doc/examples/barectf-tracepoint/barectf-tracepoint.c

   1 #include <stdio.h>
   2 #include <stdint.h>
   3 #include <stdlib.h>
   4 #include <time.h>
   5
   6 #if defined(WITH_LTTNG_UST)
   7 #include "barectf-tracepoint-lttng-ust.h"
   8 #else
   9 #include "barectf-tracepoint-linux-fs.h"
  10 #endif
  11
  12 enum state_t {
  13         NEW,
  14         TERMINATED,
  15         READY,
  16         RUNNING,
  17         WAITING,
  18 };
  19
  20 static void trace_stuff(int argc, char *argv[])
  21 {
  22         int i;
  23         const char *str;
  24
  25         /* record 40000 events */
  26         for (i = 0; i < 5000; ++i) {
  27                 tracepoint(barectf_tp, simple_uint32, i * 1500);
  28                 tracepoint(barectf_tp, simple_int16, -i * 2);
  29                 tracepoint(barectf_tp, simple_float, (float) i / 1.23);
  30
  31                 if (argc > 0) {
  32                         str = argv[i % argc];
  33                 } else {
  34                         str = "hello there!";
  35                 }
  36
  37                 tracepoint(barectf_tp, simple_string, str);
  38                 tracepoint(barectf_tp, simple_enum, RUNNING);
  39                 tracepoint(barectf_tp, a_few_fields, -1, 301, -3.14159,
  40                            str, NEW);
  41                 tracepoint(barectf_tp, bit_packed_integers, 1, -1, 3,
  42                            -2, 2, 7, 23, -55, 232);
  43                 tracepoint(barectf_tp, simple_enum, TERMINATED);
  44         }
  45 }
  46
  47 int main(int argc, char *argv[])
  48 {
  49         init_tracing();
  50         trace_stuff(argc, argv);
  51         fini_tracing();
  52
  53         return 0;
  54 }