13cab2bb3Spatrick //===-- sanitizer_stackdepot.h ----------------------------------*- C++ -*-===// 23cab2bb3Spatrick // 33cab2bb3Spatrick // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 43cab2bb3Spatrick // See https://llvm.org/LICENSE.txt for license information. 53cab2bb3Spatrick // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 63cab2bb3Spatrick // 73cab2bb3Spatrick //===----------------------------------------------------------------------===// 83cab2bb3Spatrick // 93cab2bb3Spatrick // This file is shared between AddressSanitizer and ThreadSanitizer 103cab2bb3Spatrick // run-time libraries. 113cab2bb3Spatrick //===----------------------------------------------------------------------===// 123cab2bb3Spatrick 133cab2bb3Spatrick #ifndef SANITIZER_STACKDEPOT_H 143cab2bb3Spatrick #define SANITIZER_STACKDEPOT_H 153cab2bb3Spatrick 163cab2bb3Spatrick #include "sanitizer_common.h" 173cab2bb3Spatrick #include "sanitizer_internal_defs.h" 183cab2bb3Spatrick #include "sanitizer_stacktrace.h" 193cab2bb3Spatrick 203cab2bb3Spatrick namespace __sanitizer { 213cab2bb3Spatrick 223cab2bb3Spatrick // StackDepot efficiently stores huge amounts of stack traces. 233cab2bb3Spatrick struct StackDepotNode; 243cab2bb3Spatrick struct StackDepotHandle { 25*810390e3Srobert StackDepotNode *node_ = nullptr; 26*810390e3Srobert u32 id_ = 0; StackDepotHandleStackDepotHandle27*810390e3Srobert StackDepotHandle(StackDepotNode *node, u32 id) : node_(node), id_(id) {} validStackDepotHandle28*810390e3Srobert bool valid() const { return node_; } idStackDepotHandle29*810390e3Srobert u32 id() const { return id_; } 30*810390e3Srobert int use_count() const; 313cab2bb3Spatrick void inc_use_count_unsafe(); 323cab2bb3Spatrick }; 333cab2bb3Spatrick 343cab2bb3Spatrick const int kStackDepotMaxUseCount = 1U << (SANITIZER_ANDROID ? 16 : 20); 353cab2bb3Spatrick 36*810390e3Srobert StackDepotStats StackDepotGetStats(); 373cab2bb3Spatrick u32 StackDepotPut(StackTrace stack); 383cab2bb3Spatrick StackDepotHandle StackDepotPut_WithHandle(StackTrace stack); 393cab2bb3Spatrick // Retrieves a stored stack trace by the id. 403cab2bb3Spatrick StackTrace StackDepotGet(u32 id); 413cab2bb3Spatrick 423cab2bb3Spatrick void StackDepotLockAll(); 433cab2bb3Spatrick void StackDepotUnlockAll(); 44d89ec533Spatrick void StackDepotPrintAll(); 45*810390e3Srobert void StackDepotStopBackgroundThread(); 463cab2bb3Spatrick 47*810390e3Srobert void StackDepotTestOnlyUnmap(); 483cab2bb3Spatrick 493cab2bb3Spatrick } // namespace __sanitizer 503cab2bb3Spatrick 513cab2bb3Spatrick #endif // SANITIZER_STACKDEPOT_H 52