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 
18 namespace __tsan {
19 
20 // StackTrace which calls malloc/free to allocate the buffer for
21 // addresses in stack traces.
22 struct 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