// Filename: pallocator.h
// Created by:  drose (05Jun01)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) 2001, Disney Enterprises, Inc.  All rights reserved
//
// All use of this software is subject to the terms of the Panda 3d
// Software license.  You should have received a copy of this license
// along with this source code; you will also find a current copy of
// the license at http://www.panda3d.org/license.txt .
//
// To contact the maintainers of this program write to
// panda3d@yahoogroups.com .
//
////////////////////////////////////////////////////////////////////

#ifndef PALLOCATOR_H
#define PALLOCATOR_H

#include <memory>
#include "dtoolbase.h"


////////////////////////////////////////////////////////////////////
//       Class : pallocator
// Description : This is our own Panda specialization on the default
//               STL allocator.  Its main purpose is to call the hooks
//               for MemoryUsage to properly track STL-allocated
//               memory.
//
//               pvector, pmap, etc. are all defined in this directory
//               to use a pallocator.
////////////////////////////////////////////////////////////////////

#if defined(UNKNOWN_ALLOCATOR)
#define pallocator allocator

#elif defined(OLD_STYLE_ALLOCATOR)
// Early versions of gcc wanted to use its own kind of allocator,
// somewhat different from the STL standard.  Irix uses this one too.
// It might be inherited from an early draft of the STL standard.

template<class Type>
class pallocator : public alloc {
public:
#ifndef NDEBUG
  INLINE static Type *allocate(size_t n);
  INLINE static void deallocate(void *p, size_t n);
#endif  // NDEBUG
};

#elif defined(GNU_STYLE_ALLOCATOR)
// Later versions of gcc want to use a still different, nonstandard
// definition.  Sheesh.

template<class Type>
class pallocator : public allocator<Type> {
public:
  INLINE pallocator();
  template<class _Tp1>
  INLINE pallocator(const pallocator<_Tp1> &other);

#ifndef NDEBUG
  INLINE Type *allocate(size_t n);
  INLINE void deallocate(void *p, size_t n);
#endif  // NDEBUG

  template <class _Tp1> struct rebind {
    typedef pallocator<_Tp1> other;
  };
};

#else  // *_STYLE_ALLOCATOR

// This is the correct allocator declaration as the current C++
// standard defines it.
template<class Type>
class pallocator : public allocator<Type> {
public:
#ifndef NDEBUG
  INLINE pointer allocate(size_type n, allocator<void>::const_pointer hint = 0);
  INLINE void deallocate(void *p, size_type n);
#endif  // NDEBUG
};
#endif  // *_STYLE_ALLOCATOR

#if !defined(UNKNOWN_ALLOCATOR)
#include "pallocator.T"
#endif

#endif