diff options
Diffstat (limited to 'src/backend/storage/file/fd.c')
| -rw-r--r-- | src/backend/storage/file/fd.c | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/src/backend/storage/file/fd.c b/src/backend/storage/file/fd.c index 1db54650eef..81ba3edbbec 100644 --- a/src/backend/storage/file/fd.c +++ b/src/backend/storage/file/fd.c @@ -7,7 +7,7 @@ * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/storage/file/fd.c,v 1.115 2004/12/31 22:00:51 pgsql Exp $ + * $PostgreSQL: pgsql/src/backend/storage/file/fd.c,v 1.116 2005/05/20 14:53:26 momjian Exp $ * * NOTES: * @@ -232,11 +232,27 @@ static void RemovePgTempFilesInDir(const char *tmpdirname); /* - * pg_fsync --- same as fsync except does nothing if enableFsync is off + * pg_fsync --- do fsync with or without writethrough */ int pg_fsync(int fd) { +#ifndef HAVE_FSYNC_WRITETHROUGH_ONLY + if (sync_method != SYNC_METHOD_FSYNC_WRITETHROUGH) + return pg_fsync_no_writethrough(fd); + else +#endif + return pg_fsync_writethrough(fd); +} + + +/* + * pg_fsync_no_writethrough --- same as fsync except does nothing if + * enableFsync is off + */ +int +pg_fsync_no_writethrough(int fd) +{ if (enableFsync) return fsync(fd); else @@ -244,6 +260,24 @@ pg_fsync(int fd) } /* + * pg_fsync_writethrough + */ +int +pg_fsync_writethrough(int fd) +{ + if (enableFsync) +#ifdef WIN32 + return _commit(fd); +#elif defined(__darwin__) + return (fcntl(fd, F_FULLFSYNC, 0) == -1) ? -1 : 0; +#else + return -1; +#endif + else + return 0; +} + +/* * pg_fdatasync --- same as fdatasync except does nothing if enableFsync is off * * Not all platforms have fdatasync; treat as fsync if not available. |