78   pid_t pid = fork();  in ExecWithoutWait()  local
79   if (pid == 0) {  in ExecWithoutWait()
97   } else if (pid == -1) {  in ExecWithoutWait()
103     return pid;  in ExecWithoutWait()
107 ExecResult WaitChild(pid_t pid,  in WaitChild()  argument
114   if (TEMP_FAILURE_RETRY(waitid(P_PID, pid, &info, options)) != 0) {  in WaitChild()
117                               pid,  in WaitChild()
121   if (info.si_pid != pid) {  in WaitChild()
124                               pid,  in WaitChild()
141 ExecResult WaitChildWithTimeoutFallback(pid_t pid,  in WaitChildWithTimeoutFallback()  argument
154       kill(pid, SIGKILL);  in WaitChildWithTimeoutFallback()
158   ExecResult result = WaitChild(pid, arg_vector, /*no_wait=*/true, error_msg);  in WaitChildWithTimeoutFallback()
180 ExecResult WaitChildWithTimeout(pid_t pid,  in WaitChildWithTimeout()  argument
186     kill(pid, SIGKILL);  in WaitChildWithTimeout()
188     WaitChild(pid, arg_vector, /*no_wait=*/true, &ignored_error_msg);  in WaitChildWithTimeout()
199     *error_msg = StringPrintf("poll failed for pid %d: %s", pid, strerror(errno));  in WaitChildWithTimeout()
211   return WaitChild(pid, arg_vector, /*no_wait=*/true, error_msg);  in WaitChildWithTimeout()
276   pid_t pid = ExecWithoutWait(arg_vector, new_process_group, error_msg);  in ExecAndReturnResult()  local
277   if (pid == -1) {  in ExecAndReturnResult()
281   callbacks.on_start(pid);  in ExecAndReturnResult()
286     unique_fd pidfd = PidfdOpen(pid);  in ExecAndReturnResult()
289           WaitChildWithTimeout(pid, std::move(pidfd), arg_vector, timeout_sec * 1000, error_msg);  in ExecAndReturnResult()
292           "pidfd_open failed for pid %d: %s, falling back", pid, strerror(errno));  in ExecAndReturnResult()
293       result = WaitChildWithTimeoutFallback(pid, arg_vector, timeout_sec * 1000, error_msg);  in ExecAndReturnResult()
296     result = WaitChild(pid, arg_vector, /*no_wait=*/true, error_msg);  in ExecAndReturnResult()
301     if (!GetStat(pid, stat, &local_error_msg)) {  in ExecAndReturnResult()
306   callbacks.on_end(pid);  in ExecAndReturnResult()
310   if (WaitChild(pid, arg_vector, /*no_wait=*/false, &local_error_msg).status ==  in ExecAndReturnResult()
333 unique_fd ExecUtils::PidfdOpen(pid_t pid) const { return art::PidfdOpen(pid, /*flags=*/0); }  in PidfdOpen()
335 std::string ExecUtils::GetProcStat(pid_t pid) const {  in GetProcStat()
337   if (!ReadFileToString(StringPrintf("/proc/%d/stat", pid), &stat_content)) {  in GetProcStat()
354 bool ExecUtils::GetStat(pid_t pid,  in GetStat()  argument
361   std::string stat_content = GetProcStat(pid);  in GetStat()
363     *error_msg = StringPrintf("Failed to read /proc/%d/stat: %s", pid, strerror(errno));  in GetStat()
368     *error_msg = StringPrintf("Failed to parse /proc/%d/stat '%s'", pid, stat_content.c_str());  in GetStat()