tests/hello/hello.c

   1 /*
   2  * Copyright (C) 2009  Pierre-Marc Fournier
   3  * Copyright (C) 2011  Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  18  */
  19
  20 #include <stdio.h>
  21 #include <unistd.h>
  22 #include <sys/mman.h>
  23 #include <stdarg.h>
  24 #include <sys/types.h>
  25 #include <sys/stat.h>
  26 #include <fcntl.h>
  27 #include <signal.h>
  28
  29 #include <ust/marker.h>
  30 #include <ust/ustctl.h>
  31 #include "usterr.h"
  32 #include "tp.h"
  33
  34 void inthandler(int sig)
  35 {
  36         printf("in handler\n");
  37         exit(0);
  38 }
  39
  40 int init_int_handler(void)
  41 {
  42         int result;
  43         struct sigaction act;
  44
  45         result = sigemptyset(&act.sa_mask);
  46         if (result == -1) {
  47                 PERROR("sigemptyset");
  48                 return -1;
  49         }
  50
  51         act.sa_handler = inthandler;
  52         act.sa_flags = SA_RESTART;
  53
  54         /* Only defer ourselves. Also, try to restart interrupted
  55          * syscalls to disturb the traced program as little as possible.
  56          */
  57         result = sigaction(SIGINT, &act, NULL);
  58         if (result == -1) {
  59                 PERROR("sigaction");
  60                 return -1;
  61         }
  62
  63         return 0;
  64 }
  65
  66 int main()
  67 {
  68         int i;
  69
  70         init_int_handler();
  71
  72         printf("Hello, World!\n");
  73
  74         sleep(1);
  75         for (i = 0; i < 50; i++) {
  76                 ust_marker(bar, "str %s", "FOOBAZ");
  77                 ust_marker(bar2, "number1 %d number2 %d", 53, 9800);
  78                 tracepoint(hello_tptest, i);
  79                 usleep(100000);
  80         }
  81
  82         if (scanf("%*s") == EOF)
  83                 PERROR("scanf failed");
  84
  85         ustctl_stop_trace(getpid(), "auto");
  86         ustctl_destroy_trace(getpid(), "auto");
  87
  88         DBG("TRACE STOPPED");
  89         if (scanf("%*s") == EOF)
  90                 PERROR("scanf failed");
  91
  92         return 0;
  93 }