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/* $OpenBSD: accept.c,v 1.1 2012/11/13 17:10:40 yasuoka Exp $ */ |
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/* |
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* Copyright (c) 2012 Claudio Jeker <claudio@openbsd.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <sys/queue.h> |
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#include <sys/time.h> |
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#include <event.h> |
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#include <stdlib.h> |
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#include "accept.h" |
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#include "log.h" |
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struct accept_ev { |
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LIST_ENTRY(accept_ev) entry; |
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struct event ev; |
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void (*accept_cb)(int, short, void *); |
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void *arg; |
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int fd; |
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}; |
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struct { |
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LIST_HEAD(, accept_ev) queue; |
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struct event evt; |
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} accept_queue; |
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void accept_arm(void); |
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void accept_unarm(void); |
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void accept_cb(int, short, void *); |
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void accept_timeout(int, short, void *); |
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void |
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accept_init(void) |
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{ |
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LIST_INIT(&accept_queue.queue); |
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evtimer_set(&accept_queue.evt, accept_timeout, NULL); |
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} |
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int |
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accept_add(int fd, void (*cb)(int, short, void *), void *arg) |
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{ |
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struct accept_ev *av; |
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if ((av = calloc(1, sizeof(*av))) == NULL) |
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return -1; |
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av->fd = fd; |
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av->accept_cb = cb; |
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av->arg = arg; |
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LIST_INSERT_HEAD(&accept_queue.queue, av, entry); |
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event_set(&av->ev, av->fd, EV_READ, accept_cb, av); |
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event_add(&av->ev, NULL); |
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log_debug("accept_add: accepting on fd %d", fd); |
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return (0); |
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} |
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void |
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accept_del(int fd) |
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{ |
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struct accept_ev *av; |
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LIST_FOREACH(av, &accept_queue.queue, entry) |
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if (av->fd == fd) { |
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log_debug("accept_del: %i removed from queue", fd); |
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event_del(&av->ev); |
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LIST_REMOVE(av, entry); |
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free(av); |
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return; |
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} |
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} |
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void |
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accept_pause(void) |
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{ |
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struct timeval evtpause = { 1, 0 }; |
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log_debug("accept_pause"); |
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accept_unarm(); |
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evtimer_add(&accept_queue.evt, &evtpause); |
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} |
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void |
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accept_unpause(void) |
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{ |
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if (evtimer_pending(&accept_queue.evt, NULL)) { |
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log_debug("accept_unpause"); |
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evtimer_del(&accept_queue.evt); |
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accept_arm(); |
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} |
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} |
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void |
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accept_arm(void) |
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{ |
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struct accept_ev *av; |
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LIST_FOREACH(av, &accept_queue.queue, entry) |
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event_add(&av->ev, NULL); |
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} |
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void |
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accept_unarm(void) |
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{ |
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struct accept_ev *av; |
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LIST_FOREACH(av, &accept_queue.queue, entry) |
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event_del(&av->ev); |
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} |
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void |
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accept_cb(int fd, short event, void *arg) |
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{ |
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struct accept_ev *av = arg; |
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event_add(&av->ev, NULL); |
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av->accept_cb(fd, event, av->arg); |
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} |
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void |
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accept_timeout(int fd, short event, void *bula) |
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{ |
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log_debug("accept_timeout"); |
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accept_arm(); |
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} |