database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-30 21:42:05 +03:00
Code Activity

Adjust rename on Win32 to only link to temp name while holding lock,

Browse Source 
then release locks and loop over renaming to active file name.
This commit is contained in:
Bruce Momjian
2004-02-02 00:17:23 +00:00
parent e5e5a323ca
commit d9d2ca8e8e
5 changed files with 67 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
src/backend/utils/cache/relcache.c vendored
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/cache/relcache.c,v 1.195 2004/01/26 22:35:32 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/cache/relcache.c,v 1.196 2004/02/02 00:17:21 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -3358,33 +3358,28 @@ write_relcache_init_file(void)
/*
* OK, rename the temp file to its final name, deleting any
* previously-existing init file.
*
* Note: a failure here is possible under Cygwin, if some other
* backend is holding open an unlinked-but-not-yet-gone init file.
* So treat this as a noncritical failure.
*/
if (rename(tempfilename, finalfilename) < 0)
#if defined(WIN32) || defined(CYGWIN)
rename(tempfilename, finalfilename);
LWLockRelease(RelCacheInitLock);
#else
{
ereport(WARNING,
(errcode_for_file_access(),
errmsg("could not rename relation-cache initialization file \"%s\" to \"%s\": %m",
tempfilename, finalfilename),
errdetail("Continuing anyway, but there's something wrong.")));
/*
* If we fail, try to clean up the useless temp file; don't
* bother to complain if this fails too.
*/
unlink(tempfilename);
char finalfilename_new[MAXPGPATH];
snprintf(finalfilename_new, sizeof(finalfilename_new), "%s.new", finalfilename);
rename(tempfilename, finalfilename_new);
LWLockRelease(RelCacheInitLock);
/* Rename to active file after lock is released */
rename(finalfilename_new, finalfilename);
}
#endif
}
else
{
/* Delete the already-obsolete temp file */
unlink(tempfilename);
LWLockRelease(RelCacheInitLock);
}
LWLockRelease(RelCacheInitLock);
}
/*