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Overview
| Comment: | Fix a long-standing memory leak in the hash table. The leak only appears following a malloc failure of a hash that copies its keys, which rarely happens and so we have not previously noticed it. (CVS 3777) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
2aae1964572f4d4d1eae090a997e0bd9 |
| User & Date: | drh 2007-03-31 03:59:24 |
Context
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2007-03-31
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| 10:00 | More coverage for pager.c. (CVS 3778) check-in: 665b119a user: danielk1977 tags: trunk | |
| 03:59 | Fix a long-standing memory leak in the hash table. The leak only appears following a malloc failure of a hash that copies its keys, which rarely happens and so we have not previously noticed it. (CVS 3777) check-in: 2aae1964 user: drh tags: trunk | |
| 02:36 | Fix a large memory leak in the btree layer that occurs following an I/O error when in shared cache mode. (CVS 3776) check-in: dce4cb84 user: drh tags: trunk | |
Changes
Changes to src/hash.c.
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** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This is the implementation of generic hash-tables ** used in SQLite. ** ** $Id: hash.c,v 1.18 2006/02/14 10:48:39 danielk1977 Exp $ */ #include "sqliteInt.h" #include <assert.h> /* Turn bulk memory into a hash table object by initializing the ** fields of the Hash structure. ** ................................................................................ if( pEntry->chain==elem ){ pEntry->chain = elem->next; } pEntry->count--; if( pEntry->count<=0 ){ pEntry->chain = 0; } if( pH->copyKey && elem->pKey ){ pH->xFree(elem->pKey); } pH->xFree( elem ); pH->count--; if( pH->count<=0 ){ assert( pH->first==0 ); assert( pH->count==0 ); ................................................................................ } new_elem->nKey = nKey; pH->count++; if( pH->htsize==0 ){ rehash(pH,8); if( pH->htsize==0 ){ pH->count = 0; pH->xFree(new_elem); return data; } } if( pH->count > pH->htsize ){ rehash(pH,pH->htsize*2); } |
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** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This is the implementation of generic hash-tables ** used in SQLite. ** ** $Id: hash.c,v 1.19 2007/03/31 03:59:24 drh Exp $ */ #include "sqliteInt.h" #include <assert.h> /* Turn bulk memory into a hash table object by initializing the ** fields of the Hash structure. ** ................................................................................ if( pEntry->chain==elem ){ pEntry->chain = elem->next; } pEntry->count--; if( pEntry->count<=0 ){ pEntry->chain = 0; } if( pH->copyKey ){ pH->xFree(elem->pKey); } pH->xFree( elem ); pH->count--; if( pH->count<=0 ){ assert( pH->first==0 ); assert( pH->count==0 ); ................................................................................ } new_elem->nKey = nKey; pH->count++; if( pH->htsize==0 ){ rehash(pH,8); if( pH->htsize==0 ){ pH->count = 0; if( pH->copyKey ){ pH->xFree(new_elem->pKey); } pH->xFree(new_elem); return data; } } if( pH->count > pH->htsize ){ rehash(pH,pH->htsize*2); } |