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

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