| /*! \file write_queue.h |
| * Generic write queue implementation */ |
| /* |
| * (C) 2010 by Holger Hans Peter Freyther |
| * (C) 2010 by On-Waves |
| * |
| * All Rights Reserved |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 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, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| */ |
| #pragma once |
| |
| /*! \defgroup write_queue Osmocom msgb write queues |
| * @{ |
| * \file write_queue.h */ |
| |
| #include <osmocom/core/select.h> |
| #include <osmocom/core/msgb.h> |
| |
| /*! write queue instance */ |
| struct osmo_wqueue { |
| /*! osmocom file descriptor */ |
| struct osmo_fd bfd; |
| /*! maximum length of write queue */ |
| unsigned int max_length; |
| /*! current length of write queue */ |
| unsigned int current_length; |
| |
| /*! actual linked list implementing the queue */ |
| struct llist_head msg_queue; |
| |
| /*! call-back in case qeueue is readable. Return -EBADF if fd is freed inside cb. */ |
| int (*read_cb)(struct osmo_fd *fd); |
| /*! call-back in case qeueue is writable. Return -EBADF if fd is freed inside cb. */ |
| int (*write_cb)(struct osmo_fd *fd, struct msgb *msg); |
| /*! call-back in case qeueue has exceptions. Return -EBADF if fd is freed inside cb. */ |
| int (*except_cb)(struct osmo_fd *fd); |
| }; |
| |
| void osmo_wqueue_init(struct osmo_wqueue *queue, int max_length); |
| void osmo_wqueue_clear(struct osmo_wqueue *queue); |
| int osmo_wqueue_enqueue(struct osmo_wqueue *queue, struct msgb *data); |
| int osmo_wqueue_enqueue_quiet(struct osmo_wqueue *queue, struct msgb *data); |
| int osmo_wqueue_bfd_cb(struct osmo_fd *fd, unsigned int what); |
| |
| /*! @} */ |