chromium/v8/src/heap/base/stack.h

// Copyright 2020 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef V8_HEAP_BASE_STACK_H_
#define V8_HEAP_BASE_STACK_H_

#include <map>
#include <vector>

#include "src/base/macros.h"
#include "src/base/platform/platform.h"

namespace heap::base {

class StackVisitor { … };

#if defined(__has_feature)
#if __has_feature(safe_stack)
#define V8_USE_SAFE_STACK …
#endif  // __has_feature(safe_stack)
#endif  // defined(__has_feature)

// Abstraction over the stack. Supports handling of:
// - native stack;
// - ASAN/MSAN;
// - SafeStack: https://releases.llvm.org/10.0.0/tools/clang/docs/SafeStack.html
//
// Stacks grow down, so throughout this class "start" refers the highest
// address of the stack, and top/marker the lowest.
//
// TODO(chromium:1056170): Consider adding a component that keeps track
// of relevant GC stack regions where interesting pointers can be found.
class V8_EXPORT_PRIVATE Stack final { … };

}  // namespace heap::base

#endif  // V8_HEAP_BASE_STACK_H_