include: implement REUSE with SPDX identifiers

[lttng-ust.git] / include / lttng / ust-tracer.h

diff --git a/include/lttng/ust-tracer.h b/include/lttng/ust-tracer.h
index 234e75c084a2d47fbfe3226c63b06605875eb8d5..0094477ea635d9ba11879a88e08b43a1e0830890 100644 (file)
--- a/include/lttng/ust-tracer.h
+++ b/include/lttng/ust-tracer.h
@@ -1,47 +1,45 @@
-#ifndef _LTTNG_TRACER_H
-#define _LTTNG_TRACER_H
+// SPDX-FileCopyrightText: 2005-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+//
+// SPDX-License-Identifier: MIT
 
 /*
- * Copyright (C) 2005-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
  * This contains the core definitions for the Linux Trace Toolkit.
- *
- * 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; 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
  */
 
-#include <lttng/config.h>
-
-#ifndef HAVE_EFFICIENT_UNALIGNED_ACCESS
-/* Align data on its natural alignment */
-#define RING_BUFFER_ALIGN
-#endif
+#ifndef _LTTNG_UST_TRACER_H
+#define _LTTNG_UST_TRACER_H
 
-#define LTTNG_UST_VERSION 0
-#define LTTNG_UST_PATCHLEVEL 9
-#define LTTNG_UST_SUBLEVEL 1
+#include <lttng/ust-arch.h>
+#include <lttng/ust-compiler.h>
+#include <lttng/ust-utils.h>
+#include <lttng/ust-version.h>
 
-#ifndef CHAR_BIT
-#define CHAR_BIT 8
+/*
+ * On architectures without efficient unaligned accesses, the layout of
+ * the ringbuffer's content respects the natural alignment of the
+ * system. Only pack its content on architectures we know have efficient
+ * unaligned memory access.
+ *
+ * Whether to pack the ring buffer contents or not is part of the ABI
+ * between the probe providers and the tracer, and is selected by the
+ * lttng/ust-arch.h header.
+ */
+#ifndef LTTNG_UST_ARCH_HAS_EFFICIENT_UNALIGNED_ACCESS
+#define LTTNG_UST_RING_BUFFER_NATURAL_ALIGN
 #endif
 
-#ifdef RING_BUFFER_ALIGN
-#define lttng_alignof(type)    __alignof__(type)
+#ifdef LTTNG_UST_RING_BUFFER_NATURAL_ALIGN
+#define lttng_ust_rb_alignof(type)     __alignof__(type)
 #else
-#define lttng_alignof(type)    1
+#define lttng_ust_rb_alignof(type)     1
 #endif
 
-#define lttng_is_signed_type(type)           (((type)(-1)) < 0)
+/*
+ * Concatenate lttng ust shared libraries name with their major version number.
+ */
+#define LTTNG_UST_LIB_SONAME "liblttng-ust.so." lttng_ust_stringify(LTTNG_UST_LIB_SONAME_MAJOR)
+#define LTTNG_UST_TRACEPOINT_LIB_SONAME "liblttng-ust-tracepoint.so." lttng_ust_stringify(LTTNG_UST_LIB_SONAME_MAJOR)
+#define LTTNG_UST_CTL_LIB_SONAME "liblttng-ust-ctl.so." lttng_ust_stringify(LTTNG_UST_CTL_LIB_SONAME_MAJOR)
+
 
-#endif /* _LTTNG_TRACER_CORE_H */
+#endif /* _LTTNG_UST_TRACER_H */