On Tue, 19 Jan 2021 12:02:13 GMT, Claes Redestad <redes...@openjdk.org> wrote:
>> This patch improves `UnixPath.encode` by reusing `JLA.getBytesNoRepl` (which
>> has fast-paths for common encoding) and avoiding a `toCharArray` call on the
>> input by refactoring the `normalizeNativePath` code to operate on `String`.
>> This might have a cost on files on Mac that need additional native
>> normalization.
>>
>> This removes another `ThreadLocal` and a source of `SoftReference`s.
>> Together with the UTF-8 fast-path my UTF-8 encoded file system see
>> substantial speed-ups in a trivial `new File(str).toPath()` microbenchmark.
>
> Claes Redestad has updated the pull request incrementally with one additional
> commit since the last revision:
>
> Fold ToPath into FileOpen, add root benchmarks to keep mix comparable
src/java.base/unix/classes/sun/nio/fs/UnixPath.java line 118:
> 116: try {
> 117: return JLA.getBytesNoRepl(input, Util.jnuEncoding());
> 118: } catch (CharacterCodingException cce) {
The encode method pre-dates JLA.getBytesNoRepl and the recent optimisations so
this is a good cleanup.
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PR: https://git.openjdk.java.net/jdk/pull/2135
