modules_mobile/i18n/dao/include/wrt-commons/i18n-dao-ro/i18n_database.h

   1 /*
   2  * Copyright (c) 2012 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 #ifndef _I18N_DATABASE_H_
  18 #define _I18N_DATABASE_H_
  19
  20 #include <dpl/thread.h>
  21 #include <dpl/mutex.h>
  22 #include <dpl/db/thread_database_support.h>
  23
  24 namespace I18n {
  25 namespace DB {
  26 namespace Interface {
  27 void attachDatabaseRO();
  28 void detachDatabase();
  29
  30 extern DPL::Mutex g_dbQueriesMutex;
  31 extern DPL::DB::ThreadDatabaseSupport g_dbInterface;
  32 } // namespace Interface
  33 } // namespace DB
  34 } // namespace I18n
  35
  36 #define I18N_DB_INTERNAL(tlsCommand, InternalType)                             \
  37     static DPL::ThreadLocalVariable<InternalType> *tlsCommand##Ptr = NULL;     \
  38     {                                                                          \
  39         DPL::Mutex::ScopedLock lock(                                           \
  40             &I18n::DB::Interface::g_dbQueriesMutex);                           \
  41         if (!tlsCommand##Ptr) {                                                \
  42             static DPL::ThreadLocalVariable<InternalType> tmp;                 \
  43             tlsCommand##Ptr = &tmp;                                            \
  44         }                                                                      \
  45     }                                                                          \
  46     DPL::ThreadLocalVariable<InternalType> &tlsCommand = *tlsCommand##Ptr;     \
  47     if (tlsCommand.IsNull())                                                   \
  48     {                                                                          \
  49         tlsCommand = InternalType(&I18n::DB::Interface::g_dbInterface);        \
  50     }
  51
  52 #define I18N_DB_SELECT(name, type) \
  53     I18N_DB_INTERNAL(name, type::Select)
  54
  55 #endif /* _I18N_DATABASE_H_ */
  56