tests/utils/testapp/gen-ust-events/gen-ust-events.c

   1 /*
   2  * Copyright (C) - 2012 David Goulet <dgoulet@efficios.com>
   3  *
   4  * This library is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU Lesser General Public License as published by the
   6  * Free Software Foundation; version 2.1 of the License.
   7  *
   8  * This library is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
  11  * for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public License
  14  * along with this library; if not, write to the Free Software Foundation,
  15  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  16  */
  17
  18 #include <assert.h>
  19 #include <arpa/inet.h>
  20 #include <fcntl.h>
  21 #include <stdarg.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <sys/mman.h>
  26 #include <sys/stat.h>
  27 #include <sys/types.h>
  28 #include <unistd.h>
  29
  30 #define TRACEPOINT_DEFINE
  31 #include "tp.h"
  32
  33 void create_file(const char *path)
  34 {
  35         int ret;
  36
  37         assert(path);
  38
  39         ret = creat(path, S_IRWXU);
  40         if (ret < 0) {
  41                 fprintf(stderr, "Failed to create file %s\n", path);
  42                 return;
  43         }
  44
  45         (void) close(ret);
  46 }
  47
  48 int main(int argc, char **argv)
  49 {
  50         int i, netint;
  51         long values[] = { 1, 2, 3 };
  52         char text[10] = "test";
  53         double dbl = 2.0;
  54         float flt = 2222.0;
  55         unsigned int nr_iter = 100;
  56         useconds_t nr_usec = 0;
  57         char *tmp_file_path = NULL;
  58
  59         if (argc >= 2) {
  60                 nr_iter = atoi(argv[1]);
  61         }
  62
  63         if (argc >= 3) {
  64                 /* By default, don't wait unless user specifies. */
  65                 nr_usec = atoi(argv[2]);
  66         }
  67
  68         if (argc >= 4) {
  69                 tmp_file_path = argv[3];
  70         }
  71
  72         for (i = 0; i < nr_iter; i++) {
  73                 netint = htonl(i);
  74                 tracepoint(tp, tptest, i, netint, values, text, strlen(text), dbl,
  75                                 flt);
  76
  77                 /*
  78                  * First loop we create the file if asked to indicate that at least one
  79                  * tracepoint has been hit.
  80                  */
  81                 if (i == 0 && tmp_file_path) {
  82                         create_file(tmp_file_path);
  83                 }
  84                 usleep(nr_usec);
  85         }
  86
  87         return 0;
  88 }