ACE/ace/Obchunk.h

   1 // -*- C++ -*-
   2
   3 //=============================================================================
   4 /**
   5  *  @file    Obchunk.h
   6  *
   7  *  @author Doug Schmidt
   8  */
   9 //=============================================================================
  10
  11 #ifndef ACE_OBCHUNK_H
  12 #define ACE_OBCHUNK_H
  13 #include /**/ "ace/pre.h"
  14
  15 #include "ace/Malloc.h"
  16
  17 #if !defined (ACE_LACKS_PRAGMA_ONCE)
  18 # pragma once
  19 #endif /* ACE_LACKS_PRAGMA_ONCE */
  20
  21 ACE_BEGIN_VERSIONED_NAMESPACE_DECL
  22
  23 /**
  24  * @class ACE_Obchunk
  25  *
  26  * @brief Defines the state that represents a "chunk" of memory.
  27  *        Evenything in this class is public because it is designed
  28  *        as an internal structure of Obstack_T and users are
  29  *        not supposed to use this class directly.
  30  * @sa ACE_Obstack_T
  31  */
  32 class ACE_Export ACE_Obchunk
  33 {
  34 public:
  35   /// Constructor.
  36   ACE_Obchunk (size_t size);
  37
  38   /// Dtor.
  39   ~ACE_Obchunk () = default;
  40
  41   /// Dump the state of an object.
  42   void dump () const;
  43
  44   /// Declare the dynamic allocation hooks.
  45   ACE_ALLOC_HOOK_DECLARE;
  46
  47   /// Pointer to the end of the chunk.
  48   char *end_;
  49
  50   /// Pointer to the head of the current building block.
  51   char *block_;
  52
  53   /// Pointer to the current location in the chunk.
  54   char *cur_;
  55
  56   /// Next chunk in the chain.
  57   ACE_Obchunk *next_;
  58
  59   /**
  60    * Pointer to the beginning contents of this chunk.  This field is
  61    * actually overlayed by the memory allocated by
  62    * <ACE_Obstack::new_chunk>.  Therefore, it *must* come last.
  63    */
  64   char contents_[4];
  65 };
  66
  67 ACE_END_VERSIONED_NAMESPACE_DECL
  68
  69 #include /**/ "ace/post.h"
  70 #endif /* ACE_OBCHUNK_H */