doc/examples/demo-tracef/demo-vtracef.c

   1 /*
   2  * SPDX-License-Identifier: LGPL-2.1-only
   3  *
   4  * Copyright (C) 2020 Maxime Roussin-Belanger <maxime.roussinbelanger@gmail.com>
   5  */
   6
   7 #include <stdarg.h>
   8 #include <stdlib.h>
   9 #include <stdio.h>
  10 #include <unistd.h>
  11
  12 #include <lttng/tracef.h>
  13
  14 void print_debug(const char* msg, ...)
  15 {
  16         va_list ap;
  17
  18         va_start(ap, msg);
  19         vtracef(msg, ap);
  20         va_end(ap);
  21 }
  22
  23 int main(int argc, char **argv)
  24 {
  25         int i;
  26         int delay = 0;
  27         const char *str = "mystring test";
  28         long l = 0x42;
  29
  30         if (argc > 2)
  31                 delay = atoi(argv[1]);
  32
  33         fprintf(stderr, "Demo program starting.\n");
  34
  35         sleep(delay);
  36
  37         fprintf(stderr, "Tracing... ");
  38
  39         for (i = 0; i < 5; i++) {
  40                 print_debug("This is a \"%s\" formatted %d event %lx", str, i, l);
  41         }
  42
  43         fprintf(stderr, " done.\n");
  44         return 0;
  45 }