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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2013-2015 Attila Molnar <attilamolnar@hush.com>
* Copyright (C) 2012 Robby <robby@chatbelgie.be>
* Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2008, 2010 Craig Edwards <brain@inspircd.org>
*
* This file is part of InspIRCd. InspIRCd is free software: you can
* redistribute it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "inspircd.h"
#include "threadsocket.h"
#if __has_include(<sys/eventfd.h>)
#include <sys/eventfd.h>
class ThreadSignalSocket final
: public EventHandler
{
SocketThread* parent;
public:
ThreadSignalSocket(SocketThread* p, int newfd) : parent(p)
{
SetFd(newfd);
SocketEngine::AddFd(this, FD_WANT_FAST_READ | FD_WANT_NO_WRITE);
}
~ThreadSignalSocket() override
{
SocketEngine::Close(this);
}
void Notify()
{
eventfd_write(fd, 1);
}
void OnEventHandlerRead() override
{
eventfd_t dummy;
eventfd_read(fd, &dummy);
parent->OnNotify();
}
void OnEventHandlerWrite() override
{
ServerInstance->GlobalCulls.AddItem(this);
}
void OnEventHandlerError(int errcode) override
{
ThreadSignalSocket::OnEventHandlerWrite();
}
};
SocketThread::SocketThread()
{
socket = NULL;
int fd = eventfd(0, EFD_NONBLOCK);
if (fd < 0)
throw CoreException("Could not create pipe " + std::string(strerror(errno)));
socket = new ThreadSignalSocket(this, fd);
}
#else
# ifdef _WIN32
# define pipe(fd) _pipe(fd, 1, 0)
# endif
class ThreadSignalSocket final
: public EventHandler
{
SocketThread* parent;
int send_fd;
public:
ThreadSignalSocket(SocketThread* p, int recvfd, int sendfd) :
parent(p), send_fd(sendfd)
{
SetFd(recvfd);
SocketEngine::NonBlocking(fd);
SocketEngine::AddFd(this, FD_WANT_FAST_READ | FD_WANT_NO_WRITE);
}
~ThreadSignalSocket()
{
close(send_fd);
SocketEngine::Close(this);
}
void Notify()
{
static constexpr char dummy = '*';
write(send_fd, &dummy, 1);
}
void OnEventHandlerRead() override
{
char dummy[128];
read(fd, dummy, 128);
parent->OnNotify();
}
void OnEventHandlerWrite() override
{
ServerInstance->GlobalCulls.AddItem(this);
}
void OnEventHandlerError(int errcode) override
{
ThreadSignalSocket::OnEventHandlerWrite();
}
};
SocketThread::SocketThread()
{
socket = NULL;
int fds[2];
if (pipe(fds))
throw CoreException("Could not create pipe " + std::string(strerror(errno)));
socket = new ThreadSignalSocket(this, fds[0], fds[1]);
}
#endif
void SocketThread::NotifyParent()
{
socket->Notify();
}
SocketThread::~SocketThread()
{
if (socket)
{
socket->Cull();
delete socket;
}
}
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