diff options
Diffstat (limited to 'src/include/access/xlogdefs.h')
| -rw-r--r-- | src/include/access/xlogdefs.h | 22 |
1 files changed, 3 insertions, 19 deletions
diff --git a/src/include/access/xlogdefs.h b/src/include/access/xlogdefs.h index a47e3eeb1f5..810cd1fd86a 100644 --- a/src/include/access/xlogdefs.h +++ b/src/include/access/xlogdefs.h @@ -69,28 +69,12 @@ typedef uint16 RepOriginId; * are available on the current platform, and to choose an appropriate * default method. We assume that fsync() is always available, and that * configure determined whether fdatasync() is. + * + * Note that we define our own O_DSYNC on Windows, but not O_SYNC. */ -#if defined(O_SYNC) -#define OPEN_SYNC_FLAG O_SYNC -#elif defined(O_FSYNC) -#define OPEN_SYNC_FLAG O_FSYNC -#endif - -#if defined(O_DSYNC) -#if defined(OPEN_SYNC_FLAG) -/* O_DSYNC is distinct? */ -#if O_DSYNC != OPEN_SYNC_FLAG -#define OPEN_DATASYNC_FLAG O_DSYNC -#endif -#else /* !defined(OPEN_SYNC_FLAG) */ -/* Win32 only has O_DSYNC */ -#define OPEN_DATASYNC_FLAG O_DSYNC -#endif -#endif - #if defined(PLATFORM_DEFAULT_SYNC_METHOD) #define DEFAULT_SYNC_METHOD PLATFORM_DEFAULT_SYNC_METHOD -#elif defined(OPEN_DATASYNC_FLAG) +#elif defined(O_DSYNC) && (!defined(O_SYNC) || O_DSYNC != O_SYNC) #define DEFAULT_SYNC_METHOD SYNC_METHOD_OPEN_DSYNC #elif defined(HAVE_FDATASYNC) #define DEFAULT_SYNC_METHOD SYNC_METHOD_FDATASYNC |