216 lines
No EOL
7.9 KiB
C#
216 lines
No EOL
7.9 KiB
C#
using Pgno = System.UInt32;
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namespace Community.CsharpSqlite
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{
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public partial class Sqlite3
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{
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/*
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** 2001 September 15
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**
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** The author disclaims copyright to this source code. In place of
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** a legal notice, here is a blessing:
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**
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** May you do good and not evil.
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** May you find forgiveness for yourself and forgive others.
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** May you share freely, never taking more than you give.
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**
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*************************************************************************
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** This header file defines the interface that the sqlite page cache
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** subsystem. The page cache subsystem reads and writes a file a page
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** at a time and provides a journal for rollback.
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*************************************************************************
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** Included in SQLite3 port to C#-SQLite; 2008 Noah B Hart
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** C#-SQLite is an independent reimplementation of the SQLite software library
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**
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** SQLITE_SOURCE_ID: 2011-05-19 13:26:54 ed1da510a239ea767a01dc332b667119fa3c908e
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**
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*************************************************************************
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*/
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//#if !_PAGER_H_
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//#define _PAGER_H_
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/*
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** Default maximum size for persistent journal files. A negative
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** value means no limit. This value may be overridden using the
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** sqlite3PagerJournalSizeLimit() API. See also "PRAGMA journal_size_limit".
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*/
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#if !SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT
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private const int SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT = -1;//#define SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT -1
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#endif
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/*
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** The type used to represent a page number. The first page in a file
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** is called page 1. 0 is used to represent "not a page".
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*/
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//typedef u32 Pgno;
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/*
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** Each open file is managed by a separate instance of the "Pager" structure.
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*/
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//typedef struct Pager Pager;
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/*
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** Handle type for pages.
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*/
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//typedef struct PgHdr DbPage;
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/*
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** Page number PAGER_MJ_PGNO is never used in an SQLite database (it is
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** reserved for working around a windows/posix incompatibility). It is
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** used in the journal to signify that the remainder of the journal file
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** is devoted to storing a master journal name - there are no more pages to
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** roll back. See comments for function writeMasterJournal() in pager.c
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** for details.
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*/
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//#define PAGER_MJ_PGNO(x) ((Pgno)((PENDING_BYTE/((x)->pageSize))+1))
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private static Pgno PAGER_MJ_PGNO(Pager x)
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{
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return ((Pgno)((PENDING_BYTE / ((x).pageSize)) + 1));
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}
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/*
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** Allowed values for the flags parameter to sqlite3PagerOpen().
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**
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** NOTE: These values must match the corresponding BTREE_ values in btree.h.
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*/
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//#define PAGER_OMIT_JOURNAL 0x0001 /* Do not use a rollback journal */
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//#define PAGER_NO_READLOCK 0x0002 /* Omit readlocks on readonly files */
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//#define PAGER_MEMORY 0x0004 /* In-memory database */
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private const int PAGER_OMIT_JOURNAL = 0x0001;
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private const int PAGER_NO_READLOCK = 0x0002;
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private const int PAGER_MEMORY = 0x0004;
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/*
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** Valid values for the second argument to sqlite3PagerLockingMode().
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*/
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//#define PAGER_LOCKINGMODE_QUERY -1
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//#define PAGER_LOCKINGMODE_NORMAL 0
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//#define PAGER_LOCKINGMODE_EXCLUSIVE 1
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private static int PAGER_LOCKINGMODE_QUERY = -1;
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private static int PAGER_LOCKINGMODE_NORMAL = 0;
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private static int PAGER_LOCKINGMODE_EXCLUSIVE = 1;
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/*
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** Numeric constants that encode the journalmode.
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*/
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//#define PAGER_JOURNALMODE_QUERY (-1) /* Query the value of journalmode */
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//#define PAGER_JOURNALMODE_DELETE 0 /* Commit by deleting journal file */
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//#define PAGER_JOURNALMODE_PERSIST 1 /* Commit by zeroing journal header */
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//#define PAGER_JOURNALMODE_OFF 2 /* Journal omitted. */
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//#define PAGER_JOURNALMODE_TRUNCATE 3 /* Commit by truncating journal */
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//#define PAGER_JOURNALMODE_MEMORY 4 /* In-memory journal file */
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//#define PAGER_JOURNALMODE_WAL 5 /* Use write-ahead logging */
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private const int PAGER_JOURNALMODE_QUERY = -1;
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private const int PAGER_JOURNALMODE_DELETE = 0;
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private const int PAGER_JOURNALMODE_PERSIST = 1;
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private const int PAGER_JOURNALMODE_OFF = 2;
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private const int PAGER_JOURNALMODE_TRUNCATE = 3;
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private const int PAGER_JOURNALMODE_MEMORY = 4;
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private const int PAGER_JOURNALMODE_WAL = 5;
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/*
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** The remainder of this file contains the declarations of the functions
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** that make up the Pager sub-system API. See source code comments for
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** a detailed description of each routine.
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*/
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/* Open and close a Pager connection. */
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//int sqlite3PagerOpen(
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// sqlite3_vfs*,
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// Pager **ppPager,
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// const char*,
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// int,
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// int,
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// int,
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//// void()(DbPage)
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//);
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//int sqlite3PagerClose(Pager *pPager);
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//int sqlite3PagerReadFileheader(Pager*, int, unsigned char);
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/* Functions used to configure a Pager object. */
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//void sqlite3PagerSetBusyhandler(Pager*, int()(void ), object );
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//int sqlite3PagerSetPagesize(Pager*, u32*, int);
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//int sqlite3PagerMaxPageCount(Pager*, int);
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//void sqlite3PagerSetCachesize(Pager*, int);
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//void sqlite3PagerSetSafetyLevel(Pager*,int,int,int);
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//int sqlite3PagerLockingMode(Pager *, int);
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//int sqlite3PagerSetJournalMode(Pager *, int);
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//int sqlite3PagerGetJournalMode(Pager);
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//int sqlite3PagerOkToChangeJournalMode(Pager);
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//i64 sqlite3PagerJournalSizeLimit(Pager *, i64);
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//sqlite3_backup **sqlite3PagerBackupPtr(Pager);
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/* Functions used to obtain and release page references. */
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//int sqlite3PagerAcquire(Pager *pPager, Pgno pgno, DbPage **ppPage, int clrFlag);
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//#define sqlite3PagerGet(A,B,C) sqlite3PagerAcquire(A,B,C,0)
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//DbPage *sqlite3PagerLookup(Pager *pPager, Pgno pgno);
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//void sqlite3PagerRef(DbPage);
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//void sqlite3PagerUnref(DbPage);
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/* Operations on page references. */
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//int sqlite3PagerWrite(DbPage);
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//void sqlite3PagerDontWrite(DbPage);
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//int sqlite3PagerMovepage(Pager*,DbPage*,Pgno,int);
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//int sqlite3PagerPageRefcount(DbPage);
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//void *sqlite3PagerGetData(DbPage );
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//void *sqlite3PagerGetExtra(DbPage );
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/* Functions used to manage pager transactions and savepoints. */
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//void sqlite3PagerPagecount(Pager*, int);
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//int sqlite3PagerBegin(Pager*, int exFlag, int);
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//int sqlite3PagerCommitPhaseOne(Pager*,string zMaster, int);
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//int sqlite3PagerExclusiveLock(Pager);
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//int sqlite3PagerSync(Pager *pPager);
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//int sqlite3PagerCommitPhaseTwo(Pager);
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//int sqlite3PagerRollback(Pager);
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//int sqlite3PagerOpenSavepoint(Pager *pPager, int n);
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//int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint);
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//int sqlite3PagerSharedLock(Pager *pPager);
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//int sqlite3PagerCheckpoint(Pager *pPager, int, int*, int);
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//int sqlite3PagerWalSupported(Pager* pPager);
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//int sqlite3PagerWalCallback(Pager* pPager);
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//int sqlite3PagerOpenWal(Pager* pPager, int* pisOpen);
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//int sqlite3PagerCloseWal(Pager* pPager);
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/* Functions used to query pager state and configuration. */
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//u8 sqlite3PagerIsreadonly(Pager);
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//int sqlite3PagerRefcount(Pager);
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//int sqlite3PagerMemUsed(Pager);
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//string sqlite3PagerFilename(Pager);
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//const sqlite3_vfs *sqlite3PagerVfs(Pager);
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//sqlite3_file *sqlite3PagerFile(Pager);
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//string sqlite3PagerJournalname(Pager);
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//int sqlite3PagerNosync(Pager);
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//void *sqlite3PagerTempSpace(Pager);
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//int sqlite3PagerIsMemdb(Pager);
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/* Functions used to truncate the database file. */
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//void sqlite3PagerTruncateImage(Pager*,Pgno);
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//#if (SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_WAL)
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//void *sqlite3PagerCodec(DbPage );
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//#endif
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/* Functions to support testing and debugging. */
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//#if !NDEBUG || SQLITE_TEST
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// Pgno sqlite3PagerPagenumber(DbPage);
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// int sqlite3PagerIswriteable(DbPage);
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//#endif
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//#if SQLITE_TEST
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// int *sqlite3PagerStats(Pager);
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// void sqlite3PagerRefdump(Pager);
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// void disable_simulated_io_errors(void);
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// void enable_simulated_io_errors(void);
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//#else
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//# define disable_simulated_io_errors()
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//# define enable_simulated_io_errors()
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//#endif
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}
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} |