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Add support for DEFERRED, IMMEDIATE, and EXCLUSIVE transactions. (CVS 2000)

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FossilOrigin-Name: 81ff8107ad63113782cf5a9ba7a512496114ba08
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drh
2004-10-05 02:41:42 +00:00
parent 9a43267ba2
commit 684917c269
18 changed files with 249 additions and 119 deletions
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12
src/btree.c
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@@ -9,7 +9,7 @@
** May you share freely, never taking more than you give.
**
*************************************************************************
** $Id: btree.c,v 1.191 2004/09/27 13:19:52 drh Exp $
** $Id: btree.c,v 1.192 2004/10/05 02:41:42 drh Exp $
**
** This file implements a external (disk-based) database using BTrees.
** For a detailed discussion of BTrees, refer to
@@ -1289,8 +1289,12 @@ static int newDatabase(Btree *pBt){
/*
** Attempt to start a new transaction. A write-transaction
** is started if the second argument is true, otherwise a read-
** transaction.
** is started if the second argument is nonzero, otherwise a read-
** transaction. If the second argument is 2 or more and exclusive
** transaction is started, meaning that no other process is allowed
** to access the database. A preexisting transaction may not be
** upgrade to exclusive by calling this routine a second time - the
** exclusivity flag only works for a new transaction.
**
** A write-transaction must be started before attempting any
** changes to the database. None of the following routines
@@ -1329,7 +1333,7 @@ int sqlite3BtreeBeginTrans(Btree *pBt, int wrflag){
}
if( rc==SQLITE_OK && wrflag ){
rc = sqlite3pager_begin(pBt->pPage1->aData);
rc = sqlite3pager_begin(pBt->pPage1->aData, wrflag>1);
if( rc==SQLITE_OK ){
rc = newDatabase(pBt);
}