shm_main.h revision 356345 
1/*
2 * util/shm_side/shm_main.h - control the shared memory for unbound.
3 *
4 * Copyright (c) 2007, NLnet Labs. All rights reserved.
5 *
6 * This software is open source.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * Redistributions of source code must retain the above copyright notice,
13 * this list of conditions and the following disclaimer.
14 *
15 * Redistributions in binary form must reproduce the above copyright notice,
16 * this list of conditions and the following disclaimer in the documentation
17 * and/or other materials provided with the distribution.
18 *
19 * Neither the name of the NLNET LABS nor the names of its contributors may
20 * be used to endorse or promote products derived from this software without
21 * specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
29 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 */
35
36/**
37 * \file
38 *
39 * This file contains functions for the SHM side.
40 */
41
42#ifndef UTIL_SHM_SIDE_MAIN_H
43#define UTIL_SHM_SIDE_MAIN_H
44struct daemon;
45struct worker;
46
47/* get struct ub_shm_stat_info */
48#include "libunbound/unbound.h"
49
50/**
51 * The SHM info.
52 */
53struct shm_main_info {
54	/** stats_info array, shared memory segment.
55	 * [0] is totals, [1..thread_num] are per-thread stats */
56	struct ub_stats_info* ptr_arr;
57	/** the global stats block, shared memory segment */
58	struct ub_shm_stat_info* ptr_ctl;
59	int key;
60	int id_ctl;
61	int id_arr;
62};
63
64int shm_main_init(struct daemon* daemon);
65void shm_main_shutdown(struct daemon* daemon);
66void shm_main_run(struct worker *worker);
67
68#endif /* UTIL_SHM_SIDE_MAIN_H */
69