lib/trace-ir/field-path.c

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