-
Notifications
You must be signed in to change notification settings - Fork 1
/
util.h
69 lines (55 loc) · 2.38 KB
/
util.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
// Part of dump1090, a Mode S message decoder for RTLSDR devices.
//
// util.h: misc utilities prototypes
//
// Copyright (c) 2015 Oliver Jowett <[email protected]>
//
// This file is free software: you may copy, redistribute and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation, either version 2 of the License, or (at your
// option) any later version.
//
// This file is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
#ifndef DUMP1090_UTIL_H
#define DUMP1090_UTIL_H
#include <stdint.h>
#include <pthread.h>
/* Returns system time in milliseconds */
uint64_t mstime(void);
/* Returns the time for the current message we're dealing with */
extern uint64_t _messageNow;
static inline uint64_t messageNow() {
return _messageNow;
}
/* Returns the time elapsed, in nanoseconds, from t1 to t2,
* where t1 and t2 are 12MHz counters.
*/
int64_t receiveclock_ns_elapsed(uint64_t t1, uint64_t t2);
/* Same, in milliseconds */
int64_t receiveclock_ms_elapsed(uint64_t t1, uint64_t t2);
/* Normalize the value in ts so that ts->nsec lies in
* [0,999999999]
*/
struct timespec;
void normalize_timespec(struct timespec *ts);
/* Find the absolute system time that is `timeout_ms` milliseconds in the future, and store that in *ts */
void get_deadline(uint32_t timeout_ms, struct timespec *ts);
/* record current CPU time in start_time */
void start_cpu_timing(struct timespec *start_time);
/* add difference between start_time and the current CPU time to add_to */
void end_cpu_timing(const struct timespec *start_time, struct timespec *add_to);
/* like end_cpu_timing followed by start_cpu_timing, but without a gap */
void update_cpu_timing(struct timespec *start_time, struct timespec *add_to);
/* set current thread name, if supported */
void set_thread_name(const char *name);
/* wait for the given thread to terminate, like pthread_join. If supported,
* if the thread has not terminated within `timeout_ms` milliseconds, return ETIMEDOUT.
*/
int join_thread(pthread_t thread, void **retval, uint32_t timeout_ms);
#endif