lib: value.c: remove BT_VALUE_FROM_CONCRETE() macro
[babeltrace.git] / include / babeltrace / babeltrace-internal.h
1 #ifndef _BABELTRACE_INTERNAL_H
2 #define _BABELTRACE_INTERNAL_H
3
4 /*
5 * Copyright 2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 */
25 #include <stdio.h>
26 #include <glib.h>
27 #include <stdint.h>
28 #include <stdlib.h>
29 #include <stdbool.h>
30 #include <errno.h>
31 #include <babeltrace/compat/string-internal.h>
32 #include <babeltrace/types.h>
33
34 #define PERROR_BUFLEN 200
35
36 #ifndef likely
37 # ifdef __GNUC__
38 # define likely(x) __builtin_expect(!!(x), 1)
39 # else
40 # define likely(x) (!!(x))
41 # endif
42 #endif
43
44 #ifndef unlikely
45 # ifdef __GNUC__
46 # define unlikely(x) __builtin_expect(!!(x), 0)
47 # else
48 # define unlikely(x) (!!(x))
49 # endif
50 #endif
51
52 #ifndef min
53 #define min(a, b) (((a) < (b)) ? (a) : (b))
54 #endif
55
56 #ifndef max
57 #define max(a, b) (((a) > (b)) ? (a) : (b))
58 #endif
59
60 #ifndef max_t
61 #define max_t(type, a, b) \
62 ((type) (a) > (type) (b) ? (type) (a) : (type) (b))
63 #endif
64
65 static inline
66 bool bt_safe_to_mul_int64(int64_t a, int64_t b)
67 {
68 if (a == 0 || b == 0) {
69 return true;
70 }
71
72 return a < INT64_MAX / b;
73 }
74
75 static inline
76 bool bt_safe_to_mul_uint64(uint64_t a, uint64_t b)
77 {
78 if (a == 0 || b == 0) {
79 return true;
80 }
81
82 return a < UINT64_MAX / b;
83 }
84
85 static inline
86 bool bt_safe_to_add_int64(int64_t a, int64_t b)
87 {
88 return a <= INT64_MAX - b;
89 }
90
91 static inline
92 bool bt_safe_to_add_uint64(uint64_t a, uint64_t b)
93 {
94 return a <= UINT64_MAX - b;
95 }
96
97 /*
98 * Memory allocation zeroed
99 */
100 #define zmalloc(x) calloc(1, x)
101
102 /*
103 * BT_HIDDEN: set the hidden attribute for internal functions
104 * On Windows, symbols are local unless explicitly exported,
105 * see https://gcc.gnu.org/wiki/Visibility
106 */
107 #if defined(_WIN32) || defined(__CYGWIN__)
108 #define BT_HIDDEN
109 #else
110 #define BT_HIDDEN __attribute__((visibility("hidden")))
111 #endif
112
113 #ifndef __STRINGIFY
114 #define __STRINGIFY(x) #x
115 #endif
116
117 #define TOSTRING(x) __STRINGIFY(x)
118
119 #define BT_UNUSED __attribute__((unused))
120
121 #endif
This page took 0.037407 seconds and 4 git commands to generate.