Initial version.
This commit is contained in:
Igor Sysoev
213
src/nxt_worker_process.c
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213
src/nxt_worker_process.c
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/*
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* Copyright (C) Igor Sysoev
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* Copyright (C) NGINX, Inc.
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*/
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#include <nxt_main.h>
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#include <nxt_cycle.h>
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#include <nxt_process_chan.h>
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#include <nxt_master_process.h>
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static void nxt_worker_process_quit(nxt_thread_t *thr);
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static void nxt_worker_process_quit_handler(nxt_thread_t *thr,
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nxt_chan_recv_msg_t *msg);
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static void nxt_worker_process_signal_handler(nxt_thread_t *thr, void *obj,
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void *data);
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static void nxt_worker_process_sigterm_handler(nxt_thread_t *thr, void *obj,
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void *data);
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static void nxt_worker_process_sigquit_handler(nxt_thread_t *thr, void *obj,
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void *data);
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static nxt_process_chan_handler_t nxt_worker_process_chan_handlers[] = {
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nxt_worker_process_quit_handler,
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nxt_process_chan_new_handler,
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nxt_process_chan_change_log_file_handler,
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nxt_process_chan_data_handler,
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};
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static const nxt_event_sig_t nxt_worker_process_signals[] = {
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nxt_event_signal(SIGHUP, nxt_worker_process_signal_handler),
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nxt_event_signal(SIGINT, nxt_worker_process_sigterm_handler),
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nxt_event_signal(SIGQUIT, nxt_worker_process_sigterm_handler),
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nxt_event_signal(SIGTERM, nxt_worker_process_sigquit_handler),
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nxt_event_signal(SIGCHLD, nxt_worker_process_signal_handler),
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nxt_event_signal(SIGUSR1, nxt_worker_process_signal_handler),
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nxt_event_signal(SIGUSR1, nxt_worker_process_signal_handler),
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nxt_event_signal_end,
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};
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void
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nxt_worker_process_start(void *data)
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{
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nxt_int_t n;
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nxt_cycle_t *cycle;
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nxt_thread_t *thr;
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nxt_process_chan_t *proc;
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const nxt_event_set_ops_t *event_set;
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cycle = data;
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nxt_thread_init_data(nxt_thread_cycle_data);
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nxt_thread_cycle_set(cycle);
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thr = nxt_thread();
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nxt_log_error(NXT_LOG_INFO, thr->log, "worker process");
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nxt_process_title("nginman: worker process");
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cycle->type = NXT_PROCESS_WORKER;
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nxt_random_init(&nxt_random_data);
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if (getuid() == 0) {
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/* Super-user. */
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n = nxt_user_cred_set(&cycle->user_cred);
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if (n != NXT_OK) {
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goto fail;
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}
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}
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/* Update inherited master process event engine and signals processing. */
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thr->engine->signals->sigev = nxt_worker_process_signals;
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event_set = nxt_service_get(cycle->services, "engine", cycle->engine);
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if (event_set == NULL) {
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goto fail;
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}
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if (nxt_event_engine_change(thr, event_set, cycle->batch) != NXT_OK) {
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goto fail;
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}
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#if 0
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if (nxt_cycle_listen_sockets_enable(thr, cycle) != NXT_OK) {
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goto fail;
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}
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#endif
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proc = cycle->processes->elts;
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/* A master process chan. */
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nxt_chan_read_close(proc[0].chan);
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nxt_chan_write_enable(thr, proc[0].chan);
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/* A worker process chan. */
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nxt_process_chan_create(thr, &proc[cycle->current_process],
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nxt_worker_process_chan_handlers);
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#if (NXT_THREADS)
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{
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nxt_int_t ret;
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ret = nxt_cycle_thread_pool_create(thr, cycle, cycle->auxiliary_threads,
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60000 * 1000000LL);
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if (nxt_slow_path(ret != NXT_OK)) {
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goto fail;
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}
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}
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nxt_app_start(cycle);
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#endif
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return;
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fail:
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exit(1);
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nxt_unreachable();
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}
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static void
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nxt_worker_process_quit(nxt_thread_t *thr)
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{
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nxt_uint_t n;
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nxt_cycle_t *cycle;
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nxt_queue_t *listen;
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nxt_queue_link_t *link, *next;
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nxt_listen_socket_t *ls;
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nxt_event_conn_listen_t *cls;
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cycle = nxt_thread_cycle();
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nxt_log_debug(thr->log, "close listen connections");
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listen = &thr->engine->listen_connections;
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for (link = nxt_queue_first(listen);
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link != nxt_queue_tail(listen);
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link = next)
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{
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next = nxt_queue_next(link);
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cls = nxt_queue_link_data(link, nxt_event_conn_listen_t, link);
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nxt_queue_remove(link);
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nxt_event_fd_close(thr->engine, &cls->socket);
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}
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if (cycle->listen_sockets != NULL) {
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ls = cycle->listen_sockets->elts;
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n = cycle->listen_sockets->nelts;
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while (n != 0) {
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nxt_socket_close(ls->socket);
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ls->socket = -1;
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ls++;
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n--;
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}
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cycle->listen_sockets->nelts = 0;
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}
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nxt_cycle_quit(thr, cycle);
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}
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static void
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nxt_worker_process_signal_handler(nxt_thread_t *thr, void *obj, void *data)
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{
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nxt_log_error(NXT_LOG_INFO, thr->log,
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"signal signo:%d (%s) recevied, ignored",
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(int) (uintptr_t) obj, data);
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}
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static void
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nxt_worker_process_quit_handler(nxt_thread_t *thr, nxt_chan_recv_msg_t *msg)
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{
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nxt_worker_process_quit(thr);
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}
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static void
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nxt_worker_process_sigterm_handler(nxt_thread_t *thr, void *obj, void *data)
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{
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nxt_log_debug(thr->log, "sigterm handler signo:%d (%s)",
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(int) (uintptr_t) obj, data);
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/* A fast exit. */
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nxt_cycle_quit(thr, NULL);
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}
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static void
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nxt_worker_process_sigquit_handler(nxt_thread_t *thr, void *obj, void *data)
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{
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nxt_log_debug(thr->log, "sigquit handler signo:%d (%s)",
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(int) (uintptr_t) obj, data);
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/* A graceful exit. */
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nxt_worker_process_quit(thr);
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}
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