| 1 | #ifndef _LTTNG_UST_TRACER_H |
| 2 | #define _LTTNG_UST_TRACER_H |
| 3 | |
| 4 | /* |
| 5 | * Copyright (C) 2005-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 6 | * |
| 7 | * This contains the core definitions for the Linux Trace Toolkit. |
| 8 | * |
| 9 | * Copyright 2011-2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 10 | * |
| 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: |
| 17 | * |
| 18 | * The above copyright notice and this permission notice shall be included in |
| 19 | * all copies or substantial portions of the Software. |
| 20 | * |
| 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 |
| 27 | * SOFTWARE. |
| 28 | */ |
| 29 | |
| 30 | #include <limits.h> |
| 31 | |
| 32 | #if defined (__cplusplus) |
| 33 | #include <type_traits> |
| 34 | #endif |
| 35 | |
| 36 | #include <lttng/ust-compiler.h> |
| 37 | #include <lttng/ust-config.h> |
| 38 | #include <lttng/ust-version.h> |
| 39 | |
| 40 | #ifndef LTTNG_UST_HAVE_EFFICIENT_UNALIGNED_ACCESS |
| 41 | /* Align data on its natural alignment */ |
| 42 | #define RING_BUFFER_ALIGN |
| 43 | #endif |
| 44 | |
| 45 | #ifndef CHAR_BIT |
| 46 | #define CHAR_BIT 8 |
| 47 | #endif |
| 48 | |
| 49 | #ifdef RING_BUFFER_ALIGN |
| 50 | #define lttng_alignof(type) __alignof__(type) |
| 51 | #else |
| 52 | #define lttng_alignof(type) 1 |
| 53 | #endif |
| 54 | |
| 55 | #define lttng_is_signed_type(type) ((type) -1 < (type) 0) |
| 56 | |
| 57 | /* |
| 58 | * This macro adds a compilation assertion that CTF arrays and sequences |
| 59 | * declared by the users are of an integral type. |
| 60 | */ |
| 61 | |
| 62 | #if defined(__cplusplus) |
| 63 | #define _lttng_is_integer(type) (std::is_integral<type>::value) |
| 64 | #else |
| 65 | #define _lttng_is_integer(type) (__builtin_types_compatible_p(type, _Bool) || \ |
| 66 | __builtin_types_compatible_p(type, char) || \ |
| 67 | __builtin_types_compatible_p(type, unsigned char) || \ |
| 68 | __builtin_types_compatible_p(type, short) || \ |
| 69 | __builtin_types_compatible_p(type, unsigned short) || \ |
| 70 | __builtin_types_compatible_p(type, int) || \ |
| 71 | __builtin_types_compatible_p(type, unsigned int) || \ |
| 72 | __builtin_types_compatible_p(type, long) || \ |
| 73 | __builtin_types_compatible_p(type, unsigned long) || \ |
| 74 | __builtin_types_compatible_p(type, long long) || \ |
| 75 | __builtin_types_compatible_p(type, unsigned long long)) |
| 76 | #endif |
| 77 | |
| 78 | #define _lttng_array_element_type_is_supported(_type, _item) \ |
| 79 | lttng_static_assert(_lttng_is_integer(_type), \ |
| 80 | "Non-integer type `" #_item "` not supported as element of CTF_ARRAY or CTF_SEQUENCE", \ |
| 81 | Non_integer_type__##_item##__not_supported_as_element_of_CTF_ARRAY_or_CTF_SEQUENCE); |
| 82 | |
| 83 | #endif /* _LTTNG_UST_TRACER_H */ |