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backend: add signals for reporting suspend and resume

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This commit adds "suspending" and "resuming" signals
to MetaBackend.

It's preliminary work needed for tracking when to purge
and recreate all textures (needed by nvidia).
This commit is contained in:
Ray Strode 2019-01-10 10:47:19 -05:00
parent 76c34858d1
commit 4ac2899576
1 changed files with 87 additions and 12 deletions
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87
src/backends/meta-backend.c
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@ -26,6 +26,8 @@
#include <stdlib.h>
#include <gio/gunixfdlist.h>
#include <clutter/clutter-mutter.h>
#include <meta/meta-backend.h>
#include <meta/main.h>
@ -60,7 +62,8 @@ enum
KEYMAP_CHANGED,
KEYMAP_LAYOUT_GROUP_CHANGED,
LAST_DEVICE_CHANGED,
SUSPENDING,
RESUMING,
N_SIGNALS
};
@ -550,6 +553,20 @@ meta_backend_class_init (MetaBackendClass *klass)
0,
NULL, NULL, NULL,
G_TYPE_NONE, 1, G_TYPE_INT);
signals[SUSPENDING] =
g_signal_new ("suspending",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 0);
signals[RESUMING] =
g_signal_new ("resuming",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 0);
mutter_stage_views = g_getenv ("MUTTER_STAGE_VIEWS");
stage_views_disabled = g_strcmp0 (mutter_stage_views, "0") == 0;
@ -584,15 +601,66 @@ lid_is_closed_changed_cb (UpClient *client,
meta_idle_monitor_reset_idletime (meta_idle_monitor_get_core ());
}
static void
inhibit_sleep (MetaBackend *backend)
{
MetaBackendPrivate *priv = meta_backend_get_instance_private (backend);
g_autoptr (GVariant) fd_variant = NULL;
g_autoptr (GUnixFDList) fd_list = NULL;
g_autoptr (GError) error = NULL;
int handle, fd;
if (priv->inhibit_sleep_fd >= 0)
return;
if (!login1_manager_call_inhibit_sync (priv->logind_proxy,
"sleep",
"Display Server",
"Prepare for suspend",
"delay",
NULL,
&fd_variant,
&fd_list,
priv->cancellable,
&error))
{
g_warning ("Failed to inhibit sleep: %s", error->message);
return;
}
handle = g_variant_get_handle (fd_variant);
fd = g_unix_fd_list_get (fd_list, handle, &error);
if (fd < 0)
{
g_warning ("Failed to fetch sleep inhibitor fd: %s", error->message);
return;
}
priv->inhibit_sleep_fd = fd;
}
static void
uninhibit_sleep (MetaBackend *backend)
{
MetaBackendPrivate *priv = meta_backend_get_instance_private (backend);
close (priv->inhibit_sleep_fd);
priv->inhibit_sleep_fd = -1;
}
static void
prepare_for_sleep_cb (MetaBackend *backend,
gboolean suspending)
{
gboolean suspending;
g_variant_get (parameters, "(b)", &suspending);
if (suspending)
if (suspending) {
g_signal_emit (backend, signals[SUSPENDING], 0);
uninhibit_sleep (backend);
return;
}
inhibit_sleep (backend);
g_signal_emit (backend, signals[RESUMING], 0);
meta_idle_monitor_reset_idletime (meta_idle_monitor_get_core ());
}
@ -619,6 +687,7 @@ system_bus_gotten_cb (GObject *object,
GAsyncResult *res,
gpointer user_data)
{
MetaBackend *backend = META_BACKEND (user_data);
MetaBackendPrivate *priv;
g_autoptr (GError) error = NULL;
GDBusConnection *bus;
@ -630,15 +699,21 @@ system_bus_gotten_cb (GObject *object,
priv = meta_backend_get_instance_private (user_data);
priv->system_bus = bus;
priv->logind_proxy = get_logind_proxy (priv->cancellable, &error);
priv->inhibit_sleep_fd = -1;
if (!priv->logind_proxy)
{
g_warning ("Failed to get logind proxy: %s", error->message);
}
else
{
inhibit_sleep (backend);
g_signal_connect_object (priv->logind_proxy,
"prepare-for-sleep",
G_CALLBACK (prepare_for_sleep_cb),
user_data,
G_CONNECT_SWAPPED);
}
}
static gboolean