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Auto-vacuum: Ensure pages to be removed by database truncation are in the journal file. Also fix an sqlite3pager_movepage() bug. (CVS 2074) 

FossilOrigin-Name: 081676e491760a45325e2349b177d6382faab9f5
This commit is contained in:
danielk1977 2004-11-06 12:26:07 +00:00
parent eee46cf35c
commit ef73ee9a46
5 changed files with 78 additions and 53 deletions
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18
manifest
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@ -1,5 +1,5 @@
C Compile\sand\spass\sthe\squick\sregression\stests\swith\sautovacuum\sdisabled.\s(CVS\s2073)
D 2004-11-06T00:02:48
C Auto-vacuum:\sEnsure\spages\sto\sbe\sremoved\sby\sdatabase\struncation\sare\sin\sthe\sjournal\sfile.\sAlso\sfix\san\ssqlite3pager_movepage()\sbug.\s(CVS\s2074)
D 2004-11-06T12:26:08
F Makefile.in c4d2416860f472a1e3393714d0372074197565df
F Makefile.linux-gcc a9e5a0d309fa7c38e7c14d3ecf7690879d3a5457
F README a01693e454a00cc117967e3f9fdab2d4d52e9bc1
@ -29,7 +29,7 @@ F sqlite3.def dbaeb20c153e1d366e8f421b55a573f5dfc00863
F sqlite3.pc.in 985b9bf34192a549d7d370e0f0b6b34a4f61369a
F src/attach.c e49d09dad9f5f9fb10b4b0c1be5a70ae4c45e689
F src/auth.c 3b81f2a42f48a62c2c9c9b0eda31a157c681edea
F src/btree.c 32b5c8d45744d8710475ae99744a0ca9a402d2a0
F src/btree.c 8ae13efe790fc462ee590ba96e1940f4c943fe19
F src/btree.h 861e40b759a195ba63819740e484390012cf81ab
F src/build.c fba59507d36d27effbeba59bdd2a720071b7673a
F src/date.c 34bdb0082db7ec2a83ef00063f7b44e61ee19dad
@ -46,13 +46,13 @@ F src/os.h 5834a404b7c8318dc1928c9fc0137a65c9c0416c
F src/os_common.h 0e7f428ba0a6c40a61bc56c4e96f493231301b73
F src/os_mac.c 7367dab0c44ab0b2c4337e73ac6f6f97f171c2cb
F src/os_mac.h 608fdf39eafa1ce25fc8cb223b8b0a073341d4da
F src/os_test.c d9a21852d170f20adeae6f224d1beba2cb5af8aa
F src/os_test.c 91e5f22dd89491e5e1554820e715805f43fa4ece
F src/os_test.h 6a26a4978492e4bbdbf385554958418ff02db162
F src/os_unix.c 5824b22ba41fe9d514ef9169aac1b5fde73af229
F src/os_unix.h f3097815e041e82e24d92505e1ff61ba24172d13
F src/os_win.c 9482dfc92f289b68205bb2c9315757c7e3946bfb
F src/os_win.h 41a946bea10f61c158ce8645e7646b29d44f122b
F src/pager.c 868c67e4ff8a1785c06caaf483fddb5a95013af0
F src/pager.c 0523c8a122f95b41008b87cae2cc1d368452dbfc
F src/pager.h 9eba8c53dd91eae7f3f90743b2ee242da02a9862
F src/parse.y 8456726833755ecd6dac9bcd8af205c8dc419d01
F src/pragma.c 6a0ae7721e614c5a921e918ab5206d5e654f1a6f
@ -253,7 +253,7 @@ F www/tclsqlite.tcl 560ecd6a916b320e59f2917317398f3d59b7cc25
F www/vdbe.tcl 59288db1ac5c0616296b26dce071c36cb611dfe9
F www/version3.tcl 092a01f5ef430d2c4acc0ae558d74c4bb89638a0
F www/whentouse.tcl fdacb0ba2d39831e8a6240d05a490026ad4c4e4c
P 11dba47e61279bdf3be6f64a6259b877f3bf6155
R 8f5f401812cf89b0176d6494be1ddd1b
U drh
Z 7c63afdfe773d316c41b855a4f0f6dac
P 89b9026a5371f1c5589f04e3b69171ec1f605b7b
R 8ad60b55265f20042b59f34c42d3206d
U danielk1977
Z 6d567165f557419cc4b6243e52dc95f0

2
manifest.uuid
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@ -1 +1 @@
89b9026a5371f1c5589f04e3b69171ec1f605b7b
081676e491760a45325e2349b177d6382faab9f5

4
src/btree.c
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@ -9,7 +9,7 @@
** May you share freely, never taking more than you give.
**
*************************************************************************
** $Id: btree.c,v 1.212 2004/11/06 00:02:48 drh Exp $
** $Id: btree.c,v 1.213 2004/11/06 12:26:08 danielk1977 Exp $
**
** This file implements a external (disk-based) database using BTrees.
** For a detailed discussion of BTrees, refer to
@ -5072,6 +5072,8 @@ static int checkTreePage(
char zContext[100];
char *hit;
sprintf(zContext, "Page %d: ", iPage);
/* Check that the page exists
*/
cur.pBt = pBt = pCheck->pBt;

8
src/os_test.c
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@ -239,10 +239,12 @@ printf("Writing block %d of %s\n", i, pFile->zName);
if( BLOCK_OFFSET(i+1)>nMax ){
len = nMax-BLOCK_OFFSET(i);
}
if( trash ){
sqlite3Randomness(len, p);
if( len>0 ){
if( trash ){
sqlite3Randomness(len, p);
}
rc = sqlite3RealWrite(&pFile->fd, p, len);
}
rc = sqlite3RealWrite(&pFile->fd, p, len);
}
sqliteFree(p);
}

99
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 1.173 2004/11/05 16:37:03 danielk1977 Exp $
** @(#) $Id: pager.c,v 1.174 2004/11/06 12:26:08 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "os.h"
@ -41,6 +41,13 @@
#define TRACE4(X,Y,Z,W)
#endif
#ifdef OS_TEST
#define PAGERID(p) (p->fd->fd.h)
#define FILEHANDLEID(fd) (fd->fd.h)
#else
#define PAGERID(p) (p->fd.h)
#define FILEHANDLEID(fd) (fd.h)
#endif
/*
** The page cache as a whole is always in one of the following
@ -908,7 +915,7 @@ static int pager_playback_one_page(Pager *pPager, OsFile *jfd, int useCksum){
*/
pPg = pager_lookup(pPager, pgno);
assert( pPager->state>=PAGER_EXCLUSIVE || pPg );
TRACE3("PLAYBACK %d page %d\n", pPager->fd.h, pgno);
TRACE3("PLAYBACK %d page %d\n", PAGERID(pPager), pgno);
if( pPager->state>=PAGER_EXCLUSIVE ){
sqlite3OsSeek(&pPager->fd, (pgno-1)*(i64)pPager->pageSize);
rc = sqlite3OsWrite(&pPager->fd, aData, pPager->pageSize);
@ -1037,7 +1044,7 @@ static int pager_reload_cache(Pager *pPager){
if( (int)pPg->pgno <= pPager->origDbSize ){
sqlite3OsSeek(&pPager->fd, pPager->pageSize*(i64)(pPg->pgno-1));
rc = sqlite3OsRead(&pPager->fd, zBuf, pPager->pageSize);
TRACE3("REFETCH %d page %d\n", pPager->fd.h, pPg->pgno);
TRACE3("REFETCH %d page %d\n", PAGERID(pPager), pPg->pgno);
if( rc ) break;
CODEC(pPager, zBuf, pPg->pgno, 2);
}else{
@ -1506,7 +1513,7 @@ int sqlite3pager_open(
sqliteFree(zFullPathname);
return SQLITE_NOMEM;
}
TRACE3("OPEN %d %s\n", fd.h, zFullPathname);
TRACE3("OPEN %d %s\n", FILEHANDLEID(fd), zFullPathname);
pPager->zFilename = (char*)&pPager[1];
pPager->zDirectory = &pPager->zFilename[nameLen+1];
pPager->zJournal = &pPager->zDirectory[nameLen+1];
@ -1693,19 +1700,6 @@ static void unlinkPage(PgHdr *pPg){
/* Unlink from the pgno hash table */
unlinkHashChain(pPager, pPg);
/*
if( pPg->pNextHash ){
pPg->pNextHash->pPrevHash = pPg->pPrevHash;
}
if( pPg->pPrevHash ){
pPg->pPrevHash->pNextHash = pPg->pNextHash;
}else{
int h = pager_hash(pPg->pgno);
assert( pPager->aHash[h]==pPg );
pPager->aHash[h] = pPg->pNextHash;
}
pPg->pNextHash = pPg->pPrevHash = 0;
*/
}
/*
@ -1808,7 +1802,7 @@ int sqlite3pager_close(Pager *pPager){
pNext = pPg->pNextAll;
sqliteFree(pPg);
}
TRACE2("CLOSE %d\n", pPager->fd.h);
TRACE2("CLOSE %d\n", PAGERID(pPager));
sqlite3OsClose(&pPager->fd);
assert( pPager->journalOpen==0 );
/* Temp files are automatically deleted by the OS
@ -1939,7 +1933,7 @@ static int syncJournal(Pager *pPager){
** it as a candidate for rollback.
*/
if( pPager->fullSync ){
TRACE2("SYNC journal of %d\n", pPager->fd.h);
TRACE2("SYNC journal of %d\n", PAGERID(pPager));
rc = sqlite3OsSync(&pPager->jfd);
if( rc!=0 ) return rc;
}
@ -1949,7 +1943,7 @@ static int syncJournal(Pager *pPager){
sqlite3OsSeek(&pPager->jfd, pPager->journalOff);
}
TRACE2("SYNC journal of %d\n", pPager->fd.h);
TRACE2("SYNC journal of %d\n", PAGERID(pPager));
rc = sqlite3OsSync(&pPager->jfd);
if( rc!=0 ) return rc;
pPager->journalStarted = 1;
@ -2054,13 +2048,13 @@ static int pager_write_pagelist(PgHdr *pList){
*/
if( pList->pgno<=pPager->dbSize ){
CODEC(pPager, PGHDR_TO_DATA(pList), pList->pgno, 6);
TRACE3("STORE %d page %d\n", pPager->fd.h, pList->pgno);
TRACE3("STORE %d page %d\n", PAGERID(pPager), pList->pgno);
rc = sqlite3OsWrite(&pPager->fd, PGHDR_TO_DATA(pList), pPager->pageSize);
CODEC(pPager, PGHDR_TO_DATA(pList), pList->pgno, 0);
}
#ifndef NDEBUG
else{
TRACE3("NOSTORE %d page %d\n", pPager->fd.h, pList->pgno);
TRACE3("NOSTORE %d page %d\n", PAGERID(pPager), pList->pgno);
}
#endif
if( rc ) return rc;
@ -2329,7 +2323,7 @@ int sqlite3pager_get(Pager *pPager, Pgno pgno, void **ppPage){
assert( MEMDB==0 );
sqlite3OsSeek(&pPager->fd, (pgno-1)*(i64)pPager->pageSize);
rc = sqlite3OsRead(&pPager->fd, PGHDR_TO_DATA(pPg), pPager->pageSize);
TRACE3("FETCH %d page %d\n", pPager->fd.h, pPg->pgno);
TRACE3("FETCH %d page %d\n", PAGERID(pPager), pPg->pgno);
CODEC(pPager, PGHDR_TO_DATA(pPg), pPg->pgno, 3);
if( rc!=SQLITE_OK ){
i64 fileSize;
@ -2540,7 +2534,7 @@ int sqlite3pager_begin(void *pData, int exFlag){
return rc;
}
pPager->dirtyCache = 0;
TRACE2("TRANSACTION %d\n", pPager->fd.h);
TRACE2("TRANSACTION %d\n", PAGERID(pPager));
if( pPager->useJournal && !pPager->tempFile ){
rc = pager_open_journal(pPager);
}
@ -2620,7 +2614,7 @@ int sqlite3pager_write(void *pData){
u32 saved;
if( MEMDB ){
PgHistory *pHist = PGHDR_TO_HIST(pPg, pPager);
TRACE3("JOURNAL %d page %d\n", pPager->fd.h, pPg->pgno);
TRACE3("JOURNAL %d page %d\n", PAGERID(pPager), pPg->pgno);
assert( pHist->pOrig==0 );
pHist->pOrig = sqliteMallocRaw( pPager->pageSize );
if( pHist->pOrig ){
@ -2637,7 +2631,7 @@ int sqlite3pager_write(void *pData){
rc = sqlite3OsWrite(&pPager->jfd, &((char*)pData)[-4], szPg);
pPager->journalOff += szPg;
TRACE4("JOURNAL %d page %d needSync=%d\n",
pPager->fd.h, pPg->pgno, pPg->needSync);
PAGERID(pPager), pPg->pgno, pPg->needSync);
CODEC(pPager, pData, pPg->pgno, 0);
*(u32*)PGHDR_TO_EXTRA(pPg, pPager) = saved;
if( rc!=SQLITE_OK ){
@ -2657,7 +2651,7 @@ int sqlite3pager_write(void *pData){
}else{
pPg->needSync = !pPager->journalStarted && !pPager->noSync;
TRACE4("APPEND %d page %d needSync=%d\n",
pPager->fd.h, pPg->pgno, pPg->needSync);
PAGERID(pPager), pPg->pgno, pPg->needSync);
}
if( pPg->needSync ){
pPager->needSync = 1;
@ -2679,12 +2673,12 @@ int sqlite3pager_write(void *pData){
if( pHist->pStmt ){
memcpy(pHist->pStmt, PGHDR_TO_DATA(pPg), pPager->pageSize);
}
TRACE3("STMT-JOURNAL %d page %d\n", pPager->fd.h, pPg->pgno);
TRACE3("STMT-JOURNAL %d page %d\n", PAGERID(pPager), pPg->pgno);
}else{
store32bits(pPg->pgno, pPg, -4);
CODEC(pPager, pData, pPg->pgno, 7);
rc = sqlite3OsWrite(&pPager->stfd,((char*)pData)-4, pPager->pageSize+4);
TRACE3("STMT-JOURNAL %d page %d\n", pPager->fd.h, pPg->pgno);
TRACE3("STMT-JOURNAL %d page %d\n", PAGERID(pPager), pPg->pgno);
CODEC(pPager, pData, pPg->pgno, 0);
if( rc!=SQLITE_OK ){
sqlite3pager_rollback(pPager);
@ -2781,7 +2775,7 @@ void sqlite3pager_dont_write(Pager *pPager, Pgno pgno){
** corruption during the next transaction.
*/
}else{
TRACE3("DONT_WRITE page %d of %d\n", pgno, pPager->fd.h);
TRACE3("DONT_WRITE page %d of %d\n", pgno, PAGERID(pPager));
pPg->dirty = 0;
}
}
@ -2807,7 +2801,7 @@ void sqlite3pager_dont_rollback(void *pData){
pPager->aInStmt[pPg->pgno/8] |= 1<<(pPg->pgno&7);
page_add_to_stmt_list(pPg);
}
TRACE3("DONT_ROLLBACK page %d of %d\n", pPg->pgno, pPager->fd.h);
TRACE3("DONT_ROLLBACK page %d of %d\n", pPg->pgno, PAGERID(pPager));
}
if( pPager->stmtInUse && !pPg->inStmt && (int)pPg->pgno<=pPager->stmtSize ){
assert( pPg->inJournal || (int)pPg->pgno>pPager->origDbSize );
@ -2853,7 +2847,7 @@ int sqlite3pager_commit(Pager *pPager){
if( pPager->state<PAGER_RESERVED ){
return SQLITE_ERROR;
}
TRACE2("COMMIT %d\n", pPager->fd.h);
TRACE2("COMMIT %d\n", PAGERID(pPager));
if( MEMDB ){
pPg = pager_get_all_dirty_pages(pPager);
while( pPg ){
@ -2914,7 +2908,7 @@ commit_abort:
*/
int sqlite3pager_rollback(Pager *pPager){
int rc;
TRACE2("ROLLBACK %d\n", pPager->fd.h);
TRACE2("ROLLBACK %d\n", PAGERID(pPager));
if( MEMDB ){
PgHdr *p;
for(p=pPager->pAll; p; p=p->pNextAll){
@ -2929,9 +2923,9 @@ int sqlite3pager_rollback(Pager *pPager){
pHist = PGHDR_TO_HIST(p, pPager);
if( pHist->pOrig ){
memcpy(PGHDR_TO_DATA(p), pHist->pOrig, pPager->pageSize);
TRACE3("ROLLBACK-PAGE %d of %d\n", p->pgno, pPager->fd.h);
TRACE3("ROLLBACK-PAGE %d of %d\n", p->pgno, PAGERID(pPager));
}else{
TRACE3("PAGE %d is clean on %d\n", p->pgno, pPager->fd.h);
TRACE3("PAGE %d is clean on %d\n", p->pgno, PAGERID(pPager));
}
clearHistory(pHist);
p->dirty = 0;
@ -3021,7 +3015,7 @@ int sqlite3pager_stmt_begin(Pager *pPager){
char zTemp[SQLITE_TEMPNAME_SIZE];
assert( !pPager->stmtInUse );
assert( pPager->dbSize>=0 );
TRACE2("STMT-BEGIN %d\n", pPager->fd.h);
TRACE2("STMT-BEGIN %d\n", PAGERID(pPager));
if( MEMDB ){
pPager->stmtInUse = 1;
pPager->stmtSize = pPager->dbSize;
@ -3069,7 +3063,7 @@ stmt_begin_failed:
int sqlite3pager_stmt_commit(Pager *pPager){
if( pPager->stmtInUse ){
PgHdr *pPg, *pNext;
TRACE2("STMT-COMMIT %d\n", pPager->fd.h);
TRACE2("STMT-COMMIT %d\n", PAGERID(pPager));
if( !MEMDB ){
sqlite3OsSeek(&pPager->stfd, 0);
/* sqlite3OsTruncate(&pPager->stfd, 0); */
@ -3101,7 +3095,7 @@ int sqlite3pager_stmt_commit(Pager *pPager){
int sqlite3pager_stmt_rollback(Pager *pPager){
int rc;
if( pPager->stmtInUse ){
TRACE2("STMT-ROLLBACK %d\n", pPager->fd.h);
TRACE2("STMT-ROLLBACK %d\n", PAGERID(pPager));
if( MEMDB ){
PgHdr *pPg;
for(pPg=pPager->pStmt; pPg; pPg=pPg->pNextStmt){
@ -3208,6 +3202,9 @@ static int pager_incr_changecounter(Pager *pPager){
int sqlite3pager_sync(Pager *pPager, const char *zMaster, Pgno nTrunc){
int rc = SQLITE_OK;
TRACE4("DATABASE SYNC: File=%s zMaster=%s nTrunc=%d\n",
pPager->zFilename, zMaster, nTrunc);
/* If this is an in-memory db, or no pages have been written to, or this
** function has already been called, it is a no-op.
*/
@ -3224,6 +3221,25 @@ int sqlite3pager_sync(Pager *pPager, const char *zMaster, Pgno nTrunc){
if( !pPager->setMaster ){
rc = pager_incr_changecounter(pPager);
if( rc!=SQLITE_OK ) goto sync_exit;
#ifndef SQLITE_OMIT_AUTOVACUUM
if( nTrunc!=0 ){
/* If this transaction has made the database smaller, then all pages
** being discarded by the truncation must be written to the journal
** file.
*/
Pgno i;
void *pPage;
for( i=nTrunc+1; i<=pPager->origDbSize; i++ ){
if( !(pPager->aInJournal[i/8] & (1<<(i&7))) ){
rc = sqlite3pager_get(pPager, i, &pPage);
if( rc!=SQLITE_OK ) goto sync_exit;
rc = sqlite3pager_write(pPage);
sqlite3pager_unref(pPage);
if( rc!=SQLITE_OK ) goto sync_exit;
}
}
}
#endif
rc = writeMasterJournal(pPager, zMaster);
if( rc!=SQLITE_OK ) goto sync_exit;
rc = syncJournal(pPager);
@ -3279,10 +3295,12 @@ int sqlite3pager_movepage(Pager *pPager, void *pData, Pgno pgno){
assert( !pPager->stmtInUse );
assert( pPg->nRef>0 );
TRACE4("MOVE %d page %d moves to %d\n", PAGERID(pPager), pPg->pgno, pgno);
/* Unlink pPg from it's hash-chain */
unlinkHashChain(pPager, pPg);
/* If the cache contains a page with page-number pgno exists, remove it
/* If the cache contains a page with page-number pgno, remove it
** from it's hash chain.
*/
pPgOld = pager_lookup(pPager, pgno);
@ -3290,6 +3308,9 @@ int sqlite3pager_movepage(Pager *pPager, void *pData, Pgno pgno){
assert( pPgOld->nRef==0 );
unlinkHashChain(pPager, pPgOld);
pPgOld->dirty = 0;
if( pPgOld->needSync ){
pPg->needSync = 1;
}
}
/* Change the page number for pPg and insert it into the new hash-chain. */