1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
#include <boost/config.hpp>
// shared_ptr_alloc2_test.cpp
//
// Copyright (c) 2005 Peter Dimov
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#include <boost/detail/lightweight_test.hpp>
#include <boost/shared_ptr.hpp>
#include <memory>
#include <cstddef>
// test_allocator
struct test_allocator_base
{
int id_;
static int last_global_id_;
static int count_;
explicit test_allocator_base( int id ): id_( id )
{
}
};
int test_allocator_base::last_global_id_ = 0;
int test_allocator_base::count_ = 0;
template<class T> class test_allocator: public test_allocator_base
{
public:
typedef T * pointer;
typedef T const * const_pointer;
typedef T & reference;
typedef T const & const_reference;
typedef T value_type;
typedef std::size_t size_type;
typedef std::ptrdiff_t difference_type;
private:
static T * last_pointer_;
static std::size_t last_n_;
static int last_id_;
public:
template<class U> struct rebind
{
typedef test_allocator<U> other;
};
pointer address( reference r ) const
{
return &r;
}
const_pointer address( const_reference s ) const
{
return &s;
}
explicit test_allocator( int id = 0 ): test_allocator_base( id )
{
}
template<class U> test_allocator( test_allocator<U> const & r ): test_allocator_base( r )
{
}
template<class U> test_allocator & operator=( test_allocator<U> const & r )
{
test_allocator_base::operator=( r );
return *this;
}
void deallocate( pointer p, size_type n )
{
BOOST_TEST( p == last_pointer_ );
BOOST_TEST( n == last_n_ );
BOOST_TEST( id_ == last_id_ );
--count_;
::operator delete( p );
}
pointer allocate( size_type n, void const * )
{
T * p = static_cast< T* >( ::operator new( n * sizeof( T ) ) );
last_pointer_ = p;
last_n_ = n;
last_id_ = id_;
last_global_id_ = id_;
++count_;
return p;
}
void construct( pointer p, T const & t )
{
new( p ) T( t );
}
void destroy( pointer p )
{
p->~T();
}
size_type max_size() const
{
return size_type( -1 ) / sizeof( T );
}
};
template<class T> T * test_allocator<T>::last_pointer_ = 0;
template<class T> std::size_t test_allocator<T>::last_n_ = 0;
template<class T> int test_allocator<T>::last_id_ = 0;
template<class T, class U> inline bool operator==( test_allocator<T> const & a1, test_allocator<U> const & a2 )
{
return a1.id_ == a2.id_;
}
template<class T, class U> inline bool operator!=( test_allocator<T> const & a1, test_allocator<U> const & a2 )
{
return a1.id_ != a2.id_;
}
template<> class test_allocator<void>: public test_allocator_base
{
public:
typedef void * pointer;
typedef void const * const_pointer;
typedef void value_type;
template<class U> struct rebind
{
typedef test_allocator<U> other;
};
explicit test_allocator( int id = 0 ): test_allocator_base( id )
{
}
template<class U> test_allocator( test_allocator<U> const & r ): test_allocator_base( r )
{
}
template<class U> test_allocator & operator=( test_allocator<U> const & r )
{
test_allocator_base::operator=( r );
return *this;
}
};
//
struct X
{
static int instances;
X()
{
++instances;
}
~X()
{
--instances;
}
private:
X( X const & );
X & operator=( X const & );
};
int X::instances = 0;
int main()
{
BOOST_TEST( X::instances == 0 );
boost::shared_ptr<void> pv( new X, boost::checked_deleter<X>(), std::allocator<X>() );
BOOST_TEST( X::instances == 1 );
pv.reset( new X, boost::checked_deleter<X>(), test_allocator<float>( 42 ) );
BOOST_TEST( X::instances == 1 );
BOOST_TEST( test_allocator_base::last_global_id_ == 42 );
BOOST_TEST( test_allocator_base::count_ > 0 );
pv.reset();
BOOST_TEST( X::instances == 0 );
BOOST_TEST( test_allocator_base::count_ == 0 );
pv.reset( new X, boost::checked_deleter<X>(), test_allocator<void>( 43 ) );
BOOST_TEST( X::instances == 1 );
BOOST_TEST( test_allocator_base::last_global_id_ == 43 );
pv.reset( new X, boost::checked_deleter<X>(), std::allocator<void>() );
BOOST_TEST( X::instances == 1 );
pv.reset();
BOOST_TEST( X::instances == 0 );
return boost::report_errors();
}
|
