X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=libringbuffer%2Fbackend.h;h=dbb5d7353c878f670369f236f791971f664d691e;hb=071dec4386ff4c89d8b0f92ab1a8dbf079abd50c;hp=46022ad3c5767d7f46db917ee41d2f6e72a98c7b;hpb=00d0f8eb40e77bb8915be29c527f48fb7e006b61;p=lttng-ust.git

diff --git a/libringbuffer/backend.h b/libringbuffer/backend.h
index 46022ad3..dbb5d735 100644
--- a/libringbuffer/backend.h
+++ b/libringbuffer/backend.h
@@ -1,33 +1,22 @@
-#ifndef _LTTNG_RING_BUFFER_BACKEND_H
-#define _LTTNG_RING_BUFFER_BACKEND_H
-
 /*
- * libringbuffer/backend.h
- *
- * Ring buffer backend (API).
+ * 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
+ * Ring buffer backend (API).
  *
  * Credits to Steven Rostedt for proposing to use an extra-subbuffer owned by
  * the reader in flight recorder mode.
  */
 
+#ifndef _LTTNG_RING_BUFFER_BACKEND_H
+#define _LTTNG_RING_BUFFER_BACKEND_H
+
+#include <stddef.h>
 #include <unistd.h>
 
+#include "ust-helper.h"
+
 /* Internal helpers */
 #include "backend_internal.h"
 #include "frontend_internal.h"
@@ -36,10 +25,12 @@
 
 /* Ring buffer backend access (read/write) */
 
+LTTNG_HIDDEN
 extern size_t lib_ring_buffer_read(struct lttng_ust_lib_ring_buffer_backend *bufb,
 				   size_t offset, void *dest, size_t len,
 				   struct lttng_ust_shm_handle *handle);
 
+LTTNG_HIDDEN
 extern int lib_ring_buffer_read_cstr(struct lttng_ust_lib_ring_buffer_backend *bufb,
 				     size_t offset, void *dest, size_t len,
 				     struct lttng_ust_shm_handle *handle);
@@ -50,10 +41,12 @@ extern int lib_ring_buffer_read_cstr(struct lttng_ust_lib_ring_buffer_backend *b
  * it's never on a page boundary, it's safe to write directly to this address,
  * as long as the write is never bigger than a page size.
  */
+LTTNG_HIDDEN
 extern void *
 lib_ring_buffer_offset_address(struct lttng_ust_lib_ring_buffer_backend *bufb,
 			       size_t offset,
 			       struct lttng_ust_shm_handle *handle);
+LTTNG_HIDDEN
 extern void *
 lib_ring_buffer_read_offset_address(struct lttng_ust_lib_ring_buffer_backend *bufb,
 				    size_t offset,