> Add jcmd AOT.end_recording diagnostic command.  When this command is issued, 
> a targeted JVM that is currently recording AOT information will stop 
> recording.  Existing functionality is preserved: when stopped the JVM will 
> create the required artifacts based on the execution mode.  Conveniently as 
> the application running on the JVM has not stopped (as was previously the 
> only way to stop recording), the application will resume execution after the 
> artifacts have been generated.
> 
> The command will report back to the user one of the following messages 
> depending on the state of the JVM:
> 
> - AOT.end_recording is unsupported when VM flags -XX:AOTMode=record or 
> -XX:AOTCacheOutput=<file> are missing
> - Recording has already ended.
> - Error: Failed to end recording.
> - Recording ended successfully.
> 
> It follows that issues the command to a JVM that is recording, twice in 
> succession, should (baring internal errors) would produce the following two 
> responses:
> 
> - Recording ended successfully.
> - Recording has already ended.
> 
> Passes tier1 on linux (x64) and windows (x64)

Mat Carter has updated the pull request incrementally with one additional 
commit since the last revision:

  Check exit value in tests

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/27965/files
  - new: https://git.openjdk.org/jdk/pull/27965/files/2223870c..dae85272

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27965&range=06
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27965&range=05-06

  Stats: 2 lines in 2 files changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/27965.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27965/head:pull/27965

PR: https://git.openjdk.org/jdk/pull/27965

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