blob: 2e83a361fb7412820e459fbedde9a77d266010f2 (
plain)
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
|
//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2013-2013. 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)
//
// See http://www.boost.org/libs/container for documentation.
//
//////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_CONTAINER_TEST_DEFAULT_INIT_TEST_HEADER
#define BOOST_CONTAINER_TEST_DEFAULT_INIT_TEST_HEADER
#include <boost/container/detail/config_begin.hpp>
#include <cstddef>
namespace boost{
namespace container {
namespace test{
//
template<int Dummy = 0>
class default_init_allocator_base
{
protected:
static unsigned char s_pattern;
static bool s_ascending;
public:
static void reset_pattern(unsigned char value)
{ s_pattern = value; }
static void set_ascending(bool enable)
{ s_ascending = enable; }
};
template<int Dummy>
unsigned char default_init_allocator_base<Dummy>::s_pattern = 0u;
template<int Dummy>
bool default_init_allocator_base<Dummy>::s_ascending = true;
template<class Integral>
class default_init_allocator
: public default_init_allocator_base<0>
{
typedef default_init_allocator_base<0> base_t;
public:
typedef Integral value_type;
default_init_allocator()
{}
template <class U>
default_init_allocator(default_init_allocator<U>)
{}
Integral* allocate(std::size_t n)
{
//Initialize memory to a pattern
const std::size_t max = sizeof(Integral)*n;
unsigned char *puc_raw = ::new unsigned char[max];
if(base_t::s_ascending){
for(std::size_t i = 0; i != max; ++i){
puc_raw[i] = static_cast<unsigned char>(s_pattern++);
}
}
else{
for(std::size_t i = 0; i != max; ++i){
puc_raw[i] = static_cast<unsigned char>(s_pattern--);
}
}
return (Integral*)puc_raw;;
}
void deallocate(Integral *p, std::size_t)
{ delete[] (unsigned char*)p; }
};
template<class Integral>
inline bool check_ascending_byte_pattern(const Integral&t)
{
const unsigned char *pch = &reinterpret_cast<const unsigned char &>(t);
const std::size_t max = sizeof(Integral);
for(std::size_t i = 1; i != max; ++i){
if( (pch[i-1] != ((unsigned char)(pch[i]-1u))) ){
return false;
}
}
return true;
}
template<class Integral>
inline bool check_descending_byte_pattern(const Integral&t)
{
const unsigned char *pch = &reinterpret_cast<const unsigned char &>(t);
const std::size_t max = sizeof(Integral);
for(std::size_t i = 1; i != max; ++i){
if( (pch[i-1] != ((unsigned char)(pch[i]+1u))) ){
return false;
}
}
return true;
}
template<class IntDefaultInitAllocVector>
bool default_init_test()//Test for default initialization
{
const std::size_t Capacity = 100;
{
test::default_init_allocator<int>::reset_pattern(0);
test::default_init_allocator<int>::set_ascending(true);
IntDefaultInitAllocVector v(Capacity, default_init);
typename IntDefaultInitAllocVector::iterator it = v.begin();
//Compare with the pattern
for(std::size_t i = 0; i != Capacity; ++i, ++it){
if(!test::check_ascending_byte_pattern(*it))
return false;
}
}
{
test::default_init_allocator<int>::reset_pattern(0);
test::default_init_allocator<int>::set_ascending(true);
IntDefaultInitAllocVector v(Capacity, default_init, typename IntDefaultInitAllocVector::allocator_type());
typename IntDefaultInitAllocVector::iterator it = v.begin();
//Compare with the pattern
for(std::size_t i = 0; i != Capacity; ++i, ++it){
if(!test::check_ascending_byte_pattern(*it))
return false;
}
}
{
test::default_init_allocator<int>::reset_pattern(100);
test::default_init_allocator<int>::set_ascending(false);
IntDefaultInitAllocVector v;
v.resize(Capacity, default_init);
typename IntDefaultInitAllocVector::iterator it = v.begin();
//Compare with the pattern
for(std::size_t i = 0; i != Capacity; ++i, ++it){
if(!test::check_descending_byte_pattern(*it))
return false;
}
}
return true;
}
} //namespace test{
} //namespace container {
} //namespace boost{
#include <boost/container/detail/config_end.hpp>
#endif //BOOST_CONTAINER_TEST_DEFAULT_INIT_TEST_HEADER
|
