diff options
| author | dan <dan@noemail.net> | 2020-03-30 13:35:05 +0000 |
|---|---|---|
| committer | dan <dan@noemail.net> | 2020-03-30 13:35:05 +0000 |
| commit | 892edb69c4f1071b682d88d13be45f7faa980f63 (patch) | |
| tree | 8bceda36b2f53eb1fa1501a296a04cd6566bb403 /src/sqliteInt.h | |
| parent | 3e42b9917566acdc67a04b08dbf8fc3227fc785d (diff) | |
| download | sqlite-892edb69c4f1071b682d88d13be45f7faa980f63.tar.gz sqlite-892edb69c4f1071b682d88d13be45f7faa980f63.zip | |
Use __atomic_load_n() and __atomic_store_n() for a few more things where they are available.
FossilOrigin-Name: a49f8ec552bede7da731e0571ccf49de1a30e7be3a5673150436c8b411ba6ffc
Diffstat (limited to 'src/sqliteInt.h')
| -rw-r--r-- | src/sqliteInt.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/sqliteInt.h b/src/sqliteInt.h index 489768bbc..d08c7ce1e 100644 --- a/src/sqliteInt.h +++ b/src/sqliteInt.h @@ -187,6 +187,21 @@ #endif /* +** WAL mode depends on atomic aligned 32-bit loads and stores in a few +** places. The following macros try to make this explicit. +*/ +#ifndef __has_feature +# define __has_feature(x) 0 /* compatibility with non-clang compilers */ +#endif +#if GCC_VERSION>=4007000 || __has_feature(c_atomic) +# define AtomicLoad(PTR) __atomic_load_n((PTR),__ATOMIC_RELAXED) +# define AtomicStore(PTR,VAL) __atomic_store_n((PTR),(VAL),__ATOMIC_RELAXED) +#else +# define AtomicLoad(PTR) (*(PTR)) +# define AtomicStore(PTR,VAL) (*(PTR) = (VAL)) +#endif + +/* ** Include standard header files as necessary */ #ifdef HAVE_STDINT_H |