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diff --git a/glib/glib/gpoll.h b/glib/glib/gpoll.h
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+/* gpoll.h - poll(2) support
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#if !defined (__GLIB_H_INSIDE__) && !defined (__G_MAIN_H__) && !defined (GLIB_COMPILATION)
+#error "Only <glib.h> can be included directly."
+#endif
+
+#ifndef __G_POLL_H__
+#define __G_POLL_H__
+
+#include <glib/gtypes.h>
+
+G_BEGIN_DECLS
+
+/* Any definitions using GPollFD or GPollFunc are primarily
+ * for Unix and not guaranteed to be the compatible on all
+ * operating systems on which GLib runs. Right now, the
+ * GLib does use these functions on Win32 as well, but interprets
+ * them in a fairly different way than on Unix. If you use
+ * these definitions, you are should be prepared to recode
+ * for different operating systems.
+ *
+ * Note that on systems with a working poll(2), that function is used
+ * in place of g_poll(). Thus g_poll() must have the same signature as
+ * poll(), meaning GPollFD must have the same layout as struct pollfd.
+ *
+ *
+ * On Win32, the fd in a GPollFD should be Win32 HANDLE (*not* a file
+ * descriptor as provided by the C runtime) that can be used by
+ * MsgWaitForMultipleObjects. This does *not* include file handles
+ * from CreateFile, SOCKETs, nor pipe handles. (But you can use
+ * WSAEventSelect to signal events when a SOCKET is readable).
+ *
+ * On Win32, fd can also be the special value G_WIN32_MSG_HANDLE to
+ * indicate polling for messages.
+ *
+ * But note that G_WIN32_MSG_HANDLE GPollFDs should not be used by GDK
+ * (GTK) programs, as GDK itself wants to read messages and convert them
+ * to GDK events.
+ *
+ * So, unless you really know what you are doing, it's best not to try
+ * to use the main loop polling stuff for your own needs on
+ * Windows.
+ */
+typedef struct _GPollFD GPollFD;
+
+/**
+ * GPollFunc:
+ * @ufds: an array of #GPollFD elements
+ * @nfsd: the number of elements in @ufds
+ * @timeout_: the maximum time to wait for an event of the file descriptors.
+ *     A negative value indicates an infinite timeout.
+ *
+ * Specifies the type of function passed to g_main_context_set_poll_func().
+ * The semantics of the function should match those of the poll() system call.
+ *
+ * Returns: the number of #GPollFD elements which have events or errors
+ *     reported, or -1 if an error occurred.
+ */
+typedef gint    (*GPollFunc)    (GPollFD *ufds,
+                                 guint    nfsd,
+                                 gint     timeout_);
+
+/**
+ * GPollFD:
+ * @fd: the file descriptor to poll (or a <type>HANDLE</type> on Win32)
+ * @events: a bitwise combination from #GIOCondition, specifying which
+ *     events should be polled for. Typically for reading from a file
+ *     descriptor you would use %G_IO_IN | %G_IO_HUP | %G_IO_ERR, and
+ *     for writing you would use %G_IO_OUT | %G_IO_ERR.
+ * @revents: a bitwise combination of flags from #GIOCondition, returned
+ *     from the poll() function to indicate which events occurred.
+ *
+ * Represents a file descriptor, which events to poll for, and which events
+ * occurred.
+ */
+struct _GPollFD
+{
+#if defined (G_OS_WIN32) && GLIB_SIZEOF_VOID_P == 8
+  gint64	fd;
+#else
+  gint		fd;
+#endif
+  gushort 	events;
+  gushort 	revents;
+};
+
+#ifdef G_OS_WIN32
+#if GLIB_SIZEOF_VOID_P == 8
+#define G_POLLFD_FORMAT "%#I64x"
+#else
+#define G_POLLFD_FORMAT "%#x"
+#endif
+#else
+#define G_POLLFD_FORMAT "%d"
+#endif
+
+gint g_poll (GPollFD *fds,
+	     guint    nfds,
+	     gint     timeout);
+
+G_END_DECLS
+
+#endif /* __G_POLL_H__ */