src/lib/trace-ir/field-wrapper.c

   1 /*
   2  * Copyright 2018 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 #define BT_LOG_TAG "LIB/FIELD-WRAPPER"
  24 #include "lib/logging.h"
  25
  26 #include "lib/object-pool.h"
  27 #include "lib/object.h"
  28 #include <glib.h>
  29
  30 #include "field-wrapper.h"
  31 #include "field.h"
  32
  33 BT_HIDDEN
  34 struct bt_field_wrapper *bt_field_wrapper_new(void *data)
  35 {
  36         struct bt_field_wrapper *field_wrapper =
  37                 g_new0(struct bt_field_wrapper, 1);
  38
  39         BT_LOGD_STR("Creating empty field wrapper object.");
  40
  41         if (!field_wrapper) {
  42                 BT_LIB_LOGE_APPEND_CAUSE(
  43                         "Failed to allocate one field wrapper.");
  44                 goto end;
  45         }
  46
  47         bt_object_init_unique(&field_wrapper->base);
  48         BT_LOGD("Created empty field wrapper object: addr=%p",
  49                 field_wrapper);
  50
  51 end:
  52         return field_wrapper;
  53 }
  54
  55 BT_HIDDEN
  56 void bt_field_wrapper_destroy(struct bt_field_wrapper *field_wrapper)
  57 {
  58         BT_LOGD("Destroying field wrapper: addr=%p", field_wrapper);
  59
  60         if (field_wrapper->field) {
  61                 BT_LOGD_STR("Destroying field.");
  62                 bt_field_destroy((void *) field_wrapper->field);
  63                 field_wrapper->field = NULL;
  64         }
  65
  66         BT_LOGD_STR("Putting stream class.");
  67         g_free(field_wrapper);
  68 }
  69
  70 BT_HIDDEN
  71 struct bt_field_wrapper *bt_field_wrapper_create(
  72                 struct bt_object_pool *pool, struct bt_field_class *fc)
  73 {
  74         struct bt_field_wrapper *field_wrapper = NULL;
  75
  76         BT_ASSERT_DBG(pool);
  77         BT_ASSERT_DBG(fc);
  78         field_wrapper = bt_object_pool_create_object(pool);
  79         if (!field_wrapper) {
  80                 BT_LIB_LOGE_APPEND_CAUSE(
  81                         "Cannot allocate one field wrapper from field wrapper pool: "
  82                         "%![pool-]+o", pool);
  83                 goto error;
  84         }
  85
  86         if (!field_wrapper->field) {
  87                 field_wrapper->field = (void *) bt_field_create(fc);
  88                 if (!field_wrapper->field) {
  89                         BT_LIB_LOGE_APPEND_CAUSE(
  90                                 "Cannot create field wrapper from field class: "
  91                                 "%![fc-]+F", fc);
  92                         goto error;
  93                 }
  94
  95                 BT_LIB_LOGD("Created initial field wrapper object: "
  96                         "wrapper-addr=%p, %![field-]+f", field_wrapper,
  97                         field_wrapper->field);
  98         }
  99
 100         goto end;
 101
 102 error:
 103         if (field_wrapper) {
 104                 bt_field_wrapper_destroy(field_wrapper);
 105                 field_wrapper = NULL;
 106         }
 107
 108 end:
 109         return field_wrapper;
 110 }