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Collect platform specific bits into cor_platform
jonroach 20 Oct 2025 14:36
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1#include <time.h>
2
3static inline struct timespec timespec_from_int64_ns(int64_t time_ns){
4 struct timespec r;
5 if (time_ns < 0){
6 // Round negative times towards -infinity
7 time_ns = -time_ns;
8 r.tv_nsec = 999999999 - ((time_ns-1) % 1000000000);
9 r.tv_sec = -((time_ns+999999999) / 1000000000);
10 } else {
11 r.tv_nsec = time_ns % 1000000000;
12 r.tv_sec = time_ns / 1000000000;
13 }
14 return r;
15}
16
17
18static inline int64_t int64_ns_from_timespec(struct timespec time){
19 return (int64_t)time.tv_sec * 1000000000 + time.tv_nsec;
20}
21
22
23static inline bool timespec_lt(struct timespec a, struct timespec b){
24 return a.tv_sec < b.tv_sec || (a.tv_sec == b.tv_sec && a.tv_nsec < b.tv_nsec);
25}
26
27static inline bool timespec_lte(struct timespec a, struct timespec b){
28 return a.tv_sec < b.tv_sec || (a.tv_sec == b.tv_sec && a.tv_nsec <= b.tv_nsec);
29}
30
31static inline bool timespec_eq(struct timespec a, struct timespec b){
32 return a.tv_sec == b.tv_sec && a.tv_nsec == b.tv_nsec;
33}
34
35static inline bool timespec_gt(struct timespec a, struct timespec b){
36 return timespec_lt(b, a);
37}
38
39static inline struct timespec timespec_sub(struct timespec a, struct timespec b){
40 struct timespec r;
41 if (a.tv_nsec < b.tv_nsec){
42 r.tv_nsec = 1000000000 + a.tv_nsec - b.tv_nsec;
43 r.tv_sec = a.tv_sec - b.tv_sec - 1;
44 } else {
45 r.tv_nsec = a.tv_nsec - b.tv_nsec;
46 r.tv_sec = a.tv_sec - b.tv_sec;
47 }
48 return r;
49}
50
51static inline bool timespec_gte(struct timespec a, struct timespec b){
52 return timespec_lte(b, a);
53}
54
55static inline bool timespec_ne(struct timespec a, struct timespec b){
56 return !timespec_eq(a, b);
57}
58