1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
7 * <brain@chatspike.net>
8 * <Craig@chatspike.net>
10 * Written by Craig Edwards, Craig McLure, and others.
11 * This program is free but copyrighted software; see
12 * the file COPYING for details.
14 * ---------------------------------------------------
18 #include <sys/epoll.h>
19 #include "socketengine_epoll.h"
21 EPollEngine::EPollEngine(InspIRCd* Instance) : SocketEngine(Instance)
23 EngineHandle = epoll_create(MAX_DESCRIPTORS);
25 if (EngineHandle == -1)
27 ServerInstance->Log(SPARSE,"ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.");
28 ServerInstance->Log(SPARSE,"ERROR: this is a fatal error, exiting now.");
29 printf("ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.");
30 printf("ERROR: this is a fatal error, exiting now.");
31 InspIRCd::Exit(ERROR);
36 EPollEngine::~EPollEngine()
41 bool EPollEngine::AddFd(EventHandler* eh)
44 if ((fd < 0) || (fd > MAX_DESCRIPTORS))
46 ServerInstance->Log(DEFAULT,"ERROR: FD of %d added above max of %d",fd,MAX_DESCRIPTORS);
49 if (GetRemainingFds() <= 1)
51 ServerInstance->Log(DEFAULT,"ERROR: System out of file descriptors!");
56 ServerInstance->Log(DEFAULT,"Slot %d already occupied",fd);
62 ServerInstance->Log(DEBUG,"***** Add socket %d",fd);
64 struct epoll_event ev;
65 memset(&ev,0,sizeof(struct epoll_event));
66 ServerInstance->Log(DEBUG,"epoll: Add socket to events, ep=%d socket=%d",EngineHandle,fd);
67 eh->Readable() ? ev.events = EPOLLIN : ev.events = EPOLLOUT;
69 int i = epoll_ctl(EngineHandle, EPOLL_CTL_ADD, fd, &ev);
72 ServerInstance->Log(DEBUG,"epoll: List insertion failure!");
80 void EPollEngine::WantWrite(EventHandler* eh)
82 /** Use oneshot so that the system removes the writeable
83 * status for us and saves us a call.
85 struct epoll_event ev;
86 ev.events = EPOLLOUT | EPOLLONESHOT;
87 ev.data.fd = eh->GetFd();
88 int i = epoll_ctl(EngineHandle, EPOLL_CTL_MOD, eh->GetFd(), &ev);
91 ServerInstance->Log(DEBUG,"epoll: Could not set want write on fd %d!",eh->GetFd());
95 bool EPollEngine::DelFd(EventHandler* eh)
97 ServerInstance->Log(DEBUG,"EPollEngine::DelFd(%d)",eh->GetFd());
100 if ((fd < 0) || (fd > MAX_DESCRIPTORS))
103 struct epoll_event ev;
104 memset(&ev,0,sizeof(struct epoll_event));
105 eh->Readable() ? ev.events = EPOLLIN : ev.events = EPOLLOUT;
107 int i = epoll_ctl(EngineHandle, EPOLL_CTL_DEL, fd, &ev);
111 ServerInstance->Log(DEBUG,"epoll: List deletion failure: %s",strerror(errno));
121 int EPollEngine::GetMaxFds()
123 return MAX_DESCRIPTORS;
126 int EPollEngine::GetRemainingFds()
128 return MAX_DESCRIPTORS - CurrentSetSize;
131 int EPollEngine::DispatchEvents()
135 int i = epoll_wait(EngineHandle, events, MAX_DESCRIPTORS, 150);
136 for (int j = 0; j < i; j++)
138 ServerInstance->Log(DEBUG,"Handle %s event on fd %d",events[j].events & EPOLLOUT ? "write" : "read", events[j].data.fd);
139 if (events[j].events & EPOLLHUP)
141 ref[events[j].data.fd]->HandleEvent(EVENT_ERROR, 0);
144 if (events[j].events & EPOLLERR)
146 /* Get error number */
147 if (getsockopt(events[j].data.fd, SOL_SOCKET, SO_ERROR, &errcode, &codesize) < 0)
149 ref[events[j].data.fd]->HandleEvent(EVENT_ERROR, errcode);
152 if (events[j].events & EPOLLOUT)
154 struct epoll_event ev;
156 ev.data.fd = events[j].data.fd;
157 int i = epoll_ctl(EngineHandle, EPOLL_CTL_MOD, events[j].data.fd, &ev);
160 ServerInstance->Log(DEBUG,"epoll: Could not reset fd %d!", events[j].data.fd);
162 if (ref[events[j].data.fd])
163 ref[events[j].data.fd]->HandleEvent(EVENT_WRITE);
167 if (ref[events[j].data.fd])
168 ref[events[j].data.fd]->HandleEvent(EVENT_READ);
175 std::string EPollEngine::GetName()