--- a/engine/sqlite/src/mem1.cpp	Wed May 26 10:44:32 2010 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,232 +0,0 @@
-/*
-** 2007 August 14
-**
-** 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 contains the C functions that implement a memory
-** allocation subsystem for use by SQLite.  
-**
-** $Id: mem1.cpp 1282 2008-11-13 09:31:33Z LarsPson $
-*/
-
-/*
-** This version of the memory allocator is the default.  It is
-** used when no other memory allocator is specified using compile-time
-** macros.
-*/
-#if !defined(SQLITE_MEMDEBUG) && !defined(SQLITE_MEMORY_SIZE) \
-     && !defined(SQLITE_MMAP_HEAP_SIZE)
-
-/*
-** We will eventually construct multiple memory allocation subsystems
-** suitable for use in various contexts:
-**
-**    *  Normal multi-threaded builds
-**    *  Normal single-threaded builds
-**    *  Debugging builds
-**
-** This initial version is suitable for use in normal multi-threaded
-** builds.  We envision that alternative versions will be stored in
-** separate source files.  #ifdefs will be used to select the code from
-** one of the various memN.c source files for use in any given build.
-*/
-#include "sqliteInt.h"
-
-/*
-** All of the static variables used by this module are collected
-** into a single structure named "mem".  This is to keep the
-** static variables organized and to reduce namespace pollution
-** when this module is combined with other in the amalgamation.
-*/
-static struct {
-  /*
-  ** The alarm callback and its arguments.  The mem.mutex lock will
-  ** be held while the callback is running.  Recursive calls into
-  ** the memory subsystem are allowed, but no new callbacks will be
-  ** issued.  The alarmBusy variable is set to prevent recursive
-  ** callbacks.
-  */
-  sqlite3_int64 alarmThreshold;
-  void (*alarmCallback)(void*, sqlite3_int64,int);
-  void *alarmArg;
-  int alarmBusy;
-  
-  /*
-  ** Mutex to control access to the memory allocation subsystem.
-  */
-  sqlite3_mutex *mutex;
-  
-  /*
-  ** Current allocation and high-water mark.
-  */
-  sqlite3_int64 nowUsed;
-  sqlite3_int64 mxUsed;
-  
- 
-} mem;
-
-/*
-** Enter the mutex mem.mutex. Allocate it if it is not already allocated.
-*/
-static void enterMem(void){
-  if( mem.mutex==0 ){
-    mem.mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_MEM);
-  }
-  sqlite3_mutex_enter(mem.mutex);
-}
-
-/*
-** Return the amount of memory currently checked out.
-*/
-EXPORT_C sqlite3_int64 sqlite3_memory_used(void){
-  sqlite3_int64 n;
-  enterMem();
-  n = mem.nowUsed;
-  sqlite3_mutex_leave(mem.mutex);  
-  return n;
-}
-
-/*
-** Return the maximum amount of memory that has ever been
-** checked out since either the beginning of this process
-** or since the most recent reset.
-*/
-EXPORT_C sqlite3_int64 sqlite3_memory_highwater(int resetFlag){
-  sqlite3_int64 n;
-  enterMem();
-  n = mem.mxUsed;
-  if( resetFlag ){
-    mem.mxUsed = mem.nowUsed;
-  }
-  sqlite3_mutex_leave(mem.mutex);  
-  return n;
-}
-
-/*
-** Change the alarm callback
-*/
-EXPORT_C int sqlite3_memory_alarm(
-  void(*xCallback)(void *pArg, sqlite3_int64 used,int N),
-  void *pArg,
-  sqlite3_int64 iThreshold
-){
-  enterMem();
-  mem.alarmCallback = xCallback;
-  mem.alarmArg = pArg;
-  mem.alarmThreshold = iThreshold;
-  sqlite3_mutex_leave(mem.mutex);
-  return SQLITE_OK;
-}
-
-/*
-** Trigger the alarm 
-*/
-static void sqlite3MemsysAlarm(int nByte){
-  void (*xCallback)(void*,sqlite3_int64,int);
-  sqlite3_int64 nowUsed;
-  void *pArg;
-  if( mem.alarmCallback==0 || mem.alarmBusy  ) return;
-  mem.alarmBusy = 1;
-  xCallback = mem.alarmCallback;
-  nowUsed = mem.nowUsed;
-  pArg = mem.alarmArg;
-  sqlite3_mutex_leave(mem.mutex);
-  xCallback(pArg, nowUsed, nByte);
-  sqlite3_mutex_enter(mem.mutex);
-  mem.alarmBusy = 0;
-}
-
-/*
-** Allocate nBytes of memory
-*/
-EXPORT_C void *sqlite3_malloc(int nBytes){
-  sqlite3_int64 *p = 0;
-  if( nBytes>0 ){
-    enterMem();
-    if( mem.alarmCallback!=0 && mem.nowUsed+nBytes>=mem.alarmThreshold ){
-      sqlite3MemsysAlarm(nBytes);
-    }
-	p = (sqlite3_int64*)malloc(nBytes+8);
-    if( p==0 ){
-      sqlite3MemsysAlarm(nBytes);
-	  p = (sqlite3_int64*)malloc(nBytes+8);
-    }
-    if( p ){
-      p[0] = nBytes;
-      p++;
-      mem.nowUsed += nBytes;
-      if( mem.nowUsed>mem.mxUsed ){
-        mem.mxUsed = mem.nowUsed;
-      }
-    }
-    sqlite3_mutex_leave(mem.mutex);
-  }
-  return (void*)p; 
-}
-
-/*
-** Free memory.
-*/
-EXPORT_C void sqlite3_free(void *pPrior){
-  sqlite3_int64 *p;
-  int nByte;
-  if( pPrior==0 ){
-    return;
-  }
-  assert( mem.mutex!=0 );
-  p = (sqlite3_int64*)pPrior;
-  p--;
-  nByte = (int)*p;
-  sqlite3_mutex_enter(mem.mutex);
-  mem.nowUsed -= nByte;
-  free(p);
-  sqlite3_mutex_leave(mem.mutex);  
-}
-
-/*
-** Change the size of an existing memory allocation
-*/
-EXPORT_C void *sqlite3_realloc(void *pPrior, int nBytes){
-  int nOld;
-  sqlite3_int64 *p;
-  if( pPrior==0 ){
-    return sqlite3_malloc(nBytes);
-  }
-  if( nBytes<=0 ){
-    sqlite3_free(pPrior);
-    return 0;
-  }
-  p = (sqlite3_int64*)pPrior;
-  p--;
-  nOld = (int)p[0];
-  assert( mem.mutex!=0 );
-  sqlite3_mutex_enter(mem.mutex);
-  if( mem.nowUsed+nBytes-nOld>=mem.alarmThreshold ){
-    sqlite3MemsysAlarm(nBytes-nOld);
-  }
-  p = (sqlite3_int64*)realloc(p, nBytes+8);
-  if( p==0 ){
-    sqlite3MemsysAlarm(nBytes);
-	p = (sqlite3_int64*)pPrior;
-    p--;
-	p = (sqlite3_int64*)realloc(p, nBytes+8);
-  }
-  if( p ){
-    p[0] = nBytes;
-    p++;
-    mem.nowUsed += nBytes-nOld;
-    if( mem.nowUsed>mem.mxUsed ){
-      mem.mxUsed = mem.nowUsed;
-    }
-  }
-  sqlite3_mutex_leave(mem.mutex);
-  return (void*)p;
-}
-
-#endif /* !SQLITE_MEMDEBUG && !SQLITE_OMIT_MEMORY_ALLOCATION */