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137 lines
2.8 KiB
C
137 lines
2.8 KiB
C
/* $OpenBSD$ */
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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 <zebra.h>
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#include "ldpd.h"
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#include "ldpe.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 thread *ev;
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int (*accept_cb)(struct thread *);
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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 thread *evt;
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} accept_queue;
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static void accept_arm(void);
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static void accept_unarm(void);
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static int accept_cb(struct thread *);
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static int accept_timeout(struct thread *);
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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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}
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int
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accept_add(int fd, int (*cb)(struct thread *), 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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av->ev = thread_add_read(master, accept_cb, av, av->fd);
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log_debug("%s: accepting on fd %d", __func__, 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("%s: %d removed from queue", __func__, fd);
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THREAD_READ_OFF(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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log_debug(__func__);
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accept_unarm();
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accept_queue.evt = thread_add_timer(master, accept_timeout, NULL, 1);
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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 (accept_queue.evt != NULL) {
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log_debug(__func__);
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THREAD_TIMER_OFF(accept_queue.evt);
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accept_arm();
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}
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}
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static 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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av->ev = thread_add_read(master, accept_cb, av, av->fd);
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}
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static 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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THREAD_READ_OFF(av->ev);
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}
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static int
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accept_cb(struct thread *thread)
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{
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struct accept_ev *av = THREAD_ARG(thread);
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av->ev = thread_add_read(master, accept_cb, av, av->fd);
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av->accept_cb(thread);
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return (0);
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}
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static int
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accept_timeout(struct thread *thread)
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{
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accept_queue.evt = NULL;
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log_debug(__func__);
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accept_arm();
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return (0);
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}
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