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