199     display_sample_func_t func;  member
207   void AddDisplayFunction(const std::string& name, display_sample_func_t func) {  in AddDisplayFunction()  argument
211     item.func = func;  in AddDisplayFunction()
221     item.func = nullptr;  in AddDisplayFunction()
226   void AddExclusiveDisplayFunction(exclusive_display_sample_func_t func) {  in AddExclusiveDisplayFunction()  argument
227     exclusive_display_v_.push_back(func);  in AddExclusiveDisplayFunction()
235       std::string data = (item.func != nullptr)  in AdjustWidth()
236                              ? item.func(sample)  in AdjustWidth()
260       std::string data = (item.func != nullptr)  in PrintSample()
261                              ? item.func(sample)  in PrintSample()
278     for (auto& func : exclusive_display_v_) {  in PrintSample()
279       func(fp, sample);  in PrintSample()