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<body class='hmmessage'><div dir='ltr'>Yes, I was looking for these methods. Thanks a lot for all of you.<br><br>I did some more digging and found out that The type of generation in Serial GC is TenuredGeneration. Now, <b>TenuredGeneration::collect () </b>calls <b>OneContigSpaceCardGeneration::collect ()</b>. But in <b>OneContigSpaceCardGeneration::collect ()</b> I couldn't see any code related to collect or relevant to collect. Please tell me if collection is happening somewhere else or here? If somewhere else then where?<br> <br>I can see that <b>TenuredGeneration::collect ()</b> is called from <b>_gens[i]->collect(full, do_clear_all_soft_refs, size, is_tlab); </b>in <b>GenCollectedHeap::do_collection ()</b> function in file genCollectedHeap.cpp.<br><br>Thank You,<br><br>Abhinav<br><div><hr id="stopSpelling">Date: Mon, 27 Jul 2015 11:28:46 -0700<br>From: jon.masamitsu@oracle.com<br>To: hotspot-gc-dev@openjdk.java.net<br>Subject: Re: Entry function of GC Collection<br><br>
You're perhaps looking for the collect() methods.<br>
<br>
For example,<br>
<br>
void TenuredGeneration::collect()<br>
<br>
and<br>
<br>
void DefNewGeneration::collect()<br>
<br>
Jon<br>
<br>
<div class="ecxmoz-cite-prefix">On 07/25/2015 01:30 PM, Abhinav Jangda
wrote:<br>
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<div dir="ltr">Hello all,<br>
<br>
I have been working on a project which requires me to change GC
Algorithm in Java Hotspot VM. I have been trying to understand
the source code of GC in Hotspot VM. I know a couple of details
about GC in Hotspot now. But I am not able to find the start
function of GC Collection. I think <i>VM_GenCollectFull::doit</i>
and <i>VM_GenCollectForAllocation::doit() </i>are the two
functions called for GC. But if I add <i>std::cout</i>
statements at the start of these functions and start the Dacapo
Benchmarks I couldn't see any result produced by <i>std::cout</i>
statements. I want to work with SerialGC.<br>
Here is the command I used to run Hotspot:<br>
<br>
./java -XX:+UseSerialGC -jar dacapo.jar jython<br>
<br>
OpenJDK version is 8 and I am compiling building openjdk using
following command<br>
<br>
make CONF=linux-x86_64-normal-server-release<br>
<br>
It will be great if anyone of you could help me.<br>
<br>
Thank You,<br>
Abhinav<br>
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