TAO/tao/PortableServer/Operation_Table_Dynamic_Hash.h

   1 // -*- C++ -*-
   2
   3 //=============================================================================
   4 /**
   5  *  @file    Operation_Table_Dynamic_Hash.h
   6  *
   7  *  @author Aniruddha Gokhale
   8  */
   9 //=============================================================================
  10
  11 #ifndef TAO_OPERATION_TABLE_DYNAMIC_HASH_H
  12 #define TAO_OPERATION_TABLE_DYNAMIC_HASH_H
  13
  14 #include /**/ "ace/pre.h"
  15
  16 #include "tao/PortableServer/portableserver_export.h"
  17
  18 #if !defined (ACE_LACKS_PRAGMA_ONCE)
  19 # pragma once
  20 #endif /* ACE_LACKS_PRAGMA_ONCE */
  21
  22 #include "tao/PortableServer/Operation_Table.h"
  23 #include "ace/Hash_Map_Manager.h"
  24 #include "ace/Synch_Traits.h"
  25 #include "ace/Null_Mutex.h"
  26
  27 TAO_BEGIN_VERSIONED_NAMESPACE_DECL
  28
  29 /**
  30  * @class TAO_Dynamic_Hash_OpTable
  31  *
  32  * @brief Dynamic Hashing scheme for CORBA IDL operation name lookup.
  33  */
  34 class TAO_PortableServer_Export TAO_Dynamic_Hash_OpTable
  35   : public TAO_Operation_Table
  36 {
  37 public:
  38   /**
  39    * Initialize the dynamic hash operation table with a database of
  40    * operation names. The hash table size may be different from the
  41    * size of the database. Hence we use the third argument to specify
  42    * the size of the internal hash table.  The @a alloc argument is
  43    * used to determine where the memory comes from (usually from
  44    * ACE_Static_Allocator_Base).
  45    */
  46   TAO_Dynamic_Hash_OpTable (const TAO_operation_db_entry *db,
  47                             CORBA::ULong dbsize,
  48                             CORBA::ULong hashtblsize,
  49                             ACE_Allocator *alloc);
  50
  51   /// Destructor
  52   ~TAO_Dynamic_Hash_OpTable ();
  53
  54   /// See the documentation in the base class for details.
  55   virtual int bind (const char *opname,
  56                     const TAO::Operation_Skeletons skel_ptr);
  57
  58   virtual int find (const char *opname,
  59                     TAO_Skeleton &skelfunc,
  60                     const unsigned int length = 0);
  61
  62   virtual int find (const char *opname,
  63                     TAO_Collocated_Skeleton &skelfunc,
  64                     TAO::Collocation_Strategy s,
  65                     const unsigned int length = 0);
  66 private:
  67   typedef ACE_Hash_Map_Manager_Ex<const char *,
  68                                   TAO::Operation_Skeletons,
  69                                   ACE_Hash<const char *>,
  70                                   ACE_Equal_To<const char *>,
  71                                   ACE_Null_Mutex>
  72         OP_MAP_MANAGER;
  73
  74   /// The hash table data structure.
  75   OP_MAP_MANAGER hash_;
  76 };
  77
  78 TAO_END_VERSIONED_NAMESPACE_DECL
  79
  80 #include /**/ "ace/post.h"
  81 #endif /* TAO_OPERATION_TABLE_DYNAMIC_HASH_H */