database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-11-18 10:21:03 +03:00
Code Activity

Implement the "lookaside" memory allocation cache. Use of this cache makes

Browse Source 
the speed1.test script run about 15% faster.  Added new interfaces to
control the cache. (CVS 5488)

FossilOrigin-Name: e48f9697e9fea339e150ddc32940760027dd07d9
This commit is contained in:
drh
2008-07-28 19:34:53 +00:00
parent 78bd9ca86f
commit 633e6d57d9
50 changed files with 999 additions and 624 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
src/prepare.c
View File

@@ -13,7 +13,7 @@
** interface, and routines that contribute to loading the database schema
** from disk.
**
** $Id: prepare.c,v 1.89 2008/07/08 19:34:07 drh Exp $
** $Id: prepare.c,v 1.90 2008/07/28 19:34:53 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
@@ -32,7 +32,7 @@ static void corruptSchema(
sqlite3SetString(pData->pzErrMsg, pData->db,
"malformed database schema (%s)", zObj);
if( zExtra && zExtra[0] ){
*pData->pzErrMsg = sqlite3MPrintf(pData->db, "%z - %s",
*pData->pzErrMsg = sqlite3MAppendf(pData->db, *pData->pzErrMsg, "%s - %s",
*pData->pzErrMsg, zExtra);
}
}
@@ -79,11 +79,15 @@ int sqlite3InitCallback(void *pInit, int argc, char **argv, char **azColName){
*/
char *zErr;
int rc;
u8 lookasideEnabled;
assert( db->init.busy );
db->init.iDb = iDb;
db->init.newTnum = atoi(argv[1]);
lookasideEnabled = db->lookaside.bEnabled;
db->lookaside.bEnabled = 0;
rc = sqlite3_exec(db, argv[2], 0, 0, &zErr);
db->init.iDb = 0;
db->lookaside.bEnabled = lookasideEnabled;
assert( rc!=SQLITE_OK || zErr==0 );
if( SQLITE_OK!=rc ){
pData->rc = rc;
@@ -92,7 +96,7 @@ int sqlite3InitCallback(void *pInit, int argc, char **argv, char **azColName){
}else if( rc!=SQLITE_INTERRUPT ){
corruptSchema(pData, argv[0], zErr);
}
sqlite3_free(zErr);
sqlite3DbFree(db, zErr);
return 1;
}
}else if( argv[0]==0 ){
@@ -336,7 +340,7 @@ static int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg){
#endif
if( rc==SQLITE_ABORT ) rc = initData.rc;
(void)sqlite3SafetyOn(db);
sqlite3_free(zSql);
sqlite3DbFree(db, zSql);
#ifndef SQLITE_OMIT_ANALYZE
if( rc==SQLITE_OK ){
sqlite3AnalysisLoad(db, iDb);
@@ -568,7 +572,7 @@ static int sqlite3Prepare(
zSqlCopy = sqlite3DbStrNDup(db, zSql, nBytes);
if( zSqlCopy ){
sqlite3RunParser(&sParse, zSqlCopy, &zErrMsg);
sqlite3_free(zSqlCopy);
sqlite3DbFree(db, zSqlCopy);
sParse.zTail = &zSql[sParse.zTail-zSqlCopy];
}else{
sParse.zTail = &zSql[nBytes];
@@ -632,7 +636,7 @@ static int sqlite3Prepare(
if( zErrMsg ){
sqlite3Error(db, rc, "%s", zErrMsg);
sqlite3_free(zErrMsg);
sqlite3DbFree(db, zErrMsg);
}else{
sqlite3Error(db, rc, 0);
}
@@ -767,7 +771,7 @@ static int sqlite3Prepare16(
int chars_parsed = sqlite3Utf8CharLen(zSql8, zTail8-zSql8);
*pzTail = (u8 *)zSql + sqlite3Utf16ByteLen(zSql, chars_parsed);
}
sqlite3_free(zSql8);
sqlite3DbFree(db, zSql8);
rc = sqlite3ApiExit(db, rc);
sqlite3_mutex_leave(db->mutex);
return rc;