8003562: Provide a command-line tool to find static dependencies (original) (raw)

Ulf Zibis Ulf.Zibis at CoSoCo.de
Wed Dec 5 21:58:37 UTC 2012

Yeah, this is a great tool.

Does it also help to find the need to recompile a class if the source of a inlined referred static final constant has changed?

-Ulf

Am 28.11.2012 00:18, schrieb Mandy Chung:

As part of prepare for modules [1], this RFE is to provide a command-line tool in JDK8 so that developers can understand the static dependencies of their applications and libraries.As part of Project Jigsaw, a useful class analyzer [2] was developed that makes it very easy to identify the dependencies based on the classfile library thathas also been enhanced to support dependency analysis [3].

Inspired by the sample tool that Jon Gibbons developed, we propose this new command-line name as "jdeps". $ ./bin/jdeps -h Usage: jdeps <files....> where possible options include: -version Version information -classpath Specify where to find class files -v --verbose Print class-level dependencies -r --reverse Invert the dependencies in the output -p Restrict analysis to classes in this package (may be given multiple times) -e --regex Restrict analysis to packages matching pattern (-p and -e are exclusive) -P --profile Show profile or the file containing a package -d --depth Specify the depth of the transitive dependency analysis Default depth is 1. Set depth to 0 to traverse all dependencies. -all Show all classes and members with no breakdown The jdeps tool shows package-level dependencies of the input files that can be .class files, a directory, or a JAR file. Specify the depth for the transitive dependency analysis; otherwise, it only analyzes the input files. jdeps -P option will show where the class/package comes from. For Java SE API, it will show the Profile name (I implement a workaround for now until the profile work is in jdk8). For JDK internal APIs, they will not be exported in modular world. jdeps will indicate any usage of the JDK internal APIs in the output to help developers prepare for transitioning to modules. See below for a few sample output. Webrev at: http://cr.openjdk.java.net/~mchung/jdk8/webrevs/8003562/ The implementation classes for jdeps are in the langtools repo along with the com.sun.tools.classfile library. I'm working on adding more unit tests. I'd like to get this webrev out to begin the discussion and get review feedback. Thanks Mandy [1] http://openjdk.java.net/jeps/162 [2] http://hg.openjdk.java.net/jigsaw/jigsaw/jdk/raw-file/543b0d24a920/make/tools/classanalyzer/classanalyzer.html [3] http://bugs.sun.com/viewbug.do?bugid=6907575 Sample Output $./bin/jdeps demo/jfc/Notepad/Notepad.jar (demo/jfc/Notepad/Notepad.jar) -> java.awt -> java.awt.event -> java.beans -> java.io -> java.lang -> java.net -> java.util -> java.util.logging -> javax.swing -> javax.swing.border -> javax.swing.event -> javax.swing.text -> javax.swing.tree -> javax.swing.undo $ ./bin/jdeps -P demo/jfc/Notepad/Notepad.jar (demo/jfc/Notepad/Notepad.jar) -> java.awt compact4 -> java.awt.event compact4 -> java.beans compact4 -> java.io compact1 -> java.lang compact1 -> java.net compact1 -> java.util compact1 -> java.util.logging compact1 -> javax.swing compact4 -> javax.swing.border compact4 -> javax.swing.event compact4 -> javax.swing.text compact4 -> javax.swing.tree compact4 -> javax.swing.undo compact4 $ ./bin/jdeps -d 10 demo/jfc/Notepad/Notepad.jar (demo/jfc/Notepad/Notepad.jar) -> java.awt -> java.awt.event -> java.beans -> java.io -> java.lang -> java.net -> java.util -> java.util.logging -> javax.swing -> javax.swing.border -> javax.swing.event -> javax.swing.text -> javax.swing.tree -> javax.swing.undo java.security (/export/mchung/ws/jdeps-repo/build/macosx-x8664/j2sdk-image/jre/lib/rt.jar) -> javax.crypto javax.crypto (/export/mchung/ws/jdeps-repo/build/macosx-x8664/j2sdk-image/jre/lib/jce.jar) -> java.io -> java.lang -> java.lang.reflect -> java.net -> java.nio -> java.security -> java.security.cert -> java.security.spec -> java.util -> java.util.concurrent -> java.util.jar -> java.util.regex -> java.util.zip -> sun.security.jca JDK internal API -> sun.security.util JDK internal API javax.crypto.spec (/export/mchung/ws/jdeps-repo/build/macosx-x8664/j2sdk-image/jre/lib/jce.jar) -> java.lang -> java.security.spec -> java.util

More information about the core-libs-dev mailing list