sys_rt_sigaction  148 base/process/launch_posix.cc     int sigaction_get_ret = sys_rt_sigaction(signum, NULL, &act);
sys_rt_sigaction  168 base/process/launch_posix.cc       if (sys_rt_sigaction(signum, &act, NULL)) {
sys_rt_sigaction  174 base/process/launch_posix.cc     if (sys_rt_sigaction(signum, NULL, &act) || act.k_sa_restorer) {