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-exception 6// 7//===----------------------------------------------------------------------===// 8// 9// This file is shared between AddressSanitizer and ThreadSanitizer 10// run-time libraries. 11//===----------------------------------------------------------------------===// 12 13#ifndef SANITIZER_STACKDEPOT_H 14#define SANITIZER_STACKDEPOT_H 15 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 StackDepotLockAll(); 43void StackDepotUnlockAll(); 44void StackDepotPrintAll(); 45void StackDepotStopBackgroundThread(); 46 47void StackDepotTestOnlyUnmap(); 48 49} // namespace __sanitizer 50 51#endif // SANITIZER_STACKDEPOT_H 52