1//===-- msan_chained_origin_depot.h -----------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file is a part of MemorySanitizer.
10//
11// A storage for chained origins.
12//===----------------------------------------------------------------------===//
13
14#ifndef MSAN_CHAINED_ORIGIN_DEPOT_H
15#define MSAN_CHAINED_ORIGIN_DEPOT_H
16
17#include "sanitizer_common/sanitizer_common.h"
18
19namespace __msan {
20
21// Gets the statistic of the origin chain storage.
22StackDepotStats ChainedOriginDepotGetStats();
23
24// Stores a chain with StackDepot ID here_id and previous chain ID prev_id.
25// If successful, returns true and the new chain id new_id.
26// If the same element already exists, returns false and sets new_id to the
27// existing ID.
28bool ChainedOriginDepotPut(u32 here_id, u32 prev_id, u32 *new_id);
29
30// Retrieves the stored StackDepot ID for the given origin ID.
31u32 ChainedOriginDepotGet(u32 id, u32 *other);
32
33void ChainedOriginDepotBeforeFork();
34void ChainedOriginDepotAfterFork(bool fork_child);
35
36} // namespace __msan
37
38#endif // MSAN_CHAINED_ORIGIN_DEPOT_H
39