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Overview
| Comment: | Add assert()s to verify that Table objects in the schema never use lookaside memory. |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
736d6ea677f58e4aa2914fa79a3156b7 |
| User & Date: | drh 2012-05-15 12:49:32.294 |
Context
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2012-05-20
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| 20:23 | Fix a test case so that it works even with very long pathnames. (check-in: ecd4a06359 user: drh tags: trunk) | |
| 20:14 | Check-in included unrelated debugging code by mistake. Was: Fix a test case in the shell1.test script so that it works even for very long pathnames. (Closed-Leaf check-in: 0c0a03987c user: drh tags: mistake) | |
|
2012-05-17
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| 21:04 | Merge updates from trunk. (check-in: 224c65e4a5 user: mistachkin tags: winrt) | |
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2012-05-15
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| 17:15 | When a connection disconnects from a shared-cache database, only delete the in-memory schema if there are no other connections. (check-in: 46f4eb5430 user: dan tags: shared-schema) | |
| 12:49 | Add assert()s to verify that Table objects in the schema never use lookaside memory. (check-in: 736d6ea677 user: drh tags: trunk) | |
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2012-05-14
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| 12:20 | Add an assert() that verifies that the statement pointer from the sqlite3_prepare() family of functions is always NULL if the routines return other than SQLITE_OK. (check-in: 0bb1cfc63f user: drh tags: trunk) | |
Changes
Changes to src/build.c.
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** Remove the memory data structures associated with the given
** Table. No changes are made to disk by this routine.
**
** This routine just deletes the data structure. It does not unlink
** the table data structure from the hash table. But it does destroy
** memory structures of the indices and foreign keys associated with
** the table.
*/
void sqlite3DeleteTable(sqlite3 *db, Table *pTable){
Index *pIndex, *pNext;
assert( !pTable || pTable->nRef>0 );
/* Do not delete the table until the reference count reaches zero. */
if( !pTable ) return;
if( ((!db || db->pnBytesFreed==0) && (--pTable->nRef)>0) ) return;
/* Delete all indices associated with this table. */
for(pIndex = pTable->pIndex; pIndex; pIndex=pNext){
pNext = pIndex->pNext;
assert( pIndex->pSchema==pTable->pSchema );
if( !db || db->pnBytesFreed==0 ){
char *zName = pIndex->zName;
| > > > > > > > > > > > > > | 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 |
** Remove the memory data structures associated with the given
** Table. No changes are made to disk by this routine.
**
** This routine just deletes the data structure. It does not unlink
** the table data structure from the hash table. But it does destroy
** memory structures of the indices and foreign keys associated with
** the table.
**
** The db parameter is optional. It is needed if the Table object
** contains lookaside memory. (Table objects in the schema do not use
** lookaside memory, but some ephemeral Table objects do.) Or the
** db parameter can be used with db->pnBytesFreed to measure the memory
** used by the Table object.
*/
void sqlite3DeleteTable(sqlite3 *db, Table *pTable){
Index *pIndex, *pNext;
TESTONLY( int nLookaside; ) /* Used to verify lookaside not used for schema */
assert( !pTable || pTable->nRef>0 );
/* Do not delete the table until the reference count reaches zero. */
if( !pTable ) return;
if( ((!db || db->pnBytesFreed==0) && (--pTable->nRef)>0) ) return;
/* Record the number of outstanding lookaside allocations in schema Tables
** prior to doing any free() operations. Since schema Tables do not use
** lookaside, this number should not change. */
TESTONLY( nLookaside = (db && (pTable->tabFlags & TF_Ephemeral)==0) ?
db->lookaside.nOut : 0 );
/* Delete all indices associated with this table. */
for(pIndex = pTable->pIndex; pIndex; pIndex=pNext){
pNext = pIndex->pNext;
assert( pIndex->pSchema==pTable->pSchema );
if( !db || db->pnBytesFreed==0 ){
char *zName = pIndex->zName;
|
| ︙ | ︙ | |||
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#ifndef SQLITE_OMIT_CHECK
sqlite3ExprListDelete(db, pTable->pCheck);
#endif
#ifndef SQLITE_OMIT_VIRTUALTABLE
sqlite3VtabClear(db, pTable);
#endif
sqlite3DbFree(db, pTable);
}
/*
** Unlink the given table from the hash tables and the delete the
** table structure with all its indices and foreign keys.
*/
void sqlite3UnlinkAndDeleteTable(sqlite3 *db, int iDb, const char *zTabName){
| > > > | 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 |
#ifndef SQLITE_OMIT_CHECK
sqlite3ExprListDelete(db, pTable->pCheck);
#endif
#ifndef SQLITE_OMIT_VIRTUALTABLE
sqlite3VtabClear(db, pTable);
#endif
sqlite3DbFree(db, pTable);
/* Verify that no lookaside memory was used by schema tables */
assert( nLookaside==0 || nLookaside==db->lookaside.nOut );
}
/*
** Unlink the given table from the hash tables and the delete the
** table structure with all its indices and foreign keys.
*/
void sqlite3UnlinkAndDeleteTable(sqlite3 *db, int iDb, const char *zTabName){
|
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