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 #include <stdlib.h>
  31 #include <stdbool.h>
  32
  33 #define TRACEPOINT_DEFINE
  34 #include "ust_tests_hello.h"
  35
  36 void inthandler(int sig)
  37 {
  38         printf("in SIGUSR1 handler\n");
  39         tracepoint(ust_tests_hello, tptest_sighandler);
  40 }
  41
  42 int init_int_handler(void)
  43 {
  44         int result;
  45         struct sigaction act;
  46
  47         memset(&act, 0, sizeof(act));
  48         result = sigemptyset(&act.sa_mask);
  49         if (result == -1) {
  50                 perror("sigemptyset");
  51                 return -1;
  52         }
  53
  54         act.sa_handler = inthandler;
  55         act.sa_flags = SA_RESTART;
  56
  57         /* Only defer ourselves. Also, try to restart interrupted
  58          * syscalls to disturb the traced program as little as possible.
  59          */
  60         result = sigaction(SIGUSR1, &act, NULL);
  61         if (result == -1) {
  62                 perror("sigaction");
  63                 return -1;
  64         }
  65
  66         return 0;
  67 }
  68
  69 int main(int argc, char **argv)
  70 {
  71         int i, netint;
  72         long values[] = { 1, 2, 3 };
  73         char text[10] = "test";
  74         double dbl = 2.0;
  75         float flt = 2222.0;
  76         int delay = 0;
  77         bool mybool = 123;      /* should print "1" */
  78
  79         init_int_handler();
  80
  81         if (argc == 2)
  82                 delay = atoi(argv[1]);
  83
  84         fprintf(stderr, "Hello, World!\n");
  85
  86         sleep(delay);
  87
  88         fprintf(stderr, "Tracing... ");
  89         for (i = 0; i < 1000000; i++) {
  90                 netint = htonl(i);
  91                 tracepoint(ust_tests_hello, tptest, i, netint, values,
  92                            text, strlen(text), dbl, flt, mybool);
  93                 //usleep(100000);
  94         }
  95         fprintf(stderr, " done.\n");
  96         return 0;
  97 }