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Protect window callbacks from deleted windows

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Calling window_destroy() was able to cause segfault for
callbacks triggering afterwards.
This commit is contained in:
Pekka Vuorela 2012-09-17 22:15:57 +03:00 • committed by Kristian Høgsberg
parent b9af479f02
commit 6e1e385d51
1 changed files with 11 additions and 3 deletions
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14
clients/window.c
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@ -165,6 +165,8 @@ struct window {
window_close_handler_t close_handler;
window_fullscreen_handler_t fullscreen_handler;
struct wl_callback *frame_cb;
struct frame *frame;
struct widget *widget;
@ -992,6 +994,8 @@ window_destroy(struct window *window)
if (window->cairo_surface != NULL)
cairo_surface_destroy(window->cairo_surface);
if (window->frame_cb)
wl_callback_destroy(window->frame_cb);
free(window->title);
free(window);
}
@ -2003,6 +2007,9 @@ pointer_handle_motion(void *data, struct wl_pointer *pointer,
input->sx = sx;
input->sy = sy;
if (!window)
return;
if (!(input->grab && input->grab_button)) {
widget = widget_find_widget(window->widget, sx, sy);
input_set_focus_widget(input, widget, sx, sy);
@ -2871,7 +2878,9 @@ frame_callback(void *data, struct wl_callback *callback, uint32_t time)
{
struct window *window = data;
assert(callback == window->frame_cb);
wl_callback_destroy(callback);
window->frame_cb = 0;
window->redraw_scheduled = 0;
if (window->redraw_needed)
window_schedule_redraw(window);
@ -2885,7 +2894,6 @@ static void
idle_redraw(struct task *task, uint32_t events)
{
struct window *window = container_of(task, struct window, redraw_task);
struct wl_callback *callback;
if (window->resize_needed)
idle_resize(window);
@ -2896,8 +2904,8 @@ idle_redraw(struct task *task, uint32_t events)
window->redraw_needed = 0;
wl_list_init(&window->redraw_task.link);
callback = wl_surface_frame(window->surface);
wl_callback_add_listener(callback, &listener, window);
window->frame_cb = wl_surface_frame(window->surface);
wl_callback_add_listener(window->frame_cb, &listener, window);
}
void