summaryrefslogtreecommitdiffstatshomepage
path: root/3rdparty/asio/src/tests/unit/bind_allocator.cpp
blob: b7c11ffb53c70caff4d821fd37c214ec0371e035 (plain) (blame)
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
225
226
227
228
229
230
231
232
233
234
235
236
237
//
// bind_allocator.cpp
// ~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2024 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// 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)
//

// Disable autolinking for unit tests.
#if !defined(BOOST_ALL_NO_LIB)
#define BOOST_ALL_NO_LIB 1
#endif // !defined(BOOST_ALL_NO_LIB)

// Test that header file is self-contained.
#include "asio/bind_allocator.hpp"

#include <functional>
#include "asio/io_context.hpp"
#include "asio/steady_timer.hpp"
#include "unit_test.hpp"

#if defined(ASIO_HAS_BOOST_DATE_TIME)
# include "asio/deadline_timer.hpp"
#else // defined(ASIO_HAS_BOOST_DATE_TIME)
# include "asio/steady_timer.hpp"
#endif // defined(ASIO_HAS_BOOST_DATE_TIME)

using namespace asio;
namespace bindns = std;

#if defined(ASIO_HAS_BOOST_DATE_TIME)
typedef deadline_timer timer;
namespace chronons = boost::posix_time;
#else // defined(ASIO_HAS_BOOST_DATE_TIME)
typedef steady_timer timer;
namespace chronons = asio::chrono;
#endif // defined(ASIO_HAS_BOOST_DATE_TIME)

template <typename T>
class test_allocator
{
public:
  typedef T value_type;

  explicit test_allocator(int* allocations)
    : allocations_(allocations)
  {
  }

  template <typename U>
  test_allocator(const test_allocator<U>& other)
    : allocations_(other.allocations_)
  {
  }

  template <typename U>
  struct rebind
  {
    typedef test_allocator<U> other;
  };

  bool operator==(const test_allocator&) const
  {
    return true;
  }

  bool operator!=(const test_allocator&) const
  {
    return false;
  }

  T* allocate(std::size_t n) const
  {
    ++(*allocations_);
    return static_cast<T*>(::operator new(sizeof(T) * n));
  }

  void deallocate(T* p, std::size_t /*n*/) const
  {
    --(*allocations_);
    ::operator delete(p);
  }

//private:
  int* allocations_;
};

void increment(int* count)
{
  ++(*count);
}

void bind_allocator_to_function_object_test()
{
  io_context ioc;

  int count = 0;
  int allocations = 0;

  timer t(ioc, chronons::seconds(1));
  t.async_wait(
      bind_allocator(
        test_allocator<int>(&allocations),
        bindns::bind(&increment, &count)));

  ASIO_CHECK(count == 0);
  ASIO_CHECK(allocations == 1);

  ioc.run();

  ASIO_CHECK(count == 1);
  ASIO_CHECK(allocations == 0);

  t.async_wait(
      bind_allocator(
        test_allocator<int>(&allocations),
        bind_allocator(
          std::allocator<void>(),
          bindns::bind(&increment, &count))));

  ASIO_CHECK(count == 1);
  ASIO_CHECK(allocations == 1);

  ioc.restart();
  ioc.run();

  ASIO_CHECK(count == 2);
  ASIO_CHECK(allocations == 0);
}

struct incrementer_token_v1
{
  explicit incrementer_token_v1(int* c) : count(c) {}
  int* count;
};

struct incrementer_handler_v1
{
  explicit incrementer_handler_v1(incrementer_token_v1 t) : count(t.count) {}
  void operator()(asio::error_code){ increment(count); }
  int* count;
};

namespace asio {

template <>
class async_result<incrementer_token_v1, void(asio::error_code)>
{
public:
  typedef incrementer_handler_v1 completion_handler_type;
  typedef void return_type;
  explicit async_result(completion_handler_type&) {}
  return_type get() {}
};

} // namespace asio

void bind_allocator_to_completion_token_v1_test()
{
  io_context ioc;

  int count = 0;
  int allocations = 0;

  timer t(ioc, chronons::seconds(1));
  t.async_wait(
      bind_allocator(
        test_allocator<int>(&allocations),
        incrementer_token_v1(&count)));

  ASIO_CHECK(count == 0);
  ASIO_CHECK(allocations == 1);

  ioc.run();

  ASIO_CHECK(count == 1);
  ASIO_CHECK(allocations == 0);
}

struct incrementer_token_v2
{
  explicit incrementer_token_v2(int* c) : count(c) {}
  int* count;
};

namespace asio {

template <>
class async_result<incrementer_token_v2, void(asio::error_code)>
{
public:
#if !defined(ASIO_HAS_RETURN_TYPE_DEDUCTION)
  typedef void return_type;
#endif // !defined(ASIO_HAS_RETURN_TYPE_DEDUCTION)

  template <typename Initiation, typename... Args>
  static void initiate(Initiation initiation,
      incrementer_token_v2 token, Args&&... args)
  {
    initiation(bindns::bind(&increment, token.count),
        static_cast<Args&&>(args)...);
  }
};

} // namespace asio

void bind_allocator_to_completion_token_v2_test()
{
  io_context ioc;

  int count = 0;
  int allocations = 0;

  timer t(ioc, chronons::seconds(1));
  t.async_wait(
      bind_allocator(
        test_allocator<int>(&allocations),
        incrementer_token_v2(&count)));

  ASIO_CHECK(count == 0);
  ASIO_CHECK(allocations == 1);

  ioc.run();

  ASIO_CHECK(count == 1);
  ASIO_CHECK(allocations == 0);
}

ASIO_TEST_SUITE
(
  "bind_allocator",
  ASIO_TEST_CASE(bind_allocator_to_function_object_test)
  ASIO_TEST_CASE(bind_allocator_to_completion_token_v1_test)
  ASIO_TEST_CASE(bind_allocator_to_completion_token_v2_test)
)