36     if (!pid.has_value()) return;  in ~CommandResult()
37     if (*pid == 0) {  in ~CommandResult()
42     ALOGE_IF(kill(*pid, SIGKILL) != 0, "kill(%d): %s", *pid, strerror(errno));  in ~CommandResult()
44     while (pid.has_value()) {  in ~CommandResult()
46         LOG_HOST("%s: Waiting for PID %d to exit.", __PRETTY_FUNCTION__, *pid);  in ~CommandResult()
47         int waitres = waitpid(*pid, &status, 0);  in ~CommandResult()
49             ALOGE("%s: waitpid(%d): %s", __PRETTY_FUNCTION__, *pid, strerror(errno));  in ~CommandResult()
53             LOG_HOST("%s: PID %d exited.", __PRETTY_FUNCTION__, *pid);  in ~CommandResult()
54             pid.reset();  in ~CommandResult()
56             LOG_HOST("%s: PID %d terminated by signal %d.", __PRETTY_FUNCTION__, *pid,  in ~CommandResult()
58             pid.reset();  in ~CommandResult()
60             ALOGW("%s: pid %d stopped", __PRETTY_FUNCTION__, *pid);  in ~CommandResult()
62             ALOGW("%s: pid %d continued", __PRETTY_FUNCTION__, *pid);  in ~CommandResult()
70     if (res.pid) os << ", pid=" << *res.pid;  in operator <<()
100     int pid = fork();  in execute()  local
101     if (pid == -1) {  in execute()
105     if (pid == 0) {  in execute()
124     ret.pid = pid;  in execute()
173     while (ret.pid.has_value()) {  in execute()
175         auto exitPid = waitpid(pid, &status, 0);  in execute()
177             PLOGE("waitpid(%d)", pid);  in execute()
180         if (exitPid == pid) {  in execute()
182                 ret.pid = std::nullopt;  in execute()
185                 ret.pid = std::nullopt;  in execute()
188                 ALOGW("%s: pid %d stopped", __PRETTY_FUNCTION__, *ret.pid);  in execute()
190                 ALOGW("%s: pid %d continued", __PRETTY_FUNCTION__, *ret.pid);  in execute()