src/mem_node.h

   1 /*
   2  * Copyright (C) 1996-2017 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 #ifndef SQUID_MEM_NODE_H
  10 #define SQUID_MEM_NODE_H
  11
  12 #include "defines.h"
  13 #include "mem/forward.h"
  14 #include "Range.h"
  15 #include "StoreIOBuffer.h"
  16
  17 class mem_node
  18 {
  19     MEMPROXY_CLASS(mem_node);
  20
  21 public:
  22     static size_t InUseCount();
  23     static size_t StoreMemSize();
  24
  25     mem_node(int64_t);
  26     ~mem_node();
  27     size_t space() const;
  28     int64_t start() const;
  29     int64_t end() const;
  30     Range<int64_t> dataRange() const;
  31     bool contains (int64_t const &location) const;
  32     bool canAccept (int64_t const &location) const;
  33     bool operator < (mem_node const & rhs) const;
  34     /* public */
  35     StoreIOBuffer nodeBuffer;
  36     /* Private */
  37     char data[SM_PAGE_SIZE];
  38     bool write_pending;
  39 };
  40
  41 inline std::ostream &
  42 operator << (std::ostream &os, mem_node &aNode)
  43 {
  44     os << aNode.nodeBuffer.range();
  45     return os;
  46 }
  47
  48 void memNodeWriteComplete(void *);
  49
  50 #endif /* SQUID_MEM_NODE_H */
  51