src/esi/Segment.h

   1 /*
   2  * $Id$
   3  *
   4  *
   5  * SQUID Web Proxy Cache          http://www.squid-cache.org/
   6  * ----------------------------------------------------------
   7  *
   8  *  Squid is the result of efforts by numerous individuals from
   9  *  the Internet community; see the CONTRIBUTORS file for full
  10  *  details.   Many organizations have provided support for Squid's
  11  *  development; see the SPONSORS file for full details.  Squid is
  12  *  Copyrighted (C) 2001 by the Regents of the University of
  13  *  California; see the COPYRIGHT file for full details.  Squid
  14  *  incorporates software developed and/or copyrighted by other
  15  *  sources; see the CREDITS file for full details.
  16  *
  17  *  This program is free software; you can redistribute it and/or modify
  18  *  it under the terms of the GNU General Public License as published by
  19  *  the Free Software Foundation; either version 2 of the License, or
  20  *  (at your option) any later version.
  21  *
  22  *  This program is distributed in the hope that it will be useful,
  23  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  *  GNU General Public License for more details.
  26  *
  27  *  You should have received a copy of the GNU General Public License
  28  *  along with this program; if not, write to the Free Software
  29  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  30  *
  31  */
  32
  33 #ifndef SQUID_ESISEGMENT_H
  34 #define SQUID_ESISEGMENT_H
  35
  36 /* TODO: Factor the store memory segment management into a reusable code block
  37  * or perhaps use membuffers here?
  38  */
  39
  40 #include "cbdata.h"
  41 #include "RefCount.h"
  42 #include "SquidString.h"
  43
  44 class ESISegment : public RefCountable
  45 {
  46
  47 public:
  48     typedef RefCount<ESISegment> Pointer;
  49     static void ListAppend (Pointer &, char const *, size_t);
  50     static void ListTransfer (Pointer &from, Pointer &to);
  51     void *operator new (size_t byteCount);
  52     void operator delete (void *address);
  53
  54     ESISegment();
  55     ESISegment(ESISegment const &);
  56     ESISegment::Pointer cloneList() const;
  57     char *listToChar() const;
  58     void listAppend (char const *s, size_t length);
  59     void adsorbList (ESISegment::Pointer from);
  60     size_t space() const;
  61
  62
  63     char buf[HTTP_REQBUF_SZ];
  64     size_t len; /* how much data has been pushed into this */
  65     Pointer next;
  66     size_t append(char const *, size_t);
  67     size_t append (Pointer);
  68     ESISegment const *tail() const;
  69     ESISegment *tail();
  70     void dumpToLog() const;
  71
  72 private:
  73     size_t listLength()const;
  74     void dumpOne() const;
  75 };
  76
  77 extern void ESISegmentFreeList (ESISegment::Pointer &head);
  78
  79 #endif /* SQUID_ESISEGMENT_H */