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First cut at a analysis tool for version 3.0 databases. (CVS 1862)

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FossilOrigin-Name: 7c7f698b2eda7b1b34f5ca7fe104145d8bbd8f56
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drh
2004-07-23 00:01:38 +00:00
parent 8ea1a04ff8
commit 3e27c02625
8 changed files with 656 additions and 49 deletions
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40
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 1.179 2004/07/22 02:40:38 drh Exp $
** $Id: btree.c,v 1.180 2004/07/23 00:01:39 drh Exp $
**
** This file implements a external (disk-based) database using BTrees.
** For a detailed discussion of BTrees, refer to
@@ -3901,31 +3901,44 @@ int sqlite3BtreePageDump(Btree *pBt, int pgno, int recursive){
** aResult[0] = The page number
** aResult[1] = The entry number
** aResult[2] = Total number of entries on this page
** aResult[3] = Size of this entry
** aResult[3] = Cell size (local payload + header)
** aResult[4] = Number of free bytes on this page
** aResult[5] = Number of free blocks on the page
** aResult[6] = Page number of the left child of this entry
** aResult[7] = Page number of the right child for the whole page
** aResult[6] = Total payload size (local + overflow)
** aResult[7] = Header size in bytes
** aResult[8] = Local payload size
** aResult[9] = Parent page number
**
** This routine is used for testing and debugging only.
*/
int sqlite3BtreeCursorInfo(BtCursor *pCur, int *aResult){
int sqlite3BtreeCursorInfo(BtCursor *pCur, int *aResult, int upCnt){
int cnt, idx;
MemPage *pPage = pCur->pPage;
BtCursor tmpCur;
pageIntegrity(pPage);
assert( pPage->isInit );
getTempCursor(pCur, &tmpCur);
while( upCnt-- ){
moveToParent(&tmpCur);
}
pPage = tmpCur.pPage;
pageIntegrity(pPage);
aResult[0] = sqlite3pager_pagenumber(pPage->aData);
assert( aResult[0]==pPage->pgno );
aResult[1] = pCur->idx;
aResult[1] = tmpCur.idx;
aResult[2] = pPage->nCell;
if( pCur->idx>=0 && pCur->idx<pPage->nCell ){
u8 *pCell = findCell(pPage, pCur->idx);
aResult[3] = cellSizePtr(pPage, pCell);
aResult[6] = pPage->leaf ? 0 : get4byte(pCell);
if( tmpCur.idx>=0 && tmpCur.idx<pPage->nCell ){
getCellInfo(&tmpCur);
aResult[3] = tmpCur.info.nSize;
aResult[6] = tmpCur.info.nData;
aResult[7] = tmpCur.info.nHeader;
aResult[8] = tmpCur.info.nLocal;
}else{
aResult[3] = 0;
aResult[6] = 0;
aResult[7] = 0;
aResult[8] = 0;
}
aResult[4] = pPage->nFree;
cnt = 0;
@@ -3935,7 +3948,12 @@ int sqlite3BtreeCursorInfo(BtCursor *pCur, int *aResult){
idx = get2byte(&pPage->aData[idx]);
}
aResult[5] = cnt;
aResult[7] = pPage->leaf ? 0 : get4byte(&pPage->aData[pPage->hdrOffset+8]);
if( pPage->pParent==0 || isRootPage(pPage) ){
aResult[9] = 0;
}else{
aResult[9] = pPage->pParent->pgno;
}
releaseTempCursor(&tmpCur);
return SQLITE_OK;
}
#endif