124 files changed.

Project Reboot 3.0/TypeCompatibleBytes.h

@@ -0,0 +1,63 @@
+#pragma once
+
+#include "inc.h"
+
+template<int32 Size, uint32 Alignment>
+struct TAlignedBytes; // this intentionally won't compile, we don't support the requested alignment
+
+/** Unaligned storage. */
+template<int32 Size>
+struct TAlignedBytes<Size, 1>
+{
+	uint8 Pad[Size];
+};
+
+#ifndef GCC_PACK
+#define GCC_PACK(n)
+#endif
+#ifndef GCC_ALIGN
+#define GCC_ALIGN(n)
+#endif
+#ifndef MS_ALIGN
+#define MS_ALIGN(n)
+#endif
+
+// C++/CLI doesn't support alignment of native types in managed code, so we enforce that the element
+// size is a multiple of the desired alignment
+#ifdef __cplusplus_cli
+#define IMPLEMENT_ALIGNED_STORAGE(Align) \
+		template<int32 Size>        \
+		struct TAlignedBytes<Size,Align> \
+		{ \
+			uint8 Pad[Size]; \
+			static_assert(Size % Align == 0, "CLR interop types must not be aligned."); \
+		};
+#else
+/** A macro that implements TAlignedBytes for a specific alignment. */
+#define IMPLEMENT_ALIGNED_STORAGE(Align) \
+	template<int32 Size>        \
+	struct TAlignedBytes<Size,Align> \
+	{ \
+		struct MS_ALIGN(Align) TPadding \
+		{ \
+			uint8 Pad[Size]; \
+		} GCC_ALIGN(Align); \
+		TPadding Padding; \
+	};
+#endif
+
+// Implement TAlignedBytes for these alignments.
+IMPLEMENT_ALIGNED_STORAGE(16);
+IMPLEMENT_ALIGNED_STORAGE(8);
+IMPLEMENT_ALIGNED_STORAGE(4);
+IMPLEMENT_ALIGNED_STORAGE(2);
+
+#undef IMPLEMENT_ALIGNED_STORAGE
+
+template<typename ElementType>
+struct TTypeCompatibleBytes :
+	public TAlignedBytes<
+	sizeof(ElementType),
+	alignof(ElementType)
+	>
+{};