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1 | // Copyright (C) 2014 Vicente Botet |
2 | // | |
3 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | |
4 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
5 | ||
6 | // <boost/thread/future.hpp> | |
7 | ||
8 | // class future<R> | |
9 | ||
10 | // template<typename F> | |
11 | // auto then(F&& func) -> future<decltype(func(*this))>; | |
12 | ||
13 | #define BOOST_THREAD_VERSION 4 | |
14 | #define BOOST_THREAD_PROVIDES_EXECUTORS | |
15 | //#define BOOST_THREAD_USES_LOG | |
16 | #define BOOST_THREAD_USES_LOG_THREAD_ID | |
17 | #include <boost/thread/detail/log.hpp> | |
18 | ||
19 | #include <boost/thread/future.hpp> | |
20 | #include <boost/thread/executors/basic_thread_pool.hpp> | |
21 | #include <boost/thread/executor.hpp> | |
22 | #include <boost/detail/lightweight_test.hpp> | |
23 | ||
24 | #if defined BOOST_THREAD_PROVIDES_FUTURE_CONTINUATION | |
25 | ||
b32b8144 FG |
26 | #ifdef BOOST_MSVC |
27 | #pragma warning(disable: 4127) // conditional expression is constant | |
28 | #endif | |
29 | ||
7c673cae FG |
30 | int p1() |
31 | { | |
32 | BOOST_THREAD_LOG << "p1 < " << BOOST_THREAD_END_LOG; | |
33 | boost::this_thread::sleep_for(boost::chrono::milliseconds(500)); | |
34 | BOOST_THREAD_LOG << "p1 >" << BOOST_THREAD_END_LOG; | |
35 | return 1; | |
36 | } | |
37 | ||
38 | int p2(boost::shared_future<int> f) | |
39 | { | |
40 | BOOST_THREAD_LOG << "p2 <" << &f << BOOST_THREAD_END_LOG; | |
41 | BOOST_TEST(f.valid()); | |
42 | int i = f.get(); | |
43 | boost::this_thread::sleep_for(boost::chrono::milliseconds(500)); | |
44 | BOOST_THREAD_LOG << "p2 <" << &f << BOOST_THREAD_END_LOG; | |
45 | return 2 * i; | |
46 | } | |
47 | ||
48 | void p3(boost::shared_future<int> f) | |
49 | { | |
50 | BOOST_THREAD_LOG << "p3 <" << &f << BOOST_THREAD_END_LOG; | |
51 | BOOST_TEST(f.valid()); | |
52 | int i = f.get(); | |
53 | boost::this_thread::sleep_for(boost::chrono::milliseconds(500)); | |
54 | BOOST_THREAD_LOG << "p3 <" << &f << " " << i << BOOST_THREAD_END_LOG; | |
55 | return ; | |
56 | } | |
57 | ||
58 | int main() | |
59 | { | |
60 | BOOST_THREAD_LOG << BOOST_THREAD_END_LOG; | |
61 | { | |
62 | boost::basic_thread_pool ex(1); | |
63 | boost::shared_future<int> f1 = boost::async(boost::launch::async, &p1).share(); | |
64 | BOOST_TEST(f1.valid()); | |
65 | boost::future<int> f2 = f1.then(ex, &p2); | |
66 | BOOST_TEST(f2.valid()); | |
67 | try | |
68 | { | |
69 | BOOST_TEST(f2.get()==2); | |
70 | } | |
71 | catch (std::exception& ex) | |
72 | { | |
73 | BOOST_THREAD_LOG << "ERRORRRRR "<<ex.what() << "" << BOOST_THREAD_END_LOG; | |
74 | BOOST_TEST(false); | |
75 | } | |
76 | catch (...) | |
77 | { | |
78 | BOOST_THREAD_LOG << " ERRORRRRR exception thrown" << BOOST_THREAD_END_LOG; | |
79 | BOOST_TEST(false); | |
80 | } | |
81 | } | |
82 | BOOST_THREAD_LOG << BOOST_THREAD_END_LOG; | |
83 | { | |
84 | boost::basic_thread_pool ex(1); | |
85 | boost::shared_future<int> f1 = boost::async(boost::launch::async, &p1).share(); | |
86 | BOOST_TEST(f1.valid()); | |
87 | boost::future<void> f2 = f1.then(ex, &p3); | |
88 | BOOST_TEST(f2.valid()); | |
89 | try | |
90 | { | |
91 | f2.wait(); | |
92 | } | |
93 | catch (std::exception& ex) | |
94 | { | |
95 | BOOST_THREAD_LOG << "ERRORRRRR "<<ex.what() << "" << BOOST_THREAD_END_LOG; | |
96 | BOOST_TEST(false); | |
97 | } | |
98 | catch (...) | |
99 | { | |
100 | BOOST_THREAD_LOG << " ERRORRRRR exception thrown" << BOOST_THREAD_END_LOG; | |
101 | BOOST_TEST(false); | |
102 | } | |
103 | } | |
104 | BOOST_THREAD_LOG << BOOST_THREAD_END_LOG; | |
105 | { | |
106 | boost::basic_thread_pool ex(1); | |
107 | boost::future<int> f2 = boost::async(p1).share().then(ex, &p2); | |
108 | BOOST_TEST(f2.get()==2); | |
109 | } | |
110 | BOOST_THREAD_LOG << BOOST_THREAD_END_LOG; | |
111 | { | |
112 | boost::basic_thread_pool ex(1); | |
113 | boost::shared_future<int> f1 = boost::async(p1).share(); | |
114 | boost::shared_future<int> f21 = f1.then(ex, &p2).share(); | |
115 | boost::future<int> f2= f21.then(ex, &p2); | |
116 | BOOST_TEST(f2.get()==4); | |
117 | } | |
118 | BOOST_THREAD_LOG << BOOST_THREAD_END_LOG; | |
119 | { | |
120 | boost::basic_thread_pool ex(1); | |
121 | boost::shared_future<int> f1 = boost::async(p1).share(); | |
122 | boost::shared_future<int> f21 = f1.then(ex, &p2).share(); | |
123 | boost::future<int> f2= f21.then(&p2); | |
124 | BOOST_TEST(f2.get()==4); | |
125 | } | |
126 | BOOST_THREAD_LOG << BOOST_THREAD_END_LOG; | |
127 | { | |
128 | boost::basic_thread_pool ex(1); | |
129 | boost::shared_future<int> f1 = boost::async(p1).share(); | |
130 | boost::future<int> f2= f1.then(ex, &p2).share().then(ex, &p2); | |
131 | BOOST_TEST(f2.get()==4); | |
132 | } | |
133 | BOOST_THREAD_LOG << BOOST_THREAD_END_LOG; | |
134 | { | |
135 | boost::basic_thread_pool ex(1); | |
136 | boost::future<int> f2 = boost::async(p1).share().then(ex, &p2).share().then(ex, &p2); | |
137 | BOOST_TEST(f2.get()==4); | |
138 | } | |
139 | ||
140 | return boost::report_errors(); | |
141 | } | |
142 | ||
143 | #else | |
144 | ||
145 | int main() | |
146 | { | |
147 | return 0; | |
148 | } | |
149 | #endif |