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<div class="title">khtml_pagecache.cpp</div> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* This file is part of the KDE project</span>
<a name="l00002"></a>00002 <span class="comment"> *</span>
<a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 2000 Waldo Bastian <bastian@kde.org></span>
<a name="l00004"></a>00004 <span class="comment"> *</span>
<a name="l00005"></a>00005 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
<a name="l00006"></a>00006 <span class="comment"> * modify it under the terms of the GNU Library General Public</span>
<a name="l00007"></a>00007 <span class="comment"> * License as published by the Free Software Foundation; either</span>
<a name="l00008"></a>00008 <span class="comment"> * version 2 of the License, or (at your option) any later version.</span>
<a name="l00009"></a>00009 <span class="comment"> *</span>
<a name="l00010"></a>00010 <span class="comment"> * This library is distributed in the hope that it will be useful,</span>
<a name="l00011"></a>00011 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00012"></a>00012 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00013"></a>00013 <span class="comment"> * Library General Public License for more details.</span>
<a name="l00014"></a>00014 <span class="comment"> *</span>
<a name="l00015"></a>00015 <span class="comment"> * You should have received a copy of the GNU Library General Public License</span>
<a name="l00016"></a>00016 <span class="comment"> * along with this library; see the file COPYING.LIB. If not, write to</span>
<a name="l00017"></a>00017 <span class="comment"> * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,</span>
<a name="l00018"></a>00018 <span class="comment"> * Boston, MA 02110-1301, USA.</span>
<a name="l00019"></a>00019 <span class="comment"> */</span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="preprocessor">#include "khtml_pagecache.h"</span>
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="preprocessor">#include <kstaticdeleter.h></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <ktempfile.h></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <kstandarddirs.h></span>
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="preprocessor">#include <qintdict.h></span>
<a name="l00028"></a>00028 <span class="preprocessor">#include <qtimer.h></span>
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="preprocessor">#include <sys/types.h></span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <unistd.h></span>
<a name="l00032"></a>00032 <span class="preprocessor">#include <assert.h></span>
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="comment">// We keep 12 pages in memory.</span>
<a name="l00035"></a>00035 <span class="preprocessor">#ifndef KHTML_PAGE_CACHE_SIZE</span>
<a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#define KHTML_PAGE_CACHE_SIZE 12</span>
<a name="l00037"></a>00037 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span>
<a name="l00039"></a>00039 <span class="keyword">template</span> <span class="keyword">class </span><a class="codeRef" href="qptrlist.html">QPtrList<KHTMLPageCacheDelivery></a>;
<a name="l00040"></a>00040 <span class="keyword">class </span>KHTMLPageCacheEntry
<a name="l00041"></a>00041 {
<a name="l00042"></a>00042 <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="classKHTMLPageCache.html" title="Singleton Object that handles a binary cache on top of the http cache management of kio...">KHTMLPageCache</a>;
<a name="l00043"></a>00043 <span class="keyword">public</span>:
<a name="l00044"></a>00044 KHTMLPageCacheEntry(<span class="keywordtype">long</span> <span class="keywordtype">id</span>);
<a name="l00045"></a>00045
<a name="l00046"></a>00046 ~KHTMLPageCacheEntry();
<a name="l00047"></a>00047
<a name="l00048"></a>00048 <span class="keywordtype">void</span> addData(<span class="keyword">const</span> <a class="codeRef" href="qbytearray.html">QByteArray</a> &data);
<a name="l00049"></a>00049
<a name="l00050"></a>00050 <span class="keywordtype">void</span> endData();
<a name="l00051"></a>00051
<a name="l00052"></a>00052 <span class="keywordtype">bool</span> isComplete()
<a name="l00053"></a>00053 { <span class="keywordflow">return</span> m_complete; }
<a name="l00054"></a>00054
<a name="l00055"></a>00055 KHTMLPageCacheDelivery *fetchData(<a class="codeRef" href="qobject.html">QObject</a> *recvObj, <span class="keyword">const</span> <span class="keywordtype">char</span> *recvSlot);
<a name="l00056"></a>00056 <span class="keyword">private</span>:
<a name="l00057"></a>00057 <span class="keywordtype">long</span> m_id;
<a name="l00058"></a>00058 <span class="keywordtype">bool</span> m_complete;
<a name="l00059"></a>00059 <a class="codeRef" href="qvaluelist.html">QValueList<QByteArray></a> m_data;
<a name="l00060"></a>00060 <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/classKTempFile.html">KTempFile</a> *m_file;
<a name="l00061"></a>00061 };
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="keyword">class </span>KHTMLPageCachePrivate
<a name="l00064"></a>00064 {
<a name="l00065"></a>00065 <span class="keyword">public</span>:
<a name="l00066"></a>00066 <span class="keywordtype">long</span> newId;
<a name="l00067"></a>00067 <a class="codeRef" href="qintdict.html">QIntDict<KHTMLPageCacheEntry></a> dict;
<a name="l00068"></a>00068 <a class="codeRef" href="qptrlist.html">QPtrList<KHTMLPageCacheDelivery></a> delivery;
<a name="l00069"></a>00069 <a class="codeRef" href="qptrlist.html">QPtrList<KHTMLPageCacheEntry></a> expireQueue;
<a name="l00070"></a>00070 <span class="keywordtype">bool</span> deliveryActive;
<a name="l00071"></a>00071 };
<a name="l00072"></a>00072
<a name="l00073"></a>00073 KHTMLPageCacheEntry::KHTMLPageCacheEntry(<span class="keywordtype">long</span> <span class="keywordtype">id</span>) : m_id(id), m_complete(false)
<a name="l00074"></a>00074 {
<a name="l00075"></a>00075 <a class="codeRef" href="qstring.html">QString</a> path = <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/group__locates.html#gaa61f4722cb5eb55a0661b5aec0bbb3fe">locateLocal</a>(<span class="stringliteral">"tmp"</span>, <span class="stringliteral">"khtmlcache"</span>);
<a name="l00076"></a>00076 m_file = <span class="keyword">new</span> <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/classKTempFile.html">KTempFile</a>(path);
<a name="l00077"></a>00077 m_file->unlink();
<a name="l00078"></a>00078 }
<a name="l00079"></a>00079
<a name="l00080"></a>00080 KHTMLPageCacheEntry::~KHTMLPageCacheEntry()
<a name="l00081"></a>00081 {
<a name="l00082"></a>00082 <span class="keyword">delete</span> m_file;
<a name="l00083"></a>00083 }
<a name="l00084"></a>00084
<a name="l00085"></a>00085
<a name="l00086"></a>00086 <span class="keywordtype">void</span>
<a name="l00087"></a>00087 KHTMLPageCacheEntry::addData(<span class="keyword">const</span> <a class="codeRef" href="qbytearray.html">QByteArray</a> &data)
<a name="l00088"></a>00088 {
<a name="l00089"></a>00089 <span class="keywordflow">if</span> (m_file->status() == 0)
<a name="l00090"></a>00090 m_file->dataStream()->writeRawBytes(data.data(), data.size());
<a name="l00091"></a>00091 }
<a name="l00092"></a>00092
<a name="l00093"></a>00093 <span class="keywordtype">void</span>
<a name="l00094"></a>00094 KHTMLPageCacheEntry::endData()
<a name="l00095"></a>00095 {
<a name="l00096"></a>00096 m_complete = <span class="keyword">true</span>;
<a name="l00097"></a>00097 <span class="keywordflow">if</span> ( m_file->status() == 0) {
<a name="l00098"></a>00098 m_file->dataStream()->device()->flush();
<a name="l00099"></a>00099 m_file->dataStream()->device()->at(0);
<a name="l00100"></a>00100 }
<a name="l00101"></a>00101 }
<a name="l00102"></a>00102
<a name="l00103"></a>00103
<a name="l00104"></a>00104 KHTMLPageCacheDelivery *
<a name="l00105"></a>00105 KHTMLPageCacheEntry::fetchData(<a class="codeRef" href="qobject.html">QObject</a> *recvObj, <span class="keyword">const</span> <span class="keywordtype">char</span> *recvSlot)
<a name="l00106"></a>00106 {
<a name="l00107"></a>00107 <span class="comment">// Duplicate fd so that entry can be safely deleted while delivering the data.</span>
<a name="l00108"></a>00108 <span class="keywordtype">int</span> fd = dup(m_file->handle());
<a name="l00109"></a>00109 lseek(fd, 0, SEEK_SET);
<a name="l00110"></a>00110 KHTMLPageCacheDelivery *delivery = <span class="keyword">new</span> KHTMLPageCacheDelivery(fd);
<a name="l00111"></a>00111 recvObj-><a class="codeRef" href="qobject.html#connect">connect</a>(delivery, SIGNAL(emitData(<span class="keyword">const</span> <a class="codeRef" href="qbytearray.html">QByteArray</a>&)), recvSlot);
<a name="l00112"></a>00112 delivery->recvObj = recvObj;
<a name="l00113"></a>00113 <span class="keywordflow">return</span> delivery;
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115
<a name="l00116"></a>00116 <span class="keyword">static</span> <a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/classKStaticDeleter.html">KStaticDeleter<KHTMLPageCache></a> pageCacheDeleter;
<a name="l00117"></a>00117
<a name="l00118"></a>00118 <a class="code" href="classKHTMLPageCache.html" title="Singleton Object that handles a binary cache on top of the http cache management of kio...">KHTMLPageCache</a> *KHTMLPageCache::_self = 0;
<a name="l00119"></a>00119
<a name="l00120"></a>00120 <a class="code" href="classKHTMLPageCache.html" title="Singleton Object that handles a binary cache on top of the http cache management of kio...">KHTMLPageCache</a> *
<a name="l00121"></a><a class="code" href="classKHTMLPageCache.html#a56d8d2786238fd6075d7e779aabdd7ff">00121</a> <a class="code" href="classKHTMLPageCache.html#a56d8d2786238fd6075d7e779aabdd7ff" title="static "constructor".">KHTMLPageCache::self</a>()
<a name="l00122"></a>00122 {
<a name="l00123"></a>00123 <span class="keywordflow">if</span> (!_self)
<a name="l00124"></a>00124 _self = pageCacheDeleter.<a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/classKStaticDeleter.html#a55e1927b4df3dea163903d06a863dd9a">setObject</a>(_self, <span class="keyword">new</span> <a class="code" href="classKHTMLPageCache.html" title="Singleton Object that handles a binary cache on top of the http cache management of kio...">KHTMLPageCache</a>);
<a name="l00125"></a>00125 <span class="keywordflow">return</span> _self;
<a name="l00126"></a>00126 }
<a name="l00127"></a>00127
<a name="l00128"></a>00128 KHTMLPageCache::KHTMLPageCache()
<a name="l00129"></a>00129 {
<a name="l00130"></a>00130 d = <span class="keyword">new</span> KHTMLPageCachePrivate;
<a name="l00131"></a>00131 d->newId = 1;
<a name="l00132"></a>00132 d->deliveryActive = <span class="keyword">false</span>;
<a name="l00133"></a>00133 }
<a name="l00134"></a>00134
<a name="l00135"></a>00135 KHTMLPageCache::~KHTMLPageCache()
<a name="l00136"></a>00136 {
<a name="l00137"></a>00137 d->delivery.setAutoDelete(<span class="keyword">true</span>);
<a name="l00138"></a>00138 d->dict.setAutoDelete(<span class="keyword">true</span>);
<a name="l00139"></a>00139 <span class="keyword">delete</span> d;
<a name="l00140"></a>00140 }
<a name="l00141"></a>00141
<a name="l00142"></a>00142 <span class="keywordtype">long</span>
<a name="l00143"></a><a class="code" href="classKHTMLPageCache.html#a5715c5d447aa2862b6ef27eacc4f060d">00143</a> <a class="code" href="classKHTMLPageCache.html#a5715c5d447aa2862b6ef27eacc4f060d" title="Create a new cache entry.">KHTMLPageCache::createCacheEntry</a>()
<a name="l00144"></a>00144 {
<a name="l00145"></a>00145 KHTMLPageCacheEntry *entry = <span class="keyword">new</span> KHTMLPageCacheEntry(d->newId);
<a name="l00146"></a>00146 d->dict.insert(d->newId, entry);
<a name="l00147"></a>00147 d->expireQueue.append(entry);
<a name="l00148"></a>00148 <span class="keywordflow">if</span> (d->expireQueue.count() > KHTML_PAGE_CACHE_SIZE)
<a name="l00149"></a>00149 {
<a name="l00150"></a>00150 KHTMLPageCacheEntry *entry = d->expireQueue.take(0);
<a name="l00151"></a>00151 d->dict.remove(entry->m_id);
<a name="l00152"></a>00152 <span class="keyword">delete</span> entry;
<a name="l00153"></a>00153 }
<a name="l00154"></a>00154 <span class="keywordflow">return</span> (d->newId++);
<a name="l00155"></a>00155 }
<a name="l00156"></a>00156
<a name="l00157"></a>00157 <span class="keywordtype">void</span>
<a name="l00158"></a><a class="code" href="classKHTMLPageCache.html#a4fffeebc45b6c3d60d6950e5abfa7d81">00158</a> <a class="code" href="classKHTMLPageCache.html#a4fffeebc45b6c3d60d6950e5abfa7d81" title="Add data to the cache entry with id id.">KHTMLPageCache::addData</a>(<span class="keywordtype">long</span> <span class="keywordtype">id</span>, <span class="keyword">const</span> <a class="codeRef" href="qbytearray.html">QByteArray</a> &data)
<a name="l00159"></a>00159 {
<a name="l00160"></a>00160 KHTMLPageCacheEntry *entry = d->dict.find(<span class="keywordtype">id</span>);
<a name="l00161"></a>00161 <span class="keywordflow">if</span> (entry)
<a name="l00162"></a>00162 entry->addData(data);
<a name="l00163"></a>00163 }
<a name="l00164"></a>00164
<a name="l00165"></a>00165 <span class="keywordtype">void</span>
<a name="l00166"></a><a class="code" href="classKHTMLPageCache.html#a2606e367da933f47b26884f740fb5845">00166</a> <a class="code" href="classKHTMLPageCache.html#a2606e367da933f47b26884f740fb5845" title="Signal end of data for the cache entry with id id.">KHTMLPageCache::endData</a>(<span class="keywordtype">long</span> <span class="keywordtype">id</span>)
<a name="l00167"></a>00167 {
<a name="l00168"></a>00168 KHTMLPageCacheEntry *entry = d->dict.find(<span class="keywordtype">id</span>);
<a name="l00169"></a>00169 <span class="keywordflow">if</span> (entry)
<a name="l00170"></a>00170 entry->endData();
<a name="l00171"></a>00171 }
<a name="l00172"></a>00172
<a name="l00173"></a>00173 <span class="keywordtype">void</span>
<a name="l00174"></a><a class="code" href="classKHTMLPageCache.html#a5cf1d36f2b04c094b6c833d9e7169302">00174</a> <a class="code" href="classKHTMLPageCache.html#a5cf1d36f2b04c094b6c833d9e7169302" title="Cancel the entry.">KHTMLPageCache::cancelEntry</a>(<span class="keywordtype">long</span> <span class="keywordtype">id</span>)
<a name="l00175"></a>00175 {
<a name="l00176"></a>00176 KHTMLPageCacheEntry *entry = d->dict.take(<span class="keywordtype">id</span>);
<a name="l00177"></a>00177 <span class="keywordflow">if</span> (entry)
<a name="l00178"></a>00178 {
<a name="l00179"></a>00179 d->expireQueue.removeRef(entry);
<a name="l00180"></a>00180 <span class="keyword">delete</span> entry;
<a name="l00181"></a>00181 }
<a name="l00182"></a>00182 }
<a name="l00183"></a>00183
<a name="l00184"></a>00184 <span class="keywordtype">bool</span>
<a name="l00185"></a><a class="code" href="classKHTMLPageCache.html#a912d0fd28d98ff0858b2cbb0f0e284d6">00185</a> <a class="code" href="classKHTMLPageCache.html#a912d0fd28d98ff0858b2cbb0f0e284d6">KHTMLPageCache::isValid</a>(<span class="keywordtype">long</span> <span class="keywordtype">id</span>)
<a name="l00186"></a>00186 {
<a name="l00187"></a>00187 <span class="keywordflow">return</span> (d->dict.find(<span class="keywordtype">id</span>) != 0);
<a name="l00188"></a>00188 }
<a name="l00189"></a>00189
<a name="l00190"></a>00190 <span class="keywordtype">bool</span>
<a name="l00191"></a><a class="code" href="classKHTMLPageCache.html#a8265e43ab9a23b137b9085ab041c3bbc">00191</a> <a class="code" href="classKHTMLPageCache.html#a8265e43ab9a23b137b9085ab041c3bbc">KHTMLPageCache::isComplete</a>(<span class="keywordtype">long</span> <span class="keywordtype">id</span>)
<a name="l00192"></a>00192 {
<a name="l00193"></a>00193 KHTMLPageCacheEntry *entry = d->dict.find(<span class="keywordtype">id</span>);
<a name="l00194"></a>00194 <span class="keywordflow">if</span> (entry)
<a name="l00195"></a>00195 <span class="keywordflow">return</span> entry->isComplete();
<a name="l00196"></a>00196 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00197"></a>00197 }
<a name="l00198"></a>00198
<a name="l00199"></a>00199 <span class="keywordtype">void</span>
<a name="l00200"></a><a class="code" href="classKHTMLPageCache.html#a17449856ef0b4ae15e076aabf3b62bbe">00200</a> <a class="code" href="classKHTMLPageCache.html#a17449856ef0b4ae15e076aabf3b62bbe" title="Fetch data for cache entry id and send it to slot recvSlot in the object recvObj.">KHTMLPageCache::fetchData</a>(<span class="keywordtype">long</span> <span class="keywordtype">id</span>, <a class="codeRef" href="qobject.html">QObject</a> *recvObj, <span class="keyword">const</span> <span class="keywordtype">char</span> *recvSlot)
<a name="l00201"></a>00201 {
<a name="l00202"></a>00202 KHTMLPageCacheEntry *entry = d->dict.find(<span class="keywordtype">id</span>);
<a name="l00203"></a>00203 <span class="keywordflow">if</span> (!entry || !entry->isComplete()) <span class="keywordflow">return</span>;
<a name="l00204"></a>00204
<a name="l00205"></a>00205 <span class="comment">// Make this entry the most recent entry.</span>
<a name="l00206"></a>00206 d->expireQueue.removeRef(entry);
<a name="l00207"></a>00207 d->expireQueue.append(entry);
<a name="l00208"></a>00208
<a name="l00209"></a>00209 d->delivery.append( entry->fetchData(recvObj, recvSlot) );
<a name="l00210"></a>00210 <span class="keywordflow">if</span> (!d->deliveryActive)
<a name="l00211"></a>00211 {
<a name="l00212"></a>00212 d->deliveryActive = <span class="keyword">true</span>;
<a name="l00213"></a>00213 <a class="codeRef" href="qtimer.html#singleShot">QTimer::singleShot</a>(20, <span class="keyword">this</span>, SLOT(sendData()));
<a name="l00214"></a>00214 }
<a name="l00215"></a>00215 }
<a name="l00216"></a>00216
<a name="l00217"></a>00217 <span class="keywordtype">void</span>
<a name="l00218"></a><a class="code" href="classKHTMLPageCache.html#aa54c21d252edb97b9c0ce9d2d9f2bb8d">00218</a> <a class="code" href="classKHTMLPageCache.html#aa54c21d252edb97b9c0ce9d2d9f2bb8d" title="Cancel sending data to recvObj.">KHTMLPageCache::cancelFetch</a>(<a class="codeRef" href="qobject.html">QObject</a> *recvObj)
<a name="l00219"></a>00219 {
<a name="l00220"></a>00220 KHTMLPageCacheDelivery *next;
<a name="l00221"></a>00221 <span class="keywordflow">for</span>(KHTMLPageCacheDelivery* delivery = d->delivery.first();
<a name="l00222"></a>00222 delivery;
<a name="l00223"></a>00223 delivery = next)
<a name="l00224"></a>00224 {
<a name="l00225"></a>00225 next = d->delivery.next();
<a name="l00226"></a>00226 <span class="keywordflow">if</span> (delivery->recvObj == recvObj)
<a name="l00227"></a>00227 {
<a name="l00228"></a>00228 d->delivery.removeRef(delivery);
<a name="l00229"></a>00229 <span class="keyword">delete</span> delivery;
<a name="l00230"></a>00230 }
<a name="l00231"></a>00231 }
<a name="l00232"></a>00232 }
<a name="l00233"></a>00233
<a name="l00234"></a>00234 <span class="keywordtype">void</span>
<a name="l00235"></a>00235 KHTMLPageCache::sendData()
<a name="l00236"></a>00236 {
<a name="l00237"></a>00237 <span class="keywordflow">if</span> (d->delivery.isEmpty())
<a name="l00238"></a>00238 {
<a name="l00239"></a>00239 d->deliveryActive = <span class="keyword">false</span>;
<a name="l00240"></a>00240 <span class="keywordflow">return</span>;
<a name="l00241"></a>00241 }
<a name="l00242"></a>00242 KHTMLPageCacheDelivery *delivery = d->delivery.take(0);
<a name="l00243"></a>00243 assert(delivery);
<a name="l00244"></a>00244
<a name="l00245"></a>00245 <span class="keywordtype">char</span> buf[8192];
<a name="l00246"></a>00246 <a class="codeRef" href="qbytearray.html">QByteArray</a> byteArray;
<a name="l00247"></a>00247
<a name="l00248"></a>00248 <span class="keywordtype">int</span> n = read(delivery->fd, buf, 8192);
<a name="l00249"></a>00249
<a name="l00250"></a>00250 <span class="keywordflow">if</span> ((n < 0) && (errno == EINTR))
<a name="l00251"></a>00251 {
<a name="l00252"></a>00252 <span class="comment">// try again later</span>
<a name="l00253"></a>00253 d->delivery.append( delivery );
<a name="l00254"></a>00254 }
<a name="l00255"></a>00255 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (n <= 0)
<a name="l00256"></a>00256 {
<a name="l00257"></a>00257 <span class="comment">// done.</span>
<a name="l00258"></a>00258 delivery->emitData(byteArray); <span class="comment">// Empty array</span>
<a name="l00259"></a>00259 <span class="keyword">delete</span> delivery;
<a name="l00260"></a>00260 }
<a name="l00261"></a>00261 <span class="keywordflow">else</span>
<a name="l00262"></a>00262 {
<a name="l00263"></a>00263 byteArray.setRawData(buf, n);
<a name="l00264"></a>00264 delivery->emitData(byteArray);
<a name="l00265"></a>00265 byteArray.resetRawData(buf, n);
<a name="l00266"></a>00266 d->delivery.append( delivery );
<a name="l00267"></a>00267 }
<a name="l00268"></a>00268 <a class="codeRef" href="qtimer.html#singleShot">QTimer::singleShot</a>(0, <span class="keyword">this</span>, SLOT(sendData()));
<a name="l00269"></a>00269 }
<a name="l00270"></a>00270
<a name="l00271"></a>00271 <span class="keywordtype">void</span>
<a name="l00272"></a><a class="code" href="classKHTMLPageCache.html#a0ddcdf99ce5ae5827888f874324c1970">00272</a> <a class="code" href="classKHTMLPageCache.html#a0ddcdf99ce5ae5827888f874324c1970" title="Save the data of cache entry id to the datastream str.">KHTMLPageCache::saveData</a>(<span class="keywordtype">long</span> <span class="keywordtype">id</span>, <a class="codeRef" href="qdatastream.html">QDataStream</a> *str)
<a name="l00273"></a>00273 {
<a name="l00274"></a>00274 KHTMLPageCacheEntry *entry = d->dict.find(<span class="keywordtype">id</span>);
<a name="l00275"></a>00275 assert(entry);
<a name="l00276"></a>00276
<a name="l00277"></a>00277 <span class="keywordtype">int</span> fd = entry->m_file->handle();
<a name="l00278"></a>00278 <span class="keywordflow">if</span> ( fd < 0 ) <span class="keywordflow">return</span>;
<a name="l00279"></a>00279
<a name="l00280"></a>00280 off_t pos = lseek(fd, 0, SEEK_CUR);
<a name="l00281"></a>00281 lseek(fd, 0, SEEK_SET);
<a name="l00282"></a>00282
<a name="l00283"></a>00283 <span class="keywordtype">char</span> buf[8192];
<a name="l00284"></a>00284
<a name="l00285"></a>00285 <span class="keywordflow">while</span>(<span class="keyword">true</span>)
<a name="l00286"></a>00286 {
<a name="l00287"></a>00287 <span class="keywordtype">int</span> n = read(fd, buf, 8192);
<a name="l00288"></a>00288 <span class="keywordflow">if</span> ((n < 0) && (errno == EINTR))
<a name="l00289"></a>00289 {
<a name="l00290"></a>00290 <span class="comment">// try again</span>
<a name="l00291"></a>00291 <span class="keywordflow">continue</span>;
<a name="l00292"></a>00292 }
<a name="l00293"></a>00293 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (n <= 0)
<a name="l00294"></a>00294 {
<a name="l00295"></a>00295 <span class="comment">// done.</span>
<a name="l00296"></a>00296 <span class="keywordflow">break</span>;
<a name="l00297"></a>00297 }
<a name="l00298"></a>00298 <span class="keywordflow">else</span>
<a name="l00299"></a>00299 {
<a name="l00300"></a>00300 str-><a class="codeRef" href="qdatastream.html#writeRawBytes">writeRawBytes</a>(buf, n);
<a name="l00301"></a>00301 }
<a name="l00302"></a>00302 }
<a name="l00303"></a>00303
<a name="l00304"></a>00304 <span class="keywordflow">if</span> (pos != (off_t)-1)
<a name="l00305"></a>00305 lseek(fd, pos, SEEK_SET);
<a name="l00306"></a>00306 }
<a name="l00307"></a>00307
<a name="l00308"></a>00308 KHTMLPageCacheDelivery::~KHTMLPageCacheDelivery()
<a name="l00309"></a>00309 {
<a name="l00310"></a>00310 close(fd);
<a name="l00311"></a>00311 }
<a name="l00312"></a>00312
<a name="l00313"></a>00313 <span class="preprocessor">#include "khtml_pagecache.moc"</span>
</pre></div></div>
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