110   auto pid = pid_;  // Wait will set pid_ to -1 after waiting  in Wait()  local
121       LOG(ERROR) << "Subprocess " << pid  in Wait()
125     LOG(ERROR) << "Subprocess " << pid  in Wait()
145   auto pid = subprocess->pid();  in KillSubprocess()  local
146   if (pid > 0) {  in KillSubprocess()
147     auto pgid = getpgid(pid);  in KillSubprocess()
151                    << pid << ": " << strerror(error);  in KillSubprocess()
155     bool is_group_head = pid == pgid;  in KillSubprocess()
157       return killpg(pid, SIGKILL) == 0;  in KillSubprocess()
159       return kill(pid, SIGKILL) == 0;  in KillSubprocess()
245   pid_t pid = fork();  in Start()  local
246   if (!pid) {  in Start()
281   if (pid == -1) {  in Start()
285     LOG(DEBUG) << "Started (pid: " << pid << "): " << cmd[0];  in Start()
290     LOG(VERBOSE) << "Started (pid: " << pid << "): " << cmd[0];  in Start()
295   return Subprocess(pid, parent_socket, subprocess_stopper_);  in Start()