File: map_type.h

package info (click to toggle)
libcds 2.3.3-2
  • links: PTS, VCS
  • area: main
  • in suites: bookworm, bullseye
  • size: 15,564 kB
  • sloc: cpp: 135,002; ansic: 7,218; perl: 243; sh: 237; makefile: 6
file content (210 lines) | stat: -rw-r--r-- 5,761 bytes parent folder | download | duplicates (3)
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
// Copyright (c) 2006-2018 Maxim Khizhinsky
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE or copy at http://www.boost.org/LICENSE_1_0.txt)

#ifndef CDSUNIT_MAP_TYPE_H
#define CDSUNIT_MAP_TYPE_H

#include <cds/urcu/general_instant.h>
#include <cds/urcu/general_buffered.h>
#include <cds/urcu/general_threaded.h>
#include <cds/urcu/signal_buffered.h>

#include <cds/sync/spinlock.h>
#include <cds/opt/hash.h>
#include <boost/functional/hash/hash.hpp>

#include <cds_test/stress_test.h>
#include <cds_test/check_size.h>

namespace map {
    namespace cc = cds::container;
    namespace co = cds::opt;

    typedef cds::urcu::gc< cds::urcu::general_instant_stripped >   rcu_gpi;
    typedef cds::urcu::gc< cds::urcu::general_buffered_stripped >  rcu_gpb;
    typedef cds::urcu::gc< cds::urcu::general_threaded_stripped >  rcu_gpt;
#ifdef CDS_URCU_SIGNAL_HANDLING_ENABLED
    typedef cds::urcu::gc< cds::urcu::signal_buffered_stripped >  rcu_shb;
#endif

    template <typename Key>
    struct less;

    template <typename Key>
    struct cmp {
        int operator ()(Key const& k1, Key const& k2) const
        {
            if ( less<Key>( k1, k2 ))
                return -1;
            return less<Key>( k2, k1 ) ? 1 : 0;
        }
    };

    template <typename Key>
    struct hash;

#define CDSUNIT_INT_COMPARE(t)  template <> struct cmp<t> { int operator()( t k1, t k2 ) const { return (int)(k1 - k2); } }
    CDSUNIT_INT_COMPARE(char);
    CDSUNIT_INT_COMPARE(unsigned char);
    CDSUNIT_INT_COMPARE(int);
    CDSUNIT_INT_COMPARE(unsigned int);
    CDSUNIT_INT_COMPARE(long);
    CDSUNIT_INT_COMPARE(unsigned long);
    CDSUNIT_INT_COMPARE(long long);
    CDSUNIT_INT_COMPARE(unsigned long long);
#undef CDSUNIT_INT_COMPARE

#define CDSUNIT_INT_LESS(t)  template <> struct less<t> { bool operator()( t k1, t k2 ) const { return k1 < k2; } }
    CDSUNIT_INT_LESS( char );
    CDSUNIT_INT_LESS( unsigned char );
    CDSUNIT_INT_LESS( int );
    CDSUNIT_INT_LESS( unsigned int );
    CDSUNIT_INT_LESS( long );
    CDSUNIT_INT_LESS( unsigned long );
    CDSUNIT_INT_LESS( long long );
    CDSUNIT_INT_LESS( unsigned long long );
#undef CDSUNIT_INT_LESS

    template <>
    struct cmp<std::string>
    {
        int operator()(std::string const& s1, std::string const& s2)
        {
            return s1.compare( s2 );
        }
        int operator()(std::string const& s1, char const * s2)
        {
            return s1.compare( s2 );
        }
        int operator()(char const * s1, std::string const& s2)
        {
            return -s2.compare( s1 );
        }
    };

    template <>
    struct less<std::string>
    {
        bool operator ()( std::string const& k1, std::string const& k2 ) const
        {
            return cmp<std::string>()(k1, k2) < 0;
        }
        bool operator ()( std::string const& k1, char const* k2 ) const
        {
            return cmp<std::string>()(k1, k2) < 0;
        }
        bool operator ()( char const* k1, std::string const& k2 ) const
        {
            return cmp<std::string>()(k1, k2) < 0;
        }
    };

    template <typename T>
    struct hash
    {
        typedef size_t result_type;
        typedef T      argument_type;

        size_t operator()( T const& k ) const
        {
            return std::hash<size_t>()(k.nKey);
        }

        size_t operator()( size_t k ) const
        {
            return std::hash<size_t>()(k);
        }
    };

    template <>
    struct hash<size_t>
    {
        typedef size_t result_type;
        typedef size_t argument_type;

        size_t operator()( size_t k ) const
        {
            return std::hash<size_t>()(k);
        }
    };

    template <>
    struct hash<std::string>
    {
        typedef size_t result_type;
        typedef std::string argument_type;

        size_t operator()( std::string const& k ) const
        {
            return std::hash<std::string>()(k);
        }
    };

    // forward
    template <typename ImplSelector, typename Key, typename Value>
    struct map_type;

    template <typename Key, typename Value>
    struct map_type_base
    {
        typedef map::hash<Key>    key_hash;
        typedef map::less<Key>    key_less;
        typedef cmp<Key>          key_compare;

        struct equal_to {
            bool operator()( Key const& k1, Key const& k2 ) const
            {
                return key_compare()( k1, k2 ) == 0;
            }
        };

        struct hash2: public key_hash
        {
            size_t operator()( Key const& k ) const
            {
                size_t h = key_hash::operator ()( k );
                size_t seed = ~h;
                seed ^= h + 0x9e3779b9 + (seed << 6) + (seed >> 2);
                return seed;
            }
            template <typename Q>
            size_t operator()( Q const& k ) const
            {
                size_t h = key_hash::operator ()( k );
                size_t seed = ~h;
                seed ^= h + 0x9e3779b9 + (seed << 6) + (seed >> 2);
                return seed;
            }
        };
    };

    struct empty_stat {};
    static inline cds_test::property_stream& operator <<( cds_test::property_stream& o, empty_stat const& )
    {
        return o;
    }

    template <typename Map>
    static inline void print_stat( cds_test::property_stream& o, Map const& m )
    {
        o << m.statistics();
    }


    template <typename Map>
    static inline void check_before_cleanup( Map& /*m*/ )
    {}

    template <typename Map>
    static inline void additional_cleanup( Map& /*m*/ )
    {}

    template <typename Map>
    static inline void additional_check( Map& /*m*/ )
    {}

} // namespace map

#endif // ifndef CDSUNIT_MAP_TYPE_H