tests/plugins/sink.ctf.fs/succeed/gen-trace-float.c

   1 /*
   2  * Copyright 2019 Philippe Proulx <pproulx@efficios.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a copy
   5  * of this software and associated documentation files (the "Software"), to deal
   6  * in the Software without restriction, including without limitation the rights
   7  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   8  * copies of the Software, and to permit persons to whom the Software is
   9  * furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  17  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  19  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #include <stdint.h>
  24 #include <babeltrace2-ctf-writer/writer.h>
  25 #include <babeltrace2-ctf-writer/clock.h>
  26 #include <babeltrace2-ctf-writer/clock-class.h>
  27 #include <babeltrace2-ctf-writer/stream.h>
  28 #include <babeltrace2-ctf-writer/event.h>
  29 #include <babeltrace2-ctf-writer/event-types.h>
  30 #include <babeltrace2-ctf-writer/event-fields.h>
  31 #include <babeltrace2-ctf-writer/stream-class.h>
  32 #include <babeltrace2-ctf-writer/trace.h>
  33
  34 #include "common/assert.h"
  35
  36 struct config {
  37         struct bt_ctf_writer *writer;
  38         struct bt_ctf_trace *trace;
  39         struct bt_ctf_clock *clock;
  40         struct bt_ctf_stream_class *sc;
  41         struct bt_ctf_stream *stream;
  42         struct bt_ctf_event_class *ec;
  43 };
  44
  45 static
  46 void fini_config(struct config *cfg)
  47 {
  48         bt_ctf_object_put_ref(cfg->stream);
  49         bt_ctf_object_put_ref(cfg->sc);
  50         bt_ctf_object_put_ref(cfg->ec);
  51         bt_ctf_object_put_ref(cfg->clock);
  52         bt_ctf_object_put_ref(cfg->trace);
  53         bt_ctf_object_put_ref(cfg->writer);
  54 }
  55
  56 static
  57 void configure_writer(struct config *cfg, const char *path)
  58 {
  59         struct bt_ctf_field_type *ft;
  60         int ret;
  61
  62         cfg->writer = bt_ctf_writer_create(path);
  63         BT_ASSERT(cfg->writer);
  64         cfg->trace = bt_ctf_writer_get_trace(cfg->writer);
  65         BT_ASSERT(cfg->trace);
  66         cfg->clock = bt_ctf_clock_create("default");
  67         BT_ASSERT(cfg->clock);
  68         ret = bt_ctf_writer_add_clock(cfg->writer, cfg->clock);
  69         BT_ASSERT(ret == 0);
  70         ret = bt_ctf_writer_set_byte_order(cfg->writer,
  71                 BT_CTF_BYTE_ORDER_BIG_ENDIAN);
  72         BT_ASSERT(ret == 0);
  73         cfg->sc = bt_ctf_stream_class_create("hello");
  74         BT_ASSERT(cfg->sc);
  75         ret = bt_ctf_stream_class_set_clock(cfg->sc, cfg->clock);
  76         BT_ASSERT(ret == 0);
  77         cfg->ec = bt_ctf_event_class_create("ev");
  78         BT_ASSERT(cfg->ec);
  79         ft = bt_ctf_field_type_floating_point_create();
  80         BT_ASSERT(ft);
  81         ret = bt_ctf_field_type_floating_point_set_exponent_digits(ft, 8);
  82         BT_ASSERT(ret == 0);
  83         ret = bt_ctf_field_type_floating_point_set_mantissa_digits(ft, 24);
  84         BT_ASSERT(ret == 0);
  85         ret = bt_ctf_event_class_add_field(cfg->ec, ft, "flt");
  86         BT_ASSERT(ret == 0);
  87         bt_ctf_object_put_ref(ft);
  88         ret = bt_ctf_stream_class_add_event_class(cfg->sc, cfg->ec);
  89         BT_ASSERT(ret == 0);
  90         cfg->stream = bt_ctf_writer_create_stream(cfg->writer, cfg->sc);
  91         BT_ASSERT(cfg->stream);
  92 }
  93
  94 static
  95 void write_stream(struct config *cfg)
  96 {
  97         struct bt_ctf_event *ev;
  98         struct bt_ctf_field *field;
  99         int ret;
 100
 101         /* Create event and fill fields */
 102         ev = bt_ctf_event_create(cfg->ec);
 103         BT_ASSERT(ev);
 104         field = bt_ctf_event_get_payload(ev, "flt");
 105         BT_ASSERT(field);
 106         ret = bt_ctf_field_floating_point_set_value(field, -28.4751);
 107         BT_ASSERT(ret == 0);
 108         bt_ctf_object_put_ref(field);
 109         ret = bt_ctf_clock_set_time(cfg->clock, 0);
 110         BT_ASSERT(ret == 0);
 111
 112         /* Append event */
 113         ret = bt_ctf_stream_append_event(cfg->stream, ev);
 114         BT_ASSERT(ret == 0);
 115         bt_ctf_object_put_ref(ev);
 116
 117         /* Create packet */
 118         ret = bt_ctf_stream_flush(cfg->stream);
 119         BT_ASSERT(ret == 0);
 120 }
 121
 122 int main(int argc, char **argv)
 123 {
 124         struct config cfg = {0};
 125
 126         BT_ASSERT(argc >= 2);
 127         configure_writer(&cfg, argv[1]);
 128         write_stream(&cfg);
 129         fini_config(&cfg);
 130         return 0;
 131 }