实现基本内存操作 Linux 平台测试

Redcraft.Core/Source/Private/HAL/Memory.cpp

@@ -0,0 +1,75 @@
+#include "HAL/Memory.h"
+
+#include "Templates/Alignment.h"
+
+#ifdef PLATFORM_WINDOWS
+#include <corecrt_malloc.h>
+#endif
+
+NS_REDCRAFT_BEGIN
+NS_BEGIN(Memory)
+
+void* Malloc(size_t Count, uint32 Alignment)
+{
+	Alignment = Math::Max(Count >= 16 ? (uint32)16 : (uint32)8, Alignment);
+
+	void* Result = nullptr;
+
+#ifdef PLATFORM_WINDOWS
+	if (Count != 0) Result = _aligned_malloc(Count, Alignment);
+#else
+	void* Ptr = SystemMalloc(Count + Alignment + sizeof(void*) + sizeof(size_t));
+	if (Ptr)
+	{
+		Result = Align((uint8*)Ptr + sizeof(void*) + sizeof(size_t), Alignment);
+		*((void**)((uint8*)Result - sizeof(void*))) = Ptr;
+		*((size_t*)((uint8*)Result - sizeof(void*) - sizeof(size_t))) = Count;
+	}
+#endif
+
+	return Result;
+}
+
+void* Realloc(void* Ptr, size_t Count, uint32 Alignment)
+{
+	Alignment = Math::Max(Count >= 16 ? (uint32)16 : (uint32)8, Alignment);
+
+	if (Ptr && Count)
+	{
+#ifdef PLATFORM_WINDOWS
+		return _aligned_realloc(Ptr, Count, Alignment);
+#else
+		void* Result = Malloc(Count, Alignment);
+		size_t PtrSize = *((size_t*)((uint8*)Ptr - sizeof(void*) - sizeof(size_t)));
+		Memcpy(Result, Ptr, Math::Min(Count, PtrSize));
+		Free(Ptr);
+		return Result;
+#endif
+	}
+	else if (Ptr == nullptr)
+	{
+		return Malloc(Count, Alignment);
+	}
+	else
+	{
+		Free(Ptr);
+		return nullptr;
+	}
+}
+
+void Free(void* Ptr)
+{
+#if PLATFORM_WINDOWS
+	_aligned_free(Ptr);
+#else
+	SystemFree(*((void**)((uint8*)Ptr - sizeof(void*))));
+#endif
+}
+
+size_t QuantizeSize(size_t Count, uint32 Alignment)
+{
+	return Count;
+}
+
+NS_END(Memory)
+NS_REDCRAFT_END