tests/hello.cxx/hello.cpp

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