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 #include <stdbool.h>
  30
  31 #define TRACEPOINT_DEFINE
  32 #include "tp.h"
  33
  34 void create_file(const char *path)
  35 {
  36         int ret;
  37
  38         assert(path);
  39
  40         ret = creat(path, S_IRWXU);
  41         if (ret < 0) {
  42                 fprintf(stderr, "Failed to create file %s\n", path);
  43                 return;
  44         }
  45
  46         (void) close(ret);
  47 }
  48
  49 int main(int argc, char **argv)
  50 {
  51         unsigned int i, netint;
  52         long values[] = { 1, 2, 3 };
  53         char text[10] = "test";
  54         double dbl = 2.0;
  55         float flt = 2222.0;
  56         int nr_iter = 100;
  57         useconds_t nr_usec = 0;
  58         char *tmp_file_path = NULL;
  59         bool file_created = false;
  60
  61         if (argc >= 2) {
  62                 /*
  63                  * If nr_iter is negative, do an infinite tracing loop.
  64                  */
  65                 nr_iter = atoi(argv[1]);
  66         }
  67
  68         if (argc >= 3) {
  69                 /* By default, don't wait unless user specifies. */
  70                 nr_usec = atoi(argv[2]);
  71         }
  72
  73         if (argc >= 4) {
  74                 tmp_file_path = argv[3];
  75         }
  76
  77         for (i = 0; nr_iter < 0 || i < nr_iter; i++) {
  78                 netint = htonl(i);
  79                 tracepoint(tp, tptest, i, netint, values, text, strlen(text), dbl,
  80                                 flt);
  81
  82                 /*
  83                  * First loop we create the file if asked to indicate that at least one
  84                  * tracepoint has been hit.
  85                  */
  86                 if (!file_created && tmp_file_path) {
  87                         create_file(tmp_file_path);
  88                         file_created = true;
  89                 }
  90                 usleep(nr_usec);
  91         }
  92
  93         return 0;
  94 }