-
Notifications
You must be signed in to change notification settings - Fork 140
/
epoll_reactor.hpp
executable file
·116 lines (94 loc) · 3.68 KB
/
epoll_reactor.hpp
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
//
// detail/impl/epoll_reactor.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2017 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_IMPL_EPOLL_REACTOR_HPP
#define ASIO_DETAIL_IMPL_EPOLL_REACTOR_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#if defined(ASIO_HAS_EPOLL)
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
//以下接口是开放给
template <typename Time_Traits>
//deadline_timer_service::deadline_timer_service构造函数中调用
void epoll_reactor::add_timer_queue(timer_queue<Time_Traits>& queue)
{
//调用epoll_reactor::do_add_timer_queue
do_add_timer_queue(queue);
}
template <typename Time_Traits>
void epoll_reactor::remove_timer_queue(timer_queue<Time_Traits>& queue)
{
//调用epoll_reactor::do_remove_timer_queue
do_remove_timer_queue(queue);
}
// Cancel any asynchronous wait operations associated with the timer.
//mongodb通过AsyncTimerASIO::cancel->basic_waitable_timer::cancel->waitable_timer_service::cancel
//->deadline_timer_service::cancel->epoll_reactor::cancel_timer
//mongodb通过AsyncTimerASIO::expireAfter->basic_waitable_timer::expires_after->waitable_timer_service::expires_after
//->deadline_timer_service::expires_after->deadline_timer_service::expires_at->deadline_timer_service::cancel
//->epoll_reactor::cancel_timer
//mongodb通过AsyncTimerASIO::async_wait->basic_waitable_timer::async_wait->waitable_timer_service::async_wait
//->deadline_timer_service::async_wait->epoll_reactor::schedule_timer
template <typename Time_Traits>
void epoll_reactor::schedule_timer(timer_queue<Time_Traits>& queue,
const typename Time_Traits::time_type& time,
typename timer_queue<Time_Traits>::per_timer_data& timer, wait_op* op)
{
mutex::scoped_lock lock(mutex_);
if (shutdown_)
{//epoll_reactor::post_immediate_completion
scheduler_.post_immediate_completion(op, false);
return;
}
//执行timer_queue::enqueue_timer
bool earliest = queue.enqueue_timer(time, timer, op);
scheduler_.work_started();//epoll_reactor::work_started
if (earliest)
update_timeout();
}
//mongodb通过AsyncTimerASIO::expireAfter->basic_waitable_timer::expires_after->waitable_timer_service::expires_after
//->deadline_timer_service::expires_after->deadline_timer_service::expires_at->deadline_timer_service::cancel
//->epoll_reactor::cancel_timer
template <typename Time_Traits>
std::size_t epoll_reactor::cancel_timer(timer_queue<Time_Traits>& queue,
typename timer_queue<Time_Traits>::per_timer_data& timer,
std::size_t max_cancelled)
{
mutex::scoped_lock lock(mutex_);
op_queue<operation> ops;
//执行timer_queue::cancel_timer
std::size_t n = queue.cancel_timer(timer, ops, max_cancelled);
lock.unlock();
//epoll_reactor::post_deferred_completions
scheduler_.post_deferred_completions(ops);
return n;
}
template <typename Time_Traits>
void epoll_reactor::move_timer(timer_queue<Time_Traits>& queue,
typename timer_queue<Time_Traits>::per_timer_data& target,
typename timer_queue<Time_Traits>::per_timer_data& source)
{
mutex::scoped_lock lock(mutex_);
op_queue<operation> ops;
//执行timer_queue::cancel_timer
queue.cancel_timer(target, ops);
//执行timer_queue::move_timer
queue.move_timer(target, source);
lock.unlock();
//epoll_reactor::post_deferred_completions
scheduler_.post_deferred_completions(ops);
}
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // defined(ASIO_HAS_EPOLL)
#endif // ASIO_DETAIL_IMPL_EPOLL_REACTOR_HPP