Bug 20048

Summary:	Minimize recompilation
Product:	[Eclipse Project] JDT	Reporter:	Philippe Krief <pjkrief>
Component:	Core	Assignee:	Philipe Mulet <philippe_mulet>
Status:	RESOLVED WORKSFORME	QA Contact:
Severity:	normal
Priority:	P3	CC:	sja.eclipse
Version:	2.0
Target Milestone:	2.0 F4
Hardware:	PC
OS:	Windows 2000
Whiteboard:

Description Philippe Krief

2002-06-12 12:37:16 EDT

Hi,
I'm currently changing the core of my framework. The side effect of that is 
that each time I save my code, Eclipse recompiles all the dependencies attached 
to the project, not only the dependencies related to the current code, and I 
have a lot...
How can I get rid of that.
Thanks for your help
Philippe

Comment 1 Philipe Mulet

2002-06-13 05:40:28 EDT

Please provide us with reproduceable steps. It should only recompile dependents 
affected by a structural change (i.e. signature change, visibility change, 
hierarchy change). 

If all you are touching is a method body, it should never cause dependent 
recompilation, unless you found a bug.

Once thing to try too is to activate the incremental builder trace, by adding 
the following lines to the .options file:

# Turn on debug tracing for org.eclipse.jdt.core plugin
org.eclipse.jdt.core/debug=true
# Reports incremental builder activity : nature of build, built state reading, 
indictment process
org.eclipse.jdt.core/debug/builder=true

then launch Eclipse with -debug mode, and make sure to use a java.exe (not a 
javaw.exe) VM exe, with a big console line size.

Comment 2 Philippe Krief

2002-06-13 10:39:43 EDT

It seems that since I moved to F3, the problem is not reproductible...
Thanks
Philippe

Comment 3 Philipe Mulet

2002-06-13 10:46:21 EDT

Fair enough. Closing then. Please reopen if symptoms occur again.