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Type: Enhancement
Resolution: Fixed
Priority: P4
Fix Version/s: 22
Affects Version/s: 22, 23
Component/s: hotspot
Labels:

Subcomponent:
runtime
Resolved In Build:
b16
CPU:

generic
OS:

generic
Verification:
Fix failed

The LockingMode flag from ~~JDK-8291555~~ was implemented as an
experimental flag. We made it a regular product flag in JDK22 in
preparation for project Lilliput (See ~~JDK-8315061~~).

In the next release, we plan to change the default of the LockingMode
flag from LM_LEGACY to LM_LIGHTWEIGHT. Project Lilliput needs
the LockingMode flag to be LM_LIGHTWEIGHT. In a release sometime
after the next release, we place to remove support for LM_LEGACY.

Insert additional justification for Lilliput here.

csr for

JDK-8315881 Change LockingMode default from LM_LEGACY to LM_LIGHTWEIGHT

Closed

is cloned by

JDK-8319251 [REDO] Change LockingMode default from LM_LEGACY to LM_LIGHTWEIGHT

Resolved

relates to

JDK-8319253 [BACKOUT] Change LockingMode default from LM_LEGACY to LM_LIGHTWEIGHT

Resolved

JDK-8316397 StackTrace/Suspended/GetStackTraceSuspendedStressTest.java failed with "SingleStep event is NOT expected"

Open

JDK-8316880 AArch64: "stop: Header is not fast-locked" with -XX:-UseLSE since JDK-8315880

Resolved

JDK-8316401 sun/tools/jhsdb/JStackStressTest.java failed with "InternalError: We should have found a thread that owns the anonymous lock"

Resolved

JDK-8324114 [lworld] GTestWrapper.java fails with "assert(LockingMode == LM_LEGACY) failed: should only be called with legacy stack locking"

Resolved

JDK-8316746 Top of lock-stack does not match the unlocked object

Closed

JDK-8316751 IllegalMonitorStateException: current thread is not owner

Closed

JDK-8316921 Perf regressions up to 14% in b16 many benchmarks all platforms

Closed

JDK-8315884 New Object to ObjectMonitor mapping

Resolved

JDK-8331073 Deprecate LockingMode=LM_LEGACY

Closed

JDK-8317262 LockStack::contains(oop) fails "assert(t->is_Java_thread()) failed: incorrect cast to JavaThread"

Resolved

JDK-8318895 Deoptimization results in incorrect lightweight locking stack

Resolved

JDK-8323781 [lworld] Synchronization on inline type does not throw IllegalMonitorStateException with lightweight locking

Resolved

JDK-8291555 Implement alternative fast-locking scheme

Resolved

JDK-8315061 Make LockingMode a product flag

Resolved

JDK-8316735 Print LockStack in hs_err files

Resolved

links to

Commit openjdk/jdk/455cfae1

Review openjdk/jdk/15797

(13 relates to, 2 links to)

Assignee:: Daniel Daugherty

Reporter:: Daniel Daugherty

Votes:: 0 Vote for this issue

Watchers:: 10 Start watching this issue

Created:: 2023-09-07 13:26

Updated:: 2024-04-24 10:36

Resolved:: 2023-09-20 08:29

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