using Pgno = System.UInt32; namespace Community.CsharpSqlite { public partial class Sqlite3 { /* ** 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. ************************************************************************* ** Included in SQLite3 port to C#-SQLite; 2008 Noah B Hart ** C#-SQLite is an independent reimplementation of the SQLite software library ** ** SQLITE_SOURCE_ID: 2011-05-19 13:26:54 ed1da510a239ea767a01dc332b667119fa3c908e ** ************************************************************************* */ //#if !_PAGER_H_ //#define _PAGER_H_ /* ** Default maximum size for persistent journal files. A negative ** value means no limit. This value may be overridden using the ** sqlite3PagerJournalSizeLimit() API. See also "PRAGMA journal_size_limit". */ #if !SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT const int SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT = -1;//#define SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT -1 #endif /* ** 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 u32 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; /* ** Page number PAGER_MJ_PGNO is never used in an SQLite database (it is ** reserved for working around a windows/posix incompatibility). It is ** used in the journal to signify that the remainder of the journal file ** is devoted to storing a master journal name - there are no more pages to ** roll back. See comments for function writeMasterJournal() in pager.c ** for details. */ //#define PAGER_MJ_PGNO(x) ((Pgno)((PENDING_BYTE/((x)->pageSize))+1)) static Pgno PAGER_MJ_PGNO( Pager x ) { return ( (Pgno)( ( PENDING_BYTE / ( ( x ).pageSize ) ) + 1 ) ); } /* ** Allowed values for the flags parameter to sqlite3PagerOpen(). ** ** NOTE: These 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 */ //#define PAGER_MEMORY 0x0004 /* In-memory database */ const int PAGER_OMIT_JOURNAL = 0x0001; const int PAGER_NO_READLOCK = 0x0002; const int PAGER_MEMORY = 0x0004; /* ** Valid values for the second argument to sqlite3PagerLockingMode(). */ //#define PAGER_LOCKINGMODE_QUERY -1 //#define PAGER_LOCKINGMODE_NORMAL 0 //#define PAGER_LOCKINGMODE_EXCLUSIVE 1 static int PAGER_LOCKINGMODE_QUERY = -1; static int PAGER_LOCKINGMODE_NORMAL = 0; static int PAGER_LOCKINGMODE_EXCLUSIVE = 1; /* ** Numeric constants that encode the journalmode. */ //#define PAGER_JOURNALMODE_QUERY (-1) /* Query the value of journalmode */ //#define PAGER_JOURNALMODE_DELETE 0 /* Commit by deleting journal file */ //#define PAGER_JOURNALMODE_PERSIST 1 /* Commit by zeroing journal header */ //#define PAGER_JOURNALMODE_OFF 2 /* Journal omitted. */ //#define PAGER_JOURNALMODE_TRUNCATE 3 /* Commit by truncating journal */ //#define PAGER_JOURNALMODE_MEMORY 4 /* In-memory journal file */ //#define PAGER_JOURNALMODE_WAL 5 /* Use write-ahead logging */ const int PAGER_JOURNALMODE_QUERY = -1; const int PAGER_JOURNALMODE_DELETE = 0; const int PAGER_JOURNALMODE_PERSIST = 1; const int PAGER_JOURNALMODE_OFF = 2; const int PAGER_JOURNALMODE_TRUNCATE = 3; const int PAGER_JOURNALMODE_MEMORY = 4; const int PAGER_JOURNALMODE_WAL = 5; /* ** The remainder of this file contains the declarations of the functions ** that make up the Pager sub-system API. See source code comments for ** a detailed description of each routine. */ /* Open and close a Pager connection. */ //int sqlite3PagerOpen( // sqlite3_vfs*, // Pager **ppPager, // const char*, // int, // int, // int, //// void()(DbPage) //); //int sqlite3PagerClose(Pager *pPager); //int sqlite3PagerReadFileheader(Pager*, int, unsigned char); /* Functions used to configure a Pager object. */ //void sqlite3PagerSetBusyhandler(Pager*, int()(void ), object ); //int sqlite3PagerSetPagesize(Pager*, u32*, int); //int sqlite3PagerMaxPageCount(Pager*, int); //void sqlite3PagerSetCachesize(Pager*, int); //void sqlite3PagerSetSafetyLevel(Pager*,int,int,int); //int sqlite3PagerLockingMode(Pager *, int); //int sqlite3PagerSetJournalMode(Pager *, int); //int sqlite3PagerGetJournalMode(Pager); //int sqlite3PagerOkToChangeJournalMode(Pager); //i64 sqlite3PagerJournalSizeLimit(Pager *, i64); //sqlite3_backup **sqlite3PagerBackupPtr(Pager); /* Functions used to obtain and release page references. */ //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); //void sqlite3PagerRef(DbPage); //void sqlite3PagerUnref(DbPage); /* Operations on page references. */ //int sqlite3PagerWrite(DbPage); //void sqlite3PagerDontWrite(DbPage); //int sqlite3PagerMovepage(Pager*,DbPage*,Pgno,int); //int sqlite3PagerPageRefcount(DbPage); //void *sqlite3PagerGetData(DbPage ); //void *sqlite3PagerGetExtra(DbPage ); /* Functions used to manage pager transactions and savepoints. */ //void sqlite3PagerPagecount(Pager*, int); //int sqlite3PagerBegin(Pager*, int exFlag, int); //int sqlite3PagerCommitPhaseOne(Pager*,string zMaster, int); //int sqlite3PagerExclusiveLock(Pager); //int sqlite3PagerSync(Pager *pPager); //int sqlite3PagerCommitPhaseTwo(Pager); //int sqlite3PagerRollback(Pager); //int sqlite3PagerOpenSavepoint(Pager *pPager, int n); //int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint); //int sqlite3PagerSharedLock(Pager *pPager); //int sqlite3PagerCheckpoint(Pager *pPager, int, int*, int); //int sqlite3PagerWalSupported(Pager* pPager); //int sqlite3PagerWalCallback(Pager* pPager); //int sqlite3PagerOpenWal(Pager* pPager, int* pisOpen); //int sqlite3PagerCloseWal(Pager* pPager); /* Functions used to query pager state and configuration. */ //u8 sqlite3PagerIsreadonly(Pager); //int sqlite3PagerRefcount(Pager); //int sqlite3PagerMemUsed(Pager); //string sqlite3PagerFilename(Pager); //const sqlite3_vfs *sqlite3PagerVfs(Pager); //sqlite3_file *sqlite3PagerFile(Pager); //string sqlite3PagerJournalname(Pager); //int sqlite3PagerNosync(Pager); //void *sqlite3PagerTempSpace(Pager); //int sqlite3PagerIsMemdb(Pager); /* Functions used to truncate the database file. */ //void sqlite3PagerTruncateImage(Pager*,Pgno); //#if (SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_WAL) //void *sqlite3PagerCodec(DbPage ); //#endif /* Functions to support testing and debugging. */ //#if !NDEBUG || SQLITE_TEST // Pgno sqlite3PagerPagenumber(DbPage); // int sqlite3PagerIswriteable(DbPage); //#endif //#if SQLITE_TEST // int *sqlite3PagerStats(Pager); // void sqlite3PagerRefdump(Pager); // void disable_simulated_io_errors(void); // void enable_simulated_io_errors(void); //#else //# define disable_simulated_io_errors() //# define enable_simulated_io_errors() //#endif } }