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 |
40 | extern "C" |
41 | { |
42 | #endif |
43 | |
44 | struct 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 | */ |
54 | struct 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 | |