Overview
| Comment: | Make it safe to call sqliteMalloc() with a request for 0 bytes. Ticket #534. (CVS 1164) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | 6c858db2c099c7ba73d72e02b19bf6173620db13 |
| User & Date: | drh 2004-01-07 03:41:04 |
Context
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2004-01-07
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| 18:52 | Defer the {quote: MoveTo} opcode in VDBE until the data is actually needed. Sometimes the data is never needed, resulting in a performance increase. On an indexed order search with a large OFFSET, queries times can be an order of magnitude faster. (CVS 1165) check-in: d3e96da2 user: drh tags: trunk | |
| 03:41 | Make it safe to call sqliteMalloc() with a request for 0 bytes. Ticket #534. (CVS 1164) check-in: 6c858db2 user: drh tags: trunk | |
| 03:29 | Preserve the HH:MM:SS for most date/time modifiers. Ticket #551. (CVS 1163) check-in: 70df32b7 user: drh tags: trunk | |
Changes
Changes to src/util.c.
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** ************************************************************************* ** Utility functions used throughout sqlite. ** ** This file contains functions for allocating memory, comparing ** strings, and stuff like that. ** ** $Id: util.c,v 1.71 2004/01/07 03:04:27 drh Exp $ */ #include "sqliteInt.h" #include <stdarg.h> #include <ctype.h> /* ** If malloc() ever fails, this global variable gets set to 1. ................................................................................ /* ** Allocate new memory and set it to zero. Return NULL if ** no memory is available. See also sqliteMallocRaw(). */ void *sqliteMalloc(int n){ void *p; if( (p = malloc(n))==0 ){ sqlite_malloc_failed++; }else{ memset(p, 0, n); } return p; } /* ** Allocate new memory but do not set it to zero. Return NULL if ** no memory is available. See also sqliteMalloc(). */ void *sqliteMallocRaw(int n){ void *p; if( (p = malloc(n))==0 ){ sqlite_malloc_failed++; } return p; } /* ** Free memory previously obtained from sqliteMalloc() */ |
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** ************************************************************************* ** Utility functions used throughout sqlite. ** ** This file contains functions for allocating memory, comparing ** strings, and stuff like that. ** ** $Id: util.c,v 1.72 2004/01/07 03:41:04 drh Exp $ */ #include "sqliteInt.h" #include <stdarg.h> #include <ctype.h> /* ** If malloc() ever fails, this global variable gets set to 1. ................................................................................ /* ** Allocate new memory and set it to zero. Return NULL if ** no memory is available. See also sqliteMallocRaw(). */ void *sqliteMalloc(int n){ void *p; if( (p = malloc(n))==0 ){ if( n>0 ) sqlite_malloc_failed++; }else{ memset(p, 0, n); } return p; } /* ** Allocate new memory but do not set it to zero. Return NULL if ** no memory is available. See also sqliteMalloc(). */ void *sqliteMallocRaw(int n){ void *p; if( (p = malloc(n))==0 ){ if( n>0 ) sqlite_malloc_failed++; } return p; } /* ** Free memory previously obtained from sqliteMalloc() */ |