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xwayland: Avoid repeatedly looping through window ancestor chain

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Calling xwl_window_from_window means looping through the window ancestor
chain whenever it is called on a child window or on an automatically
redirected window.

Since these properties and the potential ancestor's xwl_window are constant
between window realization and unrealization, we can omit the looping by
always putting the respective xwl_window in the Window's private field on
its realization. If the Window doesn't feature an xwl_window on its own,
it's the xwl_window of its first ancestor with one.

Signed-off-by: Roman Gilg <subdiff@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
This commit is contained in:
Roman Gilg 2017-08-22 15:38:26 +02:00 committed by Adam Jackson
parent 1089d5d518
commit 82df2ce38c
3 changed files with 31 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
hw/xwayland/xwayland-input.c
View File

@ -1067,7 +1067,7 @@ xwl_keyboard_activate_grab(DeviceIntPtr device, GrabPtr grab, TimeStamp time, Bo
if (xwl_seat == NULL)
xwl_seat = find_matching_seat(device);
if (xwl_seat)
set_grab(xwl_seat, xwl_window_from_window(grab->window));
set_grab(xwl_seat, xwl_window_of_top(grab->window));
}
ActivateKeyboardGrab(device, grab, time, passive);

54
hw/xwayland/xwayland.c
View File

@ -105,12 +105,23 @@ static DevPrivateKeyRec xwl_window_private_key;
static DevPrivateKeyRec xwl_screen_private_key;
static DevPrivateKeyRec xwl_pixmap_private_key;
static struct xwl_window *
xwl_window_get(WindowPtr window)
struct xwl_window *
xwl_window_of_top(WindowPtr window)
{
return dixLookupPrivate(&window->devPrivates, &xwl_window_private_key);
}
static struct xwl_window *
xwl_window_of_self(WindowPtr window)
{
struct xwl_window *xwl_window = dixLookupPrivate(&window->devPrivates, &xwl_window_private_key);
if (xwl_window && xwl_window->window == window)
return xwl_window;
else
return NULL;
}
struct xwl_screen *
xwl_screen_get(ScreenPtr screen)
{
@ -195,7 +206,7 @@ xwl_property_callback(CallbackListPtr *pcbl, void *closure,
if (rec->win->drawable.pScreen != screen)
return;
xwl_window = xwl_window_get(rec->win);
xwl_window = xwl_window_of_self(rec->win);
if (!xwl_window)
return;
@ -234,22 +245,6 @@ xwl_close_screen(ScreenPtr screen)
return screen->CloseScreen(screen);
}
struct xwl_window *
xwl_window_from_window(WindowPtr window)
{
struct xwl_window *xwl_window;
while (window) {
xwl_window = xwl_window_get(window);
if (xwl_window)
return xwl_window;
window = window->parent;
}
return NULL;
}
static struct xwl_seat *
xwl_screen_get_default_seat(struct xwl_screen *xwl_screen)
{
@ -274,7 +269,7 @@ xwl_cursor_warped_to(DeviceIntPtr device,
if (!xwl_seat)
xwl_seat = xwl_screen_get_default_seat(xwl_screen);
xwl_window = xwl_window_from_window(window);
xwl_window = xwl_window_of_top(window);
if (!xwl_window && xwl_seat->focus_window) {
focus = xwl_seat->focus_window->window;
@ -317,7 +312,7 @@ xwl_cursor_confined_to(DeviceIntPtr device,
return;
}
xwl_window = xwl_window_from_window(window);
xwl_window = xwl_window_of_top(window);
if (!xwl_window && xwl_seat->focus_window) {
/* Allow confining on InputOnly windows, but only if the geometry
* is the same than the focus window.
@ -433,6 +428,7 @@ xwl_realize_window(WindowPtr window)
struct xwl_screen *xwl_screen;
struct xwl_window *xwl_window;
struct wl_region *region;
Bool create_xwl_window = TRUE;
Bool ret;
xwl_screen = xwl_screen_get(screen);
@ -452,11 +448,17 @@ xwl_realize_window(WindowPtr window)
if (xwl_screen->rootless) {
if (window->redirectDraw != RedirectDrawManual)
return ret;
create_xwl_window = FALSE;
}
else {
if (window->parent)
return ret;
create_xwl_window = FALSE;
}
if (!create_xwl_window) {
if (window->parent)
dixSetPrivate(&window->devPrivates, &xwl_window_private_key, xwl_window_of_top(window->parent));
return ret;
}
xwl_window = calloc(1, sizeof *xwl_window);
@ -560,9 +562,11 @@ xwl_unrealize_window(WindowPtr window)
xwl_screen->UnrealizeWindow = screen->UnrealizeWindow;
screen->UnrealizeWindow = xwl_unrealize_window;
xwl_window = xwl_window_get(window);
if (!xwl_window)
xwl_window = xwl_window_of_self(window);
if (!xwl_window) {
dixSetPrivate(&window->devPrivates, &xwl_window_private_key, NULL);
return ret;
}
wl_surface_destroy(xwl_window->surface);
if (RegionNotEmpty(DamageRegion(xwl_window->damage)))

2
hw/xwayland/xwayland.h
View File

@ -309,7 +309,7 @@ RRModePtr xwayland_cvt(int HDisplay, int VDisplay,
void xwl_pixmap_set_private(PixmapPtr pixmap, struct xwl_pixmap *xwl_pixmap);
struct xwl_pixmap *xwl_pixmap_get(PixmapPtr pixmap);
struct xwl_window *xwl_window_from_window(WindowPtr window);
struct xwl_window *xwl_window_of_top(WindowPtr window);
Bool xwl_shm_create_screen_resources(ScreenPtr screen);
PixmapPtr xwl_shm_create_pixmap(ScreenPtr screen, int width, int height,