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Overview
| Comment: | Avoid reloading the db schema after a failed OP_VerifyCookie if the in-memory schema cookie already matches the database file. (CVS 3849) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | 61c1d06d10257575e1406303af331bcc4d00deb0 |
| User & Date: | danielk1977 2007-04-17 08:32:34 |
Context
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2007-04-18
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| 13:49 | Bump the version number and update documents in preparation for 3.3.16. (CVS 3850) check-in: 852100a3 user: drh tags: trunk | |
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2007-04-17
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| 08:32 | Avoid reloading the db schema after a failed OP_VerifyCookie if the in-memory schema cookie already matches the database file. (CVS 3849) check-in: 61c1d06d user: danielk1977 tags: trunk | |
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2007-04-16
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| 17:07 | Fix a memory leak introduced by (3842) associated with ticket #2296. (CVS 3848) check-in: cdc7608b user: drh tags: trunk | |
Changes
Changes to src/vdbe.c.
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** ** Various scripts scan this source file in order to generate HTML ** documentation, headers files, or other derived files. The formatting ** of the code in this file is, therefore, important. See other comments ** in this file for details. If in doubt, do not deviate from existing ** commenting and indentation practices when changing or adding code. ** ** $Id: vdbe.c,v 1.599 2007/04/16 15:06:25 danielk1977 Exp $ */ #include "sqliteInt.h" #include "os.h" #include <ctype.h> #include "vdbeInt.h" /* ................................................................................ rc = sqlite3BtreeGetMeta(pBt, 1, (u32 *)&iMeta); }else{ rc = SQLITE_OK; iMeta = 0; } if( rc==SQLITE_OK && iMeta!=pOp->p2 ){ sqlite3SetString(&p->zErrMsg, "database schema has changed", (char*)0); sqlite3ResetInternalSchema(db, pOp->p1); sqlite3ExpirePreparedStatements(db); rc = SQLITE_SCHEMA; } break; } /* Opcode: OpenRead P1 P2 P3 |
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** ** Various scripts scan this source file in order to generate HTML ** documentation, headers files, or other derived files. The formatting ** of the code in this file is, therefore, important. See other comments ** in this file for details. If in doubt, do not deviate from existing ** commenting and indentation practices when changing or adding code. ** ** $Id: vdbe.c,v 1.600 2007/04/17 08:32:34 danielk1977 Exp $ */ #include "sqliteInt.h" #include "os.h" #include <ctype.h> #include "vdbeInt.h" /* ................................................................................ rc = sqlite3BtreeGetMeta(pBt, 1, (u32 *)&iMeta); }else{ rc = SQLITE_OK; iMeta = 0; } if( rc==SQLITE_OK && iMeta!=pOp->p2 ){ sqlite3SetString(&p->zErrMsg, "database schema has changed", (char*)0); /* If the schema-cookie from the database file matches the cookie ** stored with the in-memory representation of the schema, do ** not reload the schema from the database file. ** ** If virtual-tables are in use, this is not just an optimisation. ** Often, v-tables store their data in other SQLite tables, which ** are queried from within xNext() and other v-table methods using ** prepared queries. If such a query is out-of-date, we do not want to ** discard the database schema, as the user code implementing the ** v-table would have to be ready for the sqlite3_vtab structure itself ** to be invalidated whenever sqlite3_step() is called from within ** a v-table method. */ if( db->aDb[pOp->p1].pSchema->schema_cookie!=iMeta ){ sqlite3ResetInternalSchema(db, pOp->p1); } sqlite3ExpirePreparedStatements(db); rc = SQLITE_SCHEMA; } break; } /* Opcode: OpenRead P1 P2 P3 |