mirror of git://git.acid.vegas/anope.git
122 lines
2.6 KiB
C++
122 lines
2.6 KiB
C++
/*
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*
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* (C) 2003-2022 Anope Team
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* Contact us at team@anope.org
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*
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* Please read COPYING and README for further details.
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*
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* Based on the original code of Epona by Lara.
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* Based on the original code of Services by Andy Church.
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*/
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#include "services.h"
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#include "anope.h"
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#include "sockets.h"
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#include "socketengine.h"
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#include "config.h"
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#include <sys/epoll.h>
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#include <ulimit.h>
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#include <errno.h>
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static int EngineHandle;
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static std::vector<epoll_event> events;
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void SocketEngine::Init()
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{
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EngineHandle = epoll_create(4);
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if (EngineHandle == -1)
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throw SocketException("Could not initialize epoll socket engine: " + Anope::LastError());
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events.resize(DefaultSize);
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}
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void SocketEngine::Shutdown()
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{
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while (!Sockets.empty())
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delete Sockets.begin()->second;
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}
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void SocketEngine::Change(Socket *s, bool set, SocketFlag flag)
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{
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if (set == s->flags[flag])
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return;
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bool before_registered = s->flags[SF_READABLE] || s->flags[SF_WRITABLE];
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s->flags[flag] = set;
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bool now_registered = s->flags[SF_READABLE] || s->flags[SF_WRITABLE];
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epoll_event ev;
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memset(&ev, 0, sizeof(ev));
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ev.events = (s->flags[SF_READABLE] ? EPOLLIN : 0) | (s->flags[SF_WRITABLE] ? EPOLLOUT : 0);
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ev.data.fd = s->GetFD();
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int mod;
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if (!before_registered && now_registered)
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mod = EPOLL_CTL_ADD;
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else if (before_registered && !now_registered)
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mod = EPOLL_CTL_DEL;
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else if (before_registered && now_registered)
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mod = EPOLL_CTL_MOD;
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else
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return;
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if (epoll_ctl(EngineHandle, mod, ev.data.fd, &ev) == -1)
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throw SocketException("Unable to epoll_ctl() fd " + stringify(ev.data.fd) + " to epoll: " + Anope::LastError());
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}
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void SocketEngine::Process()
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{
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if (Sockets.size() > events.size())
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events.resize(events.size() * 2);
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int total = epoll_wait(EngineHandle, &events.front(), events.size(), Config->ReadTimeout * 1000);
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Anope::CurTime = time(NULL);
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/* EINTR can be given if the read timeout expires */
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if (total == -1)
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{
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if (errno != EINTR)
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Log() << "SockEngine::Process(): error: " << Anope::LastError();
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return;
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}
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for (int i = 0; i < total; ++i)
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{
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epoll_event &ev = events[i];
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std::map<int, Socket *>::iterator it = Sockets.find(ev.data.fd);
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if (it == Sockets.end())
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continue;
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Socket *s = it->second;
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if (ev.events & (EPOLLHUP | EPOLLERR))
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{
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s->ProcessError();
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delete s;
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continue;
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}
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if (!s->Process())
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{
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if (s->flags[SF_DEAD])
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delete s;
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continue;
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}
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if ((ev.events & EPOLLIN) && !s->ProcessRead())
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s->flags[SF_DEAD] = true;
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if ((ev.events & EPOLLOUT) && !s->ProcessWrite())
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s->flags[SF_DEAD] = true;
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if (s->flags[SF_DEAD])
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delete s;
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}
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}
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