1 #ifndef _LTTNG_UST_TRACER_H
2 #define _LTTNG_UST_TRACER_H
5 * Copyright (C) 2005-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
7 * This contains the core definitions for the Linux Trace Toolkit.
9 * Copyright 2011-2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
11 * Permission is hereby granted, free of charge, to any person obtaining a copy
12 * of this software and associated documentation files (the "Software"), to deal
13 * in the Software without restriction, including without limitation the rights
14 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
15 * copies of the Software, and to permit persons to whom the Software is
16 * furnished to do so, subject to the following conditions:
18 * The above copyright notice and this permission notice shall be included in
19 * all copies or substantial portions of the Software.
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
24 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
25 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
26 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 #include <lttng/ust-config.h>
31 #include <lttng/ust-version.h>
33 #ifndef LTTNG_UST_HAVE_EFFICIENT_UNALIGNED_ACCESS
34 /* Align data on its natural alignment */
35 #define RING_BUFFER_ALIGN
42 #ifdef RING_BUFFER_ALIGN
43 #define lttng_alignof(type) __alignof__(type)
45 #define lttng_alignof(type) 1
48 #define lttng_is_signed_type(type) ((type) -1 < (type) 0)
50 #endif /* _LTTNG_UST_TRACER_H */
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