Stephan Sundermann
e653ac87a2
x86 might not work due to misconfiguration because I could not test it since acinerella is broken in x86 currenty. Gstreamer video support is yet to follow. Please report back any bugs you experience. To compile you will need Visual C++, I hope all files are included
121 lines
4.0 KiB
C
121 lines
4.0 KiB
C
/* gpoll.h - poll(2) support
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* Copyright (C) 2008 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#if !defined (__GLIB_H_INSIDE__) && !defined (__G_MAIN_H__) && !defined (GLIB_COMPILATION)
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#error "Only <glib.h> can be included directly."
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#endif
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#ifndef __G_POLL_H__
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#define __G_POLL_H__
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#include <glib/gtypes.h>
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G_BEGIN_DECLS
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/* Any definitions using GPollFD or GPollFunc are primarily
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* for Unix and not guaranteed to be the compatible on all
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* operating systems on which GLib runs. Right now, the
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* GLib does use these functions on Win32 as well, but interprets
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* them in a fairly different way than on Unix. If you use
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* these definitions, you are should be prepared to recode
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* for different operating systems.
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*
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* Note that on systems with a working poll(2), that function is used
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* in place of g_poll(). Thus g_poll() must have the same signature as
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* poll(), meaning GPollFD must have the same layout as struct pollfd.
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*
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*
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* On Win32, the fd in a GPollFD should be Win32 HANDLE (*not* a file
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* descriptor as provided by the C runtime) that can be used by
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* MsgWaitForMultipleObjects. This does *not* include file handles
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* from CreateFile, SOCKETs, nor pipe handles. (But you can use
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* WSAEventSelect to signal events when a SOCKET is readable).
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*
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* On Win32, fd can also be the special value G_WIN32_MSG_HANDLE to
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* indicate polling for messages.
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*
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* But note that G_WIN32_MSG_HANDLE GPollFDs should not be used by GDK
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* (GTK) programs, as GDK itself wants to read messages and convert them
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* to GDK events.
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*
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* So, unless you really know what you are doing, it's best not to try
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* to use the main loop polling stuff for your own needs on
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* Windows.
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*/
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typedef struct _GPollFD GPollFD;
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/**
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* GPollFunc:
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* @ufds: an array of #GPollFD elements
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* @nfsd: the number of elements in @ufds
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* @timeout_: the maximum time to wait for an event of the file descriptors.
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* A negative value indicates an infinite timeout.
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*
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* Specifies the type of function passed to g_main_context_set_poll_func().
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* The semantics of the function should match those of the poll() system call.
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*
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* Returns: the number of #GPollFD elements which have events or errors
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* reported, or -1 if an error occurred.
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*/
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typedef gint (*GPollFunc) (GPollFD *ufds,
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guint nfsd,
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gint timeout_);
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/**
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* GPollFD:
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* @fd: the file descriptor to poll (or a <type>HANDLE</type> on Win32)
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* @events: a bitwise combination from #GIOCondition, specifying which
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* events should be polled for. Typically for reading from a file
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* descriptor you would use %G_IO_IN | %G_IO_HUP | %G_IO_ERR, and
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* for writing you would use %G_IO_OUT | %G_IO_ERR.
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* @revents: a bitwise combination of flags from #GIOCondition, returned
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* from the poll() function to indicate which events occurred.
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*
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* Represents a file descriptor, which events to poll for, and which events
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* occurred.
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*/
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struct _GPollFD
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{
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#if defined (G_OS_WIN32) && GLIB_SIZEOF_VOID_P == 8
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gint64 fd;
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#else
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gint fd;
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#endif
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gushort events;
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gushort revents;
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};
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#ifdef G_OS_WIN32
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#if GLIB_SIZEOF_VOID_P == 8
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#define G_POLLFD_FORMAT "%#I64x"
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#else
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#define G_POLLFD_FORMAT "%#x"
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#endif
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#else
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#define G_POLLFD_FORMAT "%d"
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#endif
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gint g_poll (GPollFD *fds,
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guint nfds,
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gint timeout);
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G_END_DECLS
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#endif /* __G_POLL_H__ */
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