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_object_put_ref(dummy->notif_iter);
  32         g_free(dummy);
  33
  34 }
  35
  36 BT_HIDDEN
  37 void dummy_finalize(struct bt_self_component_sink *comp)
  38 {
  39         struct dummy *dummy;
  40
  41         BT_ASSERT(comp);
  42         dummy = bt_self_component_get_data(
  43                         bt_self_component_sink_as_self_component(comp));
  44         BT_ASSERT(dummy);
  45         destroy_private_dummy_data(dummy);
  46 }
  47
  48 BT_HIDDEN
  49 enum bt_self_component_status dummy_init(
  50                 struct bt_self_component_sink *component,
  51                 struct bt_value *params, UNUSED_VAR void *init_method_data)
  52 {
  53         enum bt_self_component_status ret;
  54         struct dummy *dummy = g_new0(struct dummy, 1);
  55
  56         if (!dummy) {
  57                 ret = BT_SELF_COMPONENT_STATUS_NOMEM;
  58                 goto end;
  59         }
  60
  61         ret = bt_self_component_sink_add_input_port(component,
  62                 "in", NULL, NULL);
  63         if (ret != BT_SELF_COMPONENT_STATUS_OK) {
  64                 goto error;
  65         }
  66
  67         bt_self_component_set_data(
  68                 bt_self_component_sink_as_self_component(component), dummy);
  69         goto end;
  70
  71 error:
  72         destroy_private_dummy_data(dummy);
  73
  74 end:
  75         return ret;
  76 }
  77
  78 BT_HIDDEN
  79 enum bt_self_component_status dummy_port_connected(
  80                 struct bt_self_component_sink *comp,
  81                 struct bt_self_component_port_input *self_port,
  82                 struct bt_port_output *other_port)
  83 {
  84         enum bt_self_component_status status = BT_SELF_COMPONENT_STATUS_OK;
  85         struct dummy *dummy;
  86         struct bt_self_component_port_input_notification_iterator *iterator;
  87
  88         dummy = bt_self_component_get_data(
  89                 bt_self_component_sink_as_self_component(comp));
  90         BT_ASSERT(dummy);
  91         iterator = bt_self_component_port_input_notification_iterator_create(
  92                 self_port);
  93         if (!iterator) {
  94                 status = BT_SELF_COMPONENT_STATUS_NOMEM;
  95                 goto end;
  96         }
  97
  98         BT_OBJECT_MOVE_REF(dummy->notif_iter, iterator);
  99
 100 end:
 101         return status;
 102 }
 103
 104 BT_HIDDEN
 105 enum bt_self_component_status dummy_consume(
 106                 struct bt_self_component_sink *component)
 107 {
 108         enum bt_self_component_status ret = BT_SELF_COMPONENT_STATUS_OK;
 109         bt_notification_array notifs;
 110         uint64_t count;
 111         struct dummy *dummy;
 112         enum bt_notification_iterator_status it_ret;
 113         uint64_t i;
 114
 115         dummy = bt_self_component_get_data(
 116                 bt_self_component_sink_as_self_component(component));
 117         BT_ASSERT(dummy);
 118
 119         if (unlikely(!dummy->notif_iter)) {
 120                 ret = BT_SELF_COMPONENT_STATUS_END;
 121                 goto end;
 122         }
 123
 124         /* Consume one notification  */
 125         it_ret = bt_self_component_port_input_notification_iterator_next(
 126                 dummy->notif_iter, &notifs, &count);
 127         switch (it_ret) {
 128         case BT_NOTIFICATION_ITERATOR_STATUS_OK:
 129                 ret = BT_SELF_COMPONENT_STATUS_OK;
 130
 131                 for (i = 0; i < count; i++) {
 132                         bt_object_put_ref(notifs[i]);
 133                 }
 134
 135                 break;
 136         case BT_NOTIFICATION_ITERATOR_STATUS_AGAIN:
 137                 ret = BT_SELF_COMPONENT_STATUS_AGAIN;
 138                 goto end;
 139         case BT_NOTIFICATION_ITERATOR_STATUS_END:
 140                 ret = BT_SELF_COMPONENT_STATUS_END;
 141                 goto end;
 142         case BT_NOTIFICATION_ITERATOR_STATUS_ERROR:
 143                 ret = BT_SELF_COMPONENT_STATUS_ERROR;
 144                 goto end;
 145         case BT_NOTIFICATION_ITERATOR_STATUS_NOMEM:
 146                 ret = BT_SELF_COMPONENT_STATUS_NOMEM;
 147                 goto end;
 148         default:
 149                 break;
 150         }
 151
 152 end:
 153         return ret;
 154 }