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context: Move X11 display policy under the context

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The context implementations already effectively dictate the policy, so
let them do it more directly instead of going indirectly via global
variables.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1861>
This commit is contained in:
Jonas Ådahl 2021-04-16 20:34:29 +02:00
parent e62f7e2910
commit 50ed027b6f
10 changed files with 84 additions and 154 deletions
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6
src/core/display.c
View File

@ -60,7 +60,6 @@
#include "core/events.h"
#include "core/frame.h"
#include "core/keybindings-private.h"
#include "core/main-private.h"
#include "core/meta-clipboard-manager.h"
#include "core/meta-workspace-manager-private.h"
#include "core/util-private.h"
@ -890,7 +889,10 @@ meta_display_new (MetaContext *context,
#ifdef HAVE_WAYLAND
if (meta_is_wayland_compositor ())
{
if (meta_get_x11_display_policy () == META_X11_DISPLAY_POLICY_MANDATORY)
MetaX11DisplayPolicy x11_display_policy;
x11_display_policy = meta_context_get_x11_display_policy (context);
if (x11_display_policy == META_X11_DISPLAY_POLICY_MANDATORY)
{
meta_display_init_x11 (display, NULL,
(GAsyncReadyCallback) on_x11_initialized,

32
src/core/main-private.h
View File

@ -1,32 +0,0 @@
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2016 Red Hat, Inc.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef META_MAIN_PRIVATE_H
#define META_MAIN_PRIVATE_H
#include "core/util-private.h"
#include "core/meta-private-enums.h"
META_EXPORT_TEST
MetaX11DisplayPolicy meta_get_x11_display_policy (void);
META_EXPORT_TEST
void meta_override_x11_display_policy (MetaX11DisplayPolicy x11_display_policy);
#endif /* META_MAIN_PRIVATE_H */

95
src/core/main.c
View File

@ -1,95 +0,0 @@
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* Mutter main() */
/*
* Copyright (C) 2001 Havoc Pennington
* Copyright (C) 2006 Elijah Newren
*
* 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, see <http://www.gnu.org/licenses/>.
*/
/**
* SECTION:main
* @title: Main
* @short_description: Program startup.
*
* Functions which parse the command-line arguments, create the display,
* kick everything off and then close down Mutter when it's time to go.
*
*
*
* Mutter - a boring window manager for the adult in you
*
* Many window managers are like Marshmallow Froot Loops; Mutter
* is like Frosted Flakes: it's still plain old corn, but dusted
* with some sugar.
*
* The best way to get a handle on how the whole system fits together
* is discussed in doc/code-overview.txt; if you're looking for functions
* to investigate, read main(), meta_display_open(), and event_callback().
*/
#include "config.h"
#include "meta/main.h"
#include "backends/x11/cm/meta-backend-x11-cm.h"
#include "core/meta-context-private.h"
#include "core/main-private.h"
#if defined(HAVE_NATIVE_BACKEND) && defined(HAVE_WAYLAND)
#include <systemd/sd-login.h>
#endif /* HAVE_WAYLAND && HAVE_NATIVE_BACKEND */
MetaContext *
meta_get_context_temporary (void);
static MetaX11DisplayPolicy x11_display_policy_override = -1;
void
meta_override_x11_display_policy (MetaX11DisplayPolicy x11_display_policy)
{
x11_display_policy_override = x11_display_policy;
}
MetaX11DisplayPolicy
meta_get_x11_display_policy (void)
{
MetaBackend *backend = meta_get_backend ();
if (META_IS_BACKEND_X11_CM (backend))
return META_X11_DISPLAY_POLICY_MANDATORY;
if (x11_display_policy_override != -1)
return x11_display_policy_override;
#ifdef HAVE_WAYLAND
if (meta_is_wayland_compositor ())
{
#ifdef HAVE_XWAYLAND_INITFD
g_autofree char *unit = NULL;
#endif
#ifdef HAVE_XWAYLAND_INITFD
if (sd_pid_get_user_unit (0, &unit) < 0)
return META_X11_DISPLAY_POLICY_MANDATORY;
else
return META_X11_DISPLAY_POLICY_ON_DEMAND;
#endif
}
#endif
return META_X11_DISPLAY_POLICY_MANDATORY;
}

38
src/core/meta-context-main.c
View File

@ -34,7 +34,6 @@
#include "backends/meta-monitor-manager-private.h"
#include "backends/meta-virtual-monitor.h"
#include "backends/x11/cm/meta-backend-x11-cm.h"
#include "core/main-private.h"
#include "meta/meta-backend.h"
#include "wayland/meta-wayland.h"
#include "x11/session.h"
@ -279,11 +278,6 @@ meta_context_main_configure (MetaContext *context,
if (!check_configuration (context_main, error))
return FALSE;
#ifdef HAVE_WAYLAND
if (context_main->options.no_x11)
meta_override_x11_display_policy (META_X11_DISPLAY_POLICY_DISABLED);
#endif
context_main->compositor_type = determine_compositor_type (context_main,
error);
if (context_main->compositor_type == -1)
@ -305,6 +299,36 @@ meta_context_main_get_compositor_type (MetaContext *context)
return context_main->compositor_type;
}
static MetaX11DisplayPolicy
meta_context_main_get_x11_display_policy (MetaContext *context)
{
MetaCompositorType compositor_type;
#ifdef HAVE_WAYLAND
MetaContextMain *context_main = META_CONTEXT_MAIN (context);
char *unit;
#endif
compositor_type = meta_context_get_compositor_type (context);
switch (compositor_type)
{
case META_COMPOSITOR_TYPE_X11:
return META_X11_DISPLAY_POLICY_MANDATORY;
case META_COMPOSITOR_TYPE_WAYLAND:
#ifdef HAVE_WAYLAND
if (context_main->options.no_x11)
return META_X11_DISPLAY_POLICY_DISABLED;
else if (sd_pid_get_user_unit (0, &unit) < 0)
return META_X11_DISPLAY_POLICY_MANDATORY;
else
return META_X11_DISPLAY_POLICY_ON_DEMAND;
#else /* HAVE_WAYLAND */
g_assert_not_reached ();
#endif /* HAVE_WAYLAND */
}
g_assert_not_reached ();
}
#ifdef HAVE_NATIVE_BACKEND
static gboolean
add_persistent_virtual_monitors (MetaContextMain *context_main,
@ -656,6 +680,8 @@ meta_context_main_class_init (MetaContextMainClass *klass)
context_class->configure = meta_context_main_configure;
context_class->get_compositor_type = meta_context_main_get_compositor_type;
context_class->get_x11_display_policy =
meta_context_main_get_x11_display_policy;
context_class->setup = meta_context_main_setup;
context_class->create_backend = meta_context_main_create_backend;
context_class->notify_ready = meta_context_main_notify_ready;

5
src/core/meta-context-private.h
View File

@ -21,6 +21,7 @@
#ifndef META_CONTEXT_PRIVATE_H
#define META_CONTEXT_PRIVATE_H
#include "core/meta-private-enums.h"
#include "meta/meta-backend.h"
#include "meta/meta-context.h"
#include "wayland/meta-wayland-types.h"
@ -36,6 +37,8 @@ struct _MetaContextClass
MetaCompositorType (* get_compositor_type) (MetaContext *context);
MetaX11DisplayPolicy (* get_x11_display_policy) (MetaContext *context);
gboolean (* setup) (MetaContext *context,
GError **error);
@ -51,4 +54,6 @@ const char * meta_context_get_gnome_wm_keybindings (MetaContext *context);
MetaWaylandCompositor * meta_context_get_wayland_compositor (MetaContext *context);
MetaX11DisplayPolicy meta_context_get_x11_display_policy (MetaContext *context);
#endif /* META_CONTEXT_PRIVATE_H */

6
src/core/meta-context.c
View File

@ -212,6 +212,12 @@ meta_context_get_compositor_type (MetaContext *context)
return META_CONTEXT_GET_CLASS (context)->get_compositor_type (context);
}
MetaX11DisplayPolicy
meta_context_get_x11_display_policy (MetaContext *context)
{
return META_CONTEXT_GET_CLASS (context)->get_x11_display_policy (context);
}
static gboolean
meta_context_real_configure (MetaContext *context,
int *argc,

2
src/meson.build
View File

@ -358,8 +358,6 @@ mutter_sources = [
'core/frame.h',
'core/keybindings.c',
'core/keybindings-private.h',
'core/main-private.h',
'core/main.c',
'core/meta-accel-parse.c',
'core/meta-accel-parse.h',
'core/meta-anonymous-file.c',

19
src/tests/meta-context-test.c
View File

@ -25,7 +25,6 @@
#include <glib.h>
#include <gio/gio.h>
#include "core/main-private.h"
#include "tests/meta-backend-test.h"
#include "tests/test-utils.h"
#include "wayland/meta-wayland.h"
@ -92,6 +91,17 @@ meta_context_test_get_compositor_type (MetaContext *context)
return META_COMPOSITOR_TYPE_WAYLAND;
}
static MetaX11DisplayPolicy
meta_context_test_get_x11_display_policy (MetaContext *context)
{
MetaContextTest *context_test = META_CONTEXT_TEST (context);
if (context_test->flags & META_CONTEXT_TEST_FLAG_NO_X11)
return META_X11_DISPLAY_POLICY_DISABLED;
else
return META_X11_DISPLAY_POLICY_ON_DEMAND;
}
static gboolean
meta_context_test_setup (MetaContext *context,
GError **error)
@ -241,11 +251,6 @@ meta_create_test_context (MetaContextTestType type,
context_test->type = type;
context_test->flags = flags;
/* NOTE: This will be removed in a follow up commit, but is needed
* until the override method is replaced. */
if (flags & META_CONTEXT_TEST_FLAG_NO_X11)
meta_override_x11_display_policy (META_X11_DISPLAY_POLICY_DISABLED);
return META_CONTEXT (context_test);
}
@ -256,6 +261,8 @@ meta_context_test_class_init (MetaContextTestClass *klass)
context_class->configure = meta_context_test_configure;
context_class->get_compositor_type = meta_context_test_get_compositor_type;
context_class->get_x11_display_policy =
meta_context_test_get_x11_display_policy;
context_class->setup = meta_context_test_setup;
context_class->create_backend = meta_context_test_create_backend;
context_class->notify_ready = meta_context_test_notify_ready;

8
src/wayland/meta-wayland.c
View File

@ -31,7 +31,6 @@
#include "clutter/clutter.h"
#include "cogl/cogl-egl.h"
#include "compositor/meta-surface-actor-wayland.h"
#include "core/main-private.h"
#include "core/meta-context-private.h"
#include "wayland/meta-wayland-activation.h"
#include "wayland/meta-wayland-buffer.h"
@ -518,6 +517,7 @@ meta_wayland_compositor_new (MetaContext *context)
ClutterActor *stage = meta_backend_get_stage (backend);
MetaWaylandCompositor *compositor;
GSource *wayland_event_source;
MetaX11DisplayPolicy x11_display_policy;
compositor = g_object_new (META_TYPE_WAYLAND_COMPOSITOR, NULL);
compositor->context = context;
@ -577,7 +577,9 @@ meta_wayland_compositor_new (MetaContext *context)
meta_wayland_eglstream_controller_init (compositor);
#endif
if (meta_get_x11_display_policy () != META_X11_DISPLAY_POLICY_DISABLED)
x11_display_policy =
meta_context_get_x11_display_policy (compositor->context);
if (x11_display_policy != META_X11_DISPLAY_POLICY_DISABLED)
{
g_autoptr (GError) error = NULL;
@ -609,7 +611,7 @@ meta_wayland_compositor_new (MetaContext *context)
g_message ("Using Wayland display name '%s'", compositor->display_name);
if (meta_get_x11_display_policy () != META_X11_DISPLAY_POLICY_DISABLED)
if (x11_display_policy != META_X11_DISPLAY_POLICY_DISABLED)
{
set_gnome_env ("GNOME_SETUP_DISPLAY", compositor->xwayland_manager.private_connection.name);
set_gnome_env ("DISPLAY", compositor->xwayland_manager.public_connection.name);

27
src/wayland/meta-xwayland.c
View File

@ -47,7 +47,6 @@
#include "backends/meta-monitor-manager-private.h"
#include "backends/meta-settings-private.h"
#include "core/main-private.h"
#include "meta/main.h"
#include "meta/meta-backend.h"
#include "wayland/meta-xwayland-surface.h"
@ -536,10 +535,14 @@ xserver_died (GObject *source,
GAsyncResult *result,
gpointer user_data)
{
MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
GSubprocess *proc = G_SUBPROCESS (source);
MetaDisplay *display = meta_get_display ();
g_autoptr (GError) error = NULL;
MetaX11DisplayPolicy x11_display_policy;
x11_display_policy =
meta_context_get_x11_display_policy (compositor->context);
if (!g_subprocess_wait_finish (proc, result, &error))
{
if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
@ -549,19 +552,18 @@ xserver_died (GObject *source,
}
else if (!g_subprocess_get_successful (proc))
{
if (meta_get_x11_display_policy () == META_X11_DISPLAY_POLICY_MANDATORY)
if (x11_display_policy == META_X11_DISPLAY_POLICY_MANDATORY)
g_warning ("X Wayland crashed; exiting");
else
g_warning ("X Wayland crashed; attempting to recover");
}
if (meta_get_x11_display_policy () == META_X11_DISPLAY_POLICY_MANDATORY)
if (x11_display_policy == META_X11_DISPLAY_POLICY_MANDATORY)
{
meta_exit (META_EXIT_ERROR);
}
else if (meta_get_x11_display_policy () == META_X11_DISPLAY_POLICY_ON_DEMAND)
else if (x11_display_policy == META_X11_DISPLAY_POLICY_ON_DEMAND)
{
MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
g_autoptr (GError) error = NULL;
if (display->x11_display)
@ -609,9 +611,14 @@ shutdown_xwayland_cb (gpointer data)
static int
x_io_error (Display *display)
{
MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
MetaX11DisplayPolicy x11_display_policy;
g_warning ("Connection to xwayland lost");
if (meta_get_x11_display_policy () == META_X11_DISPLAY_POLICY_MANDATORY)
x11_display_policy =
meta_context_get_x11_display_policy (compositor->context);
if (x11_display_policy == META_X11_DISPLAY_POLICY_MANDATORY)
meta_exit (META_EXIT_ERROR);
return 0;
@ -1143,6 +1150,7 @@ meta_xwayland_init (MetaXWaylandManager *manager,
struct wl_display *wl_display,
GError **error)
{
MetaContext *context = compositor->context;
MetaX11DisplayPolicy policy;
int display = 0;
@ -1186,7 +1194,7 @@ meta_xwayland_init (MetaXWaylandManager *manager,
manager->private_connection.name);
manager->wayland_display = wl_display;
policy = meta_get_x11_display_policy ();
policy = meta_context_get_x11_display_policy (context);
if (policy == META_X11_DISPLAY_POLICY_ON_DEMAND)
{
@ -1253,6 +1261,7 @@ meta_xwayland_complete_init (MetaDisplay *display,
{
MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
MetaXWaylandManager *manager = &compositor->xwayland_manager;
MetaX11DisplayPolicy x11_display_policy;
/* We install an X IO error handler in addition to the child watch,
because after Xlib connects our child watch may not be called soon
@ -1270,7 +1279,9 @@ meta_xwayland_complete_init (MetaDisplay *display,
add_local_user_to_xhost (xdisplay);
meta_xwayland_init_xrandr (manager, xdisplay);
if (meta_get_x11_display_policy () == META_X11_DISPLAY_POLICY_ON_DEMAND)
x11_display_policy =
meta_context_get_x11_display_policy (compositor->context);
if (x11_display_policy == META_X11_DISPLAY_POLICY_ON_DEMAND)
{
meta_xwayland_stop_xserver_timeout (manager);
g_signal_connect (meta_get_display (), "window-created",