2 // Testing allocator for the C++ library testsuite.
4 // Copyright (C) 2002, 2003 Free Software Foundation, Inc.
6 // This file is part of the GNU ISO C++ Library. This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 2, or (at your option)
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License along
18 // with this library; see the file COPYING. If not, write to the Free
19 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
22 // As a special exception, you may use this file as part of a free software
23 // library without restriction. Specifically, if other files instantiate
24 // templates or use macros or inline functions from this file, or you compile
25 // this file and link it with other files to produce an executable, this
26 // file does not by itself cause the resulting executable to be covered by
27 // the GNU General Public License. This exception does not however
28 // invalidate any other reasons why the executable file might be covered by
29 // the GNU General Public License.
31 // This file provides an test instrumentation allocator that can be
32 // used to verify allocation functionality of standard library
33 // containers. 2002.11.25 smw
35 #ifndef _GLIBCXX_TESTSUITE_ALLOCATOR_H
36 #define _GLIBCXX_TESTSUITE_ALLOCATOR_H
43 class allocation_tracker
46 typedef std::size_t size_type;
49 allocate(size_type blocksize)
51 allocationTotal_ += blocksize;
52 return ::operator new(blocksize);
56 construct() { constructCount_++; }
59 destroy() { destructCount_++; }
62 deallocate(void* p, size_type blocksize)
65 deallocationTotal_ += blocksize;
69 allocationTotal() { return allocationTotal_; }
72 deallocationTotal() { return deallocationTotal_; }
75 constructCount() { return constructCount_; }
78 destructCount() { return destructCount_; }
84 deallocationTotal_ = 0;
90 static size_type allocationTotal_;
91 static size_type deallocationTotal_;
92 static int constructCount_;
93 static int destructCount_;
96 // A simple basic allocator that just forwards to the
97 // allocation_tracker to fulfill memory requests. This class is
98 // templated on the target object type, but tracker isn't.
103 typedef T value_type;
105 typedef const T* const_pointer;
106 typedef T& reference;
107 typedef const T& const_reference;
108 typedef std::size_t size_type;
109 typedef std::ptrdiff_t difference_type;
111 template<class U> struct rebind { typedef tracker_alloc<U> other; };
114 address(reference value) const
118 address(const_reference value) const
121 tracker_alloc() throw()
124 tracker_alloc(const tracker_alloc&) throw()
128 tracker_alloc(const tracker_alloc<U>&) throw()
131 ~tracker_alloc() throw()
135 max_size() const throw()
136 { return std::numeric_limits<std::size_t>::max() / sizeof(T); }
139 allocate(size_type n, const void* = 0)
141 return static_cast<pointer>(allocation_tracker::allocate(n * sizeof(T)));
145 construct(pointer p, const T& value)
148 allocation_tracker::construct();
155 allocation_tracker::destroy();
159 deallocate(pointer p, size_type num)
160 { allocation_tracker::deallocate(p, num * sizeof(T)); }
163 template<class T1, class T2>
165 operator==(const tracker_alloc<T1>&, const tracker_alloc<T2>&) throw()
168 template<class T1, class T2>
170 operator!=(const tracker_alloc<T1>&, const tracker_alloc<T2>&) throw()
172 }; // namespace __gnu_test
174 #endif // _GLIBCXX_TESTSUITE_ALLOCATOR_H