When in PAGER_RESERVED state, don't write to the main file when rolling

back a statement transaction. (CVS 1560)

FossilOrigin-Name: adb2bd61436927d37b23bae857089d62e12397af

manifest

@@ -1,5 +1,5 @@
-C Change\sthe\scollation\ssequence\sinterface\sto\sallow\scollation\ssequences\sthat\nuse\sUTF-16\sin\snon-native\sbyte\sorder\sto\sbe\sregistered.\s(CVS\s1559)
+C When\sin\sPAGER_RESERVED\sstate,\sdon't\swrite\sto\sthe\smain\sfile\swhen\srolling\nback\sa\sstatement\stransaction.\s(CVS\s1560)
-D 2004-06-10T02:16:02
+D 2004-06-10T04:32:17
 F Makefile.in ab7b0d5118e2da97bac66be8684a1034e3500f5a
 F Makefile.linux-gcc a9e5a0d309fa7c38e7c14d3ecf7690879d3a5457
 F README f1de682fbbd94899d50aca13d387d1b3fd3be2dd
@@ -47,7 +47,7 @@ F src/os_unix.c 1d6f3d1a87d4aa0e4490bcc47b3f0ff9b2e37e7a
 F src/os_unix.h 1cd6133cf66dea704b8646b70b2dfdcbdd9b3738
 F src/os_win.c 6b8f9fcc683bb888e07fc485372803baa68faadb
 F src/os_win.h 004eec47b1780fcaf07420ddc2072294b698d48c
-F src/pager.c 88a7160c749435c03a4154996cd851196c0a87c2
+F src/pager.c 778379c031daa20d134a934d5753c19b606c10db
 F src/pager.h ca8f293e1d623a7c628a1c5e0c6cf43d5bbb80bf
 F src/parse.y 097438674976355a10cf177bd97326c548820b86
 F src/pragma.c 6ab13748a415bf8e8f2dd79e5f713fbe72dfd3f4
@@ -74,7 +74,7 @@ F src/vdbe.c 90e0e6bdbdf9b77c66f2500374b5784d30c323fa
 F src/vdbe.h 46f74444a213129bc4b5ce40124dd8ed613b0cde
 F src/vdbeInt.h d41605853332bdbd600d7ecd60e1f54bbaea174e
 F src/vdbeapi.c 4ac95766b0515538037a7aec172ed26142f97cf9
-F src/vdbeaux.c 6f5b26a6b4d9c9f0f99a9f75dce9460e5a90542e
+F src/vdbeaux.c 73764dadcdbf79aa2d948f863eae07b18589e663
 F src/vdbemem.c 5b2fab8b5a830e5204413b808c4a2d8335189f21
 F src/where.c 32578882a245f8ac3303c5cea4664cd51fc73891
 F test/all.test 569a92a8ee88f5300c057cc4a8f50fbbc69a3242
@@ -158,7 +158,7 @@ F test/threadtest2.c d94ca4114fd1504f7e0ae724bcd83d4b40931d86
 F test/trans.test 4a26c6fa3639202c334521954c17d8abe8a1c8e8
 F test/trigger1.test 99b7cd9a568ac60aa04bbc3b9db9575ffa97709a
 F test/trigger2.test 0767ab30cb5a2c8402c8524f3d566b410b6f5263
-F test/trigger3.test 895301736db4f0f111815f43502d9bdb150cc722
+F test/trigger3.test 70931be83fa3f563f7a5ca9e88b86f476af73948
 F test/trigger4.test 542afce45774e8f8e1130b96b8675f414d6e4bd8
 F test/types.test 6c49e574970866558365a025b44c9fd8a162ef0d
 F test/types2.test 5d725fcb68dbd032c6d4950d568d75fa33872687
@@ -218,7 +218,7 @@ F www/support.tcl 1801397edd271cc39a2aadd54e701184b5181248
 F www/tclsqlite.tcl 19191cf2a1010eaeff74c51d83fd5f5a4d899075
 F www/vdbe.tcl 59288db1ac5c0616296b26dce071c36cb611dfe9
 F www/whentouse.tcl a8335bce47cc2fddb07f19052cb0cb4d9129a8e4
-P 28c3cc088018833f507535b8d227232776cff204
+P b8aaa3a29e0ddef357ab1b3b0b9f87ed390f2f36
-R f9fbe975e7140b57b35e8b9f5b97fbe5
+R ad810f31dbb79cebb57b3882d1073a25
 U danielk1977
-Z 419742ffbc029c96384373534fdaa6dc
+Z 5213c6eb04cd03f6a07cc2df587564de

manifest.uuid

@@ -1 +1 @@
-b8aaa3a29e0ddef357ab1b3b0b9f87ed390f2f36
+adb2bd61436927d37b23bae857089d62e12397af

src/pager.c

@@ -18,7 +18,7 @@
 ** file simultaneously, or one process from reading the database while
 ** another is writing.
 **
-** @(#) $Id: pager.c,v 1.120 2004/06/10 02:16:02 danielk1977 Exp $
+** @(#) $Id: pager.c,v 1.121 2004/06/10 04:32:17 danielk1977 Exp $
 */
 #include "os.h"         /* Must be first to enable large file support */
 #include "sqliteInt.h"
@@ -517,13 +517,22 @@ static int pager_playback_one_page(Pager *pPager, OsFile *jfd, int useCksum){
     }
   }
 
-  /* Playback the page.  Update the in-memory copy of the page
+  assert( pPager->state==PAGER_RESERVED || pPager->state==PAGER_EXCLUSIVE );
-  ** at the same time, if there is one.
+
+  /* If the pager is in RESERVED state, then there must be a copy of this
+  ** page in the pager cache. In this case just update the pager cache,
+  ** not the database file.
+  **
+  ** If in EXCLUSIVE state, then we update the pager cache if it exists
+  ** and the main file. The page is then marked not dirty.
   */
   pPg = pager_lookup(pPager, pgno);
+  assert( pPager->state==PAGER_EXCLUSIVE || pPg );
   TRACE2("PLAYBACK page %d\n", pgno);
-  sqlite3OsSeek(&pPager->fd, (pgno-1)*(off_t)SQLITE_PAGE_SIZE);
+  if( pPager->state==PAGER_EXCLUSIVE ){
-  rc = sqlite3OsWrite(&pPager->fd, aData, SQLITE_PAGE_SIZE);
+    sqlite3OsSeek(&pPager->fd, (pgno-1)*(off_t)SQLITE_PAGE_SIZE);
+    rc = sqlite3OsWrite(&pPager->fd, aData, SQLITE_PAGE_SIZE);
+  }
   if( pPg ){
     /* No page should ever be rolled back that is in use, except for page
     ** 1 which is held in use in order to keep the lock on the database

src/vdbeaux.c

@@ -1162,6 +1162,7 @@ int sqlite3VdbeReset(Vdbe *p, char **pzErrMsg){
       db->autoCommit = 1;
     }
   }
+  p->autoCommitOn = 0;
 
   /* If xFunc is not NULL, then it is one of sqlite3BtreeRollback,
   ** sqlite3BtreeRollbackStmt or sqlite3BtreeCommitStmt. Call it once on

test/trigger3.test

@@ -13,12 +13,6 @@
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
-set sqlite_os_trace 1
-execsql {
- PRAGMA vdbe_listing=on;
- PRAGMA sql_trace=on;
- PRAGMA vdbe_trace=on;
-}
 
 # Test that we can cause ROLLBACK, FAIL and ABORT correctly
 # catchsql { DROP TABLE tbl; }
@@ -52,7 +46,6 @@ do_test trigger3-1.2 {
 do_test trigger3-1.3 {
     execsql {SELECT * FROM tbl}
 } {}
-exit
 
 # FAIL
 do_test trigger3-2.1 {