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1 | // |
2 | // detail/posix_thread.hpp | |
3 | // ~~~~~~~~~~~~~~~~~~~~~~~ | |
4 | // | |
1e59de90 | 5 | // Copyright (c) 2003-2022 Christopher M. Kohlhoff (chris at kohlhoff dot com) |
7c673cae FG |
6 | // |
7 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | |
8 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
9 | // | |
10 | ||
11 | #ifndef BOOST_ASIO_DETAIL_POSIX_THREAD_HPP | |
12 | #define BOOST_ASIO_DETAIL_POSIX_THREAD_HPP | |
13 | ||
14 | #if defined(_MSC_VER) && (_MSC_VER >= 1200) | |
15 | # pragma once | |
16 | #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) | |
17 | ||
18 | #include <boost/asio/detail/config.hpp> | |
19 | ||
20 | #if defined(BOOST_ASIO_HAS_PTHREADS) | |
21 | ||
b32b8144 | 22 | #include <cstddef> |
7c673cae FG |
23 | #include <pthread.h> |
24 | #include <boost/asio/detail/noncopyable.hpp> | |
25 | ||
26 | #include <boost/asio/detail/push_options.hpp> | |
27 | ||
28 | namespace boost { | |
29 | namespace asio { | |
30 | namespace detail { | |
31 | ||
32 | extern "C" | |
33 | { | |
34 | BOOST_ASIO_DECL void* boost_asio_detail_posix_thread_function(void* arg); | |
35 | } | |
36 | ||
37 | class posix_thread | |
38 | : private noncopyable | |
39 | { | |
40 | public: | |
41 | // Constructor. | |
42 | template <typename Function> | |
43 | posix_thread(Function f, unsigned int = 0) | |
44 | : joined_(false) | |
45 | { | |
46 | start_thread(new func<Function>(f)); | |
47 | } | |
48 | ||
49 | // Destructor. | |
50 | BOOST_ASIO_DECL ~posix_thread(); | |
51 | ||
52 | // Wait for the thread to exit. | |
53 | BOOST_ASIO_DECL void join(); | |
54 | ||
b32b8144 FG |
55 | // Get number of CPUs. |
56 | BOOST_ASIO_DECL static std::size_t hardware_concurrency(); | |
57 | ||
7c673cae FG |
58 | private: |
59 | friend void* boost_asio_detail_posix_thread_function(void* arg); | |
60 | ||
61 | class func_base | |
62 | { | |
63 | public: | |
64 | virtual ~func_base() {} | |
65 | virtual void run() = 0; | |
66 | }; | |
67 | ||
68 | struct auto_func_base_ptr | |
69 | { | |
70 | func_base* ptr; | |
71 | ~auto_func_base_ptr() { delete ptr; } | |
72 | }; | |
73 | ||
74 | template <typename Function> | |
75 | class func | |
76 | : public func_base | |
77 | { | |
78 | public: | |
79 | func(Function f) | |
80 | : f_(f) | |
81 | { | |
82 | } | |
83 | ||
84 | virtual void run() | |
85 | { | |
86 | f_(); | |
87 | } | |
88 | ||
89 | private: | |
90 | Function f_; | |
91 | }; | |
92 | ||
93 | BOOST_ASIO_DECL void start_thread(func_base* arg); | |
94 | ||
95 | ::pthread_t thread_; | |
96 | bool joined_; | |
97 | }; | |
98 | ||
99 | } // namespace detail | |
100 | } // namespace asio | |
101 | } // namespace boost | |
102 | ||
103 | #include <boost/asio/detail/pop_options.hpp> | |
104 | ||
105 | #if defined(BOOST_ASIO_HEADER_ONLY) | |
106 | # include <boost/asio/detail/impl/posix_thread.ipp> | |
107 | #endif // defined(BOOST_ASIO_HEADER_ONLY) | |
108 | ||
109 | #endif // defined(BOOST_ASIO_HAS_PTHREADS) | |
110 | ||
111 | #endif // BOOST_ASIO_DETAIL_POSIX_THREAD_HPP |