| //===-- sanitizer_chained_origin_depot.h ------------------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // A storage for chained origins. |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef SANITIZER_CHAINED_ORIGIN_DEPOT_H |
| #define SANITIZER_CHAINED_ORIGIN_DEPOT_H |
| |
| #include "sanitizer_common.h" |
| |
| namespace __sanitizer { |
| |
| class ChainedOriginDepot { |
| public: |
| ChainedOriginDepot(); |
| |
| // Gets the statistic of the origin chain storage. |
| StackDepotStats GetStats() const; |
| |
| // Stores a chain with StackDepot ID here_id and previous chain ID prev_id. |
| // If successful, returns true and the new chain id new_id. |
| // If the same element already exists, returns false and sets new_id to the |
| // existing ID. |
| bool Put(u32 here_id, u32 prev_id, u32 *new_id); |
| |
| // Retrieves the stored StackDepot ID for the given origin ID. |
| u32 Get(u32 id, u32 *other); |
| |
| void LockAll(); |
| void UnlockAll(); |
| |
| private: |
| ChainedOriginDepot(const ChainedOriginDepot &) = delete; |
| void operator=(const ChainedOriginDepot &) = delete; |
| }; |
| |
| } // namespace __sanitizer |
| |
| #endif // SANITIZER_CHAINED_ORIGIN_DEPOT_H |