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 "exitcodes.h"
16 #include <sys/epoll.h>
17 #include "socketengine_epoll.h"
19 EPollEngine::EPollEngine(InspIRCd* Instance) : SocketEngine(Instance)
21 EngineHandle = epoll_create(MAX_DESCRIPTORS);
23 if (EngineHandle == -1)
25 ServerInstance->Log(SPARSE,"ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.");
26 ServerInstance->Log(SPARSE,"ERROR: this is a fatal error, exiting now.");
27 printf("ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.");
28 printf("ERROR: this is a fatal error, exiting now.");
29 InspIRCd::Exit(EXIT_STATUS_SOCKETENGINE);
34 EPollEngine::~EPollEngine()
39 bool EPollEngine::AddFd(EventHandler* eh)
42 if ((fd < 0) || (fd > MAX_DESCRIPTORS))
44 ServerInstance->Log(DEBUG,"ERROR: FD of %d added above max of %d",fd,MAX_DESCRIPTORS);
47 if (GetRemainingFds() <= 1)
49 ServerInstance->Log(DEBUG,"ERROR: System out of file descriptors!");
54 ServerInstance->Log(DEBUG,"Slot %d already occupied",fd);
60 ServerInstance->Log(DEBUG,"***** Add socket %d",fd);
62 struct epoll_event ev;
63 memset(&ev,0,sizeof(struct epoll_event));
64 ServerInstance->Log(DEBUG,"epoll: Add socket to events, ep=%d socket=%d",EngineHandle,fd);
65 eh->Readable() ? ev.events = EPOLLIN : ev.events = EPOLLOUT;
67 int i = epoll_ctl(EngineHandle, EPOLL_CTL_ADD, fd, &ev);
70 ServerInstance->Log(DEBUG,"epoll: List insertion failure!");
78 void EPollEngine::WantWrite(EventHandler* eh)
80 /** Use oneshot so that the system removes the writeable
81 * status for us and saves us a call.
83 struct epoll_event ev;
84 memset(&ev,0,sizeof(struct epoll_event));
86 ev.data.fd = eh->GetFd();
87 int i = epoll_ctl(EngineHandle, EPOLL_CTL_MOD, eh->GetFd(), &ev);
90 ServerInstance->Log(DEBUG,"epoll: Could not set want write on fd %d!",eh->GetFd());
94 bool EPollEngine::DelFd(EventHandler* eh)
96 ServerInstance->Log(DEBUG,"EPollEngine::DelFd(%d)",eh->GetFd());
99 if ((fd < 0) || (fd > MAX_DESCRIPTORS))
102 struct epoll_event ev;
103 memset(&ev,0,sizeof(struct epoll_event));
104 eh->Readable() ? ev.events = EPOLLIN : ev.events = EPOLLOUT;
106 int i = epoll_ctl(EngineHandle, EPOLL_CTL_DEL, fd, &ev);
110 ServerInstance->Log(DEBUG,"epoll: List deletion failure: %s",strerror(errno));
120 int EPollEngine::GetMaxFds()
122 return MAX_DESCRIPTORS;
125 int EPollEngine::GetRemainingFds()
127 return MAX_DESCRIPTORS - CurrentSetSize;
130 int EPollEngine::DispatchEvents()
134 int i = epoll_wait(EngineHandle, events, MAX_DESCRIPTORS, 150);
135 for (int j = 0; j < i; j++)
137 ServerInstance->Log(DEBUG,"Handle %s event on fd %d",events[j].events & EPOLLOUT ? "write" : "read", events[j].data.fd);
138 if (events[j].events & EPOLLHUP)
140 ServerInstance->Log(DEBUG,"Handle error event on fd %d", events[j].data.fd);
141 if (ref[events[j].data.fd])
142 ref[events[j].data.fd]->HandleEvent(EVENT_ERROR, 0);
145 if (events[j].events & EPOLLERR)
147 /* Get error number */
148 if (getsockopt(events[j].data.fd, SOL_SOCKET, SO_ERROR, &errcode, &codesize) < 0)
150 ServerInstance->Log(DEBUG,"Handle error event on fd %d: %s", events[j].data.fd, strerror(errcode));
151 if (ref[events[j].data.fd])
152 ref[events[j].data.fd]->HandleEvent(EVENT_ERROR, errcode);
155 if (events[j].events & EPOLLOUT)
157 struct epoll_event ev;
158 memset(&ev,0,sizeof(struct epoll_event));
160 ev.data.fd = events[j].data.fd;
161 int i = epoll_ctl(EngineHandle, EPOLL_CTL_MOD, events[j].data.fd, &ev);
164 ServerInstance->Log(DEBUG,"epoll: Could not reset fd %d!", events[j].data.fd);
166 if (ref[events[j].data.fd])
167 ref[events[j].data.fd]->HandleEvent(EVENT_WRITE);
171 if (ref[events[j].data.fd])
172 ref[events[j].data.fd]->HandleEvent(EVENT_READ);
179 std::string EPollEngine::GetName()