Move the PENDING_PAGE to a very large value if disk I/O is omitted. (CVS 3135)

FossilOrigin-Name: f07181739f82b0d23f934f51b97e67c32efe6f42

manifest

@@ -1,5 +1,5 @@
-C Make\ssure\ssqlite3FindCollSeq()\sreturns\sNULL\safter\sa\smalloc()\sfailure.\s(CVS\s3134)
-D 2006-03-14T11:08:28
+C Move\sthe\sPENDING_PAGE\sto\sa\svery\slarge\svalue\sif\sdisk\sI/O\sis\somitted.\s(CVS\s3135)
+D 2006-03-14T12:59:10
 F Makefile.in 5d8dff443383918b700e495de42ec65bc1c8865b
 F Makefile.linux-gcc 74ba0eadf88748a9ce3fd03d2a3ede2e6715baec
 F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
@@ -34,7 +34,7 @@ F src/alter.c 451b34fc4eb2475ca76a2e86b21e1030a9428091
 F src/analyze.c 7d2b7ab9a9c2fd6e55700f69064dfdd3e36d7a8a
 F src/attach.c d73a3505de3fb9e373d0a158978116c4212031d0
 F src/auth.c 9ae84d2d94eb96195e04515715e08e85963e96c2
-F src/btree.c 96a383ddf9a391d017bfa36c89dc528ccfc5d9bb
+F src/btree.c caf4b7477b6667dcf4ca4eb9024826cab6877d87
 F src/btree.h 40055cfc09defd1146bc5b922399c035f969e56d
 F src/build.c 4bd8471e4f20f5623c15fd71d2aaee0f66e394d8
 F src/callback.c d8c5ab1cd6f3b7182b2ee63bf53f1b69c0f74306
@@ -355,7 +355,7 @@ F www/tclsqlite.tcl bb0d1357328a42b1993d78573e587c6dcbc964b9
 F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
 F www/version3.tcl 890248cf7b70e60c383b0e84d77d5132b3ead42b
 F www/whentouse.tcl 97e2b5cd296f7d8057e11f44427dea8a4c2db513
-P 5ddc09a5e4d81a73228cd8038c6dc345b1fdf4af
-R a43a2ff24d785747f0cbefa76b43ba7a
+P 0e05355f3ca795f0ab959553e6c9462e5483c3b2
+R 8b2158249132ee17ae57b7db010b8498
 U drh
-Z ab1fe4d8ebe166f5ed63d7ad4e8eac3a
+Z f8486d741b67f811d2affb3cc9c5f176

manifest.uuid

@@ -1 +1 @@
-0e05355f3ca795f0ab959553e6c9462e5483c3b2
+f07181739f82b0d23f934f51b97e67c32efe6f42

src/btree.c

@@ -9,7 +9,7 @@
 **    May you share freely, never taking more than you give.
 **
 *************************************************************************
-** $Id: btree.c,v 1.319 2006/03/13 14:28:05 drh Exp $
+** $Id: btree.c,v 1.320 2006/03/14 12:59:10 drh Exp $
 **
 ** This file implements a external (disk-based) database using BTrees.
 ** For a detailed discussion of BTrees, refer to
@@ -469,8 +469,15 @@ static void put4byte(unsigned char *p, u32 v){
 /* The database page the PENDING_BYTE occupies. This page is never used.
 ** TODO: This macro is very similary to PAGER_MJ_PGNO() in pager.c. They
 ** should possibly be consolidated (presumably in pager.h).
+**
+** If disk I/O is omitted (meaning that the database is stored purely
+** in memory) then there is no pending byte.
 */
-#define PENDING_BYTE_PAGE(pBt) ((PENDING_BYTE/(pBt)->pageSize)+1)
+#ifdef SQLITE_OMIT_DISKIO
+# define PENDING_BYTE_PAGE(pBt)  0x7fffffff
+#else
+# define PENDING_BYTE_PAGE(pBt) ((PENDING_BYTE/(pBt)->pageSize)+1)
+#endif
 
 /*
 ** A linked list of the following structures is stored at BtShared.pLock.