2003-01-14 05:56:56 +01:00
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// -*- C++ -*-
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2002-11-26 01:53:12 +01:00
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// Testing allocator for the C++ library testsuite.
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//
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2003-01-14 05:56:56 +01:00
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// Copyright (C) 2002, 2003 Free Software Foundation, Inc.
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2002-11-26 01:53:12 +01:00
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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//
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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// This file provides an test instrumentation allocator that can be
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// used to verify allocation functionality of standard library
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// containers. 2002.11.25 smw
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2003-07-05 06:05:45 +02:00
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#ifndef _GLIBCXX_TESTSUITE_ALLOCATOR_H
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#define _GLIBCXX_TESTSUITE_ALLOCATOR_H
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2002-11-26 01:53:12 +01:00
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#include <cstddef>
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#include <limits>
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2003-01-14 05:56:56 +01:00
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namespace __gnu_cxx_test
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{
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class allocation_tracker
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{
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public:
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typedef std::size_t size_type;
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static void*
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allocate(size_type blocksize)
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{
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allocationTotal_ += blocksize;
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return ::operator new(blocksize);
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}
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static void
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construct() { constructCount_++; }
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static void
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destroy() { destructCount_++; }
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static void
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deallocate(void* p, size_type blocksize)
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{
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::operator delete(p);
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deallocationTotal_ += blocksize;
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}
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static size_type
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allocationTotal() { return allocationTotal_; }
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static size_type
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deallocationTotal() { return deallocationTotal_; }
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static int
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constructCount() { return constructCount_; }
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static int
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destructCount() { return destructCount_; }
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static void
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resetCounts()
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{
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allocationTotal_ = 0;
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deallocationTotal_ = 0;
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constructCount_ = 0;
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destructCount_ = 0;
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}
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private:
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static size_type allocationTotal_;
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static size_type deallocationTotal_;
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static int constructCount_;
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static int destructCount_;
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};
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// A simple basic allocator that just forwards to the
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// allocation_tracker to fulfill memory requests. This class is
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// templated on the target object type, but tracker isn't.
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template<class T>
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class tracker_alloc
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{
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public:
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typedef T value_type;
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typedef T* pointer;
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typedef const T* const_pointer;
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typedef T& reference;
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typedef const T& const_reference;
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typedef std::size_t size_type;
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typedef std::ptrdiff_t difference_type;
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template<class U> struct rebind { typedef tracker_alloc<U> other; };
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pointer
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address(reference value) const
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{ return &value; }
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const_pointer
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address(const_reference value) const
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{ return &value; }
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tracker_alloc() throw()
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{ }
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tracker_alloc(const tracker_alloc&) throw()
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{ }
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template<class U>
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tracker_alloc(const tracker_alloc<U>&) throw()
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{ }
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~tracker_alloc() throw()
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{ }
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size_type
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max_size() const throw()
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{ return std::numeric_limits<std::size_t>::max() / sizeof(T); }
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pointer
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allocate(size_type n, const void* = 0)
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{
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return static_cast<pointer>(allocation_tracker::allocate(n * sizeof(T)));
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}
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void
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construct(pointer p, const T& value)
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{
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new (p) T(value);
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allocation_tracker::construct();
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}
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void
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destroy(pointer p)
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{
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p->~T();
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allocation_tracker::destroy();
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}
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void
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deallocate(pointer p, size_type num)
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{ allocation_tracker::deallocate(p, num * sizeof(T)); }
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};
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2003-01-14 05:56:56 +01:00
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template<class T1, class T2>
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bool
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operator==(const tracker_alloc<T1>&, const tracker_alloc<T2>&) throw()
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{ return true; }
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template<class T1, class T2>
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bool
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operator!=(const tracker_alloc<T1>&, const tracker_alloc<T2>&) throw()
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{ return false; }
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}; // namespace __gnu_cxx_test
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2002-11-26 01:53:12 +01:00
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2003-07-05 06:05:45 +02:00
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#endif // _GLIBCXX_TESTSUITE_ALLOCATOR_H
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2002-11-26 01:53:12 +01:00
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