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)
23 EngineHandle = epoll_create(GetMaxFds());
25 if (EngineHandle == -1)
27 ServerInstance->Logs->Log("SOCKET",DEFAULT, "ERROR: Could not initialize socket engine: %s", strerror(errno));
28 ServerInstance->Logs->Log("SOCKET",DEFAULT, "ERROR: Your kernel probably does not have the proper features. This is a fatal error, exiting now.");
29 printf("ERROR: Could not initialize socket engine: %s\n", strerror(errno));
30 printf("ERROR: Your kernel probably does not have the proper features. This is a fatal error, exiting now.\n");
31 ServerInstance->Exit(EXIT_STATUS_SOCKETENGINE);
35 ref = new EventHandler* [GetMaxFds()];
36 events = new struct epoll_event[GetMaxFds()];
38 memset(ref, 0, GetMaxFds() * sizeof(EventHandler*));
41 EPollEngine::~EPollEngine()
43 this->Close(EngineHandle);
48 bool EPollEngine::AddFd(EventHandler* eh)
51 if ((fd < 0) || (fd > GetMaxFds() - 1))
53 ServerInstance->Logs->Log("SOCKET",DEBUG,"Out of range FD");
57 if (GetRemainingFds() <= 1)
63 struct epoll_event ev;
64 memset(&ev,0,sizeof(struct epoll_event));
65 eh->Readable() ? ev.events = EPOLLIN : ev.events = EPOLLOUT;
67 int i = epoll_ctl(EngineHandle, EPOLL_CTL_ADD, fd, &ev);
73 ServerInstance->Logs->Log("SOCKET",DEBUG,"New file descriptor: %d", fd);
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 memset(&ev,0,sizeof(struct epoll_event));
88 ev.data.fd = eh->GetFd();
89 epoll_ctl(EngineHandle, EPOLL_CTL_MOD, eh->GetFd(), &ev);
92 bool EPollEngine::DelFd(EventHandler* eh, bool force)
95 if ((fd < 0) || (fd > GetMaxFds() - 1))
98 struct epoll_event ev;
99 memset(&ev,0,sizeof(struct epoll_event));
100 eh->Readable() ? ev.events = EPOLLIN : ev.events = EPOLLOUT;
102 int i = epoll_ctl(EngineHandle, EPOLL_CTL_DEL, fd, &ev);
106 ServerInstance->Logs->Log("SOCKET",DEBUG,"Cant remove socket: %s", strerror(errno));
113 ServerInstance->Logs->Log("SOCKET",DEBUG,"Remove file descriptor: %d", fd);
117 int EPollEngine::GetMaxFds()
120 return MAX_DESCRIPTORS;
122 int max = ulimit(4, 0);
125 MAX_DESCRIPTORS = max;
130 ServerInstance->Logs->Log("SOCKET", DEFAULT, "ERROR: Can't determine maximum number of open sockets!");
131 printf("ERROR: Can't determine maximum number of open sockets!\n");
132 ServerInstance->Exit(EXIT_STATUS_SOCKETENGINE);
137 int EPollEngine::GetRemainingFds()
139 return GetMaxFds() - CurrentSetSize;
142 int EPollEngine::DispatchEvents()
146 int i = epoll_wait(EngineHandle, events, GetMaxFds() - 1, 1000);
150 for (int j = 0; j < i; j++)
152 if (events[j].events & EPOLLHUP)
155 if (ref[events[j].data.fd])
156 ref[events[j].data.fd]->HandleEvent(EVENT_ERROR, 0);
159 if (events[j].events & EPOLLERR)
162 /* Get error number */
163 if (getsockopt(events[j].data.fd, SOL_SOCKET, SO_ERROR, &errcode, &codesize) < 0)
165 if (ref[events[j].data.fd])
166 ref[events[j].data.fd]->HandleEvent(EVENT_ERROR, errcode);
169 if (events[j].events & EPOLLOUT)
172 struct epoll_event ev;
173 memset(&ev,0,sizeof(struct epoll_event));
175 ev.data.fd = events[j].data.fd;
176 epoll_ctl(EngineHandle, EPOLL_CTL_MOD, events[j].data.fd, &ev);
177 if (ref[events[j].data.fd])
178 ref[events[j].data.fd]->HandleEvent(EVENT_WRITE);
183 if (ref[events[j].data.fd])
184 ref[events[j].data.fd]->HandleEvent(EVENT_READ);
191 std::string EPollEngine::GetName()