Align memory alloc.

Author: tritao

src/CppParser/Bindings/CSharp/arm64-apple-darwin/CppSharp.CppParser.cs

@@ -8,6 +8,7 @@
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 using System.Security;
+using __NativeMemory = global::System.Runtime.InteropServices.NativeMemory;
 using __CallingConvention = global::System.Runtime.InteropServices.CallingConvention;
 using __IntPtr = global::System.IntPtr;
 
@@ -110,7 +111,7 @@ internal static CharTraits<_CharT> __CreateInstance(global::Std.CharTraits.__Int
 
         private static void* __CopyValue(global::Std.CharTraits.__Internal native)
         {
-            var ret = Marshal.AllocHGlobal(sizeof(global::Std.CharTraits.__Internal));
+            var ret = (nint)__NativeMemory.AlignedAlloc((nuint)sizeof(global::Std.CharTraits.__Internal), 16);
             *(global::Std.CharTraits.__Internal*) ret = native;
             return ret.ToPointer();
         }
@@ -143,7 +144,7 @@ internal protected virtual void Dispose(bool disposing, bool callNativeDtor)
             NativeToManagedMap.TryRemove(__Instance, out _);
             DisposePartial(disposing);
             if (__ownsNativeInstance)
-                Marshal.FreeHGlobal(__Instance);
+                __NativeMemory.AlignedFree((void*)__Instance);
             __Instance = IntPtr.Zero;
         }
     }
@@ -243,7 +244,7 @@ internal static Allocator<_Tp> __CreateInstance(global::Std.Allocator.__Internal
 
         private static void* __CopyValue(global::Std.Allocator.__Internal native)
         {
-            var ret = Marshal.AllocHGlobal(sizeof(global::Std.Allocator.__Internal));
+            var ret = (nint)__NativeMemory.AlignedAlloc((nuint)sizeof(global::Std.Allocator.__Internal), 16);
             *(global::Std.Allocator.__Internal*) ret = native;
             return ret.ToPointer();
         }
@@ -267,7 +268,7 @@ public Allocator()
             var ___Tp = typeof(_Tp);
             if (___Tp.IsAssignableFrom(typeof(sbyte)))
             {
-                __Instance = Marshal.AllocHGlobal(sizeof(global::Std.Allocator.__Internal));
+                __Instance = (nint)__NativeMemory.AlignedAlloc((nuint)sizeof(global::Std.Allocator.__Internal), 16);
                 __ownsNativeInstance = true;
                 __RecordNativeToManagedMapping(__Instance, this);
                 global::Std.Allocator.__Internal.ctorc__N_std_N___1_S_allocator__C(__Instance);
@@ -290,7 +291,7 @@ internal protected virtual void Dispose(bool disposing, bool callNativeDtor)
             NativeToManagedMap.TryRemove(__Instance, out _);
             DisposePartial(disposing);
             if (__ownsNativeInstance)
-                Marshal.FreeHGlobal(__Instance);
+                __NativeMemory.AlignedFree((void*)__Instance);
             __Instance = IntPtr.Zero;
         }
     }
@@ -439,7 +440,7 @@ internal static BasicString<_CharT, _Traits, _Allocator> __CreateInstance(global
 
         private static void* __CopyValue(global::Std.BasicString.__Internalc__N_std_N___1_S_basic_string__C___N_std_N___1_S_char_traits__C___N_std_N___1_S_allocator__C native)
         {
-            var ret = Marshal.AllocHGlobal(sizeof(global::Std.BasicString.__Internalc__N_std_N___1_S_basic_string__C___N_std_N___1_S_char_traits__C___N_std_N___1_S_allocator__C));
+            var ret = (nint)__NativeMemory.AlignedAlloc((nuint)sizeof(global::Std.BasicString.__Internalc__N_std_N___1_S_basic_string__C___N_std_N___1_S_char_traits__C___N_std_N___1_S_allocator__C), 16);
             *(global::Std.BasicString.__Internalc__N_std_N___1_S_basic_string__C___N_std_N___1_S_char_traits__C___N_std_N___1_S_allocator__C*) ret = native;
             return ret.ToPointer();
         }
@@ -465,7 +466,7 @@ public BasicString()
             var ___Allocator = typeof(_Allocator);
             if (___CharT.IsAssignableFrom(typeof(sbyte)) && ___Traits.IsAssignableFrom(typeof(global::Std.CharTraits<sbyte>)) && ___Allocator.IsAssignableFrom(typeof(global::Std.Allocator<sbyte>)))
             {
-                __Instance = Marshal.AllocHGlobal(sizeof(global::Std.BasicString.__Internalc__N_std_N___1_S_basic_string__C___N_std_N___1_S_char_traits__C___N_std_N___1_S_allocator__C));
+                __Instance = (nint)__NativeMemory.AlignedAlloc((nuint)sizeof(global::Std.BasicString.__Internalc__N_std_N___1_S_basic_string__C___N_std_N___1_S_char_traits__C___N_std_N___1_S_allocator__C), 16);
                 __ownsNativeInstance = true;
                 __RecordNativeToManagedMapping(__Instance, this);
                 global::Std.BasicString.__Internalc__N_std_N___1_S_basic_string__C___N_std_N___1_S_char_traits__C___N_std_N___1_S_allocator__C.ctorc__N_std_N___1_S_basic_string__C___N_std_N___1_S_char_traits__C___N_std_N___1_S_allocator__C(__Instance);
@@ -499,7 +500,7 @@ internal protected virtual void Dispose(bool disposing, bool callNativeDtor)
                 throw new ArgumentOutOfRangeException("_CharT, _Traits, _Allocator", string.Join(", ", new[] { typeof(_CharT).FullName, typeof(_Traits).FullName, typeof(_Allocator).FullName }), "global::Std.BasicString<_CharT, _Traits, _Allocator> maps a C++ template class and therefore it only supports a limited set of types and their subclasses: <sbyte, global::Std.CharTraits<sbyte>, global::Std.Allocator<sbyte>>.");
             }
             if (__ownsNativeInstance)
-                Marshal.FreeHGlobal(__Instance);
+                __NativeMemory.AlignedFree((void*)__Instance);
             __Instance = IntPtr.Zero;
         }
     }