11cb0ef41Sopenharmony_ci// Copyright 2020 the V8 project authors. All rights reserved.
21cb0ef41Sopenharmony_ci// Use of this source code is governed by a BSD-style license that can be
31cb0ef41Sopenharmony_ci// found in the LICENSE file.
41cb0ef41Sopenharmony_ci
51cb0ef41Sopenharmony_ci#ifndef INCLUDE_CPPGC_MACROS_H_
61cb0ef41Sopenharmony_ci#define INCLUDE_CPPGC_MACROS_H_
71cb0ef41Sopenharmony_ci
81cb0ef41Sopenharmony_ci#include <cstddef>
91cb0ef41Sopenharmony_ci
101cb0ef41Sopenharmony_ci#include "cppgc/internal/compiler-specific.h"
111cb0ef41Sopenharmony_ci
121cb0ef41Sopenharmony_cinamespace cppgc {
131cb0ef41Sopenharmony_ci
141cb0ef41Sopenharmony_ci// Use CPPGC_STACK_ALLOCATED if the object is only stack allocated.
151cb0ef41Sopenharmony_ci// Add the CPPGC_STACK_ALLOCATED_IGNORE annotation on a case-by-case basis when
161cb0ef41Sopenharmony_ci// enforcement of CPPGC_STACK_ALLOCATED should be suppressed.
171cb0ef41Sopenharmony_ci#if defined(__clang__)
181cb0ef41Sopenharmony_ci#define CPPGC_STACK_ALLOCATED()                        \
191cb0ef41Sopenharmony_ci public:                                               \
201cb0ef41Sopenharmony_ci  using IsStackAllocatedTypeMarker CPPGC_UNUSED = int; \
211cb0ef41Sopenharmony_ci                                                       \
221cb0ef41Sopenharmony_ci private:                                              \
231cb0ef41Sopenharmony_ci  void* operator new(size_t) = delete;                 \
241cb0ef41Sopenharmony_ci  void* operator new(size_t, void*) = delete;          \
251cb0ef41Sopenharmony_ci  static_assert(true, "Force semicolon.")
261cb0ef41Sopenharmony_ci#define CPPGC_STACK_ALLOCATED_IGNORE(bug_or_reason) \
271cb0ef41Sopenharmony_ci  __attribute__((annotate("stack_allocated_ignore")))
281cb0ef41Sopenharmony_ci#else  // !defined(__clang__)
291cb0ef41Sopenharmony_ci#define CPPGC_STACK_ALLOCATED() static_assert(true, "Force semicolon.")
301cb0ef41Sopenharmony_ci#define CPPGC_STACK_ALLOCATED_IGNORE(bug_or_reason)
311cb0ef41Sopenharmony_ci#endif  // !defined(__clang__)
321cb0ef41Sopenharmony_ci
331cb0ef41Sopenharmony_ci}  // namespace cppgc
341cb0ef41Sopenharmony_ci
351cb0ef41Sopenharmony_ci#endif  // INCLUDE_CPPGC_MACROS_H_
36