APAR status
Closed as program error.
Error description
Error Message: java.lang.NullPointerException in sun.font.GlyphLayout$EngineRecord.init result the hung. . Stack Trace: java/util/HashMap.findNonNullKeyEntry(HashMap.java:526(Compiled Code)) java/util/HashMap.getEntry(HashMap.java(Compiled Code)) java/util/HashMap.get(HashMap.java(Compiled Code)) sun/font/SunLayoutEngine.getEngine(SunLayoutEngine.java:115(Comp iled Code)) sun/font/GlyphLayout$EngineRecord.init(GlyphLayout.java:642(Comp iled Code)) sun/font/GlyphLayout.nextEngineRecord(GlyphLayout.java:494(Compi led Code)) sun/font/GlyphLayout.layout(GlyphLayout.java:417(Compiled Code)) sun/font/ExtendedTextSourceLabel.createGV(ExtendedTextSourceLabe l.java:308(Compiled Code)) sun/font/ExtendedTextSourceLabel.getGV(ExtendedTextSourceLabel.j ava:294(Compiled Code)) sun/font/ExtendedTextSourceLabel.createCharinfo(ExtendedTextSour ceLabel.java:566(Compiled Code)) sun/font/ExtendedTextSourceLabel.getCharinfo(ExtendedTextSourceL abel.java:492(Compiled Code)) sun/font/ExtendedTextSourceLabel.getLineBreakIndex(ExtendedTextS ourceLabel.java:439(Compiled Code)) java/awt/font/TextMeasurer.calcLineBreak(TextMeasurer.java:320(C ompiled Code)) java/awt/font/TextMeasurer.getLineBreakIndex(TextMeasurer.java:5 56) java/awt/font/LineBreakMeasurer.nextOffset(LineBreakMeasurer.jav a:352) java/awt/font/LineBreakMeasurer.nextLayout(LineBreakMeasurer.jav a:434) java/awt/font/LineBreakMeasurer.nextLayout(LineBreakMeasurer.jav a:407) .. .. . NA
Local fix
NA
Problem summary
java.awt.font.LineBreakMeasurer, TextMeasurer method calls leads to an endless loop in a multithreaded application. JDK internal implementation class (SunLayoutEngine) is not thread safe and also uses normal HashMap leading to an infinite loop and thus resulting hung.
Problem conclusion
This defect will be fixed in: 6.0.0 SR12 6.0.1 SR4 7.0.0 SR3 . JVM has been updated to use concurrent HashMap to prevent the infinite loop in multithread enviornment.
Temporary fix
NA
Comments
APAR Information
APAR number
IV26985
Reported component name
JAVA CLASS LIBS
Reported component ID
620700130
Reported release
600
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2012-08-24
Closed date
2012-08-30
Last modified date
2012-08-31
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
JAVA CLASS LIBS
Fixed component ID
620700130
Applicable component levels
R600 PSY
UP
R700 PSY
UP
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Document Information
Modified date:
31 August 2012