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
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
// **********************************************************************
//
// Copyright (c) 2003-2011 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#ifndef ICE_SELECTOR_H
#define ICE_SELECTOR_H
#include <IceUtil/StringUtil.h>
#include <Ice/Network.h>
#include <Ice/InstanceF.h>
#include <Ice/EventHandlerF.h>
#if defined(ICE_USE_EPOLL)
# include <sys/epoll.h>
#elif defined(ICE_USE_KQUEUE)
# include <sys/event.h>
#elif defined(ICE_USE_IOCP)
// Nothing to include
#elif defined(ICE_USE_POLL)
# include <sys/poll.h>
#endif
namespace IceInternal
{
//
// Exception raised if select times out.
//
class SelectorTimeoutException
{
};
#ifdef ICE_USE_IOCP
class Selector
{
public:
Selector(const InstancePtr&);
~Selector();
void setup(int);
void destroy();
void initialize(EventHandler*);
void update(EventHandler*, SocketOperation, SocketOperation);
void finish(EventHandler*);
EventHandler* getNextHandler(SocketOperation&, int);
HANDLE getIOCPHandle() { return _handle; }
private:
const InstancePtr _instance;
HANDLE _handle;
};
#elif defined(ICE_USE_KQUEUE) || defined(ICE_USE_EPOLL)
class Selector
{
public:
Selector(const InstancePtr&);
~Selector();
void destroy();
void initialize(EventHandler*)
{
// Nothing to do
}
void update(EventHandler*, SocketOperation, SocketOperation);
void enable(EventHandler*, SocketOperation);
void disable(EventHandler*, SocketOperation);
void finish(EventHandler*);
#if defined(ICE_USE_KQUEUE)
void updateSelector();
#endif
void
startSelect()
{
#ifdef ICE_USE_KQUEUE
_selecting = true;
if(!_changes.empty())
{
updateSelector();
}
#endif
}
void
finishSelect()
{
#ifdef ICE_USE_KQUEUE
_selecting = false;
#endif
}
void select(std::vector<std::pair<EventHandler*, SocketOperation> >&, int);
private:
const InstancePtr _instance;
#if defined(ICE_USE_EPOLL)
std::vector<struct epoll_event> _events;
#else
std::vector<struct kevent> _events;
std::vector<struct kevent> _changes;
bool _selecting;
#endif
int _queueFd;
};
#elif defined(ICE_USE_SELECT) || defined(ICE_USE_POLL)
class Selector
{
public:
Selector(const InstancePtr&);
~Selector();
void destroy();
void initialize(EventHandler*)
{
// Nothing to do
}
void update(EventHandler*, SocketOperation, SocketOperation);
void enable(EventHandler*, SocketOperation);
void disable(EventHandler*, SocketOperation);
void finish(EventHandler*);
void startSelect();
void finishSelect();
void select(std::vector<std::pair<EventHandler*, SocketOperation> >&, int);
private:
void updateSelector();
void updateImpl(EventHandler*);
const InstancePtr _instance;
SOCKET _fdIntrRead;
SOCKET _fdIntrWrite;
bool _selecting;
bool _interrupted;
std::vector<std::pair<EventHandler*, SocketOperation> > _changes;
std::map<SOCKET, EventHandler*> _handlers;
#if defined(ICE_USE_SELECT)
fd_set _readFdSet;
fd_set _writeFdSet;
fd_set _errorFdSet;
fd_set _selectedReadFdSet;
fd_set _selectedWriteFdSet;
fd_set _selectedErrorFdSet;
fd_set*
fdSetCopy(fd_set& dest, fd_set& src)
{
if(src.fd_count > 0)
{
dest.fd_count = src.fd_count;
memcpy(dest.fd_array, src.fd_array, sizeof(SOCKET) * src.fd_count);
return &dest;
}
return 0;
}
#else
std::vector<struct pollfd> _pollFdSet;
#endif
};
#endif
}
#endif
|
