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Kernel: Refactor Region/PageDirectory ownership model.

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Make PageDirectory retainable and have each Region co-own the PageDirectory
they're mapped into. When unmapped, Region has no associated PageDirectory.

This allows Region to automatically unmap itself when destroyed.
This commit is contained in:
Andreas Kling
2019-01-22 05:01:00 +01:00
parent afccbe51a4
commit 2f2f28f212
5 changed files with 60 additions and 68 deletions
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2
SharedGraphics/GraphicsBitmap.cpp
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@@ -22,7 +22,7 @@ GraphicsBitmap::GraphicsBitmap(Process& process, const Size& size)
auto vmo = VMObject::create_anonymous(size_in_bytes);
m_client_region = process.allocate_region_with_vmo(LinearAddress(), size_in_bytes, vmo.copyRef(), 0, "GraphicsBitmap (client)", true, true);
m_client_region->set_shared(true);
m_client_region->commit(process);
m_client_region->commit();
{
auto& server = WSEventLoop::the().server_process();