////   This file contains the C++ code from Program 13.2 of//   "Data Structures and Algorithms//    with Object-Oriented Design Patterns in C++"//   by Bruno R. Preiss.////   Copyright (c) 1998 by Bruno R. Preiss, P.Eng.  All rights reserved.////   http://www.pads.uwaterloo.ca/Bruno.Preiss/books/opus4/programs/pgm13_02.cpp//struct Tag{    StoragePool* pool;};void* operator new (size_t bytes, StoragePool& p){    Tag* const tag = reinterpret_cast<Tag*> (	p.Acquire (bytes + sizeof (Tag)));    tag->pool = &p;    return tag + 1;}void* operator new (size_t bytes){    Tag* const tag = reinterpret_cast<Tag*> (	std::malloc (bytes + sizeof (Tag));    tag->pool = 0;    return tag + 1;}void operator delete (void* arg){    Tag* const tag = reinterpret_cast<Tag*> (arg) - 1U;    if (tag->pool)	tag->pool->Release (tag);    else	std::free (tag);}