[crac] RFR: Drop perfdata and cppath [v2]

[Radim Vansa]

On Thu, 12 Oct 2023 13:26:03 GMT, Anton Kozlov <akozlov at openjdk.org> wrote:

>> Radim Vansa has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Add jcmd <pid> PerfCounter.print to the test
>
> It should be possible to remove 
> 
> static int checkpoint_fd = -1;
> 
> 
> from https://github.com/openjdk/crac/pull/119/files#diff-7313eb3d328797a7720fa1b2b73cd159934506593443e45534baad80cb1382b7R66

@AntonKozlov Done. I also had to fixup the test, as in GHA the temp directory was set to a local folder and actually it has to be hardcoded to `/tmp` on Linux (local testing did not reveal that).

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PR Comment: https://git.openjdk.org/crac/pull/119#issuecomment-1762160673