8273804: Platform.isTieredSupported should handle the no-compiler case

[shipilev]

Happens with Zero tests:

$ CONF=linux-x86_64-zero-fastdebug make exploded-test TEST=compiler/codecache/CheckSegmentedCodeCache.java
...

java.lang.NullPointerException: Cannot invoke "String.contains(java.lang.CharSequence)" because "jdk.test.lib.Platform.compiler" is null
at jdk.test.lib.Platform.isTieredSupported(Platform.java:82)
at compiler.codecache.CheckSegmentedCodeCache.verifySegmentedCodeCache(CheckSegmentedCodeCache.java:61)
at compiler.codecache.CheckSegmentedCodeCache.main(CheckSegmentedCodeCache.java:108)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:833) 

Additional testing:

• Linux x86_64 Zero, compiler/codecache/CheckSegmentedCodeCache.java now properly fails with "no compilers" error

---

Progress

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Issue

• JDK-8273804: Platform.isTieredSupported should handle the no-compiler case

Reviewers

• David Holmes (@dholmes-ora - Reviewer)

Reviewing

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[openjdk]

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[mlbridge]

Webrevs

• 00: Full (949853c7)

[dholmes-ora]

Looks fine and trivial.

Cheers,
David

[openjdk]

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

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8273804: Platform.isTieredSupported should handle the no-compiler case

Reviewed-by: dholmes

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At the time when this comment was updated there had been 1 new commit pushed to the master branch:

• 4c673df: 8273656: Improve java.lang.invoke.MethodType.parameterList() and its usage

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[shipilev]

Thank you!

/integrate

[openjdk]

Going to push as commit 46af82e.
Since your change was applied there have been 10 commits pushed to the master branch:

• 2d13fb2: 8273803: Zero: Handle "zero" variant in CommandLineOptionTest.java
• d4546b6: 8273526: Extend the OSContainer API pids controller with pids.current
• 74ffe12: 8273575: memory leak in appendBootClassPath(), paths must be deallocated
• cbffecc: 8273832: gc/shenandoah/TestJcmdHeapDump.java does not have a @requires vm.gc.shenandoah
• 7b2beb6: 8273823: Problemlist gc/stringdedup tests timing out on ZGC
• 8290424: 8272771: frame::pd_ps() is not implemented on any platform
• a3ca770: 8272815: jpackage --type rpm produces an error: Invalid or unsupported type: [null]
• 8132bfd: 8273559: Shenandoah: Shenandoah should support multi-threaded heap dump
• f531b5c: 8273514: java/util/DoubleStreamSums/CompensatedSums.java failure
• 4c673df: 8273656: Improve java.lang.invoke.MethodType.parameterList() and its usage

Your commit was automatically rebased without conflicts.

[openjdk]

@shipilev Pushed as commit 46af82e.

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