File: clockslave.c

package info (click to toggle)
o2 1.0~repack-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster, sid
  • size: 1,156 kB
  • sloc: ansic: 9,132; python: 137; sh: 111; makefile: 10
file content (72 lines) | stat: -rw-r--r-- 2,185 bytes parent folder | download
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
70
71
72
//  clockslave.c - clock synchronization test/demo
////
//  see clockmaster.c for details


#include "o2.h"
#include "stdio.h"
#include "string.h"

#ifdef WIN32
#include "usleep.h" // special windows implementation of sleep/usleep
#else
#include <unistd.h>
#endif

o2_time cs_time = 1000000.0;

void clockslave(o2_msg_data_ptr msg, const char *types,
                o2_arg ** argv, int argc, void *user_data)
{
    int ss = o2_status("server");
    int cs = o2_status("client");
    double mean_rtt, min_rtt;
    o2_roundtrip(&mean_rtt, &min_rtt);
    printf("clockslave: local time %g global time %g "
           "ss %d cs %d mean %g min %g\n",
           o2_local_time(), o2_time_get(), ss, cs, mean_rtt, min_rtt);
    if (ss == O2_REMOTE) {
        if (o2_time_get() < cs_time) {
            cs_time = o2_time_get();
            printf("clockslave sync time %g\n", cs_time);
        }
    }
    // stop 10s later
    if (o2_time_get() > cs_time + 10) {
        o2_stop_flag = TRUE;
        printf("clockslave set stop flag TRUE at %g\n", o2_time_get());
    }
    // Since the clock slave cannot immediately send scheduled messages
    // due to there being no global time reference, we will schedule
    // messages directly on the local scheduler
    o2_send_start();
    o2_message_ptr m = o2_message_finish(o2_local_time() + 1,
                                         "!client/clockslave", TRUE);
    o2_schedule(&o2_ltsched, m);
}


int main(int argc, const char * argv[])
{
    printf("Usage: clockslave [debugflags] "
           "(see o2.h for flags, use a for all)\n");
    if (argc == 2) {
        o2_debug_flags(argv[1]);
        printf("debug flags are: %s\n", argv[1]);
    }
    if (argc > 2) {
        printf("WARNING: clockslave ignoring extra command line argments\n");
    }

    o2_initialize("test");
    o2_service_new("client");
    o2_method_new("/client/clockslave", "", &clockslave, NULL, FALSE, FALSE);
    // this particular handler ignores all parameters, so this is OK:
    // start polling and reporting status
    clockslave(NULL, NULL, NULL, 0, NULL);
    o2_run(100);
    o2_finish();
    sleep(1);
    printf("CLOCKSLAVE DONE\n");
    return 0;
}