compiler-rt/lib/msan/msan_chained_origin_depot.h

   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
  19 namespace __msan {
  20
  21 // Gets the statistic of the origin chain storage.
  22 StackDepotStats 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.
  28 bool ChainedOriginDepotPut(u32 here_id, u32 prev_id, u32 *new_id);
  29
  30 // Retrieves the stored StackDepot ID for the given origin ID.
  31 u32 ChainedOriginDepotGet(u32 id, u32 *other);
  32
  33 void ChainedOriginDepotBeforeFork();
  34 void ChainedOriginDepotAfterFork(bool fork_child);
  35
  36 }  // namespace __msan
  37
  38 #endif  // MSAN_CHAINED_ORIGIN_DEPOT_H