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path: root/eastl-implement-allocator.patch
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diff -ruN EASTL-3.18.00/include/EASTL/allocator.h EASTL-3.18.00_/include/EASTL/allocator.h
--- EASTL-3.18.00/include/EASTL/allocator.h	2023-01-30 14:49:47.133053092 +0800
+++ EASTL-3.18.00_/include/EASTL/allocator.h	2023-01-30 14:52:58.180341764 +0800
@@ -164,18 +164,6 @@
 
 #ifndef EASTL_USER_DEFINED_ALLOCATOR // If the user hasn't declared that he has defined a different allocator implementation elsewhere...
 
-	EA_DISABLE_ALL_VC_WARNINGS()
-	#include <new>
-	EA_RESTORE_ALL_VC_WARNINGS()
-
-	#if !EASTL_DLL // If building a regular library and not building EASTL as a DLL...
-		// It is expected that the application define the following
-		// versions of operator new for the application. Either that or the
-		// user needs to override the implementation of the allocator class.
-		void* operator new[](size_t size, const char* pName, int flags, unsigned debugFlags, const char* file, int line);
-		void* operator new[](size_t size, size_t alignment, size_t alignmentOffset, const char* pName, int flags, unsigned debugFlags, const char* file, int line);
-	#endif
-
 	namespace eastl
 	{
 		inline allocator::allocator(const char* EASTL_NAME(pName))
@@ -237,46 +225,17 @@
 				#define pName EASTL_ALLOCATOR_DEFAULT_NAME
 			#endif
 
-			#if EASTL_DLL
-				return allocate(n, EASTL_SYSTEM_ALLOCATOR_MIN_ALIGNMENT, 0, flags);
-			#elif (EASTL_DEBUGPARAMS_LEVEL <= 0)
-				return ::new((char*)0, flags, 0, (char*)0,        0) char[n];
-			#elif (EASTL_DEBUGPARAMS_LEVEL == 1)
-				return ::new(   pName, flags, 0, (char*)0,        0) char[n];
-			#else
-				return ::new(   pName, flags, 0, __FILE__, __LINE__) char[n];
-			#endif
+      return malloc(n);
 		}
 
 
 		inline void* allocator::allocate(size_t n, size_t alignment, size_t offset, int flags)
 		{
-			#if EASTL_DLL
-				// We currently have no support for implementing flags when 
-				// using the C runtime library operator new function. The user 
-				// can use SetDefaultAllocator to override the default allocator.
-				EA_UNUSED(offset); EA_UNUSED(flags);
-
-				size_t adjustedAlignment = (alignment > EA_PLATFORM_PTR_SIZE) ? alignment : EA_PLATFORM_PTR_SIZE;
-
-				void* p = new char[n + adjustedAlignment + EA_PLATFORM_PTR_SIZE];
-				void* pPlusPointerSize = (void*)((uintptr_t)p + EA_PLATFORM_PTR_SIZE);
-				void* pAligned = (void*)(((uintptr_t)pPlusPointerSize + adjustedAlignment - 1) & ~(adjustedAlignment - 1));
-
-				void** pStoredPtr = (void**)pAligned - 1;
-				EASTL_ASSERT(pStoredPtr >= p);
-				*(pStoredPtr) = p;
-
-				EASTL_ASSERT(((size_t)pAligned & ~(alignment - 1)) == (size_t)pAligned);
-
-				return pAligned;
-			#elif (EASTL_DEBUGPARAMS_LEVEL <= 0)
-				return ::new(alignment, offset, (char*)0, flags, 0, (char*)0,        0) char[n];
-			#elif (EASTL_DEBUGPARAMS_LEVEL == 1)
-				return ::new(alignment, offset,    pName, flags, 0, (char*)0,        0) char[n];
-			#else
-				return ::new(alignment, offset,    pName, flags, 0, __FILE__, __LINE__) char[n];
-			#endif
+      EASTL_ASSERT(offset % alignmnent == 0); /* We check for (offset % alignmnent == 0) instead of (offset == 0) because any block which is aligned on e.g. 64 also is aligned at an offset of 64 by definition. */
+		  if (alignment <= EASTL_SYSTEM_ALLOCATOR_MIN_ALIGNMENT) {
+			  return allocate(n, flags);
+		  }
+      return aligned_alloc(alignment, n);
 
 			#undef pName  // See above for the definition of this.
 		}
@@ -284,15 +243,7 @@
 
 		inline void allocator::deallocate(void* p, size_t)
 		{
-			#if EASTL_DLL
-				if (p != nullptr)
-				{
-					void* pOriginalAllocation = *((void**)p - 1);
-					delete[](char*)pOriginalAllocation;
-				}
-			#else
-				delete[](char*)p;
-			#endif
+      free(p);
 		}