src/mem_node.h

   1
   2 /*
   3  *
   4  * SQUID Web Proxy Cache          http://www.squid-cache.org/
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   6  *
   7  *  Squid is the result of efforts by numerous individuals from
   8  *  the Internet community; see the CONTRIBUTORS file for full
   9  *  details.   Many organizations have provided support for Squid's
  10  *  development; see the SPONSORS file for full details.  Squid is
  11  *  Copyrighted (C) 2001 by the Regents of the University of
  12  *  California; see the COPYRIGHT file for full details.  Squid
  13  *  incorporates software developed and/or copyrighted by other
  14  *  sources; see the CREDITS file for full details.
  15  *
  16  *  This program is free software; you can redistribute it and/or modify
  17  *  it under the terms of the GNU General Public License as published by
  18  *  the Free Software Foundation; either version 2 of the License, or
  19  *  (at your option) any later version.
  20  *
  21  *  This program is distributed in the hope that it will be useful,
  22  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  *  GNU General Public License for more details.
  25  *
  26  *  You should have received a copy of the GNU General Public License
  27  *  along with this program; if not, write to the Free Software
  28  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  29  *
  30  */
  31
  32 #ifndef SQUID_MEM_NODE_H
  33 #define SQUID_MEM_NODE_H
  34
  35 #include "defines.h"
  36 #include "MemPool.h"
  37 #include "StoreIOBuffer.h"
  38 #include "Range.h"
  39
  40 class mem_node
  41 {
  42
  43 public:
  44     static size_t InUseCount();
  45     static size_t StoreMemSize();
  46
  47     MEMPROXY_CLASS(mem_node);
  48     mem_node(int64_t);
  49     ~mem_node();
  50     size_t space() const;
  51     int64_t start() const;
  52     int64_t end() const;
  53     Range<int64_t> dataRange() const;
  54     bool contains (int64_t const &location) const;
  55     bool canAccept (int64_t const &location) const;
  56     bool operator < (mem_node const & rhs) const;
  57     /* public */
  58     StoreIOBuffer nodeBuffer;
  59     /* Private */
  60     char data[SM_PAGE_SIZE];
  61     unsigned int write_pending:1;
  62 };
  63
  64 MEMPROXY_CLASS_INLINE(mem_node);
  65
  66 inline std::ostream &
  67 operator << (std::ostream &os, mem_node &aNode)
  68 {
  69     os << aNode.nodeBuffer.range();
  70     return os;
  71 }
  72
  73 void memNodeWriteComplete(void *);
  74
  75 #endif /* SQUID_MEM_NODE_H */