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 #if defined (__cplusplus)
31 #include <type_traits>
34 #include <lttng/ust-compiler.h>
35 #include <lttng/ust-config.h>
36 #include <lttng/ust-version.h>
38 #ifndef LTTNG_UST_HAVE_EFFICIENT_UNALIGNED_ACCESS
39 /* Align data on its natural alignment */
40 #define RING_BUFFER_ALIGN
47 #ifdef RING_BUFFER_ALIGN
48 #define lttng_alignof(type) __alignof__(type)
50 #define lttng_alignof(type) 1
53 #define lttng_is_signed_type(type) ((type) -1 < (type) 0)
56 * This macro adds a compilation assertion that CTF arrays and sequences
57 * declared by the users are of an integral type.
60 #if defined(__cplusplus)
61 #define _lttng_is_integer(type) (std::is_integral<type>::value)
63 #define _lttng_is_integer(type) (__builtin_types_compatible_p(type, _Bool) || \
64 __builtin_types_compatible_p(type, char) || \
65 __builtin_types_compatible_p(type, unsigned char) || \
66 __builtin_types_compatible_p(type, short) || \
67 __builtin_types_compatible_p(type, unsigned short) || \
68 __builtin_types_compatible_p(type, int) || \
69 __builtin_types_compatible_p(type, unsigned int) || \
70 __builtin_types_compatible_p(type, long) || \
71 __builtin_types_compatible_p(type, unsigned long) || \
72 __builtin_types_compatible_p(type, long long) || \
73 __builtin_types_compatible_p(type, unsigned long long))
76 #define _lttng_array_element_type_is_supported(_type, _item) \
77 lttng_static_assert(_lttng_is_integer(_type), \
78 "Non-integer type `" #_item "` not supported as element of CTF_ARRAY or CTF_SEQUENCE", \
79 Non_integer_type__##_item##__not_supported_as_element_of_CTF_ARRAY_or_CTF_SEQUENCE);
81 #endif /* _LTTNG_UST_TRACER_H */
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