src/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 <babeltrace2/babeltrace.h>
  24 #include "common/macros.h"
  25 #include "common/assert.h"
  26 #include "dummy.h"
  27
  28 static
  29 const char * const in_port_name = "in";
  30
  31 void destroy_private_dummy_data(struct dummy *dummy)
  32 {
  33         bt_self_component_port_input_message_iterator_put_ref(dummy->msg_iter);
  34         g_free(dummy);
  35
  36 }
  37
  38 BT_HIDDEN
  39 void dummy_finalize(bt_self_component_sink *comp)
  40 {
  41         struct dummy *dummy;
  42
  43         BT_ASSERT(comp);
  44         dummy = bt_self_component_get_data(
  45                         bt_self_component_sink_as_self_component(comp));
  46         BT_ASSERT(dummy);
  47         destroy_private_dummy_data(dummy);
  48 }
  49
  50 BT_HIDDEN
  51 bt_component_class_init_method_status dummy_init(
  52                 bt_self_component_sink *component,
  53                 const bt_value *params,
  54                 __attribute__((unused)) void *init_method_data)
  55 {
  56         bt_component_class_init_method_status status =
  57                 BT_COMPONENT_CLASS_INIT_METHOD_STATUS_OK;
  58         bt_self_component_add_port_status add_port_status;
  59         struct dummy *dummy = g_new0(struct dummy, 1);
  60
  61         if (!dummy) {
  62                 status = BT_COMPONENT_CLASS_INIT_METHOD_STATUS_MEMORY_ERROR;
  63                 goto end;
  64         }
  65
  66         add_port_status = bt_self_component_sink_add_input_port(component,
  67                 "in", NULL, NULL);
  68         switch (add_port_status) {
  69         case BT_SELF_COMPONENT_ADD_PORT_STATUS_ERROR:
  70                 status = BT_COMPONENT_CLASS_INIT_METHOD_STATUS_ERROR;
  71                 goto error;
  72         case BT_SELF_COMPONENT_ADD_PORT_STATUS_MEMORY_ERROR:
  73                 status = BT_COMPONENT_CLASS_INIT_METHOD_STATUS_MEMORY_ERROR;
  74                 goto error;
  75         default:
  76                 break;
  77         }
  78
  79         bt_self_component_set_data(
  80                 bt_self_component_sink_as_self_component(component), dummy);
  81         goto end;
  82
  83 error:
  84         destroy_private_dummy_data(dummy);
  85
  86 end:
  87         return status;
  88 }
  89
  90 BT_HIDDEN
  91 bt_component_class_sink_graph_is_configured_method_status dummy_graph_is_configured(
  92                 bt_self_component_sink *comp)
  93 {
  94         bt_component_class_sink_graph_is_configured_method_status status =
  95                 BT_COMPONENT_CLASS_SINK_GRAPH_IS_CONFIGURED_METHOD_STATUS_OK;
  96         struct dummy *dummy;
  97         bt_self_component_port_input_message_iterator *iterator;
  98
  99         dummy = bt_self_component_get_data(
 100                 bt_self_component_sink_as_self_component(comp));
 101         BT_ASSERT(dummy);
 102         iterator = bt_self_component_port_input_message_iterator_create_from_sink_component(
 103                 comp, bt_self_component_sink_borrow_input_port_by_name(comp,
 104                         in_port_name));
 105         if (!iterator) {
 106                 status = BT_COMPONENT_CLASS_SINK_GRAPH_IS_CONFIGURED_METHOD_STATUS_MEMORY_ERROR;
 107                 goto end;
 108         }
 109
 110         BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_MOVE_REF(
 111                 dummy->msg_iter, iterator);
 112
 113 end:
 114         return status;
 115 }
 116
 117 BT_HIDDEN
 118 bt_component_class_sink_consume_method_status dummy_consume(
 119                 bt_self_component_sink *component)
 120 {
 121         bt_component_class_sink_consume_method_status status =
 122                 BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_OK;
 123         bt_message_array_const msgs;
 124         uint64_t count;
 125         struct dummy *dummy;
 126         bt_message_iterator_next_status next_status;
 127         uint64_t i;
 128
 129         dummy = bt_self_component_get_data(
 130                 bt_self_component_sink_as_self_component(component));
 131         BT_ASSERT(dummy);
 132
 133         if (G_UNLIKELY(!dummy->msg_iter)) {
 134                 status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_END;
 135                 goto end;
 136         }
 137
 138         /* Consume one message  */
 139         next_status = bt_self_component_port_input_message_iterator_next(
 140                 dummy->msg_iter, &msgs, &count);
 141         switch (next_status) {
 142         case BT_MESSAGE_ITERATOR_NEXT_STATUS_OK:
 143                 status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_OK;
 144
 145                 for (i = 0; i < count; i++) {
 146                         bt_message_put_ref(msgs[i]);
 147                 }
 148
 149                 break;
 150         case BT_MESSAGE_ITERATOR_NEXT_STATUS_AGAIN:
 151                 status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_AGAIN;
 152                 goto end;
 153         case BT_MESSAGE_ITERATOR_NEXT_STATUS_END:
 154                 status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_END;
 155                 goto end;
 156         case BT_MESSAGE_ITERATOR_NEXT_STATUS_ERROR:
 157                 status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
 158                 goto end;
 159         case BT_MESSAGE_ITERATOR_NEXT_STATUS_MEMORY_ERROR:
 160                 status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_MEMORY_ERROR;
 161                 goto end;
 162         default:
 163                 break;
 164         }
 165
 166 end:
 167         return status;
 168 }