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1//===-- sanitizer_stackdepot.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-exception6//7//===----------------------------------------------------------------------===//8//9// This file is shared between AddressSanitizer and ThreadSanitizer10// run-time libraries.11//===----------------------------------------------------------------------===//12 13#ifndef SANITIZER_STACKDEPOT_H14#define SANITIZER_STACKDEPOT_H15 16#include "sanitizer_common.h"17#include "sanitizer_internal_defs.h"18#include "sanitizer_stacktrace.h"19 20namespace __sanitizer {21 22// StackDepot efficiently stores huge amounts of stack traces.23struct StackDepotNode;24struct StackDepotHandle {25 StackDepotNode *node_ = nullptr;26 u32 id_ = 0;27 StackDepotHandle(StackDepotNode *node, u32 id) : node_(node), id_(id) {}28 bool valid() const { return node_; }29 u32 id() const { return id_; }30 int use_count() const;31 void inc_use_count_unsafe();32};33 34const int kStackDepotMaxUseCount = 1U << (SANITIZER_ANDROID ? 16 : 20);35 36StackDepotStats StackDepotGetStats();37u32 StackDepotPut(StackTrace stack);38StackDepotHandle StackDepotPut_WithHandle(StackTrace stack);39// Retrieves a stored stack trace by the id.40StackTrace StackDepotGet(u32 id);41 42void StackDepotLockBeforeFork();43void StackDepotUnlockAfterFork(bool fork_child);44void StackDepotPrintAll();45void StackDepotStopBackgroundThread();46 47void StackDepotTestOnlyUnmap();48 49} // namespace __sanitizer50 51#endif // SANITIZER_STACKDEPOT_H52