-#ifndef _LIBRINGBUFFER_SHM_TYPES_H
-#define _LIBRINGBUFFER_SHM_TYPES_H
-
/*
- * libringbuffer/shm_types.h
+ * SPDX-License-Identifier: LGPL-2.1-only
*
* Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; only
- * version 2.1 of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#ifndef _LIBRINGBUFFER_SHM_TYPES_H
+#define _LIBRINGBUFFER_SHM_TYPES_H
+
#include <stdint.h>
+#include <stddef.h>
+#include <limits.h>
#include "shm_internal.h"
-struct channel;
+struct lttng_ust_lib_ring_buffer_channel;
+
+enum shm_object_type {
+ SHM_OBJECT_SHM,
+ SHM_OBJECT_MEM,
+};
struct shm_object {
+ enum shm_object_type type;
size_t index; /* within the object table */
int shm_fd; /* shm fd */
int wait_fd[2]; /* fd for wait/wakeup */
char *memory_map;
- int is_shadow;
size_t memory_map_size;
uint64_t allocated_len;
+ int shm_fd_ownership;
};
struct shm_object_table {
struct lttng_ust_shm_handle {
struct shm_object_table *table;
- DECLARE_SHMP(struct channel, chan);
- /*
- * In the consumer, chan points to a shadow copy, validated upon
- * reception. The chan object is overridden in the consumer to
- * point to this shadow copy.
- */
- struct channel *shadow_chan;
+ DECLARE_SHMP(struct lttng_ust_lib_ring_buffer_channel, chan);
};
#endif /* _LIBRINGBUFFER_SHM_TYPES_H */