libosmocore  1.5.1
Osmocom core library
timer_compat.h
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1 
4 /*
5  * (C) 2011 Sylvain Munaut <tnt@246tNt.com>
6  * All Rights Reserved
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License along
19  * with this program; if not, write to the Free Software Foundation, Inc.,
20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21  *
22  */
23 
28 #pragma once
29 
30 /* MacOS < 10.12 Sierra does not define clockid_t */
31 #if defined(__APPLE__) && (!defined(__DARWIN_C_LEVEL) || __DARWIN_C_LEVEL < 199309L)
32 typedef int clockid_t;
33 #endif
34 
35 /* Convenience macros for operations on timevals.
36  NOTE: `timercmp' does not work for >= or <=. */
37 
38 #ifndef timerisset
39 # define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
40 #endif
41 
42 #ifndef timerclear
43 # define timerclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0)
44 #endif
45 
46 #ifndef timercmp
47 # define timercmp(a, b, CMP) \
48  (((a)->tv_sec == (b)->tv_sec) ? \
49  ((a)->tv_usec CMP (b)->tv_usec) : \
50  ((a)->tv_sec CMP (b)->tv_sec))
51 #endif
52 
53 #ifndef timeradd
54 # define timeradd(a, b, result) \
55  do { \
56  (result)->tv_sec = (a)->tv_sec + (b)->tv_sec; \
57  (result)->tv_usec = (a)->tv_usec + (b)->tv_usec; \
58  if ((result)->tv_usec >= 1000000) \
59  { \
60  ++(result)->tv_sec; \
61  (result)->tv_usec -= 1000000; \
62  } \
63  } while (0)
64 #endif
65 
66 #ifndef timersub
67 # define timersub(a, b, result) \
68  do { \
69  (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \
70  (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \
71  if ((result)->tv_usec < 0) { \
72  --(result)->tv_sec; \
73  (result)->tv_usec += 1000000; \
74  } \
75  } while (0)
76 #endif
77 
78 /* Convenience macros for operations on timespecs.
79  NOTE: `timercmp' does not work for >= or <=. */
80 
81 #ifndef timespecisset
82 # define timespecisset(tvp) ((tvp)->tv_sec || (tvp)->tv_nsec)
83 #endif
84 
85 #ifndef timespecclear
86 # define timespecclear(tvp) ((tvp)->tv_sec = (tvp)->tv_nsec = 0)
87 #endif
88 
89 #ifndef timespeccmp
90 # define timespeccmp(a, b, CMP) \
91  (((a)->tv_sec == (b)->tv_sec) ? \
92  ((a)->tv_nsec CMP (b)->tv_nsec) : \
93  ((a)->tv_sec CMP (b)->tv_sec))
94 #endif
95 
96 #ifndef timespecadd
97 # define timespecadd(a, b, result) \
98  do { \
99  (result)->tv_sec = (a)->tv_sec + (b)->tv_sec; \
100  (result)->tv_nsec = (a)->tv_nsec + (b)->tv_nsec; \
101  if ((result)->tv_nsec >= 1000000000) \
102  { \
103  ++(result)->tv_sec; \
104  (result)->tv_nsec -= 1000000000; \
105  } \
106  } while (0)
107 #endif
108 
109 #ifndef timespecsub
110 # define timespecsub(a, b, result) \
111  do { \
112  (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \
113  (result)->tv_nsec = (a)->tv_nsec - (b)->tv_nsec; \
114  if ((result)->tv_nsec < 0) { \
115  --(result)->tv_sec; \
116  (result)->tv_nsec += 1000000000; \
117  } \
118  } while (0)
119 #endif
120 
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