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Overview
Comment: | Remove a case from BtreeMovetoUnpacked() that is unreachable as of (6881). (CVS 6885) |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
39ce2097da03176e256a2ff35bb857e5 |
User & Date: | danielk1977 2009-07-13 07:30:53.000 |
Context
2009-07-13
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09:41 | Remove an assert ("assert( subpage>0 )") from btree.c that may not be true for a corrupt database. Also add comments and other assert() statements to btree.c function moveToRoot(). (CVS 6886) (check-in: 3151dab9c7 user: danielk1977 tags: trunk) | |
07:30 | Remove a case from BtreeMovetoUnpacked() that is unreachable as of (6881). (CVS 6885) (check-in: 39ce2097da user: danielk1977 tags: trunk) | |
2009-07-12
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02:32 | Simplifications to btree.c to help facilitate coverage testing. (CVS 6884) (check-in: dfb146ef00 user: drh tags: trunk) | |
Changes
Changes to src/btree.c.
1 2 3 4 5 6 7 8 9 10 11 | /* ** 2004 April 6 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* | | | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | /* ** 2004 April 6 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** $Id: btree.c,v 1.683 2009/07/13 07:30:53 danielk1977 Exp $ ** ** This file implements a external (disk-based) database using BTrees. ** See the header comment on "btreeInt.h" for additional information. ** Including a description of file format and an overview of operation. */ #include "btreeInt.h" |
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4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 | int *pRes /* Write search results here */ ){ int rc; assert( cursorHoldsMutex(pCur) ); assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) ); assert( pRes ); /* If the cursor is already positioned at the point we are trying ** to move to, then just return without doing any work */ if( pCur->eState==CURSOR_VALID && pCur->validNKey && pCur->apPage[0]->intKey ){ if( pCur->info.nKey==intKey ){ | > | 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 | int *pRes /* Write search results here */ ){ int rc; assert( cursorHoldsMutex(pCur) ); assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) ); assert( pRes ); assert( (pIdxKey==0)==(pCur->pKeyInfo==0) ); /* If the cursor is already positioned at the point we are trying ** to move to, then just return without doing any work */ if( pCur->eState==CURSOR_VALID && pCur->validNKey && pCur->apPage[0]->intKey ){ if( pCur->info.nKey==intKey ){ |
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4229 4230 4231 4232 4233 4234 4235 | Pgno chldPg; MemPage *pPage = pCur->apPage[pCur->iPage]; int c; /* pPage->nCell must be greater than zero. If this is the root-page ** the cursor would have been INVALID above and this for(;;) loop ** not run. If this is not the root-page, then the moveToChild() routine | | > > > < < < < | 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 | Pgno chldPg; MemPage *pPage = pCur->apPage[pCur->iPage]; int c; /* pPage->nCell must be greater than zero. If this is the root-page ** the cursor would have been INVALID above and this for(;;) loop ** not run. If this is not the root-page, then the moveToChild() routine ** would have already detected db corruption. Similarly, pPage must ** be the right kind (index or table) of b-tree page. Otherwise ** a moveToChild() or moveToRoot() call would have detected corruption. */ assert( pPage->nCell>0 ); assert( pPage->intKey==(pIdxKey==0) ); lwr = 0; upr = pPage->nCell-1; if( biasRight ){ pCur->aiIdx[pCur->iPage] = (u16)upr; }else{ pCur->aiIdx[pCur->iPage] = (u16)((upr+lwr)/2); } for(;;){ int idx = pCur->aiIdx[pCur->iPage]; /* Index of current cell in pPage */ |
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