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Overview
Comment:Simplifications to the sqlite3ResetInternalSchema() logic to eliminate unreachable branches.
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SHA1: a4c3ac989d4e93f0279172901b9ece822d137700
User & Date: drh 2011-04-05 19:26:30
Context
2011-04-05
19:27
Simplifications to the sqlite3BtreeEnterAll() and LeaveAll() routines. Just have them call BtreeEnter and BtreeLeave() repeatedly rather than trying to be clever. check-in: 51039b35 user: drh tags: trunk
19:26
Simplifications to the sqlite3ResetInternalSchema() logic to eliminate unreachable branches. check-in: a4c3ac98 user: drh tags: trunk
18:34
Remove dead code from the OP_JournalMode opcode in the VDBE. This code seems to have been useless since [f88c6367d2] on 2010-08-07. check-in: a89f24e2 user: drh tags: trunk
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Changes to src/build.c.

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  int i, j;
  assert( iDb<db->nDb );

  if( iDb>=0 ){
    /* Case 1:  Reset the single schema identified by iDb */
    Db *pDb = &db->aDb[iDb];
    assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
    if( ALWAYS(pDb->pSchema) ){
      sqlite3SchemaClear(pDb->pSchema);
    }
    /* If any database other than TEMP is reset, then also reset TEMP
    ** since TEMP might be holding triggers that reference tables in the
    ** other database.
    */

    if( iDb!=1 && (pDb = &db->aDb[1])!=0 && ALWAYS(pDb->pSchema) ){

      sqlite3SchemaClear(pDb->pSchema);
    }
    return;
  }
  /* Case 2 (from here to the end): Reset all schemas for all attached
  ** databases. */
  assert( iDb<0 );







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  int i, j;
  assert( iDb<db->nDb );

  if( iDb>=0 ){
    /* Case 1:  Reset the single schema identified by iDb */
    Db *pDb = &db->aDb[iDb];
    assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
    assert( pDb->pSchema!=0 );
    sqlite3SchemaClear(pDb->pSchema);

    /* If any database other than TEMP is reset, then also reset TEMP
    ** since TEMP might be holding triggers that reference tables in the
    ** other database.
    */
    if( iDb!=1 ){
      pDb = &db->aDb[1];
      assert( pDb->pSchema!=0 );
      sqlite3SchemaClear(pDb->pSchema);
    }
    return;
  }
  /* Case 2 (from here to the end): Reset all schemas for all attached
  ** databases. */
  assert( iDb<0 );