// 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 "src/base/macros.h" namespace heap { namespace base { class StackVisitor { public: virtual void VisitPointer(const void* address) = 0; }; // Abstraction over the stack. Supports handling of: // - native stack; // - ASAN/MSAN; // - SafeStack: https://releases.llvm.org/10.0.0/tools/clang/docs/SafeStack.html class V8_EXPORT_PRIVATE Stack final { public: explicit Stack(const void* stack_start); // Returns true if |slot| is part of the stack and false otherwise. bool IsOnStack(void* slot) const; // Word-aligned iteration of the stack. Slot values are passed on to // |visitor|. void IteratePointers(StackVisitor* visitor) const; // Returns the start of the stack. const void* stack_start() const { return stack_start_; } private: const void* stack_start_; }; } // namespace base } // namespace heap #endif // V8_HEAP_BASE_STACK_H_