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/*
* Copyright (C) Igor Sysoev
* Copyright (C) NGINX, Inc.
*/
#include <nxt_main.h>
static void nxt_event_conn_shutdown_socket(nxt_task_t *task, void *obj,
void *data);
static void nxt_event_conn_close_socket(nxt_task_t *task, void *obj,
void *data);
nxt_event_conn_io_t nxt_unix_event_conn_io = {
nxt_event_conn_io_connect,
nxt_event_conn_io_accept,
nxt_event_conn_io_read,
nxt_event_conn_io_recvbuf,
nxt_event_conn_io_recv,
nxt_event_conn_io_write,
nxt_event_conn_io_write_chunk,
#if (NXT_HAVE_LINUX_SENDFILE)
nxt_linux_event_conn_io_sendfile,
#elif (NXT_HAVE_FREEBSD_SENDFILE)
nxt_freebsd_event_conn_io_sendfile,
#elif (NXT_HAVE_MACOSX_SENDFILE)
nxt_macosx_event_conn_io_sendfile,
#elif (NXT_HAVE_SOLARIS_SENDFILEV)
nxt_solaris_event_conn_io_sendfilev,
#elif (NXT_HAVE_AIX_SEND_FILE)
nxt_aix_event_conn_io_send_file,
#elif (NXT_HAVE_HPUX_SENDFILE)
nxt_hpux_event_conn_io_sendfile,
#else
nxt_event_conn_io_sendbuf,
#endif
nxt_event_conn_io_writev,
nxt_event_conn_io_send,
nxt_event_conn_io_shutdown,
};
nxt_event_conn_t *
nxt_event_conn_create(nxt_mem_pool_t *mp, nxt_log_t *log)
{
nxt_thread_t *thr;
nxt_event_conn_t *c;
c = nxt_mem_zalloc(mp, sizeof(nxt_event_conn_t));
if (nxt_slow_path(c == NULL)) {
return NULL;
}
c->mem_pool = mp;
c->socket.fd = -1;
c->socket.log = &c->log;
c->log = *log;
/* The while loop skips possible uint32_t overflow. */
while (c->log.ident == 0) {
c->log.ident = nxt_task_next_ident();
}
thr = nxt_thread();
thr->engine->connections++;
c->task.thread = thr;
c->task.log = &c->log;
c->task.ident = c->log.ident;
c->socket.task = &c->task;
c->read_timer.task = &c->task;
c->write_timer.task = &c->task;
c->io = thr->engine->event->io;
c->max_chunk = NXT_INT32_T_MAX;
c->sendfile = NXT_CONN_SENDFILE_UNSET;
c->socket.read_work_queue = &thr->engine->fast_work_queue;
c->socket.write_work_queue = &thr->engine->fast_work_queue;
nxt_event_conn_timer_init(&c->read_timer, c, c->socket.read_work_queue);
nxt_event_conn_timer_init(&c->write_timer, c, c->socket.write_work_queue);
nxt_log_debug(&c->log, "event connections: %uD", thr->engine->connections);
return c;
}
void
nxt_event_conn_io_shutdown(nxt_task_t *task, void *obj, void *data)
{
int ret;
socklen_t len;
struct linger linger;
nxt_event_conn_t *c;
c = obj;
nxt_debug(task, "event conn shutdown");
if (c->socket.timedout) {
/*
* Resetting of timed out connection on close
* releases kernel memory associated with socket.
* This also causes sending TCP/IP RST to a peer.
*/
linger.l_onoff = 1;
linger.l_linger = 0;
len = sizeof(struct linger);
ret = setsockopt(c->socket.fd, SOL_SOCKET, SO_LINGER, &linger, len);
if (nxt_slow_path(ret != 0)) {
nxt_log(task, NXT_LOG_CRIT, "setsockopt(%d, SO_LINGER) failed %E",
c->socket.fd, nxt_socket_errno);
}
}
c->write_state->close_handler(task, c, data);
}
void
nxt_event_conn_close(nxt_task_t *task, nxt_event_conn_t *c)
{
nxt_thread_t *thr;
nxt_work_queue_t *wq;
nxt_event_engine_t *engine;
nxt_work_handler_t handler;
nxt_debug(task, "event conn close fd:%d", c->socket.fd);
thr = task->thread;
engine = thr->engine;
nxt_timer_delete(engine, &c->read_timer);
nxt_timer_delete(engine, &c->write_timer);
nxt_event_fd_close(engine, &c->socket);
engine->connections--;
nxt_debug(task, "event connections: %uD", engine->connections);
if (engine->batch != 0) {
if (c->socket.closed || c->socket.error != 0) {
wq = &engine->close_work_queue;
handler = nxt_event_conn_close_socket;
} else {
wq = &engine->shutdown_work_queue;
handler = nxt_event_conn_shutdown_socket;
}
nxt_work_queue_add(wq, handler, task,
(void *) (uintptr_t) c->socket.fd, NULL);
} else {
nxt_socket_close(c->socket.fd);
}
c->socket.fd = -1;
}
static void
nxt_event_conn_shutdown_socket(nxt_task_t *task, void *obj, void *data)
{
nxt_socket_t s;
s = (nxt_socket_t) (uintptr_t) obj;
nxt_socket_shutdown(s, SHUT_RDWR);
nxt_work_queue_add(&task->thread->engine->close_work_queue,
nxt_event_conn_close_socket, task,
(void *) (uintptr_t) s, NULL);
}
static void
nxt_event_conn_close_socket(nxt_task_t *task, void *obj, void *data)
{
nxt_socket_t s;
s = (nxt_socket_t) (uintptr_t) obj;
nxt_socket_close(s);
}
void
nxt_event_conn_timer(nxt_event_engine_t *engine, nxt_event_conn_t *c,
const nxt_event_conn_state_t *state, nxt_timer_t *tev)
{
nxt_msec_t timer;
if (state->timer_value != NULL) {
timer = state->timer_value(c, state->timer_data);
if (timer != 0) {
tev->handler = state->timer_handler;
nxt_timer_add(engine, tev, timer);
}
}
}
void
nxt_event_conn_work_queue_set(nxt_event_conn_t *c, nxt_work_queue_t *wq)
{
#if 0
nxt_thread_t *thr;
nxt_work_queue_t *owq;
thr = nxt_thread();
owq = c->socket.work_queue;
nxt_thread_work_queue_move(thr, owq, wq, c);
nxt_thread_work_queue_move(thr, owq, wq, &c->read_timer);
nxt_thread_work_queue_move(thr, owq, wq, &c->write_timer);
#endif
c->read_work_queue = wq;
c->write_work_queue = wq;
c->read_timer.work_queue = wq;
c->write_timer.work_queue = wq;
}
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