[crac] RFR: Add Checkpoint timeout

[KIRIYAMA Takuya]

On Fri, 8 Dec 2023 09:14:19 GMT, KIRIYAMA Takuya <duke at openjdk.org> wrote:

> Java process sometimes hangs when checkpoint for some reasons.
> For example, this problems occurs if you specify certain options for CRAC_CRIU_OPTS.
> 
> 
> # export CRAC_CRIU_OPTS=-V
> # java -XX:CRaCCheckpointTo=/work/cp CRACTest
> CR: Checkpoint ...
> 
> CRACTest process is not killed and is waiting for checkpoint.
> 
> 
> # ls /work/cp
> cppath  perfdata
> 
> 
> To avoid this problem, I want to add the checkpoint timeout.
> Can I submit a pull request to this repository? I would like you to review this change.

OK. I changed the timeout to infinite so that it works the same as before by default.

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PR Comment: https://git.openjdk.org/crac/pull/147#issuecomment-1857737555