/include/atomic/gcc_builtins.h @@ -1,3 +1,6 @@ +#ifndef ATOMIC_GCC_BUILTINS_INCLUDED +#define ATOMIC_GCC_BUILTINS_INCLUDED + /* Copyright (C) 2008 MySQL AB This program is free software; you can redistribute it and/or modify @@ -15,7 +18,7 @@ #define make_atomic_add_body(S) \ v= __sync_fetch_and_add(a, v); -#define make_atomic_swap_body(S) \ +#define make_atomic_fas_body(S) \ v= __sync_lock_test_and_set(a, v); #define make_atomic_cas_body(S) \ int ## S sav; \ @@ -25,9 +28,14 @@ #ifdef MY_ATOMIC_MODE_DUMMY #define make_atomic_load_body(S) ret= *a #define make_atomic_store_body(S) *a= v +#define MY_ATOMIC_MODE "gcc-builtins-up" + #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); #endif + +#endif /* ATOMIC_GCC_BUILTINS_INCLUDED */ |