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| Comment: | Clarify the meaning of a comment. No changes to code. (CVS 6375) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
7c2df04b52a40d5d1b744ad1097f7c12 |
| User & Date: | drh 2009-03-23 21:37:04 |
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2009-03-24
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| 04:46 | Add a comment to prepare.c explaining why the lookaside buffer is disabled before sqlite3_exec() is called to parse a schema statement. No code changes. (CVS 6376) (check-in: 8ca6a665 user: danielk1977 tags: trunk) | |
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2009-03-23
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| 21:37 | Clarify the meaning of a comment. No changes to code. (CVS 6375) (check-in: 7c2df04b user: drh tags: trunk) | |
| 17:49 | Add asserts to make sure that database connection locks are held when accessing the lookaside memory allocation buffers. No defects were found. (CVS 6374) (check-in: 8a9f3e66 user: drh tags: trunk) | |
Changes to src/vdbemem.c.
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************************************************************************* ** ** This file contains code use to manipulate "Mem" structure. A "Mem" ** stores a single value in the VDBE. Mem is an opaque structure visible ** only within the VDBE. Interface routines refer to a Mem using the ** name sqlite_value ** ** $Id: vdbemem.c,v 1.137 2009/02/04 03:59:25 shane Exp $ */ #include "sqliteInt.h" #include "vdbeInt.h" /* ** Call sqlite3VdbeMemExpandBlob() on the supplied value (type Mem*) ** P if required. ................................................................................ /* ** Return some kind of integer value which is the best we can do ** at representing the value that *pMem describes as an integer. ** If pMem is an integer, then the value is exact. If pMem is ** a floating-point then the value returned is the integer part. ** If pMem is a string or blob, then we make an attempt to convert ** it into a integer and return that. If pMem is NULL, return 0. ** ** If pMem is a string, its encoding might be changed. */ i64 sqlite3VdbeIntValue(Mem *pMem){ int flags; assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); flags = pMem->flags; if( flags & MEM_Int ){ return pMem->u.i; |
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************************************************************************* ** ** This file contains code use to manipulate "Mem" structure. A "Mem" ** stores a single value in the VDBE. Mem is an opaque structure visible ** only within the VDBE. Interface routines refer to a Mem using the ** name sqlite_value ** ** $Id: vdbemem.c,v 1.138 2009/03/23 21:37:04 drh Exp $ */ #include "sqliteInt.h" #include "vdbeInt.h" /* ** Call sqlite3VdbeMemExpandBlob() on the supplied value (type Mem*) ** P if required. ................................................................................ /* ** Return some kind of integer value which is the best we can do ** at representing the value that *pMem describes as an integer. ** If pMem is an integer, then the value is exact. If pMem is ** a floating-point then the value returned is the integer part. ** If pMem is a string or blob, then we make an attempt to convert ** it into a integer and return that. If pMem represents an ** an SQL-NULL value, return 0. ** ** If pMem represents a string value, its encoding might be changed. */ i64 sqlite3VdbeIntValue(Mem *pMem){ int flags; assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); flags = pMem->flags; if( flags & MEM_Int ){ return pMem->u.i; |