plugins/utils/dummy/dummy.c

   1 /*
   2  * Copyright 2017 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 <babeltrace/babeltrace.h>
  24 #include <babeltrace/babeltrace-internal.h>
  25 #include <plugins-common.h>
  26 #include <babeltrace/assert-internal.h>
  27 #include "dummy.h"
  28
  29 void destroy_private_dummy_data(struct dummy *dummy)
  30 {
  31         bt_put(dummy->notif_iter);
  32         g_free(dummy);
  33 }
  34
  35 void dummy_finalize(struct bt_private_component *component)
  36 {
  37         struct dummy *dummy;
  38
  39         BT_ASSERT(component);
  40         dummy = bt_private_component_get_user_data(component);
  41         BT_ASSERT(dummy);
  42         destroy_private_dummy_data(dummy);
  43 }
  44
  45 enum bt_component_status dummy_init(struct bt_private_component *component,
  46                 struct bt_value *params, UNUSED_VAR void *init_method_data)
  47 {
  48         enum bt_component_status ret;
  49         struct dummy *dummy = g_new0(struct dummy, 1);
  50
  51         if (!dummy) {
  52                 ret = BT_COMPONENT_STATUS_NOMEM;
  53                 goto end;
  54         }
  55
  56         ret = bt_private_component_sink_add_input_private_port(component,
  57                 "in", NULL, NULL);
  58         if (ret != BT_COMPONENT_STATUS_OK) {
  59                 goto end;
  60         }
  61
  62         ret = bt_private_component_set_user_data(component, dummy);
  63         if (ret != BT_COMPONENT_STATUS_OK) {
  64                 goto error;
  65         }
  66
  67         goto end;
  68
  69 error:
  70         destroy_private_dummy_data(dummy);
  71
  72 end:
  73         return ret;
  74 }
  75
  76 void dummy_port_connected(
  77                 struct bt_private_component *component,
  78                 struct bt_private_port *self_port,
  79                 struct bt_port *other_port)
  80 {
  81         struct dummy *dummy;
  82         struct bt_notification_iterator *iterator;
  83         struct bt_private_connection *connection;
  84         enum bt_connection_status conn_status;
  85
  86         dummy = bt_private_component_get_user_data(component);
  87         BT_ASSERT(dummy);
  88         connection = bt_private_port_get_private_connection(self_port);
  89         BT_ASSERT(connection);
  90         conn_status = bt_private_connection_create_notification_iterator(
  91                 connection, &iterator);
  92         if (conn_status != BT_CONNECTION_STATUS_OK) {
  93                 dummy->error = true;
  94                 goto end;
  95         }
  96
  97         BT_MOVE(dummy->notif_iter, iterator);
  98
  99 end:
 100         bt_put(connection);
 101 }
 102
 103 enum bt_component_status dummy_consume(struct bt_private_component *component)
 104 {
 105         enum bt_component_status ret = BT_COMPONENT_STATUS_OK;
 106         struct bt_notification *notif = NULL;
 107         struct dummy *dummy;
 108         enum bt_notification_iterator_status it_ret;
 109
 110         dummy = bt_private_component_get_user_data(component);
 111         BT_ASSERT(dummy);
 112
 113         if (unlikely(dummy->error)) {
 114                 ret = BT_COMPONENT_STATUS_ERROR;
 115                 goto end;
 116         }
 117
 118         if (unlikely(!dummy->notif_iter)) {
 119                 ret = BT_COMPONENT_STATUS_END;
 120                 goto end;
 121         }
 122
 123         /* Consume one notification  */
 124         it_ret = bt_private_connection_notification_iterator_next(
 125                 dummy->notif_iter, &notif);
 126         switch (it_ret) {
 127         case BT_NOTIFICATION_ITERATOR_STATUS_ERROR:
 128                 ret = BT_COMPONENT_STATUS_ERROR;
 129                 goto end;
 130         case BT_NOTIFICATION_ITERATOR_STATUS_AGAIN:
 131                 ret = BT_COMPONENT_STATUS_AGAIN;
 132                 goto end;
 133         case BT_NOTIFICATION_ITERATOR_STATUS_END:
 134                 ret = BT_COMPONENT_STATUS_END;
 135                 goto end;
 136         default:
 137                 break;
 138         }
 139
 140 end:
 141         bt_put(notif);
 142         return ret;
 143 }