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61 lines
1.5 KiB
C++
61 lines
1.5 KiB
C++
/*
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* Copyright (c) 2021, Andreas Kling <andreas@ladybird.org>
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* Copyright (c) 2024-2025, stasoid <stasoid@yahoo.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibCore/AnonymousBuffer.h>
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#include <LibCore/System.h>
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#include <AK/Windows.h>
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namespace Core {
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AnonymousBufferImpl::AnonymousBufferImpl(int fd, size_t size, void* data)
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: m_fd(fd)
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, m_size(size)
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, m_data(data)
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{
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}
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AnonymousBufferImpl::~AnonymousBufferImpl()
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{
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if (m_data)
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VERIFY(UnmapViewOfFile(m_data));
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if (m_fd != -1)
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MUST(System::close(m_fd));
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}
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ErrorOr<NonnullRefPtr<AnonymousBufferImpl>> AnonymousBufferImpl::create(size_t size)
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{
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HANDLE map_handle = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, size >> 32, size & 0xFFFFFFFF, NULL);
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if (!map_handle)
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return Error::from_windows_error();
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return create(to_fd(map_handle), size);
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}
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ErrorOr<NonnullRefPtr<AnonymousBufferImpl>> AnonymousBufferImpl::create(int fd, size_t size)
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{
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void* ptr = MapViewOfFile(to_handle(fd), FILE_MAP_ALL_ACCESS, 0, 0, size);
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if (!ptr)
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return Error::from_windows_error();
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return adopt_ref(*new AnonymousBufferImpl(fd, size, ptr));
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}
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ErrorOr<AnonymousBuffer> AnonymousBuffer::create_with_size(size_t size)
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{
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auto impl = TRY(AnonymousBufferImpl::create(size));
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return AnonymousBuffer(move(impl));
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}
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ErrorOr<AnonymousBuffer> AnonymousBuffer::create_from_anon_fd(int fd, size_t size)
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{
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auto impl = TRY(AnonymousBufferImpl::create(fd, size));
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return AnonymousBuffer(move(impl));
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}
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}
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