?? pgm13_02.cpp
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//// 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);}
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