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Type: Enhancement
Resolution: Fixed
Priority: P2
Fix Version/s: 9
Affects Version/s: 9
Component/s: hotspot
Labels:

Subcomponent:
gc
Resolved In Build:
b24

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8056641	emb-9	Unassigned	P2	Resolved	Fixed	b24
JDK-8063562	8u45	Stefan Karlsson	P2	Resolved	Fixed	b01
JDK-8049579	8u40	Stefan Karlsson	P2	Closed	Fixed	b02
JDK-8070842	emb-8u47	Stefan Karlsson	P2	Resolved	Fixed	team

Currently G1 treats all classes as live except for during full gcs.

Modify the concurrent marking code to keep track of liveness of classes in order to be able to unload unreachable classes at the remark pause.
This involves reusing the infrastructure used by CMS to follow the object headers to find live classes.

backported by

JDK-8056641 G1 Class Unloading after completing a concurrent mark cycle

Resolved

JDK-8063562 G1 Class Unloading after completing a concurrent mark cycle

Resolved

JDK-8070842 G1 Class Unloading after completing a concurrent mark cycle

Resolved

JDK-8049579 G1 Class Unloading after completing a concurrent mark cycle

Closed

clones

JDK-8048248 [Backed out] G1 Class Unloading after completing a concurrent mark cycle

Resolved

duplicates

JDK-8015332 G1: Interned strings with no references only garbage collected upon full GC.

Closed

relates to

JDK-8051611 Implement Class Unloading after completing a concurrent mark cycle

Resolved

JDK-8049420 Backout 8048248 to correct attribution

Resolved

JDK-8056240 Investigate increased GC remark time after class unloading changes in CRM Fuse

Closed

JDK-8048269 Add flag to turn off class unloading after G1 concurrent mark

Resolved

JDK-8048268 G1 Code Root Migration performs poorly

Resolved

JDK-8015332 G1: Interned strings with no references only garbage collected upon full GC.

Closed

JDK-8058563 InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries

Resolved

JDK-8166277 SIGSEGV in Dependencies::DepStream::argument(int)

Closed

JDK-8136973 Unreachable classes are not deleted after the end of Conc Mark Cycle

Closed

JDK-8046146 JEP 156: G1 GC: Reduce need for full GCs

Closed

(1 duplicates, 10 relates to)

Assignee:: Stefan Karlsson

Reporter:: Stefan Karlsson

Votes:: 0 Vote for this issue

Watchers:: 3 Start watching this issue

Created:: 2014-07-07 03:47

Updated:: 2017-11-19 13:09

Resolved:: 2014-07-07 04:52

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