tests/hello/hello.c

   1 /* Copyright (C) 2009  Pierre-Marc Fournier
   2  *
   3  * This library is free software; you can redistribute it and/or
   4  * modify it under the terms of the GNU Lesser General Public
   5  * License as published by the Free Software Foundation; either
   6  * version 2.1 of the License, or (at your option) any later version.
   7  *
   8  * This library is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * Lesser General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public
  14  * License along with this library; if not, write to the Free Software
  15  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  16  */
  17
  18 #include <stdio.h>
  19 #include <unistd.h>
  20 #include <sys/mman.h>
  21 #include <stdarg.h>
  22 #include <sys/types.h>
  23 #include <sys/stat.h>
  24 #include <fcntl.h>
  25 #include <signal.h>
  26
  27 #include <ust/marker.h>
  28 #include <ust/ustctl.h>
  29 #include "usterr.h"
  30 #include "tp.h"
  31
  32 void inthandler(int sig)
  33 {
  34         printf("in handler\n");
  35         exit(0);
  36 }
  37
  38 int init_int_handler(void)
  39 {
  40         int result;
  41         struct sigaction act;
  42
  43         result = sigemptyset(&act.sa_mask);
  44         if(result == -1) {
  45                 PERROR("sigemptyset");
  46                 return -1;
  47         }
  48
  49         act.sa_handler = inthandler;
  50         act.sa_flags = SA_RESTART;
  51
  52         /* Only defer ourselves. Also, try to restart interrupted
  53          * syscalls to disturb the traced program as little as possible.
  54          */
  55         result = sigaction(SIGINT, &act, NULL);
  56         if(result == -1) {
  57                 PERROR("sigaction");
  58                 return -1;
  59         }
  60
  61         return 0;
  62 }
  63
  64 int main()
  65 {
  66         int i;
  67
  68         init_int_handler();
  69
  70         printf("Hello, World!\n");
  71
  72         sleep(1);
  73         for(i=0; i<50; i++) {
  74                 trace_mark(bar, "str %s", "FOOBAZ");
  75                 trace_mark(bar2, "number1 %d number2 %d", 53, 9800);
  76                 trace_hello_tptest(i);
  77                 usleep(100000);
  78         }
  79
  80         if (scanf("%*s") == EOF)
  81                 PERROR("scanf failed");
  82
  83         ustctl_stop_trace(getpid(), "auto");
  84         ustctl_destroy_trace(getpid(), "auto");
  85
  86         DBG("TRACE STOPPED");
  87         if (scanf("%*s") == EOF)
  88                 PERROR("scanf failed");
  89
  90         return 0;
  91 }