1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2008 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 "socketengines/socketengine_epoll.h"
20 EPollEngine::EPollEngine(InspIRCd* Instance) : SocketEngine(Instance)
22 EngineHandle = epoll_create(GetMaxFds());
24 if (EngineHandle == -1)
26 ServerInstance->Logs->Log("SOCKET",DEFAULT, "ERROR: Could not initialize socket engine: %s", strerror(errno));
27 ServerInstance->Logs->Log("SOCKET",DEFAULT, "ERROR: Your kernel probably does not have the proper features. This is a fatal error, exiting now.");
28 printf("ERROR: Could not initialize socket engine: %s\n", strerror(errno));
29 printf("ERROR: Your kernel probably does not have the proper features. This is a fatal error, exiting now.\n");
30 ServerInstance->Exit(EXIT_STATUS_SOCKETENGINE);
34 ref = new EventHandler* [GetMaxFds()];
35 events = new struct epoll_event[GetMaxFds()];
37 memset(ref, 0, GetMaxFds() * sizeof(EventHandler*));
40 EPollEngine::~EPollEngine()
42 this->Close(EngineHandle);
47 bool EPollEngine::AddFd(EventHandler* eh)
50 if ((fd < 0) || (fd > GetMaxFds() - 1))
52 ServerInstance->Logs->Log("SOCKET",DEBUG,"Out of range FD");
56 if (GetRemainingFds() <= 1)
62 struct epoll_event ev;
63 memset(&ev,0,sizeof(struct epoll_event));
64 eh->Readable() ? ev.events = EPOLLIN : ev.events = EPOLLOUT;
66 int i = epoll_ctl(EngineHandle, EPOLL_CTL_ADD, fd, &ev);
72 ServerInstance->Logs->Log("SOCKET",DEBUG,"New file descriptor: %d", fd);
79 void EPollEngine::WantWrite(EventHandler* eh)
81 /** Use oneshot so that the system removes the writeable
82 * status for us and saves us a call.
84 struct epoll_event ev;
85 memset(&ev,0,sizeof(struct epoll_event));
87 ev.data.fd = eh->GetFd();
88 epoll_ctl(EngineHandle, EPOLL_CTL_MOD, eh->GetFd(), &ev);
91 bool EPollEngine::DelFd(EventHandler* eh, bool force)
94 if ((fd < 0) || (fd > GetMaxFds() - 1))
97 struct epoll_event ev;
98 memset(&ev,0,sizeof(struct epoll_event));
99 eh->Readable() ? ev.events = EPOLLIN : ev.events = EPOLLOUT;
101 int i = epoll_ctl(EngineHandle, EPOLL_CTL_DEL, fd, &ev);
105 ServerInstance->Logs->Log("SOCKET",DEBUG,"Cant remove socket: %s", strerror(errno));
112 ServerInstance->Logs->Log("SOCKET",DEBUG,"Remove file descriptor: %d", fd);
116 int EPollEngine::GetMaxFds()
119 return MAX_DESCRIPTORS;
121 int max = ulimit(4, 0);
124 MAX_DESCRIPTORS = max;
129 ServerInstance->Logs->Log("SOCKET", DEFAULT, "ERROR: Can't determine maximum number of open sockets!");
130 printf("ERROR: Can't determine maximum number of open sockets!\n");
131 ServerInstance->Exit(EXIT_STATUS_SOCKETENGINE);
136 int EPollEngine::GetRemainingFds()
138 return GetMaxFds() - CurrentSetSize;
141 int EPollEngine::DispatchEvents()
145 int i = epoll_wait(EngineHandle, events, GetMaxFds() - 1, 1000);
149 for (int j = 0; j < i; j++)
151 if (events[j].events & EPOLLHUP)
154 if (ref[events[j].data.fd])
155 ref[events[j].data.fd]->HandleEvent(EVENT_ERROR, 0);
158 if (events[j].events & EPOLLERR)
161 /* Get error number */
162 if (getsockopt(events[j].data.fd, SOL_SOCKET, SO_ERROR, &errcode, &codesize) < 0)
164 if (ref[events[j].data.fd])
165 ref[events[j].data.fd]->HandleEvent(EVENT_ERROR, errcode);
168 if (events[j].events & EPOLLOUT)
171 struct epoll_event ev;
172 memset(&ev,0,sizeof(struct epoll_event));
174 ev.data.fd = events[j].data.fd;
175 epoll_ctl(EngineHandle, EPOLL_CTL_MOD, events[j].data.fd, &ev);
176 if (ref[events[j].data.fd])
177 ref[events[j].data.fd]->HandleEvent(EVENT_WRITE);
182 if (ref[events[j].data.fd])
183 ref[events[j].data.fd]->HandleEvent(EVENT_READ);
190 std::string EPollEngine::GetName()