SQLite

  sqlite3_config(SQLITE_CONFIG_MALLOC, &defaultMethods);
}

/*
** Set the "type" of an allocation.
*/
void sqlite3MemdebugSetType(void *p, u8 eType){
  if( p && sqlite3GlobalConfig.m.xMalloc==sqlite3MemMalloc ){
    struct MemBlockHdr *pHdr;
    pHdr = sqlite3MemsysGetHeader(p);
    assert( pHdr->iForeGuard==FOREGUARD );
    pHdr->eType = eType;
  }
}

/*
** Return TRUE if the mask of type in eType matches the type of the
** allocation p.  Also return true if p==NULL.
**
** This routine is designed for use within an assert() statement, to
** verify the type of an allocation.  For example:
**
**     assert( sqlite3MemdebugHasType(p, MEMTYPE_DB) );
*/
int sqlite3MemdebugHasType(void *p, u8 eType){
  int rc = 1;
  if( p && sqlite3GlobalConfig.m.xMalloc==sqlite3MemMalloc ){
    struct MemBlockHdr *pHdr;
    pHdr = sqlite3MemsysGetHeader(p);
    assert( pHdr->iForeGuard==FOREGUARD );         /* Allocation is valid */
    if( (pHdr->eType&eType)==0 ){
      rc = 0;
    }
  }

** This routine is designed for use within an assert() statement, to
** verify the type of an allocation.  For example:
**
**     assert( sqlite3MemdebugNoType(p, MEMTYPE_DB) );
*/
int sqlite3MemdebugNoType(void *p, u8 eType){
  int rc = 1;
  if( p && sqlite3GlobalConfig.m.xMalloc==sqlite3MemMalloc ){
    struct MemBlockHdr *pHdr;
    pHdr = sqlite3MemsysGetHeader(p);
    assert( pHdr->iForeGuard==FOREGUARD );         /* Allocation is valid */
    if( (pHdr->eType&eType)!=0 ){
      rc = 0;
    }
  }

    sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
    iSize = sqlite3MallocSize(p);
    sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_OVERFLOW, -iSize);
    sqlite3_free(p);
  }
}

#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
/*
** Return the size of a pache allocation
*/
static int pcache1MemSize(void *p){
  assert( sqlite3_mutex_held(pcache1.mutex) );
  if( p>=pcache1.pStart && p<pcache1.pEnd ){
    return pcache1.szSlot;
  }else{
    int iSize;
    assert( sqlite3MemdebugHasType(p, MEMTYPE_PCACHE) );
    sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
    iSize = sqlite3MallocSize(p);
    sqlite3MemdebugSetType(p, MEMTYPE_PCACHE);
    return iSize;
  }
}
#endif /* SQLITE_ENABLE_MEMORY_MANAGEMENT */

/*
** Allocate a new page object initially associated with cache pCache.
*/
static PgHdr1 *pcache1AllocPage(PCache1 *pCache){
  int nByte = sizeof(PgHdr1) + pCache->szPage;
  void *pPg = pcache1Alloc(nByte);
  PgHdr1 *p;

*/
int sqlite3PcacheReleaseMemory(int nReq){
  int nFree = 0;
  if( pcache1.pStart==0 ){
    PgHdr1 *p;
    pcache1EnterMutex();
    while( (nReq<0 || nFree<nReq) && (p=pcache1.pLruTail) ){
      nFree += pcache1MemSize(PGHDR1_TO_PAGE(p));
      pcache1PinPage(p);
      pcache1RemoveFromHash(p);
      pcache1FreePage(p);
    }
    pcache1LeaveMutex();
  }
  return nFree;

**
** This Tcl module contains only a single new Tcl command named "sqlite".
** (Hence there is no namespace.  There is no point in using a namespace
** if the extension only supplies one new name!)  The "sqlite" command is
** used to open a new SQLite database.  See the DbMain() routine above
** for additional information.
*/
int Sqlite3_Init(Tcl_Interp *interp){
  Tcl_InitStubs(interp, "8.4", 0);
  Tcl_CreateObjCommand(interp, "sqlite3", (Tcl_ObjCmdProc*)DbMain, 0, 0);
  Tcl_PkgProvide(interp, "sqlite3", PACKAGE_VERSION);
  Tcl_CreateObjCommand(interp, "sqlite", (Tcl_ObjCmdProc*)DbMain, 0, 0);
  Tcl_PkgProvide(interp, "sqlite", PACKAGE_VERSION);
  return TCL_OK;
}
int Tclsqlite3_Init(Tcl_Interp *interp){ return Sqlite3_Init(interp); }
int Sqlite3_SafeInit(Tcl_Interp *interp){ return TCL_OK; }
int Tclsqlite3_SafeInit(Tcl_Interp *interp){ return TCL_OK; }
int Sqlite3_Unload(Tcl_Interp *interp, int flags){ return TCL_OK; }
int Tclsqlite3_Unload(Tcl_Interp *interp, int flags){ return TCL_OK; }
int Sqlite3_SafeUnload(Tcl_Interp *interp, int flags){ return TCL_OK; }
int Tclsqlite3_SafeUnload(Tcl_Interp *interp, int flags){ return TCL_OK;}


#ifndef SQLITE_3_SUFFIX_ONLY
int Sqlite_Init(Tcl_Interp *interp){ return Sqlite3_Init(interp); }
int Tclsqlite_Init(Tcl_Interp *interp){ return Sqlite3_Init(interp); }
int Sqlite_SafeInit(Tcl_Interp *interp){ return TCL_OK; }
int Tclsqlite_SafeInit(Tcl_Interp *interp){ return TCL_OK; }
int Sqlite_Unload(Tcl_Interp *interp, int flags){ return TCL_OK; }
int Tclsqlite_Unload(Tcl_Interp *interp, int flags){ return TCL_OK; }
int Sqlite_SafeUnload(Tcl_Interp *interp, int flags){ return TCL_OK; }
int Tclsqlite_SafeUnload(Tcl_Interp *interp, int flags){ return TCL_OK;}
#endif

#ifdef TCLSH
/*****************************************************************************
** All of the code that follows is used to build standalone TCL interpreters
** that are statically linked with SQLite.  Enable these by compiling
** with -DTCLSH=n where n can be 1 or 2.  An n of 1 generates a standard

db close

# Search for binaries to test against. Any executable files that match
# our naming convention are assumed to be testfixture binaries to test
# against.
#
set binaries [list]
set pattern "[file tail [info nameofexec]]?*"
if {$tcl_platform(platform)=="windows"} {
  set pattern [string map {\.exe {}} $pattern]
}
foreach file [glob -nocomplain $pattern] {
  if {[file executable $file] && } {lappend binaries $file}
}
if {[llength $binaries]==0} {
  puts "WARNING: No historical binaries to test against."
  puts "WARNING: No backwards-compatibility tests have been run."
  finish_test
  return
}
proc get_version {binary} {
  set chan [launch_testfixture $binary]
  set v [testfixture $chan { sqlite3 -version }]
  close $chan
  set v
}
foreach bin $binaries {
  puts -nonewline "Testing against $bin - "
  flush stdout
  puts "version [get_version $bin]"
}

proc do_backcompat_test {rv bin1 bin2 script} {

  file delete -force test.db

  if {$bin1 != ""} { set ::bc_chan1 [launch_testfixture $bin1] }

proc do_allbackcompat_test {script} {

  foreach bin $::binaries {
    set nErr [set_test_counter errors]
    foreach dir {0 1} {

      set bintag [string map {testfixture {}} $bin]
      set bintag [string map {\.exe {}} $bintag]
      if {$bintag == ""} {set bintag self}
      set ::bcname ".$bintag.$dir."

      rename do_test _do_test
      proc do_test {nm sql res} {
        set nm [regsub {\.} $nm $::bcname]
        uplevel [list _do_test $nm $sql $res]

  do_test backcompat-1.2.3 { sql1 {
    BEGIN;
      UPDATE t1 SET a = randomblob(500);
  } } {}
  set data [read_file_system]




  do_test backcompat-1.2.4 { sql1 { COMMIT } } {}

  set same [expr {[sql2 {SELECT md5sum(a), md5sum(b) FROM t1}] == $cksum2}]
  do_test backcompat-1.2.5 [list set {} $same] 0

  code1 { db close }
  code2 { db close }