Move to kernel style SPDX license identifiers

[lttng-ust.git] / libringbuffer / backend.h

diff --git a/libringbuffer/backend.h b/libringbuffer/backend.h
index 1364d383f4006b7c9db851aeb0813d8e55cbd2b6..98c194ca5bf988603646071b778ac936b1add00d 100644 (file)
--- a/libringbuffer/backend.h
+++ b/libringbuffer/backend.h
@@ -1,31 +1,18 @@
-#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>
 
 /* Internal helpers */
@@ -71,7 +58,7 @@ lib_ring_buffer_read_offset_address(struct lttng_ust_lib_ring_buffer_backend *bu
  * backend-specific memcpy() operation. Calls the slow path (_ring_buffer_write)
  * if copy is crossing a page boundary.
  */
-static inline
+static inline __attribute__((always_inline))
 void lib_ring_buffer_write(const struct lttng_ust_lib_ring_buffer_config *config,
                           struct lttng_ust_lib_ring_buffer_ctx *ctx,
                           const void *src, size_t len)
@@ -106,7 +93,7 @@ void lib_ring_buffer_write(const struct lttng_ust_lib_ring_buffer_config *config
  * terminating character is found in @src. Returns the number of bytes
  * copied. Does *not* terminate @dest with NULL terminating character.
  */
-static inline
+static inline __attribute__((always_inline))
 size_t lib_ring_buffer_do_strcpy(const struct lttng_ust_lib_ring_buffer_config *config,
                char *dest, const char *src, size_t len)
 {
@@ -142,7 +129,7 @@ size_t lib_ring_buffer_do_strcpy(const struct lttng_ust_lib_ring_buffer_config *
  * character is found in @src before @len - 1 characters are copied, pad
  * the buffer with @pad characters (e.g. '#').
  */
-static inline
+static inline __attribute__((always_inline))
 void lib_ring_buffer_strcpy(const struct lttng_ust_lib_ring_buffer_config *config,
                           struct lttng_ust_lib_ring_buffer_ctx *ctx,
                           const char *src, size_t len, int pad)