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1d498196 MD |
1 | #ifndef _LIBRINGBUFFER_SHM_TYPES_H |
2 | #define _LIBRINGBUFFER_SHM_TYPES_H | |
3 | ||
4 | /* | |
5 | * libringbuffer/shm_types.h | |
6 | * | |
e92f3e28 | 7 | * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
1d498196 | 8 | * |
e92f3e28 MD |
9 | * This library is free software; you can redistribute it and/or |
10 | * modify it under the terms of the GNU Lesser General Public | |
11 | * License as published by the Free Software Foundation; only | |
12 | * version 2.1 of the License. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public | |
20 | * License along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
1d498196 MD |
22 | */ |
23 | ||
24 | #include <stdint.h> | |
25 | #include "shm_internal.h" | |
26 | ||
27 | struct channel; | |
28 | ||
29 | struct shm_object { | |
30 | size_t index; /* within the object table */ | |
31 | int shm_fd; /* shm fd */ | |
32 | int wait_fd[2]; /* fd for wait/wakeup */ | |
33 | char *memory_map; | |
7a784989 | 34 | int is_shadow; |
0cdad3b1 MD |
35 | size_t memory_map_size; |
36 | uint64_t allocated_len; | |
1d498196 MD |
37 | }; |
38 | ||
39 | struct shm_object_table { | |
40 | size_t size; | |
41 | size_t allocated_len; | |
42 | struct shm_object objects[]; | |
43 | }; | |
44 | ||
38fae1d3 | 45 | struct lttng_ust_shm_handle { |
1d498196 MD |
46 | struct shm_object_table *table; |
47 | DECLARE_SHMP(struct channel, chan); | |
48 | /* | |
49 | * In the consumer, chan points to a shadow copy, validated upon | |
50 | * reception. The chan object is overridden in the consumer to | |
51 | * point to this shadow copy. | |
52 | */ | |
53 | struct channel *shadow_chan; | |
54 | }; | |
55 | ||
56 | #endif /* _LIBRINGBUFFER_SHM_TYPES_H */ |