blob: 69dcf08d4e175a1f2d7131b8cef97741c9445fe5 (
plain)
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
|
//
// detail/winapp_thread.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 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)
//
#ifndef ASIO_DETAIL_WINAPP_THREAD_HPP
#define ASIO_DETAIL_WINAPP_THREAD_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_WINDOWS) && defined(ASIO_WINDOWS_APP)
#include "asio/detail/noncopyable.hpp"
#include "asio/detail/scoped_ptr.hpp"
#include "asio/detail/socket_types.hpp"
#include "asio/detail/throw_error.hpp"
#include "asio/error.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
DWORD WINAPI winapp_thread_function(LPVOID arg);
class winapp_thread
: private noncopyable
{
public:
// Constructor.
template <typename Function>
winapp_thread(Function f, unsigned int = 0)
{
scoped_ptr<func_base> arg(new func<Function>(f));
DWORD thread_id = 0;
thread_ = ::CreateThread(0, 0, winapp_thread_function,
arg.get(), 0, &thread_id);
if (!thread_)
{
DWORD last_error = ::GetLastError();
asio::error_code ec(last_error,
asio::error::get_system_category());
asio::detail::throw_error(ec, "thread");
}
arg.release();
}
// Destructor.
~winapp_thread()
{
::CloseHandle(thread_);
}
// Wait for the thread to exit.
void join()
{
::WaitForSingleObjectEx(thread_, INFINITE, false);
}
// Get number of CPUs.
static std::size_t hardware_concurrency()
{
SYSTEM_INFO system_info;
::GetNativeSystemInfo(&system_info);
return system_info.dwNumberOfProcessors;
}
private:
friend DWORD WINAPI winapp_thread_function(LPVOID arg);
class func_base
{
public:
virtual ~func_base() {}
virtual void run() = 0;
};
template <typename Function>
class func
: public func_base
{
public:
func(Function f)
: f_(f)
{
}
virtual void run()
{
f_();
}
private:
Function f_;
};
::HANDLE thread_;
};
inline DWORD WINAPI winapp_thread_function(LPVOID arg)
{
scoped_ptr<winapp_thread::func_base> func(
static_cast<winapp_thread::func_base*>(arg));
func->run();
return 0;
}
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // defined(ASIO_WINDOWS) && defined(ASIO_WINDOWS_APP)
#endif // ASIO_DETAIL_WINAPP_THREAD_HPP
|
