1//===-- tsan_stack_trace.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 ThreadSanitizer (TSan), a race detector.
10//
11//===----------------------------------------------------------------------===//
12#ifndef TSAN_STACK_TRACE_H
13#define TSAN_STACK_TRACE_H
14
15#include "sanitizer_common/sanitizer_stacktrace.h"
16#include "tsan_defs.h"
17
18namespace __tsan {
19
20// StackTrace which calls malloc/free to allocate the buffer for
21// addresses in stack traces.
22struct VarSizeStackTrace : public StackTrace {
23  uptr *trace_buffer;  // Owned.
24
25  VarSizeStackTrace();
26  ~VarSizeStackTrace();
27  void Init(const uptr *pcs, uptr cnt, uptr extra_top_pc = 0);
28
29  // Reverses the current stack trace order, the top frame goes to the bottom,
30  // the last frame goes to the top.
31  void ReverseOrder();
32
33 private:
34  void ResizeBuffer(uptr new_size);
35
36  VarSizeStackTrace(const VarSizeStackTrace &);
37  void operator=(const VarSizeStackTrace &);
38};
39
40}  // namespace __tsan
41
42#endif  // TSAN_STACK_TRACE_H
43