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

Browse source 
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
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14
Kernel/Syscall.cpp
View file

@ -201,12 +201,18 @@ static dword handle(RegisterDump& regs, dword function, dword arg1, dword arg2,
return current->gui$destroy_window((int)arg1);
case Syscall::SC_gui_get_window_backing_store:
return current->gui$get_window_backing_store((int)arg1, (GUI_WindowBackingStoreInfo*)arg2);
case Syscall::SC_gui_release_window_backing_store:
return current->gui$release_window_backing_store((void*)arg1);
case Syscall::SC_gui_invalidate_window:
return current->gui$invalidate_window((int)arg1, (const GUI_Rect*)arg2);
case Syscall::SC_gui_set_window_parameters:
return current->gui$set_window_parameters((int)arg1, (const GUI_WindowParameters*)arg2);
case Syscall::SC_gui_get_window_parameters:
return current->gui$get_window_parameters((int)arg1, (GUI_WindowParameters*)arg2);
case Syscall::SC_gui_set_window_title:
return current->gui$set_window_title((int)arg1, (const char*)arg2, (size_t)arg3);
case Syscall::SC_gui_get_window_title:
return current->gui$get_window_title((int)arg1, (char*)arg2, (size_t)arg3);
case Syscall::SC_gui_set_window_rect:
return current->gui$set_window_rect((int)arg1, (const GUI_Rect*)arg2);
case Syscall::SC_gui_get_window_rect:
return current->gui$get_window_rect((int)arg1, (GUI_Rect*)arg2);
default:
kprintf("<%u> int0x80: Unknown function %u requested {%x, %x, %x}\n", current->pid(), function, arg1, arg2, arg3);
break;