hello/hello.c

   1 #include <stdio.h>
   2 #include <unistd.h>
   3 #include <sys/mman.h>
   4 #include <stdarg.h>
   5 #include <sys/types.h>
   6 #include <sys/stat.h>
   7 #include <fcntl.h>
   8
   9 #include "../libmarkers/marker.h"
  10 #include "usterr.h"
  11 #include "tracer.h"
  12 #include "marker-control.h"
  13 #include "relay.h"
  14
  15
  16
  17 void probe(const struct marker *mdata,
  18                 void *probe_private, void *call_private,
  19                 const char *fmt, va_list *args)
  20 {
  21         printf("In probe\n");
  22 }
  23
  24 void inthandler(int sig)
  25 {
  26         printf("in handler\n");
  27         exit(0);
  28 }
  29
  30 int init_int_handler(void)
  31 {
  32         int result;
  33         struct sigaction act;
  34
  35         result = sigemptyset(&act.sa_mask);
  36         if(result == -1) {
  37                 PERROR("sigemptyset");
  38                 return -1;
  39         }
  40
  41         act.sa_handler = inthandler;
  42         act.sa_flags = SA_RESTART;
  43
  44         /* Only defer ourselves. Also, try to restart interrupted
  45          * syscalls to disturb the traced program as little as possible.
  46          */
  47         result = sigaction(SIGINT, &act, NULL);
  48         if(result == -1) {
  49                 PERROR("sigaction");
  50                 return -1;
  51         }
  52
  53         return 0;
  54 }
  55
  56 int main()
  57 {
  58         int result;
  59         int i;
  60
  61         init_int_handler();
  62
  63         printf("Hello, World!\n");
  64
  65         sleep(1);
  66         for(i=0; i<50; i++) {
  67                 trace_mark(ust, bar, "str %s", "FOOBAZ");
  68                 trace_mark(ust, bar2, "number1 %d number2 %d", 53, 9800);
  69                 usleep(100000);
  70         }
  71
  72         scanf("%*s");
  73
  74         return 0;
  75 }
  76
  77 MARKER_LIB