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Test auto-vacuum mode for crash-proofness. Also fix a bug related to the same. (CVS 2077)

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FossilOrigin-Name: 839ad771a6e781426c0fd624a4d1c91a5fcf8546
This commit is contained in:
danielk1977
2004-11-08 09:26:09 +00:00
parent 599fcbae56
commit 94daf7fdff
6 changed files with 108 additions and 23 deletions
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28
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 1.175 2004/11/08 07:13:14 danielk1977 Exp $
** @(#) $Id: pager.c,v 1.176 2004/11/08 09:26:10 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "os.h"
@@ -34,7 +34,7 @@
#define TRACE2(X,Y) sqlite3DebugPrintf(X,Y)
#define TRACE3(X,Y,Z) sqlite3DebugPrintf(X,Y,Z)
#define TRACE4(X,Y,Z,W) sqlite3DebugPrintf(X,Y,Z,W)
#define TRACE5(X,Y,Z,W,V) sqlite3DebugPrintf(X,Y,Z,W, V)
#define TRACE5(X,Y,Z,W,V) sqlite3DebugPrintf(X,Y,Z,W,V)
#else
#define TRACE1(X)
#define TRACE2(X,Y)
@@ -3303,6 +3303,7 @@ int sqlite3pager_movepage(Pager *pPager, void *pData, Pgno pgno){
PgHdr *pPg = DATA_TO_PGHDR(pData);
PgHdr *pPgOld;
int h;
Pgno needSyncPgno = 0;
assert( !pPager->stmtInUse );
assert( pPg->nRef>0 );
@@ -3310,6 +3311,12 @@ int sqlite3pager_movepage(Pager *pPager, void *pData, Pgno pgno){
TRACE5("MOVE %d page %d (needSync=%d) moves to %d\n",
PAGERID(pPager), pPg->pgno, pPg->needSync, pgno);
if( pPg->needSync ){
needSyncPgno = pPg->pgno;
assert( pPg->inJournal );
assert( pPg->dirty );
}
/* Unlink pPg from it's hash-chain */
unlinkHashChain(pPager, pPg);
@@ -3342,6 +3349,23 @@ int sqlite3pager_movepage(Pager *pPager, void *pData, Pgno pgno){
pPg->dirty = 1;
pPager->dirtyCache = 1;
if( needSyncPgno ){
/* If needSyncPgno is non-zero, then the journal file needs to be
** sync()ed before any data is written to database file page needSyncPgno.
** Currently, no such page exists in the page-cache and the
** Pager.aInJournal bit has been set. This needs to be remedied by loading
** the page into the pager-cache and setting the PgHdr.needSync flag.
*/
int rc;
void *pNeedSync;
rc = sqlite3pager_get(pPager, needSyncPgno, &pNeedSync);
if( rc!=SQLITE_OK ) return rc;
DATA_TO_PGHDR(pNeedSync)->needSync = 1;
DATA_TO_PGHDR(pNeedSync)->inJournal = 1;
DATA_TO_PGHDR(pNeedSync)->dirty = 1;
sqlite3pager_unref(pNeedSync);
}
return SQLITE_OK;
}
#endif