libsanitizer/tsan/tsan_stack_trace.h

   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