open5gs/lib/core/ogs-poll.c

134 lines
3.2 KiB
C

/*
* Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
*
* This file is part of Open5GS.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "core-config-private.h"
#include "ogs-core.h"
#include "ogs-poll-private.h"
extern const ogs_pollset_actions_t ogs_kqueue_actions;
extern const ogs_pollset_actions_t ogs_epoll_actions;
extern const ogs_pollset_actions_t ogs_select_actions;
static void *self_handler_data = NULL;
ogs_pollset_actions_t ogs_pollset_actions;
bool ogs_pollset_actions_initialized = false;
ogs_pollset_t *ogs_pollset_create(unsigned int capacity)
{
ogs_pollset_t *pollset = ogs_calloc(1, sizeof *pollset);
if (!pollset) {
ogs_error("ogs_calloc() failed");
return NULL;
}
pollset->capacity = capacity;
ogs_pool_init(&pollset->pool, capacity);
if (ogs_pollset_actions_initialized == false) {
#if defined(HAVE_KQUEUE)
ogs_pollset_actions = ogs_kqueue_actions;
#elif defined(HAVE_EPOLL)
ogs_pollset_actions = ogs_epoll_actions;
#else
ogs_pollset_actions = ogs_select_actions;
#endif
ogs_pollset_actions_initialized = true;
}
ogs_pollset_actions.init(pollset);
return pollset;
}
void ogs_pollset_destroy(ogs_pollset_t *pollset)
{
ogs_assert(pollset);
ogs_pollset_actions.cleanup(pollset);
ogs_pool_final(&pollset->pool);
ogs_free(pollset);
}
ogs_poll_t *ogs_pollset_add(ogs_pollset_t *pollset, short when,
ogs_socket_t fd, ogs_poll_handler_f handler, void *data)
{
ogs_poll_t *poll = NULL;
int rc;
ogs_assert(pollset);
ogs_assert(fd != INVALID_SOCKET);
ogs_assert(handler);
ogs_pool_alloc(&pollset->pool, &poll);
ogs_assert(poll);
rc = ogs_nonblocking(fd);
ogs_assert(rc == OGS_OK);
rc = ogs_closeonexec(fd);
ogs_assert(rc == OGS_OK);
poll->when = when;
poll->fd = fd;
poll->handler = handler;
if (data == &self_handler_data)
poll->data = poll;
else
poll->data = data;
poll->pollset = pollset;
rc = ogs_pollset_actions.add(poll);
if (rc != OGS_OK) {
ogs_error("cannot add poll");
ogs_pool_free(&pollset->pool, poll);
return NULL;
}
return poll;
}
void ogs_pollset_remove(ogs_poll_t *poll)
{
int rc;
ogs_pollset_t *pollset = NULL;
ogs_assert(poll);
pollset = poll->pollset;
ogs_assert(pollset);
rc = ogs_pollset_actions.remove(poll);
if (rc != OGS_OK) {
ogs_error("cannot delete poll");
}
ogs_pool_free(&pollset->pool, poll);
}
void *ogs_pollset_self_handler_data(void)
{
return &self_handler_data;
}