Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
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.
5543
5544
5545
5546
5547
5548
5549
5550
5551
5552
5553
5554
5555
5556
....
5848
5849
5850
5851
5852
5853
5854
5855
5856
5857
5858
5859
5860
5861
|
}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
|
>
>
>
>
>
>
|
5543
5544
5545
5546
5547
5548
5549
5550
5551
5552
5553
5554
5555
5556
5557
5558
5559
....
5851
5852
5853
5854
5855
5856
5857
5858
5859
5860
5861
5862
5863
5864
5865
5866
5867
|
}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
|