RFR: 8323183: ClassFile API performance improvements [v4]

[Chen Liang]

On Mon, 8 Jan 2024 16:17:47 GMT, Adam Sotona <asotona at openjdk.org> wrote:

>> ClassFile API performance related improvements have been separated from #17121 into this PR.
>> 
>> These improvements are important to minimize performance regression of
>> 8294961: Convert java.base/java.lang.reflect.ProxyGenerator to use the Classfile API to generate proxy classes #17121
>> 
>> Please review.
>> 
>> Thanks,
>> Adam
>
> Adam Sotona has updated the pull request incrementally with one additional commit since the last revision:
> 
>   applied suggested changes

src/java.base/share/classes/jdk/internal/classfile/impl/StackCounter.java line 356:

> 354:                 }
> 355:                 case 'L' -> {
> 356:                     while (cur < end && descriptor.charAt(cur++) != ';');

Suggestion:

                    cur = descriptor.indexOf(';', cur) + 1;
                    if (cur == 0)
                        throw new IllegalArgumentException("Bad method descriptor: " + descriptor);

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PR Review Comment: https://git.openjdk.org/jdk/pull/17306#discussion_r1445001589