src/esi/Segment.h

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