RFR: 8284910: Buffer clean in PasswordCallback [v8]

[Xue-Lei Andrew Fan]

On Wed, 27 Apr 2022 16:02:04 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

>> Xue-Lei Andrew Fan has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   remove trailing whitespace
>
> test/jdk/javax/security/auth/callback/PasswordCallback/CheckCleanerBound.java line 50:
> 
>> 48:         for (int i = 0; i < 10 && weakHashMap.size() != 0; i++) {
>> 49:             System.gc();
>> 50:             Thread.sleep(100);
> 
> You can drop this sleep to 10ms to cut the average test time.  It might be interesting to know how many retries are typical.

Hm, it looks like a good idea to improve the testing performance (code updated).  The cleaner get called in the 1st GC collection on my local laptop.

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PR: https://git.openjdk.java.net/jdk/pull/8272