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Overview
| Comment: | Only do the cell overread checks in sqlite3BtreeInitPage if SQLITE_OVERREAD_CHECK is defined at compile-time. (CVS 6733) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
49f544ebae8dc3cf7cf6189536c56ebb |
| User & Date: | drh 2009-06-09 10:37:04 |
Context
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2009-06-09
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| 11:34 | Avoid calling fillInCell() to create an internal node intkey cell from balance_nonroot(). A single putVarint() does the same thing more quickly. (CVS 6734) check-in: 2e5d42ae user: danielk1977 tags: trunk | |
| 10:37 | Only do the cell overread checks in sqlite3BtreeInitPage if SQLITE_OVERREAD_CHECK is defined at compile-time. (CVS 6733) check-in: 49f544eb user: drh tags: trunk | |
| 09:41 | Do not clear the MemPage.nFree variable when insertCell() adds an overflow cell to a page. Not doing this means balance_quick() can avoid a call to sqlite3BtreeInitPage(). (CVS 6732) check-in: 8f1c1f61 user: danielk1977 tags: trunk | |
Changes
Changes to src/btree.c.
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** 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 1.621 2009/06/09 09:41:00 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" ................................................................................ /* A malformed database page might cause use to read past the end ** of page when parsing a cell. ** ** The following block of code checks early to see if a cell extends ** past the end of a page boundary and causes SQLITE_CORRUPT to be ** returned if it does. */ #if defined(SQLITE_OVERREAD_CHECK) || 1 { int iCellFirst; /* First allowable cell index */ int iCellLast; /* Last possible cell index */ int i; /* Index into the cell pointer array */ int sz; /* Size of a cell */ iCellFirst = cellOffset + 2*pPage->nCell; |
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** 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 1.622 2009/06/09 10:37:04 drh 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" ................................................................................ /* A malformed database page might cause use to read past the end ** of page when parsing a cell. ** ** The following block of code checks early to see if a cell extends ** past the end of a page boundary and causes SQLITE_CORRUPT to be ** returned if it does. */ #if defined(SQLITE_OVERREAD_CHECK) { int iCellFirst; /* First allowable cell index */ int iCellLast; /* Last possible cell index */ int i; /* Index into the cell pointer array */ int sz; /* Size of a cell */ iCellFirst = cellOffset + 2*pPage->nCell; |