59 lines
2.0 KiB
C++
59 lines
2.0 KiB
C++
//-------------------------------------------------------------------------------------
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// scoped.h
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//
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// Utility header with helper classes for exception-safe handling of resources
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// Licensed under the MIT License.
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//-------------------------------------------------------------------------------------
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#pragma once
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#include <assert.h>
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#include <memory>
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#include <malloc.h>
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//---------------------------------------------------------------------------------
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struct aligned_deleter { void operator()(void* p) noexcept { _aligned_free(p); } };
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using ScopedAlignedArrayFloat = std::unique_ptr<float[], aligned_deleter>;
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using ScopedAlignedArrayXMVECTOR = std::unique_ptr<DirectX::XMVECTOR[], aligned_deleter>;
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//---------------------------------------------------------------------------------
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struct handle_closer { void operator()(HANDLE h) noexcept { assert(h != INVALID_HANDLE_VALUE); if (h) CloseHandle(h); } };
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using ScopedHandle = std::unique_ptr<void, handle_closer>;
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inline HANDLE safe_handle(HANDLE h) noexcept { return (h == INVALID_HANDLE_VALUE) ? nullptr : h; }
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//---------------------------------------------------------------------------------
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struct find_closer { void operator()(HANDLE h) noexcept { assert(h != INVALID_HANDLE_VALUE); if (h) FindClose(h); } };
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using ScopedFindHandle = std::unique_ptr<void, find_closer>;
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//---------------------------------------------------------------------------------
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class auto_delete_file
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{
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public:
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auto_delete_file(HANDLE hFile) noexcept : m_handle(hFile) {}
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auto_delete_file(const auto_delete_file&) = delete;
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auto_delete_file& operator=(const auto_delete_file&) = delete;
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~auto_delete_file()
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{
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if (m_handle)
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{
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FILE_DISPOSITION_INFO info = {};
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info.DeleteFile = TRUE;
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(void)SetFileInformationByHandle(m_handle, FileDispositionInfo, &info, sizeof(info));
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}
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}
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void clear() noexcept { m_handle = nullptr; }
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private:
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HANDLE m_handle;
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};
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