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Bug 223094

Summary:	Use List.nil() where possible
Product:	java	Reporter:	Tomas Hurka <thurka>
Component:	Compiler	Assignee:	Dusan Balek <dbalek>
Status:	RESOLVED FIXED
Severity:	normal	Keywords:	PERFORMANCE
Priority:	P3
Version:	7.3
Hardware:	All
OS:	All
Issue Type:	DEFECT	Exception Reporter:

Description Tomas Hurka 2012-12-01 07:37:51 UTC

It looks like there are several cases, where List.nil() is not used. Example is com.sun.tools.javac.tree.JCTree$JCMethodInvocation.args list. This can save some memory especially in cases, where a lot of sources are parsed.

Comment 1 Tomas Hurka 2012-12-01 09:10:45 UTC

It looks like ListBuffer is creating this empty List instances.

Comment 2 Jan Lahoda 2012-12-13 11:54:38 UTC

nb-javac:
http://hg.netbeans.org/main/nb-javac/rev/f18e29a7f85d

NetBeans proper:
http://hg.netbeans.org/jet-main/rev/65fac4a3f53a

Comment 3 Quality Engineering 2012-12-14 02:42:29 UTC

Integrated into 'main-golden', will be available in build *201212140001* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)
Changeset: http://hg.netbeans.org/main-golden/rev/65fac4a3f53a
User: Jan Lahoda <jlahoda@netbeans.org>
Log: #223094: updating nb-javac, to incorporate ListBuffer optimization