1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2007 InspIRCd Development Team
6 * See: http://www.inspircd.org/wiki/index.php/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
15 #include <sys/epoll.h>
16 #include "socketengine_epoll.h"
18 EPollEngine::EPollEngine(InspIRCd* Instance) : SocketEngine(Instance)
20 EngineHandle = epoll_create(MAX_DESCRIPTORS);
22 if (EngineHandle == -1)
24 ServerInstance->Log(SPARSE,"ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.");
25 ServerInstance->Log(SPARSE,"ERROR: this is a fatal error, exiting now.");
26 printf("ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.");
27 printf("ERROR: this is a fatal error, exiting now.");
28 InspIRCd::Exit(ERROR);
33 EPollEngine::~EPollEngine()
38 bool EPollEngine::AddFd(EventHandler* eh)
41 if ((fd < 0) || (fd > MAX_DESCRIPTORS))
43 ServerInstance->Log(DEBUG,"ERROR: FD of %d added above max of %d",fd,MAX_DESCRIPTORS);
46 if (GetRemainingFds() <= 1)
48 ServerInstance->Log(DEBUG,"ERROR: System out of file descriptors!");
53 ServerInstance->Log(DEBUG,"Slot %d already occupied",fd);
59 ServerInstance->Log(DEBUG,"***** Add socket %d",fd);
61 struct epoll_event ev;
62 memset(&ev,0,sizeof(struct epoll_event));
63 ServerInstance->Log(DEBUG,"epoll: Add socket to events, ep=%d socket=%d",EngineHandle,fd);
64 eh->Readable() ? ev.events = EPOLLIN : ev.events = EPOLLOUT;
66 int i = epoll_ctl(EngineHandle, EPOLL_CTL_ADD, fd, &ev);
69 ServerInstance->Log(DEBUG,"epoll: List insertion failure!");
77 void EPollEngine::WantWrite(EventHandler* eh)
79 /** Use oneshot so that the system removes the writeable
80 * status for us and saves us a call.
82 struct epoll_event ev;
83 memset(&ev,0,sizeof(struct epoll_event));
85 ev.data.fd = eh->GetFd();
86 int i = epoll_ctl(EngineHandle, EPOLL_CTL_MOD, eh->GetFd(), &ev);
89 ServerInstance->Log(DEBUG,"epoll: Could not set want write on fd %d!",eh->GetFd());
93 bool EPollEngine::DelFd(EventHandler* eh)
95 ServerInstance->Log(DEBUG,"EPollEngine::DelFd(%d)",eh->GetFd());
98 if ((fd < 0) || (fd > MAX_DESCRIPTORS))
101 struct epoll_event ev;
102 memset(&ev,0,sizeof(struct epoll_event));
103 eh->Readable() ? ev.events = EPOLLIN : ev.events = EPOLLOUT;
105 int i = epoll_ctl(EngineHandle, EPOLL_CTL_DEL, fd, &ev);
109 ServerInstance->Log(DEBUG,"epoll: List deletion failure: %s",strerror(errno));
119 int EPollEngine::GetMaxFds()
121 return MAX_DESCRIPTORS;
124 int EPollEngine::GetRemainingFds()
126 return MAX_DESCRIPTORS - CurrentSetSize;
129 int EPollEngine::DispatchEvents()
133 int i = epoll_wait(EngineHandle, events, MAX_DESCRIPTORS, 150);
134 for (int j = 0; j < i; j++)
136 ServerInstance->Log(DEBUG,"Handle %s event on fd %d",events[j].events & EPOLLOUT ? "write" : "read", events[j].data.fd);
137 if (events[j].events & EPOLLHUP)
139 ServerInstance->Log(DEBUG,"Handle error event on fd %d", events[j].data.fd);
140 if (ref[events[j].data.fd])
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 ServerInstance->Log(DEBUG,"Handle error event on fd %d: %s", events[j].data.fd, strerror(errcode));
150 if (ref[events[j].data.fd])
151 ref[events[j].data.fd]->HandleEvent(EVENT_ERROR, errcode);
154 if (events[j].events & EPOLLOUT)
156 struct epoll_event ev;
157 memset(&ev,0,sizeof(struct epoll_event));
159 ev.data.fd = events[j].data.fd;
160 int i = epoll_ctl(EngineHandle, EPOLL_CTL_MOD, events[j].data.fd, &ev);
163 ServerInstance->Log(DEBUG,"epoll: Could not reset fd %d!", events[j].data.fd);
165 if (ref[events[j].data.fd])
166 ref[events[j].data.fd]->HandleEvent(EVENT_WRITE);
170 if (ref[events[j].data.fd])
171 ref[events[j].data.fd]->HandleEvent(EVENT_READ);
178 std::string EPollEngine::GetName()