modules/core/include/dpl/static_block.h

   1 /*
   2  * Copyright (c) 2013 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   4  *    Licensed under the Apache License, Version 2.0 (the "License");
   5  *    you may not use this file except in compliance with the License.
   6  *    You may obtain a copy of the License at
   7  *
   8  *        http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  *    Unless required by applicable law or agreed to in writing, software
  11  *    distributed under the License is distributed on an "AS IS" BASIS,
  12  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  *    See the License for the specific language governing permissions and
  14  *    limitations under the License.
  15  */
  16 /*
  17  * @file        static_block.h
  18  * @author      Iwanek Tomasz (t.iwanek@samsung.com)
  19  * @version     1.0
  20  */
  21 #ifndef STATIC_BLOCK_H
  22 #define STATIC_BLOCK_H
  23
  24 #include <dpl/preprocessor.h>
  25
  26 //NOTE: order of static initialization of blocks is not specified
  27
  28 // to be used only outside class of function scopes
  29 #define STATIC_BLOCK_IMPL( UNIQUE )                                                                 \
  30     static void DPL_MACRO_CONCAT( _staticBlock , UNIQUE() );                                        \
  31     static int DPL_MACRO_CONCAT( _staticBlockInitAssurence , UNIQUE ) = []() -> int                 \
  32     {                                                                                               \
  33         (void) DPL_MACRO_CONCAT( _staticBlockInitAssurence , UNIQUE );                              \
  34         DPL_MACRO_CONCAT( _staticBlock ,  UNIQUE() );                                               \
  35         return 0;                                                                                   \
  36     }();                                                                                            \
  37     void DPL_MACRO_CONCAT( _staticBlock , UNIQUE() )                                                \
  38
  39 #define STATIC_BLOCK                                                                                \
  40     STATIC_BLOCK_IMPL( __COUNTER__ )                                                               \
  41
  42 //for class implementation
  43 #define STATIC_BLOCK_CLASS( classname, methodname ) STATIC_BLOCK { classname::methodname(); }
  44
  45 #endif // STATIC_BLOCK_H