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https://github.com/brl/mutter.git
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2f4a68c8c3
The order and way include macros were structured was chaotic, with no real common thread between files. Try to tidy up the mess with some common scheme, to make things look less messy.
85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/*
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* SECTION:restart-helper
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* @short_description: helper program during a restart
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*
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* To smoothly restart Mutter, we want to keep the composite
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* overlay window enabled during the restart. This is done by
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* spawning this program, which keeps a reference to the the composite
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* overlay window until Mutter picks it back up.
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*/
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/*
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* Copyright (C) 2014 Red Hat, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* 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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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <X11/Xlib.h>
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#include <X11/extensions/Xcomposite.h>
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int
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main (int argc,
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char **argv)
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{
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Display *display = XOpenDisplay (NULL);
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Window selection_window;
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XSetWindowAttributes xwa;
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unsigned long mask = 0;
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xwa.override_redirect = True;
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mask |= CWOverrideRedirect;
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XCompositeGetOverlayWindow (display, DefaultRootWindow (display));
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selection_window = XCreateWindow (display,
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DefaultRootWindow (display),
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-100, -100, 1, 1, 0,
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0,
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InputOnly,
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DefaultVisual (display, DefaultScreen (display)),
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mask, &xwa);
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XSetSelectionOwner (display,
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XInternAtom (display, "_MUTTER_RESTART_HELPER", False),
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selection_window,
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CurrentTime);
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/* Mutter looks for an (arbitrary) line printed to stdout to know that
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* we have started and have a reference to the COW. XSync() so that
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* everything is set on the X server before Mutter starts restarting.
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*/
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XSync (display, False);
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printf ("STARTED\n");
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fflush (stdout);
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while (True)
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{
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XEvent xev;
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XNextEvent (display, &xev);
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/* Mutter restarted and unset the selection to indicate that
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* it has a reference on the COW again */
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if (xev.xany.type == SelectionClear)
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return 0;
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}
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}
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