chriswhocodes / jitwatch Goto Github PK

Unify the two build systems (assuming you want to keep Ant)

Requires refactoring source viewer as observable list of lines

This is a feature request - add a Maven (or Ant/Ivy or Gradle) build process for dependency management etc

Because there is a per compilation thread log file containing the detailed info that is merged into hotspot.log on VM exit.

Need to investigate if filenames are predictable so JITWatch can tail the compiler thread logs before they are merged back.

Needs a note that you have to set $JDK_HOME explicitly

Looks like multiple threads clashing :(

Example:

Decoding compiled method 0x009e06c8:
Code:
[Entry Point]
[Constants]
  # {method} 'ind

[Loaded sun.nio.cs.ThreadLocalCoders from C:\Program Files\Java\jre7\lib\rt.jar]

exOf' '(II)I' in 'java/lang/String'
  # this:     ecx       = 'java/lang/String'
  # parm0:    edx       = int
  # parm1:    [sp+0x20]   = int  (sp of caller)
  0x009e07e0: nop
  0x009e07e1: nop
  0x009e07e2: nop

/Users/karianna/Documents/workspace/jitwatch/build.xml:18: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable

The shell scripts should allow for this value to be set.

Sometimes the parser encounters a negative timestamp in hotspot.log. Causes the chart to move backwards in time :(

Need to investigate why this happens and how it should be handled.

Build script assumes that Java will be laid out in a particular manner:

However, ${java.home} isn't always what we think it is (http://stackoverflow.com/questions/16533256/where-does-ant-set-its-java-home-and-is-it-wrong-and-is-it-supposed-to-appen).

e.g. For Java 7 on Mac OS X, it gets interpreted to:

/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre

There is no lib/tools.jar under that structure.

You may need to prompt the user for the JDK location as an interim solution (auto detecting is possible but non-trivial).

Jump to method source opens the source file but the regex for matching the method signature is not implemented yet.

Example: java.util.Arrays
public static <T,U> T[] copyOf(U[] original, int newLength, Class<? extends T[]> newType) {