RFR: 8280353: -XX:ArchiveClassesAtExit should print warning if base archive failed to load

[Yumin Qi]

On Thu, 27 Jan 2022 07:28:36 GMT, Ioi Lam <iklam at openjdk.org> wrote:

>> Hi, Please review
>> 
>> Before fix of 8261455 (https://bugs.openjdk.java.net/browse/JDK-8261455), when -XX:ArchiveClassesAtExit=<archive_name> used to dump dynamic archive, if base archive failed to load due to some reason with 'auto'  share mode, the process exit with information like:
>> 
>> Error occurred during initialization of VM
>> -XX:ArchiveClassesAtExit is unsupported when base CDS archive is not loaded. Run with -Xlog:cds for more info.
>> 
>> This behavior is not correct. Under 'auto' mode, if shared archive failed to map, CDS should be disabled and run without sharing.
>> After the fix of 8261455, the behavior is correct: if base archive failed to load under 'auto' mode, CDS is disabled and continue without sharing. Print out VM warning if -XX:ArchiveClassesAtExit=<archive_name> in option to do dynamic dump, the archive will not be created.
>> 
>> Tests: tier1,tier4
>> Also manually execute the examples in bug description.
>> 
>> Thanks
>> Yumin
>
> LGTM.

@iklam @calvinccheung Thanks for review!

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PR: https://git.openjdk.java.net/jdk/pull/7241