lib/trace-ir/field-path.c

   1 /*
   2  * field-path.c
   3  *
   4  * Babeltrace trace IR - Field path
   5  *
   6  * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   7  * Copyright 2016 Philippe Proulx <pproulx@efficios.com>
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a copy
  10  * of this software and associated documentation files (the "Software"), to deal
  11  * in the Software without restriction, including without limitation the rights
  12  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  13  * copies of the Software, and to permit persons to whom the Software is
  14  * furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included in
  17  * all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  22  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  23  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  24  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  25  * SOFTWARE.
  26  */
  27
  28 #define BT_LOG_TAG "FIELD-PATH"
  29 #include <babeltrace/lib-logging-internal.h>
  30
  31 #include <babeltrace/assert-pre-internal.h>
  32 #include <babeltrace/trace-ir/field-classes.h>
  33 #include <babeltrace/trace-ir/field-classes-internal.h>
  34 #include <babeltrace/trace-ir/field-path-internal.h>
  35 #include <babeltrace/trace-ir/field-path.h>
  36 #include <babeltrace/object.h>
  37 #include <limits.h>
  38 #include <stdint.h>
  39 #include <inttypes.h>
  40 #include <babeltrace/assert-internal.h>
  41 #include <glib.h>
  42
  43 static
  44 void destroy_field_path(struct bt_object *obj)
  45 {
  46         struct bt_field_path *field_path = (struct bt_field_path *) obj;
  47
  48         BT_ASSERT(field_path);
  49         BT_LIB_LOGD("Destroying field path: %!+P", field_path);
  50         g_array_free(field_path->indexes, TRUE);
  51         g_free(field_path);
  52 }
  53
  54 BT_HIDDEN
  55 struct bt_field_path *bt_field_path_create(void)
  56 {
  57         struct bt_field_path *field_path = NULL;
  58
  59         BT_LOGD_STR("Creating empty field path object.");
  60
  61         field_path = g_new0(struct bt_field_path, 1);
  62         if (!field_path) {
  63                 BT_LOGE_STR("Failed to allocate one field path.");
  64                 goto error;
  65         }
  66
  67         bt_object_init_shared(&field_path->base, destroy_field_path);
  68         field_path->indexes = g_array_new(FALSE, FALSE, sizeof(uint64_t));
  69         if (!field_path->indexes) {
  70                 BT_LOGE_STR("Failed to allocate a GArray.");
  71                 goto error;
  72         }
  73
  74         BT_LIB_LOGD("Created empty field path object: %!+P", field_path);
  75         goto end;
  76
  77 error:
  78         BT_OBJECT_PUT_REF_AND_RESET(field_path);
  79
  80 end:
  81         return field_path;
  82 }
  83
  84 enum bt_scope bt_field_path_get_root_scope(struct bt_field_path *field_path)
  85 {
  86         BT_ASSERT_PRE_NON_NULL(field_path, "Field path");
  87         return field_path->root;
  88 }
  89
  90 uint64_t bt_field_path_get_index_count(struct bt_field_path *field_path)
  91 {
  92         BT_ASSERT_PRE_NON_NULL(field_path, "Field path");
  93         return (uint64_t) field_path->indexes->len;
  94 }
  95
  96 uint64_t bt_field_path_get_index_by_index(struct bt_field_path *field_path,
  97                 uint64_t index)
  98 {
  99         BT_ASSERT_PRE_NON_NULL(field_path, "Field path");
 100         BT_ASSERT_PRE_VALID_INDEX(index, field_path->indexes->len);
 101         return bt_field_path_get_index_by_index_inline(field_path, index);
 102 }