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 "socketengines/socketengine_poll.h"
20 PollEngine::PollEngine(InspIRCd* Instance) : SocketEngine(Instance)
22 // Poll requires no special setup (which is nice).
25 ref = new EventHandler* [GetMaxFds()];
26 events = new struct pollfd[GetMaxFds()];
28 memset(&events, 0, GetMaxFds() * sizeof(struct pollfd*));
31 PollEngine::~PollEngine()
33 // No destruction required, either.
38 bool PollEngine::AddFd(EventHandler* eh)
41 if ((fd < 0) || (fd > GetMaxFds() - 1))
43 ServerInstance->Logs->Log("SOCKET",DEBUG,"AddFd out of range: (fd: %d, max: %d)", fd, GetMaxFds());
47 if (GetRemainingFds() <= 1)
49 ServerInstance->Logs->Log("SOCKET",DEBUG,"No remaining FDs cannot add fd: %d", fd);
55 ServerInstance->Logs->Log("SOCKET",DEBUG,"Attempt to add duplicate fd: %d", fd);
63 events[fd].events = POLLIN;
67 events[fd].events = POLLOUT;
70 ServerInstance->Logs->Log("SOCKET", DEBUG,"New file descriptor: %d (%d)", fd, events[fd].events);
75 void PollEngine::WantWrite(EventHandler* eh)
77 events[eh->GetFd()].events = POLLIN | POLLOUT;
80 bool PollEngine::DelFd(EventHandler* eh, bool force)
83 if ((fd < 0) || (fd > MAX_DESCRIPTORS))
85 ServerInstance->Logs->Log("SOCKET", DEBUG, "DelFd out of range: (fd: %d, max: %d)", fd, GetMaxFds());
90 events[fd].events = 0;
95 ServerInstance->Logs->Log("SOCKET", DEBUG, "Remove file descriptor: %d", fd);
99 int PollEngine::GetMaxFds()
102 return MAX_DESCRIPTORS;
104 int max = ulimit(4, 0);
107 MAX_DESCRIPTORS = max;
112 ServerInstance->Logs->Log("SOCKET", DEFAULT, "ERROR: Can't determine maximum number of open sockets!");
113 printf("ERROR: Can't determine maximum number of open sockets!\n");
114 ServerInstance->Exit(EXIT_STATUS_SOCKETENGINE);
119 int PollEngine::GetRemainingFds()
121 return MAX_DESCRIPTORS - CurrentSetSize;
124 int PollEngine::DispatchEvents()
126 int i = poll(events, GetMaxFds() - 1, 1000);
128 socklen_t codesize = sizeof(int);
134 for (fd = 0; fd < GetMaxFds() - 1 && processed != i; fd++)
136 if (events[fd].revents)
139 if (events[fd].revents & POLLHUP)
142 ref[fd]->HandleEvent(EVENT_ERROR, 0);
146 if (events[fd].revents & POLLERR)
149 if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &errcode, &codesize) < 0)
152 ref[fd]->HandleEvent(EVENT_ERROR, errcode);
156 if (events[fd].revents & POLLOUT)
158 // Switch to wanting read again
159 // event handlers have to request to write again if they need it
160 events[fd].events = POLLIN;
164 ref[fd]->HandleEvent(EVENT_WRITE);
167 if (events[fd].revents & POLLIN)
170 ref[fd]->HandleEvent(EVENT_READ);
178 std::string PollEngine::GetName()