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

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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
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19
src/alter.c
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@@ -12,7 +12,7 @@
** This file contains C code routines that used to generate VDBE code
** that implements the ALTER TABLE command.
**
** $Id: alter.c,v 1.46 2008/07/15 14:47:19 drh Exp $
** $Id: alter.c,v 1.47 2008/07/28 19:34:53 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
@@ -80,7 +80,7 @@ static void renameTableFunc(
zRet = sqlite3MPrintf(db, "%.*s\"%w\"%s", tname.z - zSql, zSql,
zTableName, tname.z+tname.n);
sqlite3_result_text(context, zRet, -1, sqlite3_free);
sqlite3_result_text(context, zRet, -1, SQLITE_DYNAMIC);
}
}
@@ -155,7 +155,7 @@ static void renameTriggerFunc(
*/
zRet = sqlite3MPrintf(db, "%.*s\"%w\"%s", tname.z - zSql, zSql,
zTableName, tname.z+tname.n);
sqlite3_result_text(context, zRet, -1, sqlite3_free);
sqlite3_result_text(context, zRet, -1, SQLITE_DYNAMIC);
}
}
#endif /* !SQLITE_OMIT_TRIGGER */
@@ -198,7 +198,7 @@ static char *whereTempTriggers(Parse *pParse, Table *pTab){
}else{
tmp = zWhere;
zWhere = sqlite3MPrintf(db, "%s OR name=%Q", zWhere, pTrig->name);
sqlite3_free(tmp);
sqlite3DbFree(db, tmp);
}
}
}
@@ -409,7 +409,7 @@ void sqlite3AlterRenameTable(
"sql = sqlite_rename_trigger(sql, %Q), "
"tbl_name = %Q "
"WHERE %s;", zName, zName, zWhere);
sqlite3_free(zWhere);
sqlite3DbFree(db, zWhere);
}
#endif
@@ -417,8 +417,8 @@ void sqlite3AlterRenameTable(
reloadTableSchema(pParse, pTab, zName);
exit_rename_table:
sqlite3SrcListDelete(pSrc);
sqlite3_free(zName);
sqlite3SrcListDelete(db, pSrc);
sqlite3DbFree(db, zName);
}
@@ -518,7 +518,7 @@ void sqlite3AlterFinishAddColumn(Parse *pParse, Token *pColDef){
zDb, SCHEMA_TABLE(iDb), pNew->addColOffset, zCol, pNew->addColOffset+1,
zTab
);
sqlite3_free(zCol);
sqlite3DbFree(db, zCol);
}
/* If the default value of the new column is NULL, then set the file
@@ -585,6 +585,7 @@ void sqlite3AlterBeginAddColumn(Parse *pParse, SrcList *pSrc){
if( !pNew ) goto exit_begin_add_column;
pParse->pNewTable = pNew;
pNew->nRef = 1;
pNew->db = db;
pNew->nCol = pTab->nCol;
assert( pNew->nCol>0 );
nAlloc = (((pNew->nCol-1)/8)*8)+8;
@@ -614,7 +615,7 @@ void sqlite3AlterBeginAddColumn(Parse *pParse, SrcList *pSrc){
sqlite3ChangeCookie(pParse, iDb);
exit_begin_add_column:
sqlite3SrcListDelete(pSrc);
sqlite3SrcListDelete(db, pSrc);
return;
}
#endif /* SQLITE_ALTER_TABLE */