1/*
2 * Copyright (c) 2015, Intel Corporation
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * * Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of Intel Corporation nor the names of its contributors
13 * may be used to endorse or promote products derived from this software
14 * without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** \file
30 * \brief Stream state data structures.
31 */
32
33#ifndef STATE_H
34#define STATE_H
35
36#include "hs_runtime.h" /* match_event_handler */
37#include "ue2common.h"
38
39#ifdef __cplusplus
40extern "C"
41{
42#endif
43
44struct RoseEngine;
45
46/** \brief Stream context: allocated for each stream.
47 *
48 * struct hs_stream is followed in memory by the main Rose state: history,
49 * exhaustion, individual states, etc. The RoseEngine has the offsets required
50 * to correctly index into the main state structure. The offsets used by the
51 * RoseEngine are based on the end of the hs_stream struct as its size may
52 * vary from platform to platform.
53 */
54struct hs_stream {
55 /** \brief The RoseEngine that this stream is matching against. */
56 const struct RoseEngine *rose;
57
58 /** \brief The current stream offset. */
59 u64a offset;
60};
61
62#define getMultiState(hs_s) ((char *)(hs_s) + sizeof(*(hs_s)))
63#define getMultiStateConst(hs_s) ((const char *)(hs_s) + sizeof(*(hs_s)))
64
65#ifdef __cplusplus
66}
67#endif
68
69#endif
70