plugins/ctf/ctf-reader/reader.c

   1 /*
   2  * reader.c
   3  *
   4  * Babeltrace CTF Reader Plugin
   5  *
   6  * Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   7  *
   8  * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
   9  *
  10  * Permission is hereby granted, free of charge, to any person obtaining a copy
  11  * of this software and associated documentation files (the "Software"), to deal
  12  * in the Software without restriction, including without limitation the rights
  13  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  14  * copies of the Software, and to permit persons to whom the Software is
  15  * furnished to do so, subject to the following conditions:
  16  *
  17  * The above copyright notice and this permission notice shall be included in
  18  * all copies or substantial portions of the Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  23  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  24  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  25  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  26  * SOFTWARE.
  27  */
  28
  29 #include <babeltrace/plugin/plugin-lib.h>
  30 #include <babeltrace/plugin/plugin-system.h>
  31 #include <glib.h>
  32 #include <stdio.h>
  33
  34 const char *plugin_name = "ctf";
  35
  36 struct ctf_reader {
  37         int a;
  38 };
  39
  40 enum bt_plugin_type bt_plugin_lib_get_type(void)
  41 {
  42         return BT_PLUGIN_TYPE_SOURCE;
  43 }
  44
  45 const char *bt_plugin_lib_get_format_name(void)
  46 {
  47         return plugin_name;
  48 }
  49
  50 static
  51 void ctf_reader_destroy(struct bt_plugin *plugin)
  52 {
  53         struct ctf_reader *reader;
  54
  55         if (!plugin) {
  56                 return;
  57         }
  58
  59         reader = bt_plugin_get_private_data(plugin);
  60         if (!reader) {
  61                 return;
  62         }
  63
  64         g_free(reader);
  65 }
  66
  67 static
  68 struct bt_notification_iterator *ctf_reader_iterator_create(
  69                 struct bt_plugin *plugin)
  70 {
  71         return NULL;
  72 }
  73
  74 struct bt_plugin *bt_plugin_lib_create(struct bt_object *params)
  75 {
  76         enum bt_plugin_status ret;
  77         struct bt_plugin *plugin = NULL;
  78         struct ctf_reader *reader = g_new0(struct ctf_reader, 1);
  79
  80         if (!reader) {
  81                 goto error;
  82         }
  83
  84         plugin = bt_plugin_source_create(plugin_name, reader,
  85                 ctf_reader_destroy, ctf_reader_iterator_create);
  86         if (!plugin) {
  87                 goto error;
  88         }
  89         reader = NULL;
  90
  91         ret = bt_plugin_set_error_stream_cb(plugin,
  92                 ctf_reader_set_error_stream);
  93         if (ret != BT_PLUGIN_STATUS_OK) {
  94                 goto error;
  95         }
  96 end:
  97         return plugin;
  98 error:
  99         if (reader) {
 100                 ctf_reader_destroy(reader);
 101         }
 102         if (plugin) {
 103                 bt_plugin_put(plugin);
 104                 plugin = NULL;
 105         }
 106         goto end;
 107 }