-#ifndef _LIBRINGBUFFER_SHM_H
-#define _LIBRINGBUFFER_SHM_H
-
/*
- * libringbuffer/shm.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_H
+#define _LIBRINGBUFFER_SHM_H
+
+#include <stddef.h>
#include <stdint.h>
+#include <unistd.h>
#include <usterr-signal-safe.h>
#include <urcu/compiler.h>
#include "shm_types.h"
+#include "ust-helper.h"
/* channel_handle_create - for UST. */
+LTTNG_HIDDEN
extern
struct lttng_ust_shm_handle *channel_handle_create(void *data,
uint64_t memory_map_size, int wakeup_fd);
/* channel_handle_add_stream - for UST. */
+LTTNG_HIDDEN
extern
int channel_handle_add_stream(struct lttng_ust_shm_handle *handle,
int shm_fd, int wakeup_fd, uint32_t stream_nr,
uint64_t memory_map_size);
+LTTNG_HIDDEN
unsigned int channel_handle_get_nr_streams(struct lttng_ust_shm_handle *handle);
+LTTNG_HIDDEN
extern
void channel_destroy(struct channel *chan, struct lttng_ust_shm_handle *handle,
int consumer);
#define set_shmp(ref, src) _set_shmp(&(ref)._ref, src)
+LTTNG_HIDDEN
struct shm_object_table *shm_object_table_create(size_t max_nb_obj);
+LTTNG_HIDDEN
struct shm_object *shm_object_table_alloc(struct shm_object_table *table,
size_t memory_map_size,
enum shm_object_type type,
- const char *shm_path);
+ const int stream_fd,
+ int cpu);
+LTTNG_HIDDEN
struct shm_object *shm_object_table_append_shm(struct shm_object_table *table,
int shm_fd, int wakeup_fd, uint32_t stream_nr,
size_t memory_map_size);
/* mem ownership is passed to shm_object_table_append_mem(). */
+LTTNG_HIDDEN
struct shm_object *shm_object_table_append_mem(struct shm_object_table *table,
void *mem, size_t memory_map_size, int wakeup_fd);
-void shm_object_table_destroy(struct shm_object_table *table);
+LTTNG_HIDDEN
+void shm_object_table_destroy(struct shm_object_table *table, int consumer);
/*
* zalloc_shm - allocate memory within a shm object.
* *NOT* multithread-safe (should be protected by mutex).
* Returns a -1, -1 tuple on error.
*/
+LTTNG_HIDDEN
struct shm_ref zalloc_shm(struct shm_object *obj, size_t len);
+LTTNG_HIDDEN
void align_shm(struct shm_object *obj, size_t align);
static inline