Disabled external gits

cs440-acg/ext/pugixml/tests/allocator.cpp

@@ -0,0 +1,117 @@
+#include "allocator.hpp"
+
+#include <string.h>
+#include <assert.h>
+
+// Low-level allocation functions
+#if defined(_WIN32) || defined(_WIN64)
+#	ifdef __MWERKS__
+#		pragma ANSI_strict off // disable ANSI strictness to include windows.h
+#		pragma cpp_extensions on // enable some extensions to include windows.h
+#	endif
+
+#   if defined(_MSC_VER)
+#       pragma warning(disable: 4201) // nonstandard extension used: nameless struct/union
+#   endif
+
+#	ifdef _XBOX_VER
+#		define NOD3D
+#		include <xtl.h>
+#	else
+#		include <windows.h>
+#	endif
+
+namespace
+{
+	const size_t PAGE_SIZE = 4096;
+
+	size_t align_to_page(size_t value)
+	{
+		return (value + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1);
+	}
+
+	void* allocate_page_aligned(size_t size)
+	{
+		// We can't use VirtualAlloc because it has 64Kb granularity so we run out of address space quickly
+		// We can't use malloc because of occasional problems with CW on CRT termination
+		static HANDLE heap = HeapCreate(0, 0, 0);
+
+		void* result = HeapAlloc(heap, 0, size + PAGE_SIZE);
+
+		return reinterpret_cast<void*>(align_to_page(reinterpret_cast<size_t>(result)));
+	}
+
+	void* allocate(size_t size)
+	{
+		size_t aligned_size = align_to_page(size);
+
+		void* ptr = allocate_page_aligned(aligned_size + PAGE_SIZE);
+		if (!ptr) return 0;
+
+		char* end = static_cast<char*>(ptr) + aligned_size;
+
+		DWORD old_flags;
+		VirtualProtect(end, PAGE_SIZE, PAGE_NOACCESS, &old_flags);
+
+		return end - size;
+	}
+
+	void deallocate(void* ptr, size_t size)
+	{
+		size_t aligned_size = align_to_page(size);
+
+		void* rptr = static_cast<char*>(ptr) + size - aligned_size;
+
+		DWORD old_flags;
+		VirtualProtect(rptr, aligned_size + PAGE_SIZE, PAGE_NOACCESS, &old_flags);
+	}
+}
+#else
+#	include <stdlib.h>
+
+namespace
+{
+	void* allocate(size_t size)
+	{
+		return malloc(size);
+	}
+
+	void deallocate(void* ptr, size_t size)
+	{
+		(void)size;
+
+		free(ptr);
+	}
+}
+#endif
+
+// High-level allocation functions
+void* memory_allocate(size_t size)
+{
+	void* result = allocate(size + sizeof(size_t));
+	if (!result) return 0;
+
+	memcpy(result, &size, sizeof(size_t));
+
+	return static_cast<size_t*>(result) + 1;
+}
+
+size_t memory_size(void* ptr)
+{
+	assert(ptr);
+
+	size_t result;
+	memcpy(&result, static_cast<size_t*>(ptr) - 1, sizeof(size_t));
+
+	return result;
+}
+
+void memory_deallocate(void* ptr)
+{
+	if (!ptr) return;
+
+	size_t size = memory_size(ptr);
+
+	deallocate(static_cast<size_t*>(ptr) - 1, size + sizeof(size_t));
+}
+