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Code Issues Activity Actions

Make GraphicsBitmaps be Region-backed when running in the kernel.

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This is a lot better than having them in kmalloc memory. I'm gonna need
a way to keep track of which process owns which bitmap eventually,
maybe through some sort of resource keying system. We'll see.
This commit is contained in:
Andreas Kling 2019-01-13 00:27:25 +01:00
parent e4cb9b2985
commit becc2c7fa5
7 changed files with 30 additions and 3 deletions
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15
Widgets/GraphicsBitmap.cpp
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@ -1,6 +1,11 @@
#include "GraphicsBitmap.h"
#include <AK/kmalloc.h>
#ifdef SERENITY
#include "Process.h"
#include "MemoryManager.h"
#endif
RetainPtr<GraphicsBitmap> GraphicsBitmap::create(const Size& size)
{
return adopt(*new GraphicsBitmap(size));
@ -15,9 +20,15 @@ GraphicsBitmap::GraphicsBitmap(const Size& size)
: m_size(size)
, m_pitch(size.width() * sizeof(RGBA32))
{
#ifdef SERENITY
m_region = current->allocate_region(LinearAddress(), size.width() * size.height() * sizeof(RGBA32), "GraphicsBitmap", true, true, true);
m_data = (RGBA32*)m_region->linearAddress.asPtr();
m_owned = false;
#else
m_data = static_cast<RGBA32*>(kmalloc(size.width() * size.height() * sizeof(RGBA32)));
memset(m_data, 0, size.width() * size.height() * sizeof(RGBA32));
m_owned = true;
#endif
}
GraphicsBitmap::GraphicsBitmap(const Size& size, RGBA32* data)
@ -30,6 +41,10 @@ GraphicsBitmap::GraphicsBitmap(const Size& size, RGBA32* data)
GraphicsBitmap::~GraphicsBitmap()
{
#ifdef SERENITY
if (m_region)
current->deallocate_region(*m_region);
#endif
if (m_owned)
kfree(m_data);
m_data = nullptr;