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
|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
* E-mail:
* <brain@chatspike.net>
* <Craig@chatspike.net>
*
* Written by Craig Edwards, Craig McLure, and others.
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include "inspircd.h"
#include <sys/epoll.h>
#include "socketengine_epoll.h"
EPollEngine::EPollEngine(InspIRCd* Instance) : SocketEngine(Instance)
{
EngineHandle = epoll_create(MAX_DESCRIPTORS);
if (EngineHandle == -1)
{
ServerInstance->Log(SPARSE,"ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.");
ServerInstance->Log(SPARSE,"ERROR: this is a fatal error, exiting now.");
printf("ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.");
printf("ERROR: this is a fatal error, exiting now.");
InspIRCd::Exit(ERROR);
}
CurrentSetSize = 0;
}
EPollEngine::~EPollEngine()
{
close(EngineHandle);
}
bool EPollEngine::AddFd(EventHandler* eh)
{
int fd = eh->GetFd();
if ((fd < 0) || (fd > MAX_DESCRIPTORS))
{
ServerInstance->Log(DEFAULT,"ERROR: FD of %d added above max of %d",fd,MAX_DESCRIPTORS);
return false;
}
if (GetRemainingFds() <= 1)
{
ServerInstance->Log(DEFAULT,"ERROR: System out of file descriptors!");
return false;
}
if (ref[fd])
{
ServerInstance->Log(DEFAULT,"Slot %d already occupied",fd);
return false;
}
ref[fd] = eh;
ServerInstance->Log(DEBUG,"***** Add socket %d",fd);
struct epoll_event ev;
memset(&ev,0,sizeof(struct epoll_event));
ServerInstance->Log(DEBUG,"epoll: Add socket to events, ep=%d socket=%d",EngineHandle,fd);
eh->Readable() ? ev.events = EPOLLIN : ev.events = EPOLLOUT;
ev.data.fd = fd;
int i = epoll_ctl(EngineHandle, EPOLL_CTL_ADD, fd, &ev);
if (i < 0)
{
ServerInstance->Log(DEBUG,"epoll: List insertion failure!");
return false;
}
CurrentSetSize++;
return true;
}
bool EPollEngine::DelFd(EventHandler* eh)
{
ServerInstance->Log(DEBUG,"EPollEngine::DelFd(%d)",eh->GetFd());
int fd = eh->GetFd();
if ((fd < 0) || (fd > MAX_DESCRIPTORS))
return false;
struct epoll_event ev;
memset(&ev,0,sizeof(struct epoll_event));
ref[fd]->Readable() ? ev.events = EPOLLIN : ev.events = EPOLLOUT;
ev.data.fd = fd;
int i = epoll_ctl(EngineHandle, EPOLL_CTL_DEL, fd, &ev);
if (i < 0)
{
ServerInstance->Log(DEBUG,"epoll: List deletion failure!");
return false;
}
CurrentSetSize--;
ref[fd] = NULL;
return true;
}
int EPollEngine::GetMaxFds()
{
return MAX_DESCRIPTORS;
}
int EPollEngine::GetRemainingFds()
{
return MAX_DESCRIPTORS - CurrentSetSize;
}
int EPollEngine::DispatchEvents()
{
int i = epoll_wait(EngineHandle, events, MAX_DESCRIPTORS, 50);
for (int j = 0; j < i; j++)
{
ServerInstance->Log(DEBUG,"Handle %s event on fd %d",ref[events[j].data.fd]->Readable() ? "read" : "write", ref[events[j].data.fd]->GetFd());
ref[events[j].data.fd]->HandleEvent(ref[events[j].data.fd]->Readable() ? EVENT_READ : EVENT_WRITE);
}
return i;
}
std::string EPollEngine::GetName()
{
return "epoll";
}
|
