libcounter/shm_types.h

   1 #ifndef _LIBCOUNTER_SHM_TYPES_H
   2 #define _LIBCOUNTER_SHM_TYPES_H
   3
   4 /*
   5  * libcounter/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 <stddef.h>
  26 #include <limits.h>
  27 #include "shm_internal.h"
  28
  29 enum lttng_counter_shm_object_type {
  30         LTTNG_COUNTER_SHM_OBJECT_SHM,
  31         LTTNG_COUNTER_SHM_OBJECT_MEM,
  32 };
  33
  34 struct lttng_counter_shm_object {
  35         enum lttng_counter_shm_object_type type;
  36         size_t index;   /* within the object table */
  37         int shm_fd;     /* shm fd */
  38         char *memory_map;
  39         size_t memory_map_size;
  40         uint64_t allocated_len;
  41         int shm_fd_ownership;
  42 };
  43
  44 struct lttng_counter_shm_object_table {
  45         size_t size;
  46         size_t allocated_len;
  47         struct lttng_counter_shm_object objects[];
  48 };
  49
  50 struct lttng_counter_shm_handle {
  51         struct lttng_counter_shm_object_table *table;
  52 };
  53
  54 #endif /* _LIBCOUNTER_SHM_TYPES_H */