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/*
* Copyright 2003-2017 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "SocketMonitor.hxx"
#include "Loop.hxx"
#include "system/fd_util.h"
#include <assert.h>
#ifdef WIN32
#include <winsock2.h>
#else
#include <sys/socket.h>
#endif
void
SocketMonitor::Dispatch(unsigned flags)
{
flags &= GetScheduledFlags();
if (flags != 0 && !OnSocketReady(flags) && IsDefined())
Cancel();
}
SocketMonitor::~SocketMonitor()
{
if (IsDefined())
Cancel();
}
void
SocketMonitor::Open(SocketDescriptor _fd)
{
assert(!fd.IsDefined());
assert(_fd.IsDefined());
fd = _fd;
}
SocketDescriptor
SocketMonitor::Steal()
{
assert(IsDefined());
Cancel();
return std::exchange(fd, SocketDescriptor::Undefined());
}
void
SocketMonitor::Abandon()
{
assert(IsDefined());
loop.Abandon(std::exchange(fd, SocketDescriptor::Undefined()).Get(),
*this);
}
void
SocketMonitor::Close()
{
Steal().Close();
}
void
SocketMonitor::Schedule(unsigned flags)
{
assert(IsDefined());
if (flags == GetScheduledFlags())
return;
if (scheduled_flags == 0)
loop.AddFD(fd.Get(), flags, *this);
else if (flags == 0)
loop.RemoveFD(fd.Get(), *this);
else
loop.ModifyFD(fd.Get(), flags, *this);
scheduled_flags = flags;
}
SocketMonitor::ssize_t
SocketMonitor::Read(void *data, size_t length)
{
assert(IsDefined());
int flags = 0;
#ifdef MSG_DONTWAIT
flags |= MSG_DONTWAIT;
#endif
return recv(Get().Get(), (char *)data, length, flags);
}
SocketMonitor::ssize_t
SocketMonitor::Write(const void *data, size_t length)
{
assert(IsDefined());
int flags = 0;
#ifdef MSG_NOSIGNAL
flags |= MSG_NOSIGNAL;
#endif
#ifdef MSG_DONTWAIT
flags |= MSG_DONTWAIT;
#endif
return send(Get().Get(), (const char *)data, length, flags);
}
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