6f11a78079
Most of the time, an application wants to perform some amount of data buffering in addition to just responding to events. When we want to write data, for example, the usual pattern runs something like: 1. Decide that we want to write some data to a connection; put that data in a buffer. 2. Wait for the connection to become writable 3. Write as much of the data as we can 4. Remember how much we wrote, and if we still have more data to write, wait for the connection to become writable again. Now, Open5GS implements the above method by default when transmitting data in a stream type socket.
67 lines
2 KiB
C
67 lines
2 KiB
C
/*
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* Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
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*
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* This file is part of Open5GS.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#if !defined(OGS_CORE_INSIDE) && !defined(OGS_CORE_COMPILATION)
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#error "This header cannot be included directly."
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#endif
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#ifndef OGS_POLL_H
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#define OGS_POLL_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef void (*ogs_poll_handler_f)(short when, ogs_socket_t fd, void *data);
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ogs_pollset_t *ogs_pollset_create(unsigned int capacity);
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void ogs_pollset_destroy(ogs_pollset_t *pollset);
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#define OGS_POLLIN 0x01
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#define OGS_POLLOUT 0x02
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ogs_poll_t *ogs_pollset_add(ogs_pollset_t *pollset, short when,
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ogs_socket_t fd, ogs_poll_handler_f handler, void *data);
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void ogs_pollset_remove(ogs_poll_t *poll);
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ogs_poll_t *ogs_pollset_cycle(ogs_pollset_t *pollset, ogs_poll_t *poll);
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void *ogs_pollset_self_handler_data(void);
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typedef struct ogs_pollset_actions_s {
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void (*init)(ogs_pollset_t *pollset);
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void (*cleanup)(ogs_pollset_t *pollset);
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int (*add)(ogs_poll_t *poll);
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int (*remove)(ogs_poll_t *poll);
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int (*poll)(ogs_pollset_t *pollset, ogs_time_t timeout);
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int (*notify)(ogs_pollset_t *pollset);
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} ogs_pollset_actions_t;
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extern ogs_pollset_actions_t ogs_pollset_actions;
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#define ogs_pollset_poll ogs_pollset_actions.poll
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#define ogs_pollset_notify ogs_pollset_actions.notify
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#ifdef __cplusplus
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}
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#endif
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#endif /* OGS_POLL_H */
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