Cascoda SDK
Cascoda SDK for building software to run with CA-821x transceivers
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ca821x-queue.h
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1/*
2 * Copyright (c) 2017, Cascoda
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors
16 * may be used to endorse or promote products derived from this software without
17 * specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
36#ifndef CA821X_QUEUE_H
37#define CA821X_QUEUE_H
38
39#include <pthread.h>
40#include <stdint.h>
41#include <stdlib.h>
42
44
52void add_to_queue(struct buffer_queue *buffer_queue, const uint8_t *buf, size_t len, struct ca821x_dev *pDeviceRef);
53
59
69 uint8_t *destBuf,
70 size_t maxlen,
71 struct ca821x_dev **pDeviceRef_out);
72
79
86size_t wait_on_queue(struct buffer_queue *buffer_queue, time_t timeout_s);
87
94ca_error wait_on_queue_empty(struct buffer_queue *buffer_queue, time_t timeout_s);
95
96#endif
size_t peek_queue(struct buffer_queue *buffer_queue)
Non-blocking function returning the length of the next buffer on the queue (or 0 if nothing)
Definition ca821x-queue.c:125
void flush_queue(struct buffer_queue *buffer_queue)
Empty a queue into nothing.
Definition ca821x-queue.c:75
size_t wait_on_queue(struct buffer_queue *buffer_queue, time_t timeout_s)
Wait on a queue, blocking until there is something available.
Definition ca821x-queue.c:142
ca_error wait_on_queue_empty(struct buffer_queue *buffer_queue, time_t timeout_s)
Wait on a queue, blocking until it is empty.
Definition ca821x-queue.c:176
size_t pop_from_queue(struct buffer_queue *buffer_queue, uint8_t *destBuf, size_t maxlen, struct ca821x_dev **pDeviceRef_out)
Pop a buffer off a queue.
Definition ca821x-queue.c:91
void add_to_queue(struct buffer_queue *buffer_queue, const uint8_t *buf, size_t len, struct ca821x_dev *pDeviceRef)
Add a buffer onto the end of a queue.
Definition ca821x-queue.c:42
Various types used by the cascoda posix api.
ca_error
Cascoda error type.
Definition ca821x_error.h:51
Queue struct for singly-linked list of buffer_queue_items.
Definition ca821x-types.h:183
CA-821x Device reference struct.
Definition ca821x_api.h:123