Function GTEST_LOCK_EXCLUDED_

tests/gtest/gtest-all.cc:5870–5917

std::string OsStackTraceGetter::CurrentStackTrace(int max_depth, int skip_count)
    GTEST_LOCK_EXCLUDED_(mutex_) {
#if GTEST_HAS_ABSL
  std::string result;

  if (max_depth <= 0) {
    return result;
  }

  max_depth = std::min(max_depth, kMaxStackTraceDepth);

  std::vector<void*> raw_stack(max_depth);
  // Skips the frames requested by the caller, plus this function.
  const int raw_stack_size =
      absl::GetStackTrace(&raw_stack[0], max_depth, skip_count + 1);

  void* caller_frame = nullptr;
  {
    MutexLock lock(&mutex_);
    caller_frame = caller_frame_;
  }

  for (int i = 0; i < raw_stack_size; ++i) {
    if (raw_stack[i] == caller_frame &&
        !GTEST_FLAG(show_internal_stack_frames)) {
      // Add a marker to the trace and stop adding frames.
      absl::StrAppend(&result, kElidedFramesMarker, "\n");
      break;
    }

    char tmp[1024];
    const char* symbol = "(unknown)";
    if (absl::Symbolize(raw_stack[i], tmp, sizeof(tmp))) {
      symbol = tmp;
    }

    char line[1024];
    snprintf(line, sizeof(line), "  %p: %s\n", raw_stack[i], symbol);
    result += line;
  }

  return result;

#else  // !GTEST_HAS_ABSL
  static_cast<void>(max_depth);
  static_cast<void>(skip_count);
  return "";
#endif  // GTEST_HAS_ABSL
}

void OsStackTraceGetter::UponLeavingGTest() GTEST_LOCK_EXCLUDED_(mutex_) {
#if GTEST_HAS_ABSL