From 9d1ab0794e8045b8e9649b7d990c204726777890 Mon Sep 17 00:00:00 2001
From: drh <drh@noemail.net>
Date: Wed, 21 Aug 2013 22:54:55 +0000
Subject: Minor performance tweaks to the pager.

FossilOrigin-Name: 9ae1f9ce7ea6beaeddc3711080b3796e05acc4f8
---
 src/pager.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

(limited to 'src')

diff --git a/src/pager.c b/src/pager.c
index 77a7d86a0..6ccf2d7ce 100644
--- a/src/pager.c
+++ b/src/pager.c
@@ -1022,13 +1022,17 @@ static char *print_pager_state(Pager *p){
 **     PagerSavepoint.pInSavepoint.
 */
 static int subjRequiresPage(PgHdr *pPg){
-  Pgno pgno = pPg->pgno;
   Pager *pPager = pPg->pPager;
+  PagerSavepoint *p;
+  Pgno pgno;
   int i;
-  for(i=0; i<pPager->nSavepoint; i++){
-    PagerSavepoint *p = &pPager->aSavepoint[i];
-    if( p->nOrig>=pgno && 0==sqlite3BitvecTest(p->pInSavepoint, pgno) ){
-      return 1;
+  if( pPager->nSavepoint ){
+    pgno = pPg->pgno;
+    for(i=0; i<pPager->nSavepoint; i++){
+      p = &pPager->aSavepoint[i];
+      if( p->nOrig>=pgno && 0==sqlite3BitvecTest(p->pInSavepoint, pgno) ){
+        return 1;
+      }
     }
   }
   return 0;
@@ -2874,12 +2878,6 @@ static int readDbPage(PgHdr *pPg, u32 iFrame){
   assert( pPager->eState>=PAGER_READER && !MEMDB );
   assert( isOpen(pPager->fd) );
 
-  if( NEVER(!isOpen(pPager->fd)) ){
-    assert( pPager->tempFile );
-    memset(pPg->pData, 0, pPager->pageSize);
-    return SQLITE_OK;
-  }
-
 #ifndef SQLITE_OMIT_WAL
   if( iFrame ){
     /* Try to pull the page from the write-ahead log. */
-- 
cgit v1.2.3