ACE/ace/Message_Block_T.h

   1 /* -*- C++ -*- */
   2
   3 //=============================================================================
   4 /**
   5  *  @file    Message_Block_T.h
   6  *
   7  *  @author Douglas C. Schmidt <d.schmidt@vanderbilt.edu>
   8  *  @author Carlos O'Ryan <coryan@atdesk.com>
   9  */
  10 //=============================================================================
  11
  12 #ifndef ACE_MESSAGE_BLOCK_T_H
  13 #define ACE_MESSAGE_BLOCK_T_H
  14 #include /**/ "ace/pre.h"
  15
  16 #include "ace/Message_Block.h"
  17
  18 #if !defined (ACE_LACKS_PRAGMA_ONCE)
  19 # pragma once
  20 #endif /* ACE_LACKS_PRAGMA_ONCE */
  21
  22 ACE_BEGIN_VERSIONED_NAMESPACE_DECL
  23
  24 /**
  25  * @class ACE_Locked_Data_Block
  26  *
  27  * @brief A Data_Block with a concrete locking strategy.
  28  *
  29  * Data_Blocks can be parametric on the kind of lock they use; in
  30  * many cases the lifetime of the lock is tied to the lifetime of
  31  * the Data_Block itself. But since Data_Blocks are reference
  32  * counted it is hard for users to control the lock lifetime.
  33  * This class is parametric over the kind of lock used.
  34  */
  35 template <class ACE_LOCK>
  36 class ACE_Locked_Data_Block : public ACE_Data_Block
  37 {
  38 public:
  39   /// Default "do-nothing" constructor.
  40   ACE_Locked_Data_Block ();
  41
  42   /// Initialize.
  43   ACE_Locked_Data_Block (size_t size,
  44                          ACE_Message_Block::ACE_Message_Type msg_type,
  45                          const char *msg_data,
  46                          ACE_Allocator *allocator_strategy,
  47                          ACE_Message_Block::Message_Flags flags,
  48                          ACE_Allocator *data_block_allocator);
  49
  50   /// Delete all the resources held in the message.
  51   virtual ~ACE_Locked_Data_Block ();
  52
  53   /**
  54    * Return an exact "deep copy" of the message, the dynamic type is
  55    * ACE_Locked_Data_Block<>
  56    * See the documentation in Message_Block.h for details.
  57    */
  58   virtual ACE_Data_Block *clone_nocopy (ACE_Message_Block::Message_Flags mask = 0,
  59                                         size_t max_size = 0) const;
  60
  61 private:
  62   /// The lock
  63   ACE_LOCK lock_;
  64
  65   // = Disallow these operations.
  66   ACE_Locked_Data_Block<ACE_LOCK> &operator= (const ACE_Locked_Data_Block<ACE_LOCK> &) = delete;
  67   ACE_Locked_Data_Block (const ACE_Locked_Data_Block<ACE_LOCK> &) = delete;
  68 };
  69
  70 ACE_END_VERSIONED_NAMESPACE_DECL
  71
  72 #if defined (__ACE_INLINE__)
  73 #include "ace/Message_Block_T.inl"
  74 #endif /* __ACE_INLINE__ */
  75
  76 #include "ace/Message_Block_T.cpp"
  77
  78 #include /**/ "ace/post.h"
  79 #endif /* ACE_MESSAGE_BLOCK_T_H */