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| author |   jturner <jturner@openbsd.org> | 2015-12-23 20:07:36 +0000 |
|---|---|---|
| committer | jturner <jturner@openbsd.org> | 2015-12-23 20:07:36 +0000 |
| commit | 454f2601b89e8c6c8f927b542b09b36ffb6763a8 (patch) | |
| tree | 3aeb7f1535c5a957952029d1542c4f4ecd85a695 /lib/libsqlite3/src/mutex_w32.c | |
| parent | Do undo. (diff) | |
| download | wireguard-openbsd-454f2601b89e8c6c8f927b542b09b36ffb6763a8.tar.xz wireguard-openbsd-454f2601b89e8c6c8f927b542b09b36ffb6763a8.zip | |
Update sqlite3 to 3.9.2. Bump major, regen .pc and header. Changes
available here: http://sqlite.org/changes.html
Tested in bulk by aja@. ok landry@
Diffstat (limited to 'lib/libsqlite3/src/mutex_w32.c')
| -rw-r--r-- | lib/libsqlite3/src/mutex_w32.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/lib/libsqlite3/src/mutex_w32.c b/lib/libsqlite3/src/mutex_w32.c index fc943acaa0c..9570bdc0bf4 100644 --- a/lib/libsqlite3/src/mutex_w32.c +++ b/lib/libsqlite3/src/mutex_w32.c @@ -78,6 +78,24 @@ static int winMutexNotheld(sqlite3_mutex *p){ #endif /* +** Try to provide a memory barrier operation, needed for initialization +** and also for the xShmBarrier method of the VFS in cases when SQLite is +** compiled without mutexes (SQLITE_THREADSAFE=0). +*/ +void sqlite3MemoryBarrier(void){ +#if defined(SQLITE_MEMORY_BARRIER) + SQLITE_MEMORY_BARRIER; +#elif defined(__GNUC__) + __sync_synchronize(); +#elif !defined(SQLITE_DISABLE_INTRINSIC) && \ + defined(_MSC_VER) && _MSC_VER>=1300 + _ReadWriteBarrier(); +#elif defined(MemoryBarrier) + MemoryBarrier(); +#endif +} + +/* ** Initialize and deinitialize the mutex subsystem. */ static sqlite3_mutex winMutex_staticMutexes[] = { |