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This is an automatically generated e-mail. To reply, visit:
<a href="http://git.reviewboard.kde.org/r/102238/">http://git.reviewboard.kde.org/r/102238/</a>
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<div>Review request for kdelibs, David Faure and Thiago Macieira.</div>
<div>By Dawit Alemayehu.</div>
<p style="color: grey;"><i>Updated Aug. 17, 2011, 5:40 a.m.</i></p>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Changes</h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">- Modified the last patch so that the lookup thread is recycled and reused instead of being discarded.
- Moved the timeout based name lookup code into an overloaded function in HostInfoAgentPrivate.
- Changed keywords "signals" -> "Q_SIGNALS" and "slots" -> "Q_SLOTS".
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description (updated)</h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">The attached patch is an alternate approach to address the issue of crashes that arise from terminating an active thread than the one proposed at https://git.reviewboard.kde.org/r/102179/. With this patch the function "QHostInfo::lookupHost(QString, int)" avoids the use of QThread::terminate with the following fairly simple changes:
- Connect its finished signal to its parent deleteLater slot in the ctor so that the thread is automatically deleted later.
- Store the looked up DNS info in the global cache to avoid unnecessary queries for the same request.
- Check for cached DNS information and avoid doing reverse look ups before resorting to performing DNS queries in a separate thread.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing (updated)</h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Tested with the following code based on Albert's post.
#include "hostinfo_p.h"
#include <QtGui/QApplication>
#include <QtCore/QElapsedTimer>
#include <QtNetwork/QHostInfo>
int main(int a, char **b)
{
QApplication app(a, b);
QElapsedTimer t;
t.start();
qDebug() << KIO::HostInfo::lookupHost("www.kde.org", 0).addresses();
qDebug() << "Time:" << t.elapsed() << "ms";
}
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> (updated)</h1>
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<li>kio/kio/hostinfo.cpp <span style="color: grey">(344b1d8)</span></li>
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<p><a href="http://git.reviewboard.kde.org/r/102238/diff/" style="margin-left: 3em;">View Diff</a></p>
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