src/DelayPools.h

   1
   2 /*
   3  * $Id: DelayPools.h,v 1.2 2003/02/21 22:50:05 robertc Exp $
   4  *
   5  *
   6  * SQUID Web Proxy Cache          http://www.squid-cache.org/
   7  * ----------------------------------------------------------
   8  *
   9  *  Squid is the result of efforts by numerous individuals from
  10  *  the Internet community; see the CONTRIBUTORS file for full
  11  *  details.   Many organizations have provided support for Squid's
  12  *  development; see the SPONSORS file for full details.  Squid is
  13  *  Copyrighted (C) 2001 by the Regents of the University of
  14  *  California; see the COPYRIGHT file for full details.  Squid
  15  *  incorporates software developed and/or copyrighted by other
  16  *  sources; see the CREDITS file for full details.
  17  *
  18  *  This program is free software; you can redistribute it and/or modify
  19  *  it under the terms of the GNU General Public License as published by
  20  *  the Free Software Foundation; either version 2 of the License, or
  21  *  (at your option) any later version.
  22  *
  23  *  This program is distributed in the hope that it will be useful,
  24  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  25  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  26  *  GNU General Public License for more details.
  27  *
  28  *  You should have received a copy of the GNU General Public License
  29  *  along with this program; if not, write to the Free Software
  30  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  31  *
  32  *
  33  * Copyright (c) 2003, Robert Collins <robertc@squid-cache.org>
  34  */
  35
  36 #ifndef SQUID_DELAYPOOLS_H
  37 #define SQUID_DELAYPOOLS_H
  38
  39 #include "Array.h"
  40
  41 class Updateable
  42 {
  43
  44 public:
  45     virtual ~Updateable(){}
  46
  47     virtual void update(int) = 0;
  48 };
  49
  50 class DelayPool;
  51
  52 class DelayPools
  53 {
  54
  55 public:
  56     static void Init();
  57     static void Update(void *);
  58     static void SetNoDelay(int fd);
  59     static void ClearNoDelay(int fd);
  60     static bool IsNoDelay(int fd);
  61     static unsigned short pools();
  62     static void pools (u_short pools);
  63     static void FreePools();
  64     static unsigned char *DelayClasses();
  65     static void registerForUpdates(Updateable *);
  66     static void deregisterForUpdates (Updateable *);
  67     static long MemoryUsed;
  68     static DelayPool *delay_data;
  69
  70 private:
  71     static void Stats(StoreEntry *);
  72     static void InitDelayData();
  73     static time_t LastUpdate;
  74     static fd_set delay_no_delay;
  75     static unsigned short pools_;
  76     static void FreeDelayData ();
  77     static Vector<Updateable *> toUpdate;
  78 };
  79
  80 #endif /* SQUID_DELAYPOOLS_H */