Bytecode generation, Source code mappings, JCov, Future
alex at retroduction.org
Tue Apr 22 04:04:43 PDT 2008
On 22.04.2008, at 00:16, Robert Field wrote:
> I ported JCov to java.lang.instrument (a fully Java API) not to JVM
> TI (a native API). And it is now in active use internal to Sun.
> There were plans to make it open source, but I haven't heard
> anything about this being done -- though I don't track the project
> I terms of character position, this is something that has been
> actively requested for years -- it would need to be implemented by
> javac. This is needed for tools like debuggers, profilers,
> coverage analysis, etc. But it such an interface has not been
> formally defined. javac does have or did have an unofficial mode
> for generating character position info (for JCov, as you mention),
> but I am not familiar with it or its status. Compiler folk...
Thanks for clarification ! That underlines my impression that the
character position related stuff embedded in the existing "JCov"
implementation is *not* superseded by any JVMTI (or as you said
java.lang.instrument) port and that getting character positions for
post-compilation tools is a useful feature.
My patch sent to compiler-dev at openjdk.java.net yesterday provides a
basic interface for making character positions in a simple format
accessible to "user-space".
> Uday Dhanikonda wrote:
>> There was an effort by Robert recently to rewrite JCov using JVM TI.
>> Robert can you comment on this.
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