| Mike Klein | 0554d49 | 2017-12-06 12:27:44 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #ifndef SkVptr_DEFINED |
| 9 | #define SkVptr_DEFINED |
| 10 | |
| 11 | #include <string.h> |
| 12 | #include <type_traits> |
| 13 | |
| 14 | // Experimentally, see if we can get at the vptr of objects with one. |
| 15 | |
| 16 | template <typename T> |
| 17 | static inline void* SkVptr(const T& object) { |
| 18 | static_assert(std::has_virtual_destructor<T>::value, ""); |
| 19 | void* vptr; |
| 20 | memcpy(&vptr, (const void*)&object, sizeof(vptr)); |
| 21 | return vptr; |
| 22 | } |
| 23 | |
| 24 | #endif//SkVptr_DEFINED |