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update CHANGES.html

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Craig Dowell
2010-01-28 17:42:51 -08:00
parent adb00d72d5
commit a64b4172d1
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@@ -54,35 +54,52 @@ us a note on ns-developers mailing list. </p>
<ul>
</pre>
<li><b>Tracing Helpers</b>: The organization of helpers for both pcap and ascii
tracing has been reworked. Instead of each device and stack helper
re-implementing trace enable methods, classes have been developed to implement
user-level tracing in a consistent way; and device and stack helpers use those
classes to provide tracing functionality.<br>
tracing, in devices and protocols, has been reworked. Instead of each device
and protocol helper re-implementing trace enable methods, classes have been
developed to implement user-level tracing in a consistent way; and device and
protocol helpers use those classes to provide tracing functionality.<br>
In addition to consistent operation across all helpers, the object name service
has been integrated into the trace file naming scheme.<br>
The internet stack helper has been extensively massaged to make it easier to
manage traces originating from protocols. It used to be the case that there
was essentially no opportunity to filter tracing on interfaces, and resulting
trace file names collided with those created by devices. File names are now
disambiguated and one can enable traces on a protocol/interface basis analogously
to the node/device granularity of device-based helpers.<br>
The primary user-visible results of this change are that trace-related functions
have been changed from static functions to method calls; and a new object has
been developed to hold streams for ascii traces.<br>
New functionality is present for ascii traces. It is now possible to create
multiple ascii trace files automatically just as was possible for pcap trace
files.<br>
The implementation of the helper code has been designed also to provide
functionality to make it easier for sophisticated users to hook traces of
various kinds and write results to (file) streams.
Before:
<pre>
CsmaHelper::EnablePcapAll ();
CsmaHelper::EnablePcapAll ();
std::ofstream ascii;
ascii.open ("csma-one-subnet.tr", std::ios_base::binary | std::ios_base::out);
CsmaHelper::EnableAsciiAll (ascii);
std::ofstream ascii;
ascii.open ("csma-one-subnet.tr", std::ios_base::binary | std::ios_base::out);
CsmaHelper::EnableAsciiAll (ascii);
InternetStackHelper::EnableAsciiAll (ascii);
</pre>
After:
<pre>
CsmaHelper csmaHelper;
csmaHelper.EnablePcapAll ();
CsmaHelper csmaHelper;
InternetStackHelper stack;
csmaHelper.EnablePcapAll ();
AsciiTraceHelper ascii;
csma.EnableAsciiAll (ascii.CreateFileStream ("csma-one-subnet.tr"));
stack.EnableAsciiIpv4All (stream);
AsciiTraceHelper ascii;
csma.EnableAsciiAll (ascii.CreateFileStream ("csma-one-subnet.tr"));
</pre>
<hr>
<h1>Changes from ns-3.6 to ns-3.7</h1>