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