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; version 2.1 of
   8  * the License.
   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 #include <string.h>
  29 #include <arpa/inet.h>
  30
  31 #include "ust_tests_hello.h"
  32
  33 void inthandler(int sig)
  34 {
  35         printf("in SIGUSR1 handler\n");
  36         tracepoint(ust_tests_hello, tptest_sighandler);
  37 }
  38
  39 int init_int_handler(void)
  40 {
  41         int result;
  42         struct sigaction act;
  43
  44         memset(&act, 0, sizeof(act));
  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(SIGUSR1, &act, NULL);
  58         if (result == -1) {
  59                 perror("sigaction");
  60                 return -1;
  61         }
  62
  63         return 0;
  64 }
  65
  66 int main(int argc, char **argv)
  67 {
  68         int i, netint;
  69         long values[] = { 1, 2, 3 };
  70         char text[10] = "test";
  71         double dbl = 2.0;
  72         float flt = 2222.0;
  73         int delay = 0;
  74
  75         init_int_handler();
  76
  77         if (argc == 2)
  78                 delay = atoi(argv[1]);
  79
  80         fprintf(stderr, "Hello, World!\n");
  81
  82         sleep(delay);
  83
  84         fprintf(stderr, "Tracing... ");
  85         for (i = 0; i < 1000000; i++) {
  86                 netint = htonl(i);
  87                 tracepoint(ust_tests_hello, tptest, i, netint, values,
  88                            text, strlen(text), dbl, flt);
  89                 //usleep(100000);
  90         }
  91         fprintf(stderr, " done.\n");
  92         return 0;
  93 }