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Type: Enhancement
Resolution: Fixed
Priority: P4
Fix Version/s: 24
Affects Version/s: 21
Component/s: hotspot
Labels:
- lilliput
- release-note=yes

Subcomponent:
runtime
Resolved In Build:
b24
CPU:

generic
OS:

generic

Tracks integration into mainline JDK

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hs_err_pid23976.log
130 kB
2023-05-19 11:07
hs_err_pid3807180.log
99 kB
2023-05-19 11:11

blocks

JDK-8340396 SA could do better with the Object header _mark field when using Compact Object Headers

Open

JDK-8342826 Improve performance of oopDesc::klass() after JDK-8305895

Resolved

JDK-8340010 Fix vectorization tests with compact headers

Resolved

JDK-8340118 Improve oopDesc::header_size() related methods

Open

JDK-8341703 Remove Klass::_prototype_header

Open

JDK-8340453 C2: Improve encoding of LoadNKlass for compact headers

Resolved

causes

JDK-8357525 Default CDS archive becomes non-deterministic after JDK-8305895

Resolved

csr for

JDK-8306000 Add experimental -XX:+UseCompactObjectHeaders flag

Closed

is blocked by

JDK-8341044 CDSPlugin.java fails to create compact object header CDS archives

Closed

JDK-8291555 Implement alternative fast-locking scheme

Resolved

JDK-8307236 Rendezvous GC threads under STS for monitor deflation

Resolved

JDK-8315884 New Object to ObjectMonitor mapping

Resolved

relates to

JDK-8344424 C2 SuperWord: mixed type loops do not vectorize with UseCompactObjectHeaders and AlignVector

Open

JDK-8340212 -Xshare:off -XX:CompressedClassSpaceBaseAddress=0x40001000000 crashes on macos-aarch64

Resolved

JDK-8348568 [lworld] Support UseCompactObjectHeaders for Valhalla

Resolved

JDK-8345237 32-bit Zero builds fail with assert(has_klass_gap()) failed: precondition

Resolved

JDK-8344425 Remove or fix empty tests after JDK-8305895

Closed

JDK-8341553 Remove UseCompactObjectHeaders extra CDS archives

Resolved

JDK-8350457 Implement JEP 519: Compact Object Headers

Resolved

JDK-8139457 Relax alignment of array elements

Resolved

JDK-8343929 Remove PreservedMarksSet::createTask() after JDK-8305895

Resolved

JDK-8344917 Fix recent NULL usage backsliding

Resolved

JDK-8294992 JEP 450: Compact Object Headers (Experimental)

Closed

JDK-8305896 Alternative full GC forwarding

Closed

JDK-8305898 Alternative self-forwarding mechanism

Closed

JDK-8346714 [ASAN] compressedKlass.cpp reported applying non-zero offset to null pointer

Resolved

JDK-8353274 [PPC64] Bug related to -XX:+UseCompactObjectHeaders -XX:-UseSIGTRAP in JDK-8305895

Resolved

JDK-8344844 ciReplay tests fail with -XX:+UseCompactObjectHeaders because CDS is disabled since JDK-8341553

Resolved

JDK-8347489 RISC-V: Misaligned memory access with COH

Resolved

JDK-8347140 SIGSEGV in ciVirtualCallTypeData::translate_from with ZGC and -XX:+UseCompactObjectHeaders

Closed

JDK-8328138 Optimize ArrayEquals on AArch64 & fix potential crash

Closed

links to

Commit(master) openjdk/jdk/44ec501a

Review openjdk/jdk/13844

Review openjdk/jdk/13961

Review openjdk/jdk/17872

Review(master) openjdk/jdk/20640

Review(master) openjdk/jdk/20677

(1 blocks, 1 causes, 1 csr for, 4 is blocked by, 19 relates to, 6 links to)

1.	Test Plan for Implementation of JEP 450: Compact Object Headers	Resolved	Leonid Mesnik
2.	Performance Testing Plan for Implementation of JEP 450: Compact Object Headers	Closed	Sergey Kuksenko
3.	Port JEP 450 to RISC-V	Resolved	Hamlin Li
4.	Release Note: Compact Object Headers (Experimental)	Resolved	Roman Kennke

Assignee:: Roman Kennke
Reporter:: Roman Kennke
Votes:: 0 Vote for this issue
Watchers:: 12 Start watching this issue

Created:: 2023-04-12 03:57
Updated:: 2025-08-13 03:36
Resolved:: 2024-11-08 09:23

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