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| author | Mikael Ronstrom <mikael@mysql.com> | 2008-10-13 22:03:12 +0200 |
|---|---|---|
| committer | Mikael Ronstrom <mikael@mysql.com> | 2008-10-13 22:03:12 +0200 |
| commit | e82dac8dab6215e71ae362b04415142622fb0995 (patch) | |
| tree | 23d558b2aceb008e4d8a9df706ae32017760d722 /include/my_atomic.h | |
| parent | 9daa56fd5ce3ccd33c32b5a505ac1d2b2c437460 (diff) | |
| download | mariadb-git-e82dac8dab6215e71ae362b04415142622fb0995.tar.gz | |
Performance patch: Mysql atomic patch
Diffstat (limited to 'include/my_atomic.h')
| -rw-r--r-- | include/my_atomic.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/include/my_atomic.h b/include/my_atomic.h index ed439e5fe87..03f7d081981 100644 --- a/include/my_atomic.h +++ b/include/my_atomic.h @@ -18,13 +18,21 @@ #define intptr void * #ifndef MY_ATOMIC_MODE_RWLOCKS +/* + * Attempt to do atomic ops without locks + */ #include "atomic/nolock.h" #endif -#ifndef make_atomic_cas_body +#ifndef MY_ATOMIC_NOLOCK +/* + * Have to use rw-locks for atomic ops + */ #include "atomic/rwlock.h" #endif +#ifndef MY_ATOMICS_MADE + #ifndef make_atomic_add_body #define make_atomic_add_body(S) \ int ## S tmp=*a; \ @@ -91,7 +99,7 @@ extern int ## S my_atomic_load ## S(int ## S volatile *a); #define make_atomic_store(S) \ extern void my_atomic_store ## S(int ## S volatile *a, int ## S v); -#endif +#endif /* HAVE_INLINE */ make_atomic_cas( 8) make_atomic_cas(16) @@ -129,6 +137,8 @@ make_atomic_swap(ptr) #undef make_atomic_swap_body #undef intptr +#endif /* MY_ATOMICS_MADE */ + #ifdef _atomic_h_cleanup_ #include _atomic_h_cleanup_ #undef _atomic_h_cleanup_ |