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

   1 /*
   2  * Copyright (C) 2012 David Goulet <dgoulet@efficios.com>
   3  *
   4  * SPDX-License-Identifier: LGPL-2.1-only
   5  *
   6  */
   7
   8 #define _LGPL_SOURCE
   9 #include <arpa/inet.h>
  10 #include <getopt.h>
  11 #include <stdarg.h>
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14 #include <string.h>
  15 #include <sys/mman.h>
  16 #include <sys/stat.h>
  17 #include <sys/types.h>
  18 #include <unistd.h>
  19 #include "utils.h"
  20 #include "signal-helper.h"
  21
  22 #define TRACEPOINT_DEFINE
  23 #include "tp.h"
  24
  25 static struct option long_options[] =
  26 {
  27         /* These options set a flag. */
  28         {"iter", required_argument, 0, 'i'},
  29         {"wait", required_argument, 0, 'w'},
  30         {"create-in-main", required_argument, 0, 'm'},
  31         {"wait-before-first-event", required_argument, 0, 'b'},
  32         {0, 0, 0, 0}
  33 };
  34
  35 int main(int argc, char **argv)
  36 {
  37         int i, netint, ret = 0, option_index, option;
  38         long values[] = { 1, 2, 3 };
  39         char text[10] = "test";
  40         double dbl = 2.0;
  41         float flt = 2222.0;
  42         unsigned int nr_iter = 100;
  43         useconds_t nr_usec = 0;
  44         char *wait_before_first_event_file_path = NULL;
  45         char *create_in_main_file_path = NULL;
  46
  47         while ((option = getopt_long(argc, argv, "i:w:b:m:",
  48                         long_options, &option_index)) != -1) {
  49                 switch (option) {
  50                 case 'b':
  51                         wait_before_first_event_file_path = strdup(optarg);
  52                         break;
  53                 case 'm':
  54                         create_in_main_file_path = strdup(optarg);
  55                         break;
  56                 case 'i':
  57                         nr_iter = atoi(optarg);
  58                         break;
  59                 case 'w':
  60                         nr_usec = atoi(optarg);
  61                         break;
  62                 case '?':
  63                         /* getopt_long already printed an error message. */
  64                 default:
  65                         ret = -1;
  66                         goto end;
  67                 }
  68         }
  69
  70         if (set_signal_handler()) {
  71                 ret = -1;
  72                 goto end;
  73         }
  74
  75         /*
  76          * The two following sync points allow for tests to do work after the
  77          * app has started BUT before it generates any events.
  78          */
  79         if (create_in_main_file_path) {
  80                 ret = create_file(create_in_main_file_path);
  81                 if (ret != 0) {
  82                         goto end;
  83                 }
  84         }
  85
  86         if (wait_before_first_event_file_path) {
  87                 ret = wait_on_file(wait_before_first_event_file_path);
  88                 if (ret != 0) {
  89                         goto end;
  90                 }
  91         }
  92
  93         for (i = 0; i < nr_iter; i++) {
  94                 netint = htonl(i);
  95                 tracepoint(tp, tptest1, i, netint, values, text, strlen(text),
  96                            dbl, flt);
  97                 tracepoint(tp, tptest2, i, netint, values, text, strlen(text),
  98                                 dbl, flt);
  99                 tracepoint(tp, tptest3, i, netint, values, text, strlen(text),
 100                                 dbl, flt);
 101                 tracepoint(tp, tptest4, i, netint, values, text, strlen(text),
 102                                 dbl, flt);
 103                 tracepoint(tp, tptest5, i, netint, values, text, strlen(text),
 104                                 dbl, flt);
 105                 if (nr_usec) {
 106                         if (usleep_safe(nr_usec)) {
 107                                 ret = -1;
 108                                 goto end;
 109                         }
 110                 }
 111                 if (should_quit) {
 112                         break;
 113                 }
 114         }
 115
 116 end:
 117         free(create_in_main_file_path);
 118         free(wait_before_first_event_file_path);
 119         exit(!ret ? EXIT_SUCCESS : EXIT_FAILURE);
 120 }