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Overview
| Comment: | Two more places where logging of freelist trunk pages is needed. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | experimentalIoLog |
| Files: | files | file ages | folders |
| SHA1: | 56ff336e0ae258f4ac0b221602012f5f |
| User & Date: | drh 2015-08-11 01:45:40 |
Context
|
2015-08-11
| ||
| 10:59 | Add a tcl interface for the experimental logging functionality. check-in: e844304d user: dan tags: experimentalIoLog | |
| 01:45 | Two more places where logging of freelist trunk pages is needed. check-in: 56ff336e user: drh tags: experimentalIoLog | |
|
2015-08-10
| ||
| 20:53 | Record when an allocated page is taken from the freelist trunk. check-in: bb5d7782 user: drh tags: experimentalIoLog | |
Changes
Changes to src/btree.c.
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}else{
rc = btreeGetUnusedPage(pBt, iTrunk, &pTrunk, 0);
}
if( rc ){
pTrunk = 0;
goto end_allocate_page;
}
assert( pTrunk!=0 );
assert( pTrunk->aData!=0 );
/* EVIDENCE-OF: R-13523-04394 The second integer on a freelist trunk page
** is the number of leaf page pointers to follow. */
k = get4byte(&pTrunk->aData[4]);
if( k==0 && !searchList ){
/* The trunk has no leaves and the list is not being searched.
................................................................................
nLeaf = get4byte(&pTrunk->aData[4]);
assert( pBt->usableSize>32 );
if( nLeaf > (u32)pBt->usableSize/4 - 2 ){
rc = SQLITE_CORRUPT_BKPT;
goto freepage_out;
}
if( nLeaf < (u32)pBt->usableSize/4 - 8 ){
/* In this case there is room on the trunk page to insert the page
** being freed as a new leaf.
**
** Note that the trunk page is not really full until it contains
** usableSize/4 - 2 entries, not usableSize/4 - 8 entries as we have
** coded. But due to a coding error in versions of SQLite prior to
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}else{
rc = btreeGetUnusedPage(pBt, iTrunk, &pTrunk, 0);
}
if( rc ){
pTrunk = 0;
goto end_allocate_page;
}
if( pBt->pLog ){
sqlite3ExperimentalLog(pBt->pLog, "freelist-trunk %d", iTrunk);
}
assert( pTrunk!=0 );
assert( pTrunk->aData!=0 );
/* EVIDENCE-OF: R-13523-04394 The second integer on a freelist trunk page
** is the number of leaf page pointers to follow. */
k = get4byte(&pTrunk->aData[4]);
if( k==0 && !searchList ){
/* The trunk has no leaves and the list is not being searched.
................................................................................
nLeaf = get4byte(&pTrunk->aData[4]);
assert( pBt->usableSize>32 );
if( nLeaf > (u32)pBt->usableSize/4 - 2 ){
rc = SQLITE_CORRUPT_BKPT;
goto freepage_out;
}
if( pBt->pLog ){
sqlite3ExperimentalLog(pBt->pLog, "freelist-trunk %d", iTrunk);
}
if( nLeaf < (u32)pBt->usableSize/4 - 8 ){
/* In this case there is room on the trunk page to insert the page
** being freed as a new leaf.
**
** Note that the trunk page is not really full until it contains
** usableSize/4 - 2 entries, not usableSize/4 - 8 entries as we have
** coded. But due to a coding error in versions of SQLite prior to
|