diff -r 5f8e5adbbed9 -r 29cda98b007e engine/sqlite/src/pager.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/engine/sqlite/src/pager.h	Thu Feb 25 14:29:19 2010 +0000
@@ -0,0 +1,126 @@
+/*
+** 2001 September 15
+**
+** The author disclaims copyright to this source code.  In place of
+** a legal notice, here is a blessing:
+**
+**    May you do good and not evil.
+**    May you find forgiveness for yourself and forgive others.
+**    May you share freely, never taking more than you give.
+**
+*************************************************************************
+** This header file defines the interface that the sqlite page cache
+** subsystem.  The page cache subsystem reads and writes a file a page
+** at a time and provides a journal for rollback.
+**
+** @(#) $Id: pager.h 1282 2008-11-13 09:31:33Z LarsPson $
+*/
+
+#ifndef _PAGER_H_
+#define _PAGER_H_
+
+/*
+** The type used to represent a page number.  The first page in a file
+** is called page 1.  0 is used to represent "not a page".
+*/
+typedef unsigned int Pgno;
+
+/*
+** Each open file is managed by a separate instance of the "Pager" structure.
+*/
+typedef struct Pager Pager;
+
+/*
+** Handle type for pages.
+*/
+typedef struct PgHdr DbPage;
+
+/*
+** Allowed values for the flags parameter to sqlite3PagerOpen().
+**
+** NOTE: This values must match the corresponding BTREE_ values in btree.h.
+*/
+#define PAGER_OMIT_JOURNAL  0x0001    /* Do not use a rollback journal */
+#define PAGER_NO_READLOCK   0x0002    /* Omit readlocks on readonly files */
+
+/*
+** Valid values for the second argument to sqlite3PagerLockingMode().
+*/
+#define PAGER_LOCKINGMODE_QUERY      -1
+#define PAGER_LOCKINGMODE_NORMAL      0
+#define PAGER_LOCKINGMODE_EXCLUSIVE   1
+
+/*
+** See source code comments for a detailed description of the following
+** routines:
+*/
+int sqlite3PagerOpen(sqlite3_vfs *, Pager **ppPager, const char*, int,int,int);
+void sqlite3PagerSetBusyhandler(Pager*, BusyHandler *pBusyHandler);
+void sqlite3PagerSetDestructor(Pager*, void(*)(DbPage*,int));
+void sqlite3PagerSetReiniter(Pager*, void(*)(DbPage*,int));
+int sqlite3PagerSetPagesize(Pager*, u16*);
+int sqlite3PagerMaxPageCount(Pager*, int);
+int sqlite3PagerReadFileheader(Pager*, int, unsigned char*);
+void sqlite3PagerSetCachesize(Pager*, int);
+int sqlite3PagerClose(Pager *pPager);
+int sqlite3PagerAcquire(Pager *pPager, Pgno pgno, DbPage **ppPage, int clrFlag);
+#define sqlite3PagerGet(A,B,C) sqlite3PagerAcquire(A,B,C,0)
+DbPage *sqlite3PagerLookup(Pager *pPager, Pgno pgno);
+int sqlite3PagerRef(DbPage*);
+int sqlite3PagerUnref(DbPage*);
+int sqlite3PagerWrite(DbPage*);
+int sqlite3PagerOverwrite(Pager *pPager, Pgno pgno, void*);
+int sqlite3PagerPagecount(Pager*);
+int sqlite3PagerTruncate(Pager*,Pgno);
+int sqlite3PagerBegin(DbPage*, int exFlag);
+int sqlite3PagerCommitPhaseOne(Pager*,const char *zMaster, Pgno);
+int sqlite3PagerCommitPhaseTwo(Pager*);
+int sqlite3PagerRollback(Pager*);
+int sqlite3PagerIsreadonly(Pager*);
+int sqlite3PagerStmtBegin(Pager*);
+int sqlite3PagerStmtCommit(Pager*);
+int sqlite3PagerStmtRollback(Pager*);
+void sqlite3PagerDontRollback(DbPage*);
+void sqlite3PagerDontWrite(DbPage*);
+int sqlite3PagerRefcount(Pager*);
+void sqlite3PagerSetSafetyLevel(Pager*,int,int);
+const char *sqlite3PagerFilename(Pager*);
+const sqlite3_vfs *sqlite3PagerVfs(Pager*);
+sqlite3_file *sqlite3PagerFile(Pager*);
+const char *sqlite3PagerDirname(Pager*);
+const char *sqlite3PagerJournalname(Pager*);
+int sqlite3PagerNosync(Pager*);
+int sqlite3PagerMovepage(Pager*,DbPage*,Pgno);
+void *sqlite3PagerGetData(DbPage *); 
+void *sqlite3PagerGetExtra(DbPage *); 
+int sqlite3PagerLockingMode(Pager *, int);
+void *sqlite3PagerTempSpace(Pager*);
+
+#if defined(SQLITE_ENABLE_MEMORY_MANAGEMENT) && !defined(SQLITE_OMIT_DISKIO)
+  int sqlite3PagerReleaseMemory(int);
+#endif
+
+#ifdef SQLITE_HAS_CODEC
+  void sqlite3PagerSetCodec(Pager*,void*(*)(void*,void*,Pgno,int),void*);
+#endif
+
+#if !defined(NDEBUG) || defined(SQLITE_TEST)
+  Pgno sqlite3PagerPagenumber(DbPage*);
+  int sqlite3PagerIswriteable(DbPage*);
+#endif
+
+#ifdef SQLITE_TEST
+  int *sqlite3PagerStats(Pager*);
+  void sqlite3PagerRefdump(Pager*);
+  int pager3_refinfo_enable;
+#endif
+
+#ifdef SQLITE_TEST
+void disable_simulated_io_errors(void);
+void enable_simulated_io_errors(void);
+#else
+# define disable_simulated_io_errors()
+# define enable_simulated_io_errors()
+#endif
+
+#endif /* _PAGER_H_ */