src/DelayTagged.cc

   1
   2 /*
   3  * $Id: DelayTagged.cc,v 1.3 2003/05/22 11:14:43 robertc Exp $
   4  *
   5  * DEBUG: section 77    Delay Pools
   6  * AUTHOR: Robert Collins <robertc@squid-cache.org>
   7  *
   8  * SQUID Web Proxy Cache          http://www.squid-cache.org/
   9  * ----------------------------------------------------------
  10  *
  11  *  Squid is the result of efforts by numerous individuals from
  12  *  the Internet community; see the CONTRIBUTORS file for full
  13  *  details.   Many organizations have provided support for Squid's
  14  *  development; see the SPONSORS file for full details.  Squid is
  15  *  Copyrighted (C) 2001 by the Regents of the University of
  16  *  California; see the COPYRIGHT file for full details.  Squid
  17  *  incorporates software developed and/or copyrighted by other
  18  *  sources; see the CREDITS file for full details.
  19  *
  20  *  This program is free software; you can redistribute it and/or modify
  21  *  it under the terms of the GNU General Public License as published by
  22  *  the Free Software Foundation; either version 2 of the License, or
  23  *  (at your option) any later version.
  24  *
  25  *  This program is distributed in the hope that it will be useful,
  26  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  27  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  28  *  GNU General Public License for more details.
  29  *
  30  *  You should have received a copy of the GNU General Public License
  31  *  along with this program; if not, write to the Free Software
  32  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  33  *
  34  *
  35  * Copyright (c) 2003, Robert Collins <robertc@squid-cache.org>
  36  */
  37
  38 #include "config.h"
  39
  40 #if DELAY_POOLS
  41 #include "squid.h"
  42 #include "DelayTagged.h"
  43 #include "authenticate.h"
  44 #include "NullDelayId.h"
  45 #include "Store.h"
  46
  47 void *
  48 DelayTagged::operator new(size_t size)
  49 {
  50     DelayPools::MemoryUsed += sizeof (DelayTagged);
  51     return ::operator new (size);
  52 }
  53
  54 void
  55 DelayTagged::operator delete (void *address)
  56 {
  57     DelayPools::MemoryUsed -= sizeof (DelayTagged);
  58     ::operator delete (address);
  59 }
  60
  61 void
  62 DelayTagged::deleteSelf() const
  63 {
  64     delete this;
  65 }
  66
  67 DelayTagged::DelayTagged()
  68 {
  69     DelayPools::registerForUpdates (this);
  70 }
  71
  72 static SplayNode<DelayTaggedBucket::Pointer>::SPLAYFREE DelayTaggedFree;
  73
  74 DelayTagged::~DelayTagged()
  75 {
  76     DelayPools::deregisterForUpdates (this);
  77     buckets.head->destroy (DelayTaggedFree);
  78 }
  79
  80 static SplayNode<DelayTaggedBucket::Pointer>::SPLAYCMP DelayTaggedCmp;
  81
  82 int
  83 DelayTaggedCmp(DelayTaggedBucket::Pointer const &left, DelayTaggedBucket::Pointer const &right)
  84 {
  85     /* for rate limiting, case insensitive */
  86     return left->tag.caseCmp(right->tag.buf());
  87 }
  88
  89 void
  90 DelayTaggedFree(DelayTaggedBucket::Pointer &)
  91 {}
  92
  93 void
  94 DelayTaggedStatsWalkee(DelayTaggedBucket::Pointer const &current, void *state)
  95 {
  96     current->stats ((StoreEntry *)state);
  97 }
  98
  99 void
 100 DelayTagged::stats(StoreEntry * sentry)
 101 {
 102     spec.stats (sentry, "Per Tag");
 103
 104     if (spec.restore_bps == -1)
 105         return;
 106
 107     storeAppendPrintf(sentry, "\t\tCurrent: ");
 108
 109     if (!buckets.head) {
 110         storeAppendPrintf (sentry, "Not used yet.\n\n");
 111         return;
 112     }
 113
 114     buckets.head->walk(DelayTaggedStatsWalkee, sentry);
 115     storeAppendPrintf(sentry, "\n\n");
 116 }
 117
 118 void
 119 DelayTagged::dump(StoreEntry *entry) const
 120 {
 121     spec.dump(entry);
 122 }
 123
 124 struct DelayTaggedUpdater
 125 {
 126     DelayTaggedUpdater (DelaySpec &_spec, int _incr):spec(_spec),incr(_incr){};
 127
 128     DelaySpec spec;
 129     int incr;
 130 };
 131
 132 void
 133 DelayTaggedUpdateWalkee(DelayTaggedBucket::Pointer const &current, void *state)
 134 {
 135     DelayTaggedUpdater *t = (DelayTaggedUpdater *)state;
 136     /* This doesn't change the value of the DelayTaggedBucket, so is safe */
 137     const_cast<DelayTaggedBucket *>(current.getRaw())->theBucket.update(t->spec, t->incr);
 138 }
 139
 140 void
 141 DelayTagged::update(int incr)
 142 {
 143     DelayTaggedUpdater updater(spec, incr);
 144     buckets.head->walk (DelayTaggedUpdateWalkee, &updater);
 145     kickReads();
 146 }
 147
 148 void
 149 DelayTagged::parse()
 150 {
 151     spec.parse();
 152 }
 153
 154 DelayIdComposite::Pointer
 155
 156 DelayTagged::id(CompositePoolNode::CompositeSelectionDetails &details)
 157 {
 158     if (!details.tag.size())
 159         return new NullDelayId;
 160
 161     return new Id(this, details.tag);
 162 }
 163
 164 void *
 165 DelayTagged::Id::operator new(size_t size)
 166 {
 167     DelayPools::MemoryUsed += sizeof (Id);
 168     return ::operator new (size);
 169 }
 170
 171 void
 172 DelayTagged::Id::operator delete (void *address)
 173 {
 174     DelayPools::MemoryUsed -= sizeof (Id);
 175     ::operator delete (address);
 176 }
 177
 178 void
 179 DelayTagged::Id::deleteSelf() const
 180 {
 181     delete this;
 182 }
 183
 184 void *
 185 DelayTaggedBucket::operator new(size_t size)
 186 {
 187     DelayPools::MemoryUsed += sizeof (DelayTaggedBucket);
 188     return ::operator new (size);
 189 }
 190
 191 void
 192 DelayTaggedBucket::operator delete (void *address)
 193 {
 194     DelayPools::MemoryUsed -= sizeof (DelayTaggedBucket);
 195     ::operator delete (address);
 196 }
 197
 198 DelayTaggedBucket::DelayTaggedBucket(String &aTag) : tag (aTag)
 199 {
 200     debug (77,3) ("DelayTaggedBucket::DelayTaggedBucket\n");
 201 }
 202
 203 DelayTaggedBucket::~DelayTaggedBucket()
 204 {
 205     debug (77,3) ("DelayTaggedBucket::~DelayTaggedBucket\n");
 206 }
 207
 208 void
 209 DelayTaggedBucket::stats (StoreEntry *entry) const
 210 {
 211     storeAppendPrintf(entry, " %s:", tag.buf());
 212     theBucket.stats (entry);
 213 }
 214
 215 DelayTagged::Id::Id(DelayTagged::Pointer aDelayTagged, String &aTag) : theTagged(aDelayTagged)
 216 {
 217     theBucket = new DelayTaggedBucket(aTag);
 218     DelayTaggedBucket::Pointer const *existing = theTagged->buckets.find(theBucket, DelayTaggedCmp);
 219
 220     if (existing) {
 221         theBucket = *existing;
 222         return;
 223     }
 224
 225     theBucket->theBucket.init(theTagged->spec);
 226     theTagged->buckets.head = theTagged->buckets.head->insert (theBucket, DelayTaggedCmp);
 227 }
 228
 229 DelayTagged::Id::~Id()
 230 {
 231     debug (77,3) ("DelayTagged::Id::~Id\n");
 232 }
 233
 234 int
 235 DelayTagged::Id::bytesWanted (int min, int max) const
 236 {
 237     return theBucket->theBucket.bytesWanted(min,max);
 238 }
 239
 240 void
 241 DelayTagged::Id::bytesIn(int qty)
 242 {
 243     theBucket->theBucket.bytesIn(qty);
 244 }
 245
 246 void
 247 DelayTagged::Id::delayRead(DeferredRead const &aRead)
 248 {
 249     theTagged->delayRead(aRead);
 250 }
 251
 252 #endif