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Clarify some comments. No changes to code. (CVS 5049)

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FossilOrigin-Name: 7f80539225b17a62e4aa09e6d514e3e9e1b22c36
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drh
2008-04-25 12:25:42 +00:00
parent 05a3e474cb
commit 82ed1e5b37
4 changed files with 30 additions and 11 deletions
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11
src/pager.c
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@@ -18,7 +18,7 @@
** file simultaneously, or one process from reading the database while
** another is writing.
**
** @(#) $Id: pager.c,v 1.434 2008/04/24 12:37:40 danielk1977 Exp $
** @(#) $Id: pager.c,v 1.435 2008/04/25 12:25:42 drh Exp $
*/
#ifndef SQLITE_OMIT_DISKIO
#include "sqliteInt.h"
@@ -3084,6 +3084,15 @@ static PgHdr *pager_get_all_dirty_pages(Pager *pPager){
** database with the same name. Just delete the journal.
**
** Return negative if unable to determine the status of the journal.
**
** This routine does not open the journal file to examine its
** content. Hence, the journal might contain the name of a master
** journal file that has been deleted, and hence not be hot. Or
** the header of the journal might be zeroed out. This routine
** does not discover these cases of a non-hot journal - if the
** journal file exists and is not empty this routine assumes it
** is hot. The pager_playback() routine will discover that the
** journal file is not really hot and will no-op.
*/
static int hasHotJournal(Pager *pPager){
sqlite3_vfs *pVfs = pPager->pVfs;