8352116: Deadlock with GCLocker and JVMTI after JDK-8192647

[albertnetymk]

Using a new lock (JNICritical_lock) in GCLocker::block to resolve a deadlock issue. The root cause of the deadlock is that holding Heap_lock while waiting in GCLocker::block is unsafe.

The new lock is held from the start of GCLocker::block to the end of GCLocker::unblock. This requires adjusting Heap_lock's rank to allow acquiring Heap_lock while holding JNICritical_lock. The most important changes are in gcVMOperations.cpp and mutexLocker.cpp.

Test: tier1-8; verified failure can be observed 2/2000 and pass 8000 iterations.

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Issue

• JDK-8352116: Deadlock with GCLocker and JVMTI after JDK-8192647 (Bug - P2)

Reviewers

• Erik Österlund (@fisk - Reviewer) Review applies to bd3aa431
• Kim Barrett (@kimbarrett - Reviewer)

Reviewing

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[openjdk]

@albertnetymk This change now passes all automated pre-integration checks.

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8352116: Deadlock with GCLocker and JVMTI after JDK-8192647

Reviewed-by: kbarrett, eosterlund

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At the time when this comment was updated there had been 32 new commits pushed to the master branch:

• 9bb804b: 8338554: Fix inconsistencies in javadoc/doclet/testLinkOption/TestRedirectLinks.java
• e17c399: 8353201: Open source Swing Tooltip tests - Set 2
• 9fcb06f: 8352997: Open source several Swing JTabbedPane tests
• 74c2d8f: 8353320: Open source more Swing text tests
• 31a6de2: 8353309: Open source several Swing text tests
• 3cc43b3: 8349075: Once again allow -compilejdk in JAVA_OPTIONS
• 9fb3609: 8350774: Generated test- targets broken after JDK-8348998
• 5520ff1: 8340341: Abort in configure when using Xcode 16.0 or 16.1
• 3670fde: 8349467: INIT_TARGETS tab completions on "make" lost with JDK-8348998
• 3241b4e: 8353066: Properly detect Windows/aarch64 as build platform
• ... and 22 more: https://git.openjdk.org/jdk/compare/f7a94feedd63775a09d0bcb9ef3313972e2a5d69...master

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[albertnetymk]

/cc hotspot-gc

[openjdk]

@albertnetymk
The hotspot-gc label was successfully added.

[fisk]

Looks good. Would be nice to refactor the if (UseSerialGC || UseParallelGC) code to something that explains why it's there (those are the GCs that use the new improved GC locker). But that's pre existing so I don't mind if it's split to a separate RFE.

[mlbridge]

Webrevs

• 00: Full (b225cdb7)

[kimbarrett]

Looks good.