| // 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_ |