release/src/router/mysql/storage/ndb/src/ndbapi/NdbPool.cpp

   1 /* Copyright (c) 2003, 2005 MySQL AB
   2
   3    This program is free software; you can redistribute it and/or modify
   4    it under the terms of the GNU General Public License as published by
   5    the Free Software Foundation; version 2 of the License.
   6
   7    This program is distributed in the hope that it will be useful,
   8    but WITHOUT ANY WARRANTY; without even the implied warranty of
   9    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10    GNU General Public License for more details.
  11
  12    You should have received a copy of the GNU General Public License
  13    along with this program; if not, write to the Free Software
  14    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA */
  15
  16 #include <Ndb.hpp>
  17 #include "NdbPoolImpl.hpp"
  18 #include <NdbPool.hpp>
  19
  20 static NdbPool* m_pool = 0;
  21
  22 bool
  23 create_instance(Ndb_cluster_connection* cc,
  24                 Uint32 max_ndb_objects,
  25                 Uint32 no_conn_obj,
  26                 Uint32 init_no_ndb_objects)
  27 {
  28   if (m_pool != NULL) {
  29     return false;
  30   }
  31   m_pool = NdbPool::create_instance(cc,
  32                                     max_ndb_objects,
  33                                     no_conn_obj,
  34                                     init_no_ndb_objects);
  35   if (m_pool == NULL) {
  36     return false;
  37   }
  38   return true;
  39 }
  40
  41 void
  42 drop_instance()
  43 {
  44   if (m_pool == NULL) {
  45     return;
  46   }
  47   NdbPool::drop_instance();
  48   m_pool = NULL;
  49 }
  50
  51 Ndb*
  52 get_ndb_object(Uint32 &hint_id,
  53                const char* a_catalog_name,
  54                const char* a_schema_name)
  55 {
  56   if (m_pool == NULL) {
  57     return NULL;
  58   }
  59   return m_pool->get_ndb_object(hint_id, a_catalog_name, a_schema_name);
  60 }
  61
  62 void
  63 return_ndb_object(Ndb* returned_object, Uint32 id)
  64 {
  65   if (m_pool == NULL) {
  66     return;
  67   }
  68   m_pool->return_ndb_object(returned_object, id);
  69 }
  70