source: lib/data-struct/message_queue.h @ 49969f2

cachetimestampsdevelopetsiliverc-4.0.3rc-4.0.4ringdecrementfixringperformance
Last change on this file since 49969f2 was 49969f2, checked in by Shane Alcock <salcock@…>, 4 years ago

pthread_spinlock.h is now installed in the libtrace/ directory.

Fixes issues when users try to include libtrace/message_queue.h
or libtrace/ring_buffer.h in their own programs.

Also removed relative directory references in the aforementioned
header files.

  • Property mode set to 100644
File size: 1.8 KB
Line 
1/*
2 *
3 * Copyright (c) 2007-2016 The University of Waikato, Hamilton, New Zealand.
4 * All rights reserved.
5 *
6 * This file is part of libtrace.
7 *
8 * This code has been developed by the University of Waikato WAND
9 * research group. For further information please see http://www.wand.net.nz/
10 *
11 * libtrace is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU Lesser General Public License as published by
13 * the Free Software Foundation; either version 3 of the License, or
14 * (at your option) any later version.
15 *
16 * libtrace is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19 * GNU Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public License
22 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
23 *
24 *
25 */
26#include <pthread.h>
27#include <limits.h>
28#include "libtrace.h"
29#include "pthread_spinlock.h"
30
31#ifndef LIBTRACE_MESSAGE_QUEUE
32#define LIBTRACE_MESSAGE_QUEUE
33
34#define LIBTRACE_MQ_FAILED INT_MIN
35typedef struct libtrace_message_queue_t {
36        int pipefd[2];
37        volatile int message_count;
38        size_t message_len;
39        pthread_spinlock_t spin;
40} libtrace_message_queue_t;
41
42void libtrace_message_queue_init(libtrace_message_queue_t *mq, size_t message_len);
43int libtrace_message_queue_put(libtrace_message_queue_t *mq, const void *message);
44int libtrace_message_queue_count(const libtrace_message_queue_t *mq);
45int libtrace_message_queue_get(libtrace_message_queue_t *mq, void *message);
46int libtrace_message_queue_try_get(libtrace_message_queue_t *mq, void *message);
47void libtrace_message_queue_destroy(libtrace_message_queue_t *mq);
48int libtrace_message_queue_get_fd(libtrace_message_queue_t *mq);
49
50#endif
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