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Simplifications and comment enhancements on btree.c. (CVS 6925)

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FossilOrigin-Name: 5ba880dde8a219543ced6f792c7f9ecdcd8c1cbb
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drh
2009-07-23 01:43:59 +00:00
parent 440637eb46
commit e39f2f9326
3 changed files with 16 additions and 12 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 1.700 2009/07/22 18:07:41 drh Exp $
** $Id: btree.c,v 1.701 2009/07/23 01:44:00 drh Exp $
**
** This file implements a external (disk-based) database using BTrees.
** See the header comment on "btreeInt.h" for additional information.
@@ -2315,8 +2315,9 @@ static void unlockBtreeIfUnused(BtShared *pBt){
}
/*
** Create a new database by initializing the first page of the
** file.
** If pBt points to an empty file then convert that empty file
** into a new empty database by initializing the first page of
** the database.
*/
static int newDatabase(BtShared *pBt){
MemPage *pP1;
@@ -2325,8 +2326,11 @@ static int newDatabase(BtShared *pBt){
int nPage;
assert( sqlite3_mutex_held(pBt->mutex) );
/* The database size has already been measured and cached, so failure
** is impossible here. If the original size measurement failed, then
** processing aborts before entering this routine. */
rc = sqlite3PagerPagecount(pBt->pPager, &nPage);
if( rc!=SQLITE_OK || nPage>0 ){
if( NEVER(rc!=SQLITE_OK) || nPage>0 ){
return rc;
}
pP1 = pBt->pPage1;