author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 04 Oct 2010 02:56:42 +0300 | |
changeset 68 | ff3fc7722556 |
parent 18 | 47c74d1534e1 |
permissions | -rw-r--r-- |
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/* gpoll.h - poll(2) support |
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* Copyright (C) 2008 Red Hat, Inc. |
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* Portions copyright (c) 2009 Nokia Corporation. All rights reserved. |
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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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|
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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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typedef gint (*GPollFunc) (GPollFD *ufds, |
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guint nfsd, |
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gint timeout_); |
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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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IMPORT_C 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__ */ |