projects / lttng-ust.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 { | |
| bf5ff35e CB |
30 | size_t index; /* within the object table */ |
| 31 | int shm_fd; /* shm fd */ | |
| 32 | char *shm_path; /* shm path */ | |
| 33 | int wait_fd[2]; /* fd for wait/wakeup */ | |
| 34 | char *wait_pipe_path; /* named pipe path for wait/wakeup */ | |
| 1d498196 | 35 | char *memory_map; |
| 7a784989 | 36 | int is_shadow; |
| 0cdad3b1 MD |
37 | size_t memory_map_size; |
| 38 | uint64_t allocated_len; | |
| 1d498196 MD |
39 | }; |
| 40 | ||
| 41 | struct shm_object_table { | |
| 42 | size_t size; | |
| 43 | size_t allocated_len; | |
| 44 | struct shm_object objects[]; | |
| 45 | }; | |
| 46 | ||
| 38fae1d3 | 47 | struct lttng_ust_shm_handle { |
| 1d498196 MD |
48 | struct shm_object_table *table; |
| 49 | DECLARE_SHMP(struct channel, chan); | |
| 50 | /* | |
| 51 | * In the consumer, chan points to a shadow copy, validated upon | |
| 52 | * reception. The chan object is overridden in the consumer to | |
| 53 | * point to this shadow copy. | |
| 54 | */ | |
| 55 | struct channel *shadow_chan; | |
| 56 | }; | |
| 57 | ||
| 58 | #endif /* _LIBRINGBUFFER_SHM_TYPES_H */ |