8262908: JFR: Allow JFR to stream events from a known repository path

[egahlin]

Hi,

Could I have a review that makes it possible to use event streaming against the repository specified on command line (-XX:FlightRecorder:repository=directory)

This is useful if you want start JFR from a script and pass the directory to a monitoring process. Previously you had to use attach and read the directory from a system property.

Testing: jdk/jdk/jfr

Thanks
Erik

---

Progress

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Issue

• JDK-8262908: JFR: Allow JFR to stream events from a known repository path

Reviewers

• Markus Grönlund (@mgronlun - Reviewer)

Reviewing

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[bridgekeeper]

👋 Welcome back egahlin! 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]

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

• hotspot-jfr

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[mlbridge]

Webrevs

• 01: Full - Incremental (dcdd01d9)
• 00: Full (39bc9952)

[mgronlun]

Looks good. Thank you.

[openjdk]

@egahlin 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:

8262908: JFR: Allow JFR to stream events from a known repository path

Reviewed-by: mgronlun

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 161 new commits pushed to the master branch:

• 377b346: 8264752: SIGFPE crash with option FlightRecorderOptions:threadbuffersize=30M
• dc323a9: 8263421: Module image file is opened twice during VM startup
• fbfd4ea: 8265914: Duplicated NotANode and not_a_node
• 9481fad: 8163367: Test javax/swing/JComboBox/8033069/bug8033069NoScrollBar.java javax/swing/JComboBox/8033069/bug8033069ScrollBar.java fails intermittently
• 9adbf15: 8265995: Shenandoah: Move ShenandoahInitMarkRootsClosure close to its use
• 879a77f: 8265757: stack-use-after-scope in perfMemory_posix.cpp get_user_name_slow()
• e4be968: 8265980: Fix systemDictionary and loaderConstraints printing
• f6e26f6: 8265756: AArch64: initialize memory allocated for locals according to Windows AArch64 stack page growth requirement in template interpreter
• 0a4c338: 8263432: javac may report an invalid package/class clash on case insensitive filesystems
• 82b3719: 8265967: Unused NullCheckNode forward declaration in node.hpp
• ... and 151 more: https://git.openjdk.java.net/jdk/compare/fa58aae8f6b31e81f1e7c41af1b9343b1d70c5af...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.

[egahlin]

/integrate

[openjdk]

@egahlin Since your change was applied there have been 172 commits pushed to the master branch:

• 30b1354: 8266153: mark hotspot compiler/onSpinWait tests which ignore VM flags
• eeddb30: 8266150: mark hotspot compiler/arguments tests which ignore VM flags
• feb18d2: 8266149: mark hotspot compiler/startup tests which ignore VM flags
• eb72950: 8266154: mark hotspot compiler/oracle tests which ignore VM flags
• 7f4a9f6: 8266088: compiler/arguments/TestPrintOptoAssemblyLineNumbers test should user driver mode
• f560b89: 8264873: Dependencies: Split ClassHierarchyWalker
• 0a88f0a: 8255915: jdk/incubator/vector/AddTest.java timed out
• ab2aec2: 8265938: C2's conditional move optimization does not handle top Phi
• 5634f20: 8265932: Move safepoint related fields from class Thread to JavaThread
• b67b2b1: 8265690: Use the latest Ubuntu base image version in Docker testing
• ... and 162 more: https://git.openjdk.java.net/jdk/compare/fa58aae8f6b31e81f1e7c41af1b9343b1d70c5af...master

Your commit was automatically rebased without conflicts.

Pushed as commit e144104.

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