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display: Set xattr on focus window cgroup dir

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Added a function `meta_window_set_inactive_since` it sets
xattr on the cgroup directory for the given MetaWindow.

Resource management daemons can then monitor these changes on xattr
and make allocation decisions accordingly.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1960>
This commit is contained in:
Nishal Kulkarni 2021-08-06 00:30:22 +05:30 committed by Florian Müllner
parent c2efe25597
commit 7555688d8d
1 changed files with 35 additions and 2 deletions
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37
src/core/display.c
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@ -1404,17 +1404,41 @@ meta_display_sync_wayland_input_focus (MetaDisplay *display)
#endif
}
static void
meta_window_set_inactive_since (MetaWindow *window,
int64_t inactive_since_us)
{
GFile *file = NULL;
g_autoptr (GFileInfo) file_info = NULL;
g_autofree char *timestamp = NULL;
timestamp = g_strdup_printf ("%" G_GINT64_FORMAT, inactive_since_us);
file = meta_window_get_unit_cgroup (window);
if (!file)
return;
file_info = g_file_info_new ();
g_file_info_set_attribute_string (file_info,
"xattr::xdg.inactive-since", timestamp);
if (!g_file_set_attributes_from_info (file, file_info,
G_FILE_QUERY_INFO_NONE,
NULL, NULL))
return;
}
void
meta_display_update_focus_window (MetaDisplay *display,
MetaWindow *window)
{
MetaWindow *previous = NULL;
if (display->focus_window == window)
return;
if (display->focus_window)
{
MetaWindow *previous;
meta_topic (META_DEBUG_FOCUS,
"%s is now the previous focus window due to being focused out or unmapped",
display->focus_window->desc);
@ -1440,6 +1464,15 @@ meta_display_update_focus_window (MetaDisplay *display,
else
meta_topic (META_DEBUG_FOCUS, "* Focus --> NULL");
if (!previous || !display->focus_window ||
!meta_window_unit_cgroup_equal (previous, display->focus_window))
{
if (previous)
meta_window_set_inactive_since (previous, g_get_monotonic_time ());
if (display->focus_window)
meta_window_set_inactive_since (display->focus_window, -1);
}
if (meta_is_wayland_compositor ())
meta_display_sync_wayland_input_focus (display);