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| author | Mikael Ronstrom <mikael@mysql.com> | 2009-12-19 08:46:37 +0100 |
|---|---|---|
| committer | Mikael Ronstrom <mikael@mysql.com> | 2009-12-19 08:46:37 +0100 |
| commit | eddd1a94a707f6a000b5ac24d6f6115f102804e3 (patch) | |
| tree | 4e98344b28ec36f63cdd34fe65b2f166769ab5ee /include/atomic | |
| parent | efc20b24fc91a54d48b8194489f679cffe828666 (diff) | |
| download | mariadb-git-eddd1a94a707f6a000b5ac24d6f6115f102804e3.tar.gz | |
Make choices of atomic implementation based on highest stability
Diffstat (limited to 'include/atomic')
| -rw-r--r-- | include/atomic/nolock.h | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/include/atomic/nolock.h b/include/atomic/nolock.h index b2eaea34095..f1eaf8c65ab 100644 --- a/include/atomic/nolock.h +++ b/include/atomic/nolock.h @@ -25,17 +25,29 @@ # else # define LOCK_prefix "lock" # endif - -# ifdef HAVE_GCC_ATOMIC_BUILTINS -# include "gcc_builtins.h" -# elif __GNUC__ -# include "x86-gcc.h" -# elif defined(_MSC_VER) +/* + We choose implementation as follows: + ------------------------------------ + On Windows using Visual C++ the native implementation should be + preferrable. When using gcc we prefer the native x86 implementation, + we prefer the Solaris implementation before the gcc because of + stability preference, we choose gcc implementation if nothing else + works on gcc. If neither Visual C++ or gcc we still choose the + Solaris implementation on Solaris (mainly for SunStudio compiles. +*/ +# if defined(_MSV_VER) # include "generic-msvc.h" +# elif __GNUC__ +# if defined(__i386__) || defined(__x86_64__) +# include "x86-gcc.h" +# elif defined(HAVE_SOLARIS_ATOMIC) +# include "solaris.h" +# elif defined(HAVE_GCC_ATOMIC_BUILTINS) +# include "gcc_builtins.h" +# endif +# elif defined(HAVE_SOLARIS_ATOMIC) +# include "solaris.h" # endif -#elif defined(HAVE_SOLARIS_ATOMIC) -#include "solaris.h" -#endif #if defined(make_atomic_cas_body) || defined(MY_ATOMICS_MADE) /* |