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Let userland retain the window backing store while drawing into it.

To start painting, call:
gui$get_window_backing_store()

Then finish up with:
gui$release_window_backing_store()

Process will retain the underlying GraphicsBitmap behind the scenes.
This fixes racing between the WindowServer and GUI clients.

This patch also adds a WSWindowLocker that is exactly what it sounds like.
This commit is contained in:
Andreas Kling 2019-01-24 23:40:12 +01:00
parent ccf3fc4618
commit 86eae0f8df
22 changed files with 244 additions and 102 deletions

View file

@ -30,6 +30,7 @@ int main(int argc, char** argv)
return 1;
}
// NOTE: We never release the backing store. This is just a simple app. :^)
GUI_WindowBackingStoreInfo backing;
int rc = gui_get_window_backing_store(window_id, &backing);
if (rc < 0) {