$(TOP)/src/printf.c \
  $(TOP)/src/test1.c \
  $(TOP)/src/test2.c \
  $(TOP)/src/test3.c \
  $(TOP)/src/test4.c \
  $(TOP)/src/test5.c \
  $(TOP)/src/test6.c \

  $(TOP)/src/utf.c \
  $(TOP)/src/util.c \
  $(TOP)/src/vdbe.c \
  $(TOP)/src/md5.c \
  $(TOP)/src/where.c

# Header files used by all library source files.
................................................................................
   sqlite3.h  \
   $(TOP)/src/btree.h \
   $(TOP)/src/hash.h \
   opcodes.h \
   $(TOP)/src/os.h \
   $(TOP)/src/os_common.h \
   $(TOP)/src/sqliteInt.h  \

   $(TOP)/src/vdbe.h \
   parse.h

# Header files used by the VDBE submodule
#
VDBEHDR = \
   $(HDR) \

  $(TOP)/src/printf.c \
  $(TOP)/src/test1.c \
  $(TOP)/src/test2.c \
  $(TOP)/src/test3.c \
  $(TOP)/src/test4.c \
  $(TOP)/src/test5.c \
  $(TOP)/src/test6.c \
  $(TOP)/src/test_async.c \
  $(TOP)/src/utf.c \
  $(TOP)/src/util.c \
  $(TOP)/src/vdbe.c \
  $(TOP)/src/md5.c \
  $(TOP)/src/where.c

# Header files used by all library source files.
................................................................................
   sqlite3.h  \
   $(TOP)/src/btree.h \
   $(TOP)/src/hash.h \
   opcodes.h \
   $(TOP)/src/os.h \
   $(TOP)/src/os_common.h \
   $(TOP)/src/sqliteInt.h  \
   $(TOP)/src/sqlite3_aux.h \
   $(TOP)/src/vdbe.h \
   parse.h

# Header files used by the VDBE submodule
#
VDBEHDR = \
   $(HDR) \

  $(TOP)/src/printf.c \
  $(TOP)/src/test1.c \
  $(TOP)/src/test2.c \
  $(TOP)/src/test3.c \
  $(TOP)/src/test4.c \
  $(TOP)/src/test5.c \
  $(TOP)/src/test6.c \

  $(TOP)/src/utf.c \
  $(TOP)/src/util.c \
  $(TOP)/src/vdbe.c \
  $(TOP)/src/md5.c \
  $(TOP)/src/where.c

#  $(TOP)/src/test_async.c 
................................................................................
   sqlite3.h  \
   $(TOP)/src/btree.h \
   $(TOP)/src/hash.h \
   opcodes.h \
   $(TOP)/src/os.h \
   $(TOP)/src/os_common.h \
   $(TOP)/src/sqliteInt.h  \

   $(TOP)/src/vdbe.h \
   parse.h

# Header files used by the VDBE submodule
#
VDBEHDR = \
   $(HDR) \

  $(TOP)/src/printf.c \
  $(TOP)/src/test1.c \
  $(TOP)/src/test2.c \
  $(TOP)/src/test3.c \
  $(TOP)/src/test4.c \
  $(TOP)/src/test5.c \
  $(TOP)/src/test6.c \
  $(TOP)/src/test_async.c \
  $(TOP)/src/utf.c \
  $(TOP)/src/util.c \
  $(TOP)/src/vdbe.c \
  $(TOP)/src/md5.c \
  $(TOP)/src/where.c

#  $(TOP)/src/test_async.c 
................................................................................
   sqlite3.h  \
   $(TOP)/src/btree.h \
   $(TOP)/src/hash.h \
   opcodes.h \
   $(TOP)/src/os.h \
   $(TOP)/src/os_common.h \
   $(TOP)/src/sqliteInt.h  \
   $(TOP)/src/sqlite3_aux.h \
   $(TOP)/src/vdbe.h \
   parse.h

# Header files used by the VDBE submodule
#
VDBEHDR = \
   $(HDR) \

}
int sqlite3OsLockState(OsFile *id){
  return id->pMethod->xLockState(id);
}
int sqlite3OsCheckReservedLock(OsFile *id){
  return id->pMethod->xCheckReservedLock(id);
}

static void**getOsRoutinePtr(int eRoutine){
  switch( eRoutine ){
    case SQLITE_OS_ROUTINE_OPENREADWRITE:
      return (void **)(&sqlite3Os.xOpenReadWrite);
    case SQLITE_OS_ROUTINE_OPENREADONLY:
      return (void **)(&sqlite3Os.xOpenReadOnly);
    case SQLITE_OS_ROUTINE_OPENEXCLUSIVE:
      return (void **)(&sqlite3Os.xOpenExclusive);
    case SQLITE_OS_ROUTINE_DELETE:
      return (void **)(&sqlite3Os.xDelete);
    case SQLITE_OS_ROUTINE_FILEEXISTS:
      return (void **)(&sqlite3Os.xFileExists);
    case SQLITE_OS_ROUTINE_SYNCDIRECTORY:
      return (void **)(&sqlite3Os.xSyncDirectory);
    default:
      assert(!"Illegal eRoutine value");
  }

  return 0;
}

void *sqlite3_os_routine_get(int eRoutine){
  return *getOsRoutinePtr(eRoutine);
}

void *sqlite3_os_routine_set(int eRoutine, void *pRoutine){
  void **ppRet = getOsRoutinePtr(eRoutine);
  void *pRet = *ppRet;
  *ppRet = pRoutine;
  return pRet;
}

void sqlite3_os_enter_mutex(){
  sqlite3Os.xEnterMutex();
}
void sqlite3_os_leave_mutex(){
  sqlite3Os.xLeaveMutex();
}

}
int sqlite3OsLockState(OsFile *id){
  return id->pMethod->xLockState(id);
}
int sqlite3OsCheckReservedLock(OsFile *id){
  return id->pMethod->xCheckReservedLock(id);
}


















struct sqlite3OsVtbl *sqlite3_os_switch(void){
  return &sqlite3Os;
}

**
** This header file (together with is companion C source-code file
** "os.c") attempt to abstract the underlying operating system so that
** the SQLite library will work on both POSIX and windows systems.
*/
#ifndef _SQLITE_OS_H_
#define _SQLITE_OS_H_


/*
** Figure out if we are dealing with Unix, Windows or MacOS.
**
** N.B. MacOS means Mac Classic (or Carbon). Treat Darwin (OS X) as Unix.
**      The MacOS build is designed to use CodeWarrior (tested with v8)
*/
................................................................................
#else
# ifndef OS_WIN
#  define OS_WIN 0
# endif
#endif


/*
** Forward declarations
*/
typedef struct OsFile OsFile;
typedef struct IoMethod IoMethod;

/*
** An instance of the following structure contains pointers to all
** methods on an OsFile object.
*/
struct IoMethod {
  int (*xClose)(OsFile**);
  int (*xOpenDirectory)(OsFile*, const char*);
  int (*xRead)(OsFile*, void*, int amt);
  int (*xWrite)(OsFile*, const void*, int amt);
  int (*xSeek)(OsFile*, i64 offset);
  int (*xTruncate)(OsFile*, i64 size);
  int (*xSync)(OsFile*, int);
  void (*xSetFullSync)(OsFile *id, int setting);
  int (*xFileHandle)(OsFile *id);
  int (*xFileSize)(OsFile*, i64 *pSize);
  int (*xLock)(OsFile*, int);
  int (*xUnlock)(OsFile*, int);
  int (*xLockState)(OsFile *id);
  int (*xCheckReservedLock)(OsFile *id);
};

/*
** The OsFile object describes an open disk file in an OS-dependent way.
** The version of OsFile defined here is a generic version.  Each OS
** implementation defines its own subclass of this structure that contains
** additional information needed to handle file I/O.  But the pMethod
** entry (pointing to the virtual function table) always occurs first
** so that we can always find the appropriate methods.
*/
struct OsFile {
  IoMethod const *pMethod;
};

/*
** Define the maximum size of a temporary filename
*/
#if OS_WIN
# include <windows.h>
# define SQLITE_TEMPNAME_SIZE (MAX_PATH+50)
#else
................................................................................
** prematurely, old temporary files can be easily identified. This can be done
** using -DTEMP_FILE_PREFIX=myprefix_ on the compiler command line.
*/
#ifndef TEMP_FILE_PREFIX
# define TEMP_FILE_PREFIX "sqlite_"
#endif

/*
** The following values may be passed as the second argument to
** sqlite3OsLock(). The various locks exhibit the following semantics:
**
** SHARED:    Any number of processes may hold a SHARED lock simultaneously.
** RESERVED:  A single process may hold a RESERVED lock on a file at
**            any time. Other processes may hold and obtain new SHARED locks.
** PENDING:   A single process may hold a PENDING lock on a file at
**            any one time. Existing SHARED locks may persist, but no new
**            SHARED locks may be obtained by other processes.
** EXCLUSIVE: An EXCLUSIVE lock precludes all other locks.
**
** PENDING_LOCK may not be passed directly to sqlite3OsLock(). Instead, a
** process that requests an EXCLUSIVE lock may actually obtain a PENDING
** lock. This can be upgraded to an EXCLUSIVE lock by a subsequent call to
** sqlite3OsLock().
*/
#define NO_LOCK         0
#define SHARED_LOCK     1
#define RESERVED_LOCK   2
#define PENDING_LOCK    3
#define EXCLUSIVE_LOCK  4

/*
** File Locking Notes:  (Mostly about windows but also some info for Unix)
**
** We cannot use LockFileEx() or UnlockFileEx() on Win95/98/ME because
** those functions are not available.  So we use only LockFile() and
** UnlockFile().
**
** LockFile() prevents not just writing but also reading by other processes.
** A SHARED_LOCK is obtained by locking a single randomly-chosen 
** byte out of a specific range of bytes. The lock byte is obtained at 
** random so two separate readers can probably access the file at the 
** same time, unless they are unlucky and choose the same lock byte.
** An EXCLUSIVE_LOCK is obtained by locking all bytes in the range.
** There can only be one writer.  A RESERVED_LOCK is obtained by locking
** a single byte of the file that is designated as the reserved lock byte.
** A PENDING_LOCK is obtained by locking a designated byte different from
** the RESERVED_LOCK byte.
**
** On WinNT/2K/XP systems, LockFileEx() and UnlockFileEx() are available,
** which means we can use reader/writer locks.  When reader/writer locks
** are used, the lock is placed on the same range of bytes that is used
** for probabilistic locking in Win95/98/ME.  Hence, the locking scheme
** will support two or more Win95 readers or two or more WinNT readers.
** But a single Win95 reader will lock out all WinNT readers and a single
** WinNT reader will lock out all other Win95 readers.
**
** The following #defines specify the range of bytes used for locking.
** SHARED_SIZE is the number of bytes available in the pool from which
** a random byte is selected for a shared lock.  The pool of bytes for
** shared locks begins at SHARED_FIRST. 
**
** These #defines are available in os.h so that Unix can use the same
** byte ranges for locking.  This leaves open the possiblity of having
** clients on win95, winNT, and unix all talking to the same shared file
** and all locking correctly.  To do so would require that samba (or whatever
** tool is being used for file sharing) implements locks correctly between
** windows and unix.  I'm guessing that isn't likely to happen, but by
** using the same locking range we are at least open to the possibility.
**
** Locking in windows is manditory.  For this reason, we cannot store
** actual data in the bytes used for locking.  The pager never allocates
** the pages involved in locking therefore.  SHARED_SIZE is selected so
** that all locks will fit on a single page even at the minimum page size.
** PENDING_BYTE defines the beginning of the locks.  By default PENDING_BYTE
** is set high so that we don't have to allocate an unused page except
** for very large databases.  But one should test the page skipping logic 
** by setting PENDING_BYTE low and running the entire regression suite.
**
** Changing the value of PENDING_BYTE results in a subtly incompatible
** file format.  Depending on how it is changed, you might not notice
** the incompatibility right away, even running a full regression test.
** The default location of PENDING_BYTE is the first byte past the
** 1GB boundary.
**
*/
#ifndef SQLITE_TEST
#define PENDING_BYTE      0x40000000  /* First byte past the 1GB boundary */
#else
extern unsigned int sqlite3_pending_byte;
#define PENDING_BYTE sqlite3_pending_byte
#endif

#define RESERVED_BYTE     (PENDING_BYTE+1)
#define SHARED_FIRST      (PENDING_BYTE+2)
#define SHARED_SIZE       510

/*
** A single global instance of the following structure holds pointers to the
** various system-specific interface routines.
*/
extern struct sqlite3OsVtbl {
  int (*xOpenReadWrite)(const char*, OsFile**, int*);
  int (*xOpenExclusive)(const char*, OsFile**, int);
  int (*xOpenReadOnly)(const char*, OsFile**);

  int (*xDelete)(const char*);
  int (*xFileExists)(const char*);
  char *(*xFullPathname)(const char*);
  int (*xIsDirWritable)(char*);
  int (*xSyncDirectory)(const char*);
  int (*xTempFileName)(char*);

  int (*xRandomSeed)(char*);
  int (*xSleep)(int ms);
  int (*xCurrentTime)(double*);

  void (*xEnterMutex)(void);
  void (*xLeaveMutex)(void);
  int (*xInMutex)(void);
  void *(*xThreadSpecificData)(int);

  void *(*xMalloc)(int);
  void *(*xRealloc)(void *, int);
  void (*xFree)(void *);
  int (*xAllocationSize)(void *);
} sqlite3Os;


/*
** The semi-published API for setting and getting methods from the 
** global sqlite3OsVtbl structure. Neither sqlite3_os_routine_XXX() function
** is intriniscally thread-safe.
**
** External get/set access is only provided to the routines identified 
** by the following SQLITE_OS_ROUTINE symbols:
*/
#define SQLITE_OS_ROUTINE_OPENREADWRITE   1
#define SQLITE_OS_ROUTINE_OPENREADONLY    2
#define SQLITE_OS_ROUTINE_OPENEXCLUSIVE   3
#define SQLITE_OS_ROUTINE_DELETE          4
#define SQLITE_OS_ROUTINE_FILEEXISTS      5
#define SQLITE_OS_ROUTINE_SYNCDIRECTORY   6
void *sqlite3_os_routine_get(int);
void *sqlite3_os_routine_set(int, void *);

void sqlite3_os_enter_mutex();
void sqlite3_os_leave_mutex();

/*
** Prototypes for routines found in os.c
*/
int sqlite3OsClose(OsFile**);
int sqlite3OsOpenDirectory(OsFile*, const char*);
int sqlite3OsRead(OsFile*, void*, int amt);
int sqlite3OsWrite(OsFile*, const void*, int amt);
int sqlite3OsSeek(OsFile*, i64 offset);
int sqlite3OsTruncate(OsFile*, i64 size);
int sqlite3OsSync(OsFile*, int);
void sqlite3OsSetFullSync(OsFile *id, int setting);
int sqlite3OsFileHandle(OsFile *id);
int sqlite3OsFileSize(OsFile*, i64 *pSize);
int sqlite3OsLock(OsFile*, int);
int sqlite3OsUnlock(OsFile*, int);
int sqlite3OsLockState(OsFile *id);
int sqlite3OsCheckReservedLock(OsFile *id);


#endif /* _SQLITE_OS_H_ */

**
** This header file (together with is companion C source-code file
** "os.c") attempt to abstract the underlying operating system so that
** the SQLite library will work on both POSIX and windows systems.
*/
#ifndef _SQLITE_OS_H_
#define _SQLITE_OS_H_
#include "sqlite3_aux.h"

/*
** Figure out if we are dealing with Unix, Windows or MacOS.
**
** N.B. MacOS means Mac Classic (or Carbon). Treat Darwin (OS X) as Unix.
**      The MacOS build is designed to use CodeWarrior (tested with v8)
*/
................................................................................
#else
# ifndef OS_WIN
#  define OS_WIN 0
# endif
#endif









































/*
** Define the maximum size of a temporary filename
*/
#if OS_WIN
# include <windows.h>
# define SQLITE_TEMPNAME_SIZE (MAX_PATH+50)
#else
................................................................................
** prematurely, old temporary files can be easily identified. This can be done
** using -DTEMP_FILE_PREFIX=myprefix_ on the compiler command line.
*/
#ifndef TEMP_FILE_PREFIX
# define TEMP_FILE_PREFIX "sqlite_"
#endif

































































































































































#endif /* _SQLITE_OS_H_ */

/*
** 2006 January 05
**
** 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 auxiliary interfaces to the SQLite library.
** This header file is a companion to the official "sqlite.h" interface
** file.  The difference is that the extraordinary efforts are made to
** insure that the interface defined in "sqlite.h" is always backwards
** compatible.  No such guarantees are made for the auxiliary interfaces
** defined in this header file.  The interfaces defined here are subject
** to change in future releases of SQLite.
**
** We justify the volitility of the interfaces defined here by noting that
** these interfaces are designed not for users of the SQLite library but
** by code that wishes to expand and extend the SQLite library.  Some
** knowledge of what SQLite is doing internally is necessary to use these
** interfaces.  
**
** We have no intention of changing the interfaces defined in this file
** gratuitously.  No interfaces will be changed without good reason.  But
** on the other hand, if the quality and functionality of SQLite can be
** enhanced by modifying the interfaces found here, then we will do so.
**
** Since these interfaces are variable, it is suggested that they not
** be accessed as a shared library.  Users of these interfaces should
** statically link.
**
** @(#) $Id: sqlite3_aux.h,v 1.1 2006/01/06 03:29:58 drh Exp $
*/
/*
** Forward declarations
*/
typedef struct OsFile OsFile;
typedef struct IoMethod IoMethod;

/*
** An instance of the following structure contains pointers to all
** methods on an OsFile object.
*/
struct IoMethod {
  int (*xClose)(OsFile**);
  int (*xOpenDirectory)(OsFile*, const char*);
  int (*xRead)(OsFile*, void*, int amt);
  int (*xWrite)(OsFile*, const void*, int amt);
  int (*xSeek)(OsFile*, i64 offset);
  int (*xTruncate)(OsFile*, i64 size);
  int (*xSync)(OsFile*, int);
  void (*xSetFullSync)(OsFile *id, int setting);
  int (*xFileHandle)(OsFile *id);
  int (*xFileSize)(OsFile*, i64 *pSize);
  int (*xLock)(OsFile*, int);
  int (*xUnlock)(OsFile*, int);
  int (*xLockState)(OsFile *id);
  int (*xCheckReservedLock)(OsFile *id);
};

/*
** The OsFile object describes an open disk file in an OS-dependent way.
** The version of OsFile defined here is a generic version.  Each OS
** implementation defines its own subclass of this structure that contains
** additional information needed to handle file I/O.  But the pMethod
** entry (pointing to the virtual function table) always occurs first
** so that we can always find the appropriate methods.
*/
struct OsFile {
  IoMethod const *pMethod;
};

/*
** The following values may be passed as the second argument to
** sqlite3OsLock(). The various locks exhibit the following semantics:
**
** SHARED:    Any number of processes may hold a SHARED lock simultaneously.
** RESERVED:  A single process may hold a RESERVED lock on a file at
**            any time. Other processes may hold and obtain new SHARED locks.
** PENDING:   A single process may hold a PENDING lock on a file at
**            any one time. Existing SHARED locks may persist, but no new
**            SHARED locks may be obtained by other processes.
** EXCLUSIVE: An EXCLUSIVE lock precludes all other locks.
**
** PENDING_LOCK may not be passed directly to sqlite3OsLock(). Instead, a
** process that requests an EXCLUSIVE lock may actually obtain a PENDING
** lock. This can be upgraded to an EXCLUSIVE lock by a subsequent call to
** sqlite3OsLock().
*/
#define NO_LOCK         0
#define SHARED_LOCK     1
#define RESERVED_LOCK   2
#define PENDING_LOCK    3
#define EXCLUSIVE_LOCK  4

/*
** File Locking Notes:  (Mostly about windows but also some info for Unix)
**
** We cannot use LockFileEx() or UnlockFileEx() on Win95/98/ME because
** those functions are not available.  So we use only LockFile() and
** UnlockFile().
**
** LockFile() prevents not just writing but also reading by other processes.
** A SHARED_LOCK is obtained by locking a single randomly-chosen 
** byte out of a specific range of bytes. The lock byte is obtained at 
** random so two separate readers can probably access the file at the 
** same time, unless they are unlucky and choose the same lock byte.
** An EXCLUSIVE_LOCK is obtained by locking all bytes in the range.
** There can only be one writer.  A RESERVED_LOCK is obtained by locking
** a single byte of the file that is designated as the reserved lock byte.
** A PENDING_LOCK is obtained by locking a designated byte different from
** the RESERVED_LOCK byte.
**
** On WinNT/2K/XP systems, LockFileEx() and UnlockFileEx() are available,
** which means we can use reader/writer locks.  When reader/writer locks
** are used, the lock is placed on the same range of bytes that is used
** for probabilistic locking in Win95/98/ME.  Hence, the locking scheme
** will support two or more Win95 readers or two or more WinNT readers.
** But a single Win95 reader will lock out all WinNT readers and a single
** WinNT reader will lock out all other Win95 readers.
**
** The following #defines specify the range of bytes used for locking.
** SHARED_SIZE is the number of bytes available in the pool from which
** a random byte is selected for a shared lock.  The pool of bytes for
** shared locks begins at SHARED_FIRST. 
**
** These #defines are available in sqlite_aux.h so that adaptors for
** connecting SQLite to other operating systems can use the same byte
** ranges for locking.  In particular, the same locking strategy and
** byte ranges are used for Unix.  This leaves open the possiblity of having
** clients on win95, winNT, and unix all talking to the same shared file
** and all locking correctly.  To do so would require that samba (or whatever
** tool is being used for file sharing) implements locks correctly between
** windows and unix.  I'm guessing that isn't likely to happen, but by
** using the same locking range we are at least open to the possibility.
**
** Locking in windows is manditory.  For this reason, we cannot store
** actual data in the bytes used for locking.  The pager never allocates
** the pages involved in locking therefore.  SHARED_SIZE is selected so
** that all locks will fit on a single page even at the minimum page size.
** PENDING_BYTE defines the beginning of the locks.  By default PENDING_BYTE
** is set high so that we don't have to allocate an unused page except
** for very large databases.  But one should test the page skipping logic 
** by setting PENDING_BYTE low and running the entire regression suite.
**
** Changing the value of PENDING_BYTE results in a subtly incompatible
** file format.  Depending on how it is changed, you might not notice
** the incompatibility right away, even running a full regression test.
** The default location of PENDING_BYTE is the first byte past the
** 1GB boundary.
**
*/
#ifndef SQLITE_TEST
#define PENDING_BYTE      0x40000000  /* First byte past the 1GB boundary */
#else
extern unsigned int sqlite3_pending_byte;
#define PENDING_BYTE sqlite3_pending_byte
#endif

#define RESERVED_BYTE     (PENDING_BYTE+1)
#define SHARED_FIRST      (PENDING_BYTE+2)
#define SHARED_SIZE       510

/*
** A single global instance of the following structure holds pointers to 
** the routines that SQLite uses to talk with the underlying operating
** system.  Clever programmers can substitute alternative implementations
** of these routine (prior to using any SQLite API!) in order to modify
** the way SQLite interacts with its environment.  For example, modifications
** could be supplied that allow SQLite to talk to a virtual file system.
*/
extern struct sqlite3OsVtbl {
  int (*xOpenReadWrite)(const char*, OsFile**, int*);
  int (*xOpenExclusive)(const char*, OsFile**, int);
  int (*xOpenReadOnly)(const char*, OsFile**);

  int (*xDelete)(const char*);
  int (*xFileExists)(const char*);
  char *(*xFullPathname)(const char*);
  int (*xIsDirWritable)(char*);
  int (*xSyncDirectory)(const char*);
  int (*xTempFileName)(char*);

  int (*xRandomSeed)(char*);
  int (*xSleep)(int ms);
  int (*xCurrentTime)(double*);

  void (*xEnterMutex)(void);
  void (*xLeaveMutex)(void);
  int (*xInMutex)(void);
  void *(*xThreadSpecificData)(int);

  void *(*xMalloc)(int);
  void *(*xRealloc)(void *, int);
  void (*xFree)(void *);
  int (*xAllocationSize)(void *);
} sqlite3Os;

/*
** The following API routine returns a pointer to the sqlite3Os global
** variable.  It is probably easier just to reference the global variable
** directly.  This routine is provided for backwards compatibility with
** an older interface design.
*/
struct sqlite3OsVtbl *sqlite3_os_switch(void);


/*
** The following are prototypes of convenience routines that simply
** call the corresponding routines in the OsFile.pMethod virtual
** function table.
*/
int sqlite3OsClose(OsFile**);
int sqlite3OsOpenDirectory(OsFile*, const char*);
int sqlite3OsRead(OsFile*, void*, int amt);
int sqlite3OsWrite(OsFile*, const void*, int amt);
int sqlite3OsSeek(OsFile*, i64 offset);
int sqlite3OsTruncate(OsFile*, i64 size);
int sqlite3OsSync(OsFile*, int);
void sqlite3OsSetFullSync(OsFile *id, int setting);
int sqlite3OsFileHandle(OsFile *id);
int sqlite3OsFileSize(OsFile*, i64 *pSize);
int sqlite3OsLock(OsFile*, int);
int sqlite3OsUnlock(OsFile*, int);
int sqlite3OsLockState(OsFile *id);
int sqlite3OsCheckReservedLock(OsFile *id);

**    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.
**
*************************************************************************
** A TCL Interface to SQLite
**
** $Id: tclsqlite.c,v 1.145 2006/01/05 15:50:07 drh Exp $
*/
#ifndef NO_TCL     /* Omit this whole file if TCL is unavailable */

#include "sqliteInt.h"
#include "hash.h"
#include "tcl.h"
#include <stdlib.h>
................................................................................

    Sqlitetest1_Init(interp);
    Sqlitetest2_Init(interp);
    Sqlitetest3_Init(interp);
    Sqlitetest4_Init(interp);
    Sqlitetest5_Init(interp);
    Sqlitetest6_Init(interp);
    /* Sqlitetestasync_Init(interp); */
    Md5_Init(interp);
#ifdef SQLITE_SSE
    Sqlitetestsse_Init(interp);
#endif
  }
#endif
  if( argc>=2 || TCLSH==2 ){

**    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.
**
*************************************************************************
** A TCL Interface to SQLite
**
** $Id: tclsqlite.c,v 1.146 2006/01/06 03:29:58 drh Exp $
*/
#ifndef NO_TCL     /* Omit this whole file if TCL is unavailable */

#include "sqliteInt.h"
#include "hash.h"
#include "tcl.h"
#include <stdlib.h>
................................................................................

    Sqlitetest1_Init(interp);
    Sqlitetest2_Init(interp);
    Sqlitetest3_Init(interp);
    Sqlitetest4_Init(interp);
    Sqlitetest5_Init(interp);
    Sqlitetest6_Init(interp);
    Sqlitetestasync_Init(interp);
    Md5_Init(interp);
#ifdef SQLITE_SSE
    Sqlitetestsse_Init(interp);
#endif
  }
#endif
  if( argc>=2 || TCLSH==2 ){

** to sqlite3_async_flush() is responsible for calling sqliteFree().
**
** Once an AsyncWrite structure has been added to the list, it must not be
** read or modified by the caller (in case another thread calls
** sqlite3_async_flush() ).
*/
static void addAsyncWrite(AsyncWrite *pWrite){
  sqlite3_os_enter_mutex();
  assert( !pWrite->pNext );
  if( sqlite3_asyncListLast ){
    assert( sqlite3_asyncListFirst );
    sqlite3_asyncListLast->pNext = pWrite;
  }else{
    sqlite3_asyncListFirst = pWrite;
  }
  sqlite3_asyncListLast = pWrite;
  sqlite3_os_leave_mutex();
}

/*
** The caller should already hold the mutex when this is called.
*/
static void removeAsyncWrite(AsyncWrite *p){
  assert( p==sqlite3_asyncListFirst );
................................................................................
static int asyncRead(OsFile *id, void *obuf, int amt){
  int rc = SQLITE_OK;
  i64 filesize;
  int nRead;
  AsyncFile *pFile = (AsyncFile *)id;

  /* Grab the mutex for the duration of the call */
  sqlite3_os_enter_mutex();

  if( pFile->pBaseRead ){
    rc = sqlite3OsFileSize(pFile->pBaseRead, &filesize);
    if( rc!=SQLITE_OK ){
      goto asyncread_out;
    }
    rc = sqlite3OsSeek(pFile->pBaseRead, pFile->iOffset);
................................................................................
      }
    }

    pFile->iOffset += (i64)amt;
  }

asyncread_out:
  sqlite3_os_leave_mutex();
  return rc;
}

/*
** Seek to the specified offset. This just adjusts the AsyncFile.iOffset 
** variable - calling seek() on the underlying file is defered until the 
** next read() or write() operation. 
................................................................................
**
** This method holds the mutex from start to finish.
*/
int asyncFileSize(OsFile *id, i64 *pSize){
  int rc = SQLITE_OK;
  i64 s = 0;
  OsFile *pBase;
  sqlite3_os_enter_mutex();

  /* Read the filesystem size from the base file. If pBaseRead is NULL, this
  ** means the file hasn't been opened yet. In this case all relevant data 
  ** must be in the write-op queue anyway, so we can omit reading from the
  ** file-system.
  */
  pBase = ((AsyncFile *)id)->pBaseRead;
................................................................................
            s = MIN(s, p->nByte);
            break;
        }
      }
    }
    *pSize = s;
  }
  sqlite3_os_leave_mutex();
  return rc;
}

/*
** Return the operating system file handle. This is only used for debugging 
** at the moment anyway.
*/
................................................................................
** in the file system. 
**
** This method holds the mutex from start to finish.
*/
static int asyncFileExists(const char *z){
  int ret;
  AsyncWrite *p;
  sqlite3_os_enter_mutex();

  /* See if the real file system contains the specified file.  */
  ret = xOrigFileExists(z);
  
  for(p=sqlite3_asyncListFirst; p; p = p->pNext){
    if( p->op==ASYNC_DELETE && 0==strcmp(p->zBuf, z) ){
      ret = 0;
    }else if( p->op==ASYNC_OPENEXCLUSIVE && 0==strcmp(p->zBuf, z) ){
      ret = 1;
    }
  }

  sqlite3_os_leave_mutex();
  return ret;
}

/*
** The following routine is one of two exported symbols in this module (along
** with sqlite3_async_flush(), see below). This routine should be called
** once to enable the asynchronous IO features implemented in this file. If 
** the features are successfully enabled (or if they have already been 
** enabled) then SQLITE_OK is returned. Otherwise, SQLITE_MISUSE.
*/
int sqlite3_async_enable(void){
  if( xOrigOpenReadWrite==0 ){
#define ROUTINE(a,b,c) {(void**)&a,SQLITE_OS_ROUTINE_ ## b,(void *)c}
    struct ReplacementOp {
      void ** pOldRoutine;
      int eRoutine;
      void * pNewRoutine;
    } aRoutines[] = {
      ROUTINE(xOrigOpenReadWrite, OPENREADWRITE, asyncOpenReadWrite),
      ROUTINE(xOrigOpenReadOnly, OPENREADONLY, asyncOpenReadOnly), 
      ROUTINE(xOrigOpenExclusive, OPENEXCLUSIVE, asyncOpenExclusive), 
      ROUTINE(xOrigDelete, DELETE, asyncDelete), 
      ROUTINE(xOrigFileExists, FILEEXISTS, asyncFileExists), 
      ROUTINE(xOrigSyncDirectory, SYNCDIRECTORY, asyncSyncDirectory)
    };
#undef ROUTINE
    int i;

    sqlite3_os_enter_mutex();
    for(i=0; i<sizeof(aRoutines)/sizeof(aRoutines[0]); i++){
      struct ReplacementOp *p = &aRoutines[i];
      *(p->pOldRoutine) = sqlite3_os_routine_set(p->eRoutine, p->pNewRoutine);
    }
    sqlite3_os_leave_mutex();
  }
  return SQLITE_OK;
}

/* 
** This function is called externally to perform queued write and sync
** operations. It returns when an IO error occurs or there are no more queued
................................................................................
  int rc = SQLITE_OK;

  /* Grab the mutex and set the sqlite3_asyncIoBusy flag to make sure this
  ** is the only thread performing an sqlite3_async_flush() at this time.
  ** Or, if some other thread is already inside this function, return 
  ** SQLITE_BUSY to the caller.
  */
  sqlite3_os_enter_mutex();
  if( sqlite3_asyncIoBusy ){
    sqlite3_os_leave_mutex();
    return SQLITE_BUSY;
  }
  sqlite3_asyncIoBusy = 1;

  while( (p = sqlite3_asyncListFirst) && rc==SQLITE_OK ){
    int isInsideMutex = 1;

................................................................................
    if( p->pFile ){
      pBase = p->pFile->pBaseWrite;
      if( 
        p->op==ASYNC_CLOSE || 
        p->op==ASYNC_OPENEXCLUSIVE ||
        (pBase && (p->op==ASYNC_SYNC || p->op==ASYNC_WRITE) ) 
      ){
        sqlite3_os_leave_mutex();
        isInsideMutex = 0;
      }
      if( !pBase ){
        pBase = p->pFile->pBaseRead;
      }
    }

................................................................................

      case ASYNC_OPENEXCLUSIVE: {
        AsyncFile *pFile = p->pFile;
        int delFlag = ((p->iOffset)?1:0);
        OsFile *pBase = 0;
        rc = xOrigOpenExclusive(p->zBuf, &pBase, delFlag);

        sqlite3_os_enter_mutex();
        isInsideMutex = 1;
        if( rc==SQLITE_OK ){
          pFile->pBaseRead = pBase;
        }
        break;
      }

................................................................................
    }

    /* If we didn't hang on to the mutex during the IO op, obtain it now
    ** so that the AsyncWrite structure can be safely removed from the 
    ** global write-op queue.
    */
    if( !isInsideMutex ){
      sqlite3_os_enter_mutex();
    }
    if( rc==SQLITE_OK ){
      removeAsyncWrite(p);
      sqlite3Os.xFree(p);
    }
  }

  /* Clear the io-busy flag and exit the mutex */
  assert( sqlite3_asyncIoBusy );
  sqlite3_asyncIoBusy = 0;
  sqlite3_os_leave_mutex();

  return rc;
}

/*
** The following code defines a Tcl interface for testing the asynchronous 
** IO implementation in this file.
................................................................................
int Sqlitetestasync_Init(Tcl_Interp *interp){
  Tcl_CreateObjCommand(interp,"sqlite3_async_enable",testAsyncEnable,0,0);
  Tcl_CreateObjCommand(interp,"sqlite3_async_flush",testAsyncFlush,0,0);
  return TCL_OK;
}

#endif

** to sqlite3_async_flush() is responsible for calling sqliteFree().
**
** Once an AsyncWrite structure has been added to the list, it must not be
** read or modified by the caller (in case another thread calls
** sqlite3_async_flush() ).
*/
static void addAsyncWrite(AsyncWrite *pWrite){
  sqlite3Os.xEnterMutex();
  assert( !pWrite->pNext );
  if( sqlite3_asyncListLast ){
    assert( sqlite3_asyncListFirst );
    sqlite3_asyncListLast->pNext = pWrite;
  }else{
    sqlite3_asyncListFirst = pWrite;
  }
  sqlite3_asyncListLast = pWrite;
  sqlite3Os.xLeaveMutex();
}

/*
** The caller should already hold the mutex when this is called.
*/
static void removeAsyncWrite(AsyncWrite *p){
  assert( p==sqlite3_asyncListFirst );
................................................................................
static int asyncRead(OsFile *id, void *obuf, int amt){
  int rc = SQLITE_OK;
  i64 filesize;
  int nRead;
  AsyncFile *pFile = (AsyncFile *)id;

  /* Grab the mutex for the duration of the call */
  sqlite3Os.xEnterMutex();

  if( pFile->pBaseRead ){
    rc = sqlite3OsFileSize(pFile->pBaseRead, &filesize);
    if( rc!=SQLITE_OK ){
      goto asyncread_out;
    }
    rc = sqlite3OsSeek(pFile->pBaseRead, pFile->iOffset);
................................................................................
      }
    }

    pFile->iOffset += (i64)amt;
  }

asyncread_out:
  sqlite3Os.xLeaveMutex();
  return rc;
}

/*
** Seek to the specified offset. This just adjusts the AsyncFile.iOffset 
** variable - calling seek() on the underlying file is defered until the 
** next read() or write() operation. 
................................................................................
**
** This method holds the mutex from start to finish.
*/
int asyncFileSize(OsFile *id, i64 *pSize){
  int rc = SQLITE_OK;
  i64 s = 0;
  OsFile *pBase;
  sqlite3Os.xEnterMutex();

  /* Read the filesystem size from the base file. If pBaseRead is NULL, this
  ** means the file hasn't been opened yet. In this case all relevant data 
  ** must be in the write-op queue anyway, so we can omit reading from the
  ** file-system.
  */
  pBase = ((AsyncFile *)id)->pBaseRead;
................................................................................
            s = MIN(s, p->nByte);
            break;
        }
      }
    }
    *pSize = s;
  }
  sqlite3Os.xLeaveMutex();
  return rc;
}

/*
** Return the operating system file handle. This is only used for debugging 
** at the moment anyway.
*/
................................................................................
** in the file system. 
**
** This method holds the mutex from start to finish.
*/
static int asyncFileExists(const char *z){
  int ret;
  AsyncWrite *p;
  sqlite3Os.xEnterMutex();

  /* See if the real file system contains the specified file.  */
  ret = xOrigFileExists(z);
  
  for(p=sqlite3_asyncListFirst; p; p = p->pNext){
    if( p->op==ASYNC_DELETE && 0==strcmp(p->zBuf, z) ){
      ret = 0;
    }else if( p->op==ASYNC_OPENEXCLUSIVE && 0==strcmp(p->zBuf, z) ){
      ret = 1;
    }
  }

  sqlite3Os.xLeaveMutex();
  return ret;
}

/*
** The following routine is one of two exported symbols in this module (along
** with sqlite3_async_flush(), see below). This routine should be called
** once to enable the asynchronous IO features implemented in this file. If 
** the features are successfully enabled (or if they have already been 
** enabled) then SQLITE_OK is returned. Otherwise, SQLITE_MISUSE.
*/
int sqlite3_async_enable(void){
  if( xOrigOpenReadWrite==0 ){
    xOrigOpenReadWrite = sqlite3Os.xOpenReadWrite;
    xOrigOpenReadOnly = sqlite3Os.xOpenReadOnly;
    xOrigOpenExclusive = sqlite3Os.xOpenExclusive;
    xOrigDelete = sqlite3Os.xDelete;
    xOrigFileExists = sqlite3Os.xFileExists;
    xOrigSyncDirectory = sqlite3Os.xSyncDirectory;

    sqlite3Os.xOpenReadWrite = asyncOpenReadWrite;
    sqlite3Os.xOpenReadOnly = asyncOpenReadOnly;
    sqlite3Os.xOpenExclusive = asyncOpenExclusive;
    sqlite3Os.xDelete = asyncDelete;
    sqlite3Os.xFileExists = asyncFileExists;
    sqlite3Os.xSyncDirectory = asyncSyncDirectory;









  }
  return SQLITE_OK;
}

/* 
** This function is called externally to perform queued write and sync
** operations. It returns when an IO error occurs or there are no more queued
................................................................................
  int rc = SQLITE_OK;

  /* Grab the mutex and set the sqlite3_asyncIoBusy flag to make sure this
  ** is the only thread performing an sqlite3_async_flush() at this time.
  ** Or, if some other thread is already inside this function, return 
  ** SQLITE_BUSY to the caller.
  */
  sqlite3Os.xEnterMutex();
  if( sqlite3_asyncIoBusy ){
    sqlite3Os.xLeaveMutex();
    return SQLITE_BUSY;
  }
  sqlite3_asyncIoBusy = 1;

  while( (p = sqlite3_asyncListFirst) && rc==SQLITE_OK ){
    int isInsideMutex = 1;

................................................................................
    if( p->pFile ){
      pBase = p->pFile->pBaseWrite;
      if( 
        p->op==ASYNC_CLOSE || 
        p->op==ASYNC_OPENEXCLUSIVE ||
        (pBase && (p->op==ASYNC_SYNC || p->op==ASYNC_WRITE) ) 
      ){
        sqlite3Os.xLeaveMutex();
        isInsideMutex = 0;
      }
      if( !pBase ){
        pBase = p->pFile->pBaseRead;
      }
    }

................................................................................

      case ASYNC_OPENEXCLUSIVE: {
        AsyncFile *pFile = p->pFile;
        int delFlag = ((p->iOffset)?1:0);
        OsFile *pBase = 0;
        rc = xOrigOpenExclusive(p->zBuf, &pBase, delFlag);

        sqlite3Os.xEnterMutex();
        isInsideMutex = 1;
        if( rc==SQLITE_OK ){
          pFile->pBaseRead = pBase;
        }
        break;
      }

................................................................................
    }

    /* If we didn't hang on to the mutex during the IO op, obtain it now
    ** so that the AsyncWrite structure can be safely removed from the 
    ** global write-op queue.
    */
    if( !isInsideMutex ){
      sqlite3Os.xEnterMutex();
    }
    if( rc==SQLITE_OK ){
      removeAsyncWrite(p);
      sqlite3Os.xFree(p);
    }
  }

  /* Clear the io-busy flag and exit the mutex */
  assert( sqlite3_asyncIoBusy );
  sqlite3_asyncIoBusy = 0;
  sqlite3Os.xLeaveMutex();

  return rc;
}

/*
** The following code defines a Tcl interface for testing the asynchronous 
** IO implementation in this file.
................................................................................
int Sqlitetestasync_Init(Tcl_Interp *interp){
  Tcl_CreateObjCommand(interp,"sqlite3_async_enable",testAsyncEnable,0,0);
  Tcl_CreateObjCommand(interp,"sqlite3_async_flush",testAsyncFlush,0,0);
  return TCL_OK;
}

#endif

# 2005 December 29
#
# 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 file implements regression tests for SQLite library.
#
# This file implements tests to verify that the new serial_type
# values of 8 (integer 0) and 9 (integer 1) work correctly.
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl

do_test format4-1.1 {
  execsql {
    CREATE TABLE t1(x0,x1,x2,x3,x4,x5,x6,x7,x8,x9);
    INSERT INTO t1 VALUES(0,0,0,0,0,0,0,0,0,0);
    INSERT INTO t1 SELECT * FROM t1;
    INSERT INTO t1 SELECT * FROM t1;
    INSERT INTO t1 SELECT * FROM t1;
    INSERT INTO t1 SELECT * FROM t1;
    INSERT INTO t1 SELECT * FROM t1;
    INSERT INTO t1 SELECT * FROM t1;
  }
  file size test.db
} {2048}
do_test format4-1.2 {
  execsql {
    UPDATE t1 SET x0=1, x1=1, x2=1, x3=1, x4=1, x5=1, x6=1, x7=1, x8=1, x9=1
  }
  file size test.db
} {2048}
do_test format4-1.3 {
  execsql {
    UPDATE t1 SET x0=2, x1=2, x2=2, x3=2, x4=2, x5=2, x6=2, x7=2, x8=2, x9=2
  }
  file size test.db
} {4096}


finish_test