SIG_BLOCK 157 event/modules/ngx_rtsig_module.c if (sigprocmask(SIG_BLOCK, &set, NULL) == -1) { SIG_BLOCK 109 os/unix/ngx_process_cycle.c if (sigprocmask(SIG_BLOCK, &set, NULL) == -1) { SIG_BLOCK 1221 os/unix/ngx_process_cycle.c err = ngx_thread_sigmask(SIG_BLOCK, &set, NULL);