database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-10-25 20:58:26 +03:00
Code Activity

Add support and documentation for the fullfsync pragma. Also include

Browse Source 
some other unrelated documentation updates. (CVS 3080)

FossilOrigin-Name: f2069d0bf3161591535e68b7389792e9cb7fe043
This commit is contained in:
drh
2006-02-11 01:25:50 +00:00
parent 78aecb7250
commit ac530b1ab4
15 changed files with 120 additions and 73 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
src/os_unix.c
View File

@@ -981,6 +981,17 @@ int sqlite3_fullsync_count = 0;
# define fdatasync fsync
#endif
/*
** Define HAVE_FULLFSYNC to 0 or 1 depending on whether or not
** the F_FULLFSYNC macro is defined. F_FULLFSYNC is currently
** only available on Mac OS X. But that could change.
*/
#ifdef F_FULLFSYNC
# define HAVE_FULLFSYNC 1
#else
# define HAVE_FULLFSYNC 0
#endif
/*
** The fsync() system call does not work as advertised on many
@@ -1012,7 +1023,7 @@ static int full_fsync(int fd, int fullSync, int dataOnly){
rc = SQLITE_OK;
#else
#ifdef F_FULLFSYNC
#if HAVE_FULLFSYNC
if( fullSync ){
rc = fcntl(fd, F_FULLFSYNC, 0);
}else{
@@ -1057,10 +1068,16 @@ static int unixSync(OsFile *id, int dataOnly){
return SQLITE_IOERR;
}
if( pFile->dirfd>=0 ){
TRACE2("DIRSYNC %-3d\n", pFile->dirfd);
TRACE4("DIRSYNC %-3d (have_fullfsync=%d fullsync=%d)\n", pFile->dirfd,
HAVE_FULLFSYNC, pFile->fullSync);
#ifndef SQLITE_DISABLE_DIRSYNC
if( full_fsync(pFile->dirfd, pFile->fullSync, 0) ){
/* We have received multiple reports of fsync() returning
/* The directory sync is only attempted if full_fsync is
** turned off or unavailable. If a full_fsync occurred above,
** then the directory sync is superfluous.
*/
if( (!HAVE_FULLFSYNC || !pFile->fullSync) && full_fsync(pFile->dirfd,0,0) ){
/*
** We have received multiple reports of fsync() returning
** errors when applied to directories on certain file systems.
** A failed directory sync is not a big deal. So it seems
** better to ignore the error. Ticket #1657