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// Copyright Epic Games, Inc. All Rights Reserved.
#include <zencore/sharedbuffer.h>
#include <doctest/doctest.h>
#include <memory.h>
#include <atlfile.h>
#include <gsl/gsl-lite.hpp>
namespace zen {
BufferOwner::~BufferOwner()
{
if (m_IsOwned)
{
Memory::Free(m_Data);
}
}
//////////////////////////////////////////////////////////////////////////
UniqueBuffer
UniqueBuffer::Alloc(uint64_t Size)
{
void* Buffer = Memory::Alloc(Size, 16);
BufferOwner* Owner = new BufferOwner(Buffer, Size, /* owned */ true);
return UniqueBuffer(Owner);
}
UniqueBuffer
UniqueBuffer::MakeView(void* DataPtr, uint64_t Size)
{
return UniqueBuffer(new BufferOwner(DataPtr, Size, /* owned */ false));
}
UniqueBuffer::UniqueBuffer(BufferOwner* Owner) : m_buffer(Owner)
{
}
//////////////////////////////////////////////////////////////////////////
SharedBuffer::SharedBuffer(UniqueBuffer&& InBuffer) : m_buffer(std::move(InBuffer.m_buffer))
{
}
void
SharedBuffer::MakeOwned()
{
if (IsOwned() || !m_buffer)
return;
const uint64_t Size = m_buffer->m_Size;
void* Buffer = Memory::Alloc(Size, 16);
auto NewOwner = new BufferOwner(Buffer, Size, /* owned */ true);
memcpy(Buffer, m_buffer->m_Data, Size);
m_buffer = NewOwner;
}
SharedBuffer
SharedBuffer::MakeView(MemoryView View, SharedBuffer Buffer)
{
// Todo: verify that view is within the shared buffer
return SharedBuffer(new BufferOwner(const_cast<void*>(View.GetData()), View.GetSize(), /* owned */ false, Buffer.m_buffer));
}
SharedBuffer
SharedBuffer::MakeView(const void* Data, uint64_t Size)
{
return SharedBuffer(new BufferOwner(const_cast<void*>(Data), Size, /* owned */ false));
}
SharedBuffer
SharedBuffer::Clone()
{
const uint64_t Size = GetSize();
void* Buffer = Memory::Alloc(Size, 16);
auto NewOwner = new BufferOwner(Buffer, Size, /* owned */ true);
memcpy(Buffer, m_buffer->m_Data, Size);
return SharedBuffer(NewOwner);
}
SharedBuffer
SharedBuffer::Clone(MemoryView View)
{
const uint64_t Size = View.GetSize();
void* Buffer = Memory::Alloc(Size, 16);
auto NewOwner = new BufferOwner(Buffer, Size, /* owned */ true);
memcpy(Buffer, View.GetData(), Size);
return SharedBuffer(NewOwner);
}
//////////////////////////////////////////////////////////////////////////
void
sharedbuffer_forcelink()
{
}
TEST_CASE("SharedBuffer")
{
}
} // namespace zen
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