**    May you share freely, never taking more than you give.
**
*************************************************************************
**
** This file contains the implementation of the sqlite3_unlock_notify()
** API method and its associated functionality.
**
** $Id: notify.c,v 1.2 2009/03/25 16:51:43 drh Exp $
*/
#include "sqliteInt.h"
#include "btreeInt.h"

/* Omit this entire file if SQLITE_ENABLE_UNLOCK_NOTIFY is not defined. */
#ifdef SQLITE_ENABLE_UNLOCK_NOTIFY

................................................................................
  db->pNextBlocked = *pp;
  *pp = db;
}

/*
** Obtain the STATIC_MASTER mutex.
*/
static void enterMutex(){
  sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
  checkListProperties(0);
}

/*
** Release the STATIC_MASTER mutex.
*/
static void leaveMutex(){
  assertMutexHeld();
  checkListProperties(0);
  sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
}

/*
** Register an unlock-notify callback.

**    May you share freely, never taking more than you give.
**
*************************************************************************
**
** This file contains the implementation of the sqlite3_unlock_notify()
** API method and its associated functionality.
**
** $Id: notify.c,v 1.3 2009/04/07 11:21:29 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "btreeInt.h"

/* Omit this entire file if SQLITE_ENABLE_UNLOCK_NOTIFY is not defined. */
#ifdef SQLITE_ENABLE_UNLOCK_NOTIFY

................................................................................
  db->pNextBlocked = *pp;
  *pp = db;
}

/*
** Obtain the STATIC_MASTER mutex.
*/
static void enterMutex(void){
  sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
  checkListProperties(0);
}

/*
** Release the STATIC_MASTER mutex.
*/
static void leaveMutex(void){
  assertMutexHeld();
  checkListProperties(0);
  sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
}

/*
** Register an unlock-notify callback.

**
**    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.
**
*************************************************************************
**
** $Id: test_async.c,v 1.56 2009/03/28 18:56:14 drh Exp $
**
** This file contains an example implementation of an asynchronous IO 
** backend for SQLite.
**
** WHAT IS ASYNCHRONOUS I/O?
**
** With asynchronous I/O, write requests are handled by a separate thread
................................................................................
  ** on the write-op queue for it to do.  So wake it up. */
  pthread_cond_signal(&async.queueSignal);
}

/*
** Increment async.nFile in a thread-safe manner.
*/
static void incrOpenFileCount(){
  /* We must hold the queue mutex in order to modify async.nFile */
  pthread_mutex_lock(&async.queueMutex);
  if( async.nFile==0 ){
    async.ioError = SQLITE_OK;
  }
  async.nFile++;
  pthread_mutex_unlock(&async.queueMutex);

**
**    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.
**
*************************************************************************
**
** $Id: test_async.c,v 1.57 2009/04/07 11:21:29 danielk1977 Exp $
**
** This file contains an example implementation of an asynchronous IO 
** backend for SQLite.
**
** WHAT IS ASYNCHRONOUS I/O?
**
** With asynchronous I/O, write requests are handled by a separate thread
................................................................................
  ** on the write-op queue for it to do.  So wake it up. */
  pthread_cond_signal(&async.queueSignal);
}

/*
** Increment async.nFile in a thread-safe manner.
*/
static void incrOpenFileCount(void){
  /* We must hold the queue mutex in order to modify async.nFile */
  pthread_mutex_lock(&async.queueMutex);
  if( async.nFile==0 ){
    async.ioError = SQLITE_OK;
  }
  async.nFile++;
  pthread_mutex_unlock(&async.queueMutex);

******************************************************************************
**
** This file contains code for a VFS layer that acts as a wrapper around
** an existing VFS. The code in this file attempts to verify that SQLite
** correctly populates and syncs a journal file before writing to a
** corresponding database file.
**
** $Id: test_journal.c,v 1.14 2009/03/28 17:21:52 danielk1977 Exp $
*/
#if SQLITE_TEST          /* This file is used for testing only */

#include "sqlite3.h"
#include "sqliteInt.h"

/*
................................................................................
  sqlite3_vfs_register(&jt_vfs, isDefault);
  return SQLITE_OK;
}

/*
** Uninstall the jt VFS, if it is installed.
*/
void jt_unregister(){
  sqlite3_vfs_unregister(&jt_vfs);
}

#endif

******************************************************************************
**
** This file contains code for a VFS layer that acts as a wrapper around
** an existing VFS. The code in this file attempts to verify that SQLite
** correctly populates and syncs a journal file before writing to a
** corresponding database file.
**
** $Id: test_journal.c,v 1.15 2009/04/07 11:21:29 danielk1977 Exp $
*/
#if SQLITE_TEST          /* This file is used for testing only */

#include "sqlite3.h"
#include "sqliteInt.h"

/*
................................................................................
  sqlite3_vfs_register(&jt_vfs, isDefault);
  return SQLITE_OK;
}

/*
** Uninstall the jt VFS, if it is installed.
*/
void jt_unregister(void){
  sqlite3_vfs_unregister(&jt_vfs);
}

#endif

**    May you share freely, never taking more than you give.
**
*************************************************************************
**
** This file contains code used to implement test interfaces to the
** memory allocation subsystem.
**
** $Id: test_malloc.c,v 1.53 2009/02/04 15:27:40 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "tcl.h"
#include <stdlib.h>
#include <string.h>
#include <assert.h>

................................................................................
  cnt++;
}

/*
** Check to see if a fault should be simulated.  Return true to simulate
** the fault.  Return false if the fault should not be simulated.
*/
static int faultsimStep(){
  if( likely(!memfault.enable) ){
    return 0;
  }
  if( memfault.iCountdown>0 ){
    memfault.iCountdown--;
    return 0;
  }
................................................................................

    pLog->nCall++;
    pLog->nByte += nByte;
  }
}
#endif /* SQLITE_MEMDEBUG */

static void test_memdebug_log_clear(){
  Tcl_HashSearch search;
  Tcl_HashEntry *pEntry;
  for(
    pEntry=Tcl_FirstHashEntry(&aMallocLog, &search);
    pEntry;
    pEntry=Tcl_NextHashEntry(&search)
  ){

**    May you share freely, never taking more than you give.
**
*************************************************************************
**
** This file contains code used to implement test interfaces to the
** memory allocation subsystem.
**
** $Id: test_malloc.c,v 1.54 2009/04/07 11:21:29 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "tcl.h"
#include <stdlib.h>
#include <string.h>
#include <assert.h>

................................................................................
  cnt++;
}

/*
** Check to see if a fault should be simulated.  Return true to simulate
** the fault.  Return false if the fault should not be simulated.
*/
static int faultsimStep(void){
  if( likely(!memfault.enable) ){
    return 0;
  }
  if( memfault.iCountdown>0 ){
    memfault.iCountdown--;
    return 0;
  }
................................................................................

    pLog->nCall++;
    pLog->nByte += nByte;
  }
}
#endif /* SQLITE_MEMDEBUG */

static void test_memdebug_log_clear(void){
  Tcl_HashSearch search;
  Tcl_HashEntry *pEntry;
  for(
    pEntry=Tcl_FirstHashEntry(&aMallocLog, &search);
    pEntry;
    pEntry=Tcl_NextHashEntry(&search)
  ){

**
**    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.
**
*************************************************************************
**
** $Id: test_onefile.c,v 1.11 2009/02/10 18:54:03 danielk1977 Exp $
**
** OVERVIEW:
**
**   This file contains some example code demonstrating how the SQLite 
**   vfs feature can be used to have SQLite operate directly on an 
**   embedded media, without using an intermediate file system.
**
................................................................................
}

/*
** This procedure registers the fs vfs with SQLite. If the argument is
** true, the fs vfs becomes the new default vfs. It is the only publicly
** available function in this file.
*/
int fs_register(){
  if( fs_vfs.pParent ) return SQLITE_OK;
  fs_vfs.pParent = sqlite3_vfs_find(0);
  fs_vfs.base.mxPathname = fs_vfs.pParent->mxPathname;
  fs_vfs.base.szOsFile = MAX(sizeof(tmp_file), sizeof(fs_file));
  return sqlite3_vfs_register(&fs_vfs.base, 0);
}

#ifdef SQLITE_TEST
  int SqlitetestOnefile_Init() {return fs_register();}
#endif

**
**    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.
**
*************************************************************************
**
** $Id: test_onefile.c,v 1.12 2009/04/07 11:21:29 danielk1977 Exp $
**
** OVERVIEW:
**
**   This file contains some example code demonstrating how the SQLite 
**   vfs feature can be used to have SQLite operate directly on an 
**   embedded media, without using an intermediate file system.
**
................................................................................
}

/*
** This procedure registers the fs vfs with SQLite. If the argument is
** true, the fs vfs becomes the new default vfs. It is the only publicly
** available function in this file.
*/
int fs_register(void){
  if( fs_vfs.pParent ) return SQLITE_OK;
  fs_vfs.pParent = sqlite3_vfs_find(0);
  fs_vfs.base.mxPathname = fs_vfs.pParent->mxPathname;
  fs_vfs.base.szOsFile = MAX(sizeof(tmp_file), sizeof(fs_file));
  return sqlite3_vfs_register(&fs_vfs.base, 0);
}

#ifdef SQLITE_TEST
  int SqlitetestOnefile_Init() {return fs_register();}
#endif