| 1 | //===-- sanitizer_stackdepot.h ----------------------------------*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // This file is shared between AddressSanitizer and ThreadSanitizer |
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| 10 | // run-time libraries. |
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| 11 | //===----------------------------------------------------------------------===// |
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| 12 | |
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| 13 | #ifndef SANITIZER_STACKDEPOT_H |
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| 14 | #define SANITIZER_STACKDEPOT_H |
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| 15 | |
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| 16 | #include "sanitizer_common.h" |
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| 17 | #include "sanitizer_internal_defs.h" |
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| 18 | #include "sanitizer_stacktrace.h" |
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| 19 | |
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| 20 | namespace __sanitizer { |
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| 21 | |
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| 22 | // StackDepot efficiently stores huge amounts of stack traces. |
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| 23 | struct StackDepotNode; |
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| 24 | struct StackDepotHandle { |
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| 25 | StackDepotNode *node_ = nullptr; |
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| 26 | u32 id_ = 0; |
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| 27 | StackDepotHandle(StackDepotNode *node, u32 id) : node_(node), id_(id) {} |
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| 28 | bool valid() const { return node_; } |
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| 29 | u32 id() const { return id_; } |
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| 30 | int use_count() const; |
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| 31 | void inc_use_count_unsafe(); |
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| 32 | }; |
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| 33 | |
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| 34 | const int kStackDepotMaxUseCount = 1U << (SANITIZER_ANDROID ? 16 : 20); |
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| 35 | |
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| 36 | StackDepotStats StackDepotGetStats(); |
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| 37 | u32 StackDepotPut(StackTrace stack); |
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| 38 | StackDepotHandle StackDepotPut_WithHandle(StackTrace stack); |
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| 39 | // Retrieves a stored stack trace by the id. |
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| 40 | StackTrace StackDepotGet(u32 id); |
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| 41 | |
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| 42 | void StackDepotLockBeforeFork(); |
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| 43 | void StackDepotUnlockAfterFork(bool fork_child); |
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| 44 | void StackDepotPrintAll(); |
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| 45 | void StackDepotStopBackgroundThread(); |
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| 46 | |
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| 47 | void StackDepotTestOnlyUnmap(); |
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| 48 | |
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| 49 | } // namespace __sanitizer |
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| 50 | |
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| 51 | #endif // SANITIZER_STACKDEPOT_H |
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| 52 | |
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