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<p class="MsoNormal"><span style="font-size:11.0pt">Dear all,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I am using Soot to analyze a Java program with lots of dependencies (thousands of jar files). The application code is in one jar file, and it is specified by the
<i>-process-dir</i> option. Other dependencies are specified by the <i>-soot-classpath</i> option.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I found that the class loading is quite slow. It takes about 70 minutes running in a high-performance machine. The time is obtained by measuring the invocation of
<i>Scene.v().loadNecessaryClasses()</i> inside the <i>Main.run()</i> method. <o:p>
</o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I looked into the code for class loading of Soot and I guess one possible reason is the worklist algorithm for class loading (in the soot/SootResolver.java) is not optimized. Moreover, after profiling the
Soot execution with the perf tool I found that the hot method during class loading is inside the libzip.so. I was wondering if anyone has any idea for optimizing this process. Or could anyone give me some advice or share some experience for optimizing the
class loading of Soot?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Thanks a lot.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Yifei<o:p></o:p></span></p>
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