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