jdk-24 fork (from: https://github.com/openjdk/jdk) with modifications to be used in Wildcard-Usage analysis tools
72c2cfef4f
7102445: G1: Unnecessary Resource allocations during RSet scanning Add a new per-worker thread line in the PrintGCDetails output. GC Worker Other is the difference between the elapsed time for the parallel phase of the evacuation pause and the sum of the times of the sub-phases (external root scanning, mark stack scanning, RSet updating, RSet scanning, object copying, and termination) for that worker. During RSet scanning, stack allocate DirtyCardToOopClosure objects; allocating these in a resource area was causing abnormally high GC Worker Other times while the worker thread freed ResourceArea chunks. Reviewed-by: tonyp, jwilhelm, brutisso |
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|---|---|---|
| .jcheck | ||
| corba | ||
| hotspot | ||
| jaxp | ||
| jaxws | ||
| jdk | ||
| langtools | ||
| make | ||
| test | ||
| .hgignore | ||
| .hgtags | ||
| .hgtags-top-repo | ||
| ASSEMBLY_EXCEPTION | ||
| get_source.sh | ||
| LICENSE | ||
| Makefile | ||
| README | ||
| README-builds.html | ||
| THIRD_PARTY_README | ||
README:
This file should be located at the top of the OpenJDK Mercurial root
repository. This root repository will include a "make" directory,
and a Makefile for building the entire OpenJDK.
A full OpenJDK repository set (forest) should also include the following
6 nested repositories:
"jdk", "hotspot", "langtools", "corba", "jaxws" and "jaxp".
There are also several source downloads for the jax* repositories that
will be needed.
This one root repository can be obtained with something like:
hg clone http://hg.openjdk.java.net/jdk8/jdk8 openjdk8
To make sure you have all the nested repositories, you can run the
get_source.sh script located in the same respository as this file:
cd openjdk8 && sh ./get_source.sh
People unfamiliar with Mercurial should read the first few chapters of
the Mercurial book: http://hgbook.red-bean.com/read/
See http://openjdk.java.net/ for more information about the OpenJDK.
Simple Build Instructions:
0. Get the necessary system software/packages installed on your system, see
http://hg.openjdk.java.net/jdk8/build/raw-file/tip/README-builds.html
1. If you don't have a jdk6 installed, download and install a JDK 6 from
http://java.sun.com/javase/downloads/index.jsp
Set the environment variable ALT_BOOTDIR to the location of JDK 6.
2. Check the sanity of doing a build with your current system:
make sanity
See README-builds.html if you run into problems.
3. Do a complete build of the OpenJDK:
make all
The resulting JDK image should be found in build/*/j2sdk-image
where make is GNU make 3.81 or newer, /usr/bin/make on Linux usually
is 3.81 or newer.
Complete details are available in README-builds.html.