8271242: Add Arena regression tests #4909

tstuefe · 2021-07-27T06:06:40Z

May I please have reviews for these test additions. These are new regression tests for hotspot arenas. We don't have any and it makes sense to have them since this code is fragile and we work on it.

It also contains some new gtest utility functions which I will use to consolidate some more test coding, mainly in the metaspace gtests (in a future rfe).

It also comes with a new jtreg gtest launcher for arena tests to test UseMallocOnly mode. As long as we support that, we should test it.

tests:

gtests, manually with 32/64 bit and with/without UseMallocOnly
GHAs

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Issue

JDK-8271242: Add Arena regression tests

Reviewers

Mikhailo Seledtsov (@mseledts - Committer)
Coleen Phillimore (@coleenp - Reviewer)

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Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk pull/4909/head:pull/4909
$ git checkout pull/4909

Update a local copy of the PR:
$ git checkout pull/4909
$ git pull https://git.openjdk.java.net/jdk pull/4909/head

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Checkout this PR locally:
$ git pr checkout 4909

View PR using the GUI difftool:
$ git pr show -t 4909

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https://git.openjdk.java.net/jdk/pull/4909.diff

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bridgekeeper · 2021-07-27T06:07:55Z

👋 Welcome back stuefe! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

openjdk · 2021-07-27T06:10:35Z

@tstuefe The following label will be automatically applied to this pull request:

hotspot

When this pull request is ready to be reviewed, an "RFR" email will be sent to the corresponding mailing list. If you would like to change these labels, use the /label pull request command.

mlbridge · 2021-07-27T09:48:51Z

Webrevs

00: Full (80875d3b)

mseledts

Thank you for adding these tests. These new tests look good to me (from HotSpot test engineer POV). Someone who is an expert in Arena allocation should review this change as well.

mseledts · 2021-07-27T22:38:06Z

test/hotspot/jtreg/gtest/ArenaGtests.java

+ * @library /test/lib
+ * @modules java.base/jdk.internal.misc
+ *          java.xml
+ * @requires vm.flagless


Style comment: Please group all at-requires together in the same or neighboring lines.

tstuefe · 2021-07-28T09:27:00Z

Thank you for adding these tests. These new tests look good to me (from HotSpot test engineer POV). Someone who is an expert in Arena allocation should review this change as well.

Thank you Mikhailo!

coleenp

Looks good. Thank you for writing these tests.

coleenp · 2021-07-29T21:39:48Z

test/hotspot/gtest/memory/test_arena.cpp

+    ASSERT_FALSE(ar.contains(p));
+  }
+  // Allocate again. The new allocations should have the same position as the 0-sized
+  // first one.


It seems so dangerous to allow zero sized Amalloc.

I agree, but I wanted these tests to test existing behavior.
I tried to do a quick "lets assert > 0" and that backfired, a bit of cleanup would be needed at the caller side.

openjdk · 2021-07-29T21:40:48Z

@tstuefe 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:

8271242: Add Arena regression tests

Reviewed-by: mseledtsov, coleenp

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 36 new commits pushed to the master branch:

d09b028: 8271396: Spelling errors
489e5fd: 8268019: C2: assert(no_dead_loop) failed: dead loop detected
6afcf5f: 8270886: Crash in PhaseIdealLoop::verify_strip_mined_scheduling
a0504cf: Merge
20d2dc1: 8271403: mark hotspot runtime/memory tests which ignore external VM flags
e593e3d: 8271402: mark hotspot runtime/os tests which ignore external VM flags
7bf72ce: 8271412: ProblemList javax/sound/midi/Sequencer/Looping.java
6878b05: 8271251: JavaThread::java_suspend() fails with "fatal error: Illegal threadstate encountered: 6"
c8ae7e5: 8271174: runtime/ClassFile/UnsupportedClassFileVersion.java can be run in driver mode
5fcf720: 8271352: Extend jcc erratum mitigation to additional processors
... and 26 more: https://git.openjdk.java.net/jdk/compare/45d277feb04a51faa3858099336fc67dfb222542...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

tstuefe · 2021-07-30T16:41:38Z

Looks good. Thank you for writing these tests.

Thank you Coleen!

tstuefe · 2021-07-30T16:41:44Z

/integrate

openjdk · 2021-07-30T16:42:48Z

Going to push as commit cd7e30e.
Since your change was applied there have been 45 commits pushed to the master branch:

5b3c418: 8270321: Startup regressions in 18-b5 caused by JDK-8266310
baf7797: 8049301: Suspicious use of string identity checks in JComponent.setUIProperty
89f5c96: 8232066: Remove outdated code/methods from PKIX implementation
9856ace: 8268963: [IR Framework] Some default regexes matching on PrintOptoAssembly in IRNode.java do not work on all platforms
b59418f: 8270060: (jdeprscan) tools/jdeprscan/tests/jdk/jdeprscan/TestRelease.java failed with class file for jdk.internal.util.random.RandomSupport not found
4f42eb6: 8269523: runtime/Safepoint/TestAbortOnVMOperationTimeout.java failed when expecting 'VM operation took too long'
77fbd99: 8270341: Test serviceability/dcmd/gc/HeapDumpAllTest.java timed-out
048fb2c: Merge
286d313: 8271489: (doc) Clarify Filter Factory example
d09b028: 8271396: Spelling errors
... and 35 more: https://git.openjdk.java.net/jdk/compare/45d277feb04a51faa3858099336fc67dfb222542...master

Your commit was automatically rebased without conflicts.

openjdk · 2021-07-30T16:43:02Z

@tstuefe Pushed as commit cd7e30e.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.

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80875d3

openjdk bot added the hotspot label Jul 27, 2021

tstuefe marked this pull request as ready for review Jul 27, 2021

openjdk bot added the rfr label Jul 27, 2021

mseledts approved these changes Jul 27, 2021

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coleenp approved these changes Jul 29, 2021

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openjdk bot added the ready label Jul 29, 2021

openjdk bot closed this Jul 30, 2021

openjdk bot added integrated and removed ready rfr labels Jul 30, 2021

tstuefe deleted the JDK-8271242-Add-Arena-regression-tests branch Aug 23, 2021

openjdk / jdk Public

8271242: Add Arena regression tests #4909

8271242: Add Arena regression tests #4909

tstuefe commented Jul 27, 2021 •

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8271242: Add Arena regression tests #4909

8271242: Add Arena regression tests #4909

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