192 void WritePrefix(std::ostream& os, const char* prefix, bool odd) {  in WritePrefix()  argument
193   if (prefix != nullptr) {  in WritePrefix()
194     os << prefix;  in WritePrefix()
203            const char* prefix,  in Drain()  argument
252         WritePrefix(os, prefix, (*pipe)->odd);  in Drain()
279                const char* prefix,  in Addr2line()  argument
292       Drain(0, prefix, pipe, os);  in Addr2line()
324   Drain(2U, prefix, pipe, os);  in Addr2line()
498                 const char* prefix,  in DumpThread()  argument
509     LOG(ERROR) << prefix << "(failed to create Backtrace for thread " << tid << ")";  in DumpThread()
514     LOG(ERROR) << prefix << "(backtrace::Unwind failed for thread " << tid  in DumpThread()
519     LOG(ERROR) << prefix << "(no native stack frames for thread " << tid << ")";  in DumpThread()
528     oss << prefix << StringPrintf("#%02zu pc ", it->num);  in DumpThread()
564                            prefix,  in DumpThread()
570     addr2line::Drain(0, prefix, &addr2line_state, LOG_STREAM(ERROR));  in DumpThread()