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