| 1 | #ifndef _LIBRINGBUFFER_SHM_TYPES_H |
| 2 | #define _LIBRINGBUFFER_SHM_TYPES_H |
| 3 | |
| 4 | /* |
| 5 | * libringbuffer/shm_types.h |
| 6 | * |
| 7 | * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 8 | * |
| 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 |
| 22 | */ |
| 23 | |
| 24 | #include <stdint.h> |
| 25 | #include "shm_internal.h" |
| 26 | |
| 27 | struct channel; |
| 28 | |
| 29 | enum shm_object_type { |
| 30 | SHM_OBJECT_SHM, |
| 31 | SHM_OBJECT_MEM, |
| 32 | }; |
| 33 | |
| 34 | struct shm_object { |
| 35 | enum shm_object_type type; |
| 36 | size_t index; /* within the object table */ |
| 37 | int shm_fd; /* shm fd */ |
| 38 | int wait_fd[2]; /* fd for wait/wakeup */ |
| 39 | char *memory_map; |
| 40 | size_t memory_map_size; |
| 41 | uint64_t allocated_len; |
| 42 | }; |
| 43 | |
| 44 | struct shm_object_table { |
| 45 | size_t size; |
| 46 | size_t allocated_len; |
| 47 | struct shm_object objects[]; |
| 48 | }; |
| 49 | |
| 50 | struct lttng_ust_shm_handle { |
| 51 | struct shm_object_table *table; |
| 52 | DECLARE_SHMP(struct channel, chan); |
| 53 | }; |
| 54 | |
| 55 | #endif /* _LIBRINGBUFFER_SHM_TYPES_H */ |