156   if (pipe(caller_to_addr2line) == -1) {  in Connect()
159   if (pipe(addr2line_to_caller) == -1) {  in Connect()
207            std::unique_ptr<Addr2linePipe>* pipe /* inout */,  in Drain()  argument
209   DCHECK(pipe != nullptr);  in Drain()
210   DCHECK(pipe->get() != nullptr);  in Drain()
211   int in = pipe->get()->in.get();  in Drain()
225       pipe->reset();  in Drain()
236       pipe->reset();  in Drain()
247       pipe->reset();  in Drain()
255         WritePrefix(os, prefix, (*pipe)->odd);  in Drain()
268         (*pipe)->odd = !(*pipe)->odd;  in Drain()
283                std::unique_ptr<Addr2linePipe>* pipe /* inout */) {  in Addr2line()  argument
284   DCHECK(pipe != nullptr);  in Addr2line()
293   if (*pipe == nullptr || (*pipe)->file != map_src) {  in Addr2line()
294     if (*pipe != nullptr) {  in Addr2line()
295       Drain(0, prefix, pipe, os);  in Addr2line()
297     pipe->reset();  // Close early.  in Addr2line()
308     *pipe = Connect(map_src, args);  in Addr2line()
311   Addr2linePipe* pipe_ptr = pipe->get();  in Addr2line()
322     pipe->reset();  in Addr2line()
327   Drain(2U, prefix, pipe, os);  in Addr2line()