1// -*- C++ -*-
2//===----------------------------------------------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef LIBCPP_TEST_STD_UTILITIES_MEMORY_SPECIALIZED_ALGORITHMS_COUNTED_H
11#define LIBCPP_TEST_STD_UTILITIES_MEMORY_SPECIALIZED_ALGORITHMS_COUNTED_H
12
13#include "test_macros.h"
14
15struct Counted {
16 static int current_objects;
17 static int total_objects;
18 static int total_copies;
19 static int total_moves;
20 static int throw_on;
21
22 int value;
23 bool moved_from = false;
24
25 explicit Counted() {
26 check_throw();
27 increase_counters();
28 }
29
30 explicit Counted(int v) : value(v) {
31 check_throw();
32 increase_counters();
33 }
34
35 ~Counted() { --current_objects; }
36
37 static void reset() {
38 current_objects = total_objects = 0;
39 total_copies = total_moves = 0;
40 throw_on = -1;
41 }
42
43 Counted(const Counted& rhs) : value(rhs.value) {
44 check_throw();
45 increase_counters();
46 ++total_copies;
47 }
48
49 Counted(Counted&& rhs) : value(rhs.value) {
50 check_throw();
51 increase_counters();
52
53 rhs.moved_from = true;
54 ++total_moves;
55 }
56
57 friend bool operator==(const Counted& l, const Counted& r) {
58 return l.value == r.value;
59 }
60
61 friend bool operator!=(const Counted& l, const Counted& r) {
62 return !(l == r);
63 }
64
65 friend void operator&(Counted) = delete;
66
67private:
68 void check_throw() {
69 if (throw_on == total_objects) {
70 TEST_THROW(1);
71 }
72 }
73
74 void increase_counters() {
75 ++current_objects;
76 ++total_objects;
77 }
78};
79int Counted::current_objects = 0;
80int Counted::total_objects = 0;
81int Counted::total_copies = 0;
82int Counted::total_moves = 0;
83int Counted::throw_on = -1;
84
85#endif // LIBCPP_TEST_STD_UTILITIES_MEMORY_SPECIALIZED_ALGORITHMS_COUNTED_H
86

source code of libcxx/test/std/utilities/memory/specialized.algorithms/counted.h