[crac] RFR: Drop perfdata and cppath

[Anton Kozlov]

On Wed, 27 Sep 2023 20:40:53 GMT, Radim Vansa <rvansa at openjdk.org> wrote:

> Storing PerfMemory contents into file might be fragile; if the file is corrupted (e.g. due to wrong permissions) JVM might receive SIGBUS when updating performance counters after restore.
> This commit provides alternate solution, moving the shared file-mapped memory into private anonymous memory during C/R.

test/jdk/jdk/crac/PerfMemoryRestoreTest.java line 66:

> 64:             Thread.sleep(10);
> 65:         }
> 66:         // Note: we need to check the checkpoint.pid(), which should be restored (when using CRIU),

Could you also check that jcmd works after restore?

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PR Review Comment: https://git.openjdk.org/crac/pull/119#discussion_r1342988896