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backends/native: Ignore udev events while we're paused

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When the native backend is paused we still process the udev events
even though this isn't needed and may just cause unneeded events to be
triggered afterwards.

Since we'll resume with full changes on such event, we can just block
the signal hander when paused and restore it afterwards.

As per this we can cleanup also a bit the device adding signal handling
given that now we don't have to disconnect/reconnect it again.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1964>
This commit is contained in:
Marco Trevisan (Treviño) 2021-03-22 17:44:11 +01:00 committed by Marge Bot
parent 9cb35e2c80
commit cbfb59b828
3 changed files with 21 additions and 30 deletions
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35
src/backends/native/meta-backend-native.c
View File

@ -87,8 +87,6 @@ struct _MetaBackendNative
MetaKms *kms;
gboolean is_headless;
gulong udev_device_added_handler_id;
};
static GInitableIface *initable_parent_iface;
@ -100,20 +98,11 @@ G_DEFINE_TYPE_WITH_CODE (MetaBackendNative, meta_backend_native, META_TYPE_BACKE
G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE,
initable_iface_init))
static void
disconnect_udev_device_added_handler (MetaBackendNative *native);
static void
meta_backend_native_dispose (GObject *object)
{
MetaBackendNative *native = META_BACKEND_NATIVE (object);
if (native->udev_device_added_handler_id)
{
disconnect_udev_device_added_handler (native);
native->udev_device_added_handler_id = 0;
}
if (native->kms)
meta_kms_prepare_shutdown (native->kms);
@ -485,20 +474,6 @@ on_udev_device_added (MetaUdev *udev,
meta_backend_add_gpu (backend, META_GPU (new_gpu_kms));
}
static void
connect_udev_device_added_handler (MetaBackendNative *native)
{
native->udev_device_added_handler_id =
g_signal_connect (native->udev, "device-added",
G_CALLBACK (on_udev_device_added), native);
}
static void
disconnect_udev_device_added_handler (MetaBackendNative *native)
{
g_clear_signal_handler (&native->udev_device_added_handler_id, native->udev);
}
static gboolean
init_gpus (MetaBackendNative *native,
GError **error)
@ -549,7 +524,9 @@ init_gpus (MetaBackendNative *native,
return FALSE;
}
connect_udev_device_added_handler (native);
g_signal_connect_object (native->udev, "device-added",
G_CALLBACK (on_udev_device_added), native,
0);
return TRUE;
}
@ -724,8 +701,7 @@ meta_backend_native_pause (MetaBackendNative *native)
meta_seat_native_release_devices (seat);
meta_renderer_pause (renderer);
disconnect_udev_device_added_handler (native);
meta_udev_pause (native->udev);
meta_monitor_manager_native_pause (monitor_manager_native);
}
@ -749,10 +725,9 @@ void meta_backend_native_resume (MetaBackendNative *native)
"Backend (resume)");
meta_monitor_manager_native_resume (monitor_manager_native);
meta_udev_resume (native->udev);
meta_kms_resume (native->kms);
connect_udev_device_added_handler (native);
meta_seat_native_reclaim_devices (seat);
meta_renderer_resume (renderer);

12
src/backends/native/meta-udev.c
View File

@ -222,6 +222,18 @@ meta_udev_new (MetaBackendNative *backend_native)
return udev;
}
void
meta_udev_pause (MetaUdev *udev)
{
g_signal_handler_block (udev->gudev_client, udev->uevent_handler_id);
}
void
meta_udev_resume (MetaUdev *udev)
{
g_signal_handler_unblock (udev->gudev_client, udev->uevent_handler_id);
}
static void
meta_udev_finalize (GObject *object)
{

4
src/backends/native/meta-udev.h
View File

@ -44,6 +44,10 @@ gboolean meta_udev_is_drm_device (MetaUdev *udev,
GList * meta_udev_list_drm_devices (MetaUdev *udev,
GError **error);
void meta_udev_pause (MetaUdev *udev);
void meta_udev_resume (MetaUdev *udev);
MetaUdev * meta_udev_new (MetaBackendNative *backend_native);
#endif /* META_UDEV_H */