src/lib/graph/message-iterator-class.c

   1 /*
   2  * Copyright 2019 EfficiOS, Inc.
   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/MESSAGE-ITERATOR-CLASS"
  24 #include "lib/logging.h"
  25
  26 #include "message-iterator-class.h"
  27
  28 #include "compat/compiler.h"
  29 #include "lib/assert-pre.h"
  30 #include "lib/func-status.h"
  31
  32 #define BT_ASSERT_PRE_DEV_MSG_ITER_CLS_HOT(_msg_iter_cls) \
  33         BT_ASSERT_PRE_DEV_HOT((_msg_iter_cls), \
  34                 "Message iterator class", ": %!+I", (_msg_iter_cls))
  35
  36 BT_HIDDEN
  37 void _bt_message_iterator_class_freeze(
  38                 const struct bt_message_iterator_class *msg_iter_cls)
  39 {
  40         BT_ASSERT(msg_iter_cls);
  41         BT_LIB_LOGD("Freezing message iterator class: %!+I", msg_iter_cls);
  42         ((struct bt_message_iterator_class *) msg_iter_cls)->frozen = true;
  43 }
  44
  45 void bt_message_iterator_class_get_ref(
  46                 const bt_message_iterator_class *message_iterator_class)
  47 {
  48         bt_object_get_ref(message_iterator_class);
  49 }
  50
  51 void bt_message_iterator_class_put_ref(
  52                 const bt_message_iterator_class *message_iterator_class)
  53 {
  54         bt_object_put_ref(message_iterator_class);
  55 }
  56
  57 static
  58 void destroy_iterator_class(struct bt_object *obj)
  59 {
  60         struct bt_message_iterator_class *class;
  61
  62         BT_ASSERT(obj);
  63         class = container_of(obj, struct bt_message_iterator_class, base);
  64
  65         BT_LIB_LOGI("Destroying message iterator class: %!+I", class);
  66
  67         g_free(class);
  68 }
  69
  70 struct bt_message_iterator_class *bt_message_iterator_class_create(
  71                 bt_message_iterator_class_next_method next_method)
  72 {
  73         struct bt_message_iterator_class *message_iterator_class;
  74
  75         BT_ASSERT_PRE_NO_ERROR();
  76         BT_ASSERT_PRE_NON_NULL(next_method, "Next method");
  77         BT_LOGI("Creating message iterator class: next-method-addr=%p",
  78                 next_method);
  79
  80         message_iterator_class = g_new0(struct bt_message_iterator_class, 1);
  81         if (!message_iterator_class) {
  82                 BT_LIB_LOGE_APPEND_CAUSE(
  83                         "Failed to allocate one message iterator class.");
  84                 goto end;
  85         }
  86
  87         bt_object_init_shared(&message_iterator_class->base, destroy_iterator_class);
  88
  89         message_iterator_class->methods.next = next_method;
  90
  91 end:
  92         return message_iterator_class;
  93 }
  94
  95 bt_message_iterator_class_set_method_status
  96 bt_message_iterator_class_set_initialize_method(
  97         bt_message_iterator_class *message_iterator_class,
  98         bt_message_iterator_class_initialize_method method)
  99 {
 100         BT_ASSERT_PRE_NO_ERROR();
 101         BT_ASSERT_PRE_NON_NULL(message_iterator_class, "Message iterator class");
 102         BT_ASSERT_PRE_NON_NULL(method, "Method");
 103         BT_ASSERT_PRE_DEV_MSG_ITER_CLS_HOT(message_iterator_class);
 104         message_iterator_class->methods.initialize = method;
 105         BT_LIB_LOGD("Set message iterator class's iterator initialization method"
 106                 ": %!+I", message_iterator_class);
 107         return BT_FUNC_STATUS_OK;
 108 }
 109
 110 bt_message_iterator_class_set_method_status
 111 bt_message_iterator_class_set_finalize_method(
 112                 bt_message_iterator_class *message_iterator_class,
 113                 bt_message_iterator_class_finalize_method method)
 114 {
 115         BT_ASSERT_PRE_NO_ERROR();
 116         BT_ASSERT_PRE_NON_NULL(message_iterator_class, "Message iterator class");
 117         BT_ASSERT_PRE_NON_NULL(method, "Method");
 118         BT_ASSERT_PRE_DEV_MSG_ITER_CLS_HOT(message_iterator_class);
 119         message_iterator_class->methods.finalize = method;
 120         BT_LIB_LOGD("Set message iterator class's finalization method"
 121                 ": %!+I", message_iterator_class);
 122         return BT_FUNC_STATUS_OK;
 123 }
 124
 125 bt_message_iterator_class_set_method_status
 126 bt_message_iterator_class_set_seek_ns_from_origin_methods(
 127                 bt_message_iterator_class *message_iterator_class,
 128                 bt_message_iterator_class_seek_ns_from_origin_method seek_method,
 129                 bt_message_iterator_class_can_seek_ns_from_origin_method can_seek_method)
 130 {
 131         BT_ASSERT_PRE_NO_ERROR();
 132         BT_ASSERT_PRE_NON_NULL(message_iterator_class, "Message iterator class");
 133         BT_ASSERT_PRE_NON_NULL(seek_method, "Seek method");
 134         BT_ASSERT_PRE_DEV_MSG_ITER_CLS_HOT(message_iterator_class);
 135         message_iterator_class->methods.seek_ns_from_origin = seek_method;
 136         message_iterator_class->methods.can_seek_ns_from_origin = can_seek_method;
 137         BT_LIB_LOGD("Set message iterator class's \"seek nanoseconds from origin\" method"
 138                 ": %!+I", message_iterator_class);
 139         return BT_FUNC_STATUS_OK;
 140 }
 141
 142 bt_message_iterator_class_set_method_status
 143 bt_message_iterator_class_set_seek_beginning_methods(
 144                 bt_message_iterator_class *message_iterator_class,
 145                 bt_message_iterator_class_seek_beginning_method seek_method,
 146                 bt_message_iterator_class_can_seek_beginning_method can_seek_method)
 147 {
 148         BT_ASSERT_PRE_NO_ERROR();
 149         BT_ASSERT_PRE_NON_NULL(message_iterator_class, "Message iterator class");
 150         BT_ASSERT_PRE_NON_NULL(seek_method, "Seek method");
 151         BT_ASSERT_PRE_DEV_MSG_ITER_CLS_HOT(message_iterator_class);
 152         message_iterator_class->methods.seek_beginning = seek_method;
 153         message_iterator_class->methods.can_seek_beginning = can_seek_method;
 154         BT_LIB_LOGD("Set message iterator class's \"seek beginning\" methods"
 155                 ": %!+C", message_iterator_class);
 156         return BT_FUNC_STATUS_OK;
 157 }