examples/linux-fs-simple/linux-fs-simple.c

   1 /*
   2  * The MIT License (MIT)
   3  *
   4  * Copyright (c) 2016-2020 Philippe Proulx <pproulx@efficios.com>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include <stdio.h>
  26 #include <stdint.h>
  27 #include <stdlib.h>
  28 #include <time.h>
  29
  30 #include "barectf-platform-linux-fs.h"
  31 #include "barectf.h"
  32
  33 enum state_t {
  34         NEW,
  35         TERMINATED,
  36         READY,
  37         RUNNING,
  38         WAITING,
  39 };
  40
  41 static void trace_stuff(struct barectf_default_ctx * const ctx, const int argc,
  42         const char * const argv[])
  43 {
  44         int i;
  45         const char *str;
  46
  47         /* Record 40,000 events */
  48         for (i = 0; i < 5000; ++i) {
  49                 barectf_trace_simple_uint32(ctx, i * 1500);
  50                 barectf_trace_simple_int16(ctx, -i * 2);
  51                 barectf_trace_simple_float(ctx, (float) i / 1.23);
  52
  53                 if (argc > 0) {
  54                         str = argv[i % argc];
  55                 } else {
  56                         str = "hello there!";
  57                 }
  58
  59                 barectf_trace_simple_string(ctx, str);
  60                 barectf_trace_context_no_payload(ctx, i, "ctx");
  61                 barectf_trace_simple_enum(ctx, RUNNING);
  62                 barectf_trace_a_few_fields(ctx, -1, 301, -3.14159, str, NEW);
  63                 barectf_trace_bit_packed_integers(ctx, 1, -1, 3, -2, 2, 7, 23,
  64                         -55, 232);
  65                 barectf_trace_no_context_no_payload(ctx);
  66                 barectf_trace_simple_enum(ctx, TERMINATED);
  67         }
  68 }
  69
  70 int main(const int argc, const char * const argv[])
  71 {
  72         struct barectf_platform_linux_fs_ctx *platform_ctx;
  73         int exit_status = 0;
  74
  75         /* Initialize platform */
  76         platform_ctx = barectf_platform_linux_fs_init(512, "trace", 1, 2, 7);
  77
  78         if (!platform_ctx) {
  79                 fprintf(stderr,
  80                         "Error: failed to initialize Linux FS platform.\n");
  81                 exit_status = 1;
  82                 goto end;
  83         }
  84
  85         /* Trace stuff (will create/write packets as it executes) */
  86         trace_stuff(barectf_platform_linux_fs_get_barectf_ctx(platform_ctx),
  87                 argc, argv);
  88
  89         /* Finalize platform */
  90         barectf_platform_linux_fs_fini(platform_ctx);
  91
  92 end:
  93         return exit_status;
  94 }