Integrated: 4926314: Optimize Reader.read(CharBuffer)

[Philippe Marschall]

On Thu, 31 Dec 2020 10:10:56 GMT, Philippe Marschall <github.com+471021+marschall at openjdk.org> wrote:

> Implement three optimiztations for Reader.read(CharBuffer)
> 
> * Add a code path for heap buffers in Reader#read to use the backing array instead of allocating a new one.
> * Change the code path for direct buffers in Reader#read to limit the intermediate allocation to `TRANSFER_BUFFER_SIZE`.
> * Implement `InputStreamReader#read(CharBuffer)` and delegate to `StreamDecoder`.
> * Implement `StreamDecoder#read(CharBuffer)` and avoid buffer allocation.

This pull request has now been integrated.

Changeset: 65c19c40
Author:    Philippe Marschall <philippe.marschall at gmail.com>
Committer: Brian Burkhalter <bpb at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/65c19c40
Stats:     371 lines in 6 files changed: 361 ins; 0 del; 10 mod

4926314: Optimize Reader.read(CharBuffer)

Reviewed-by: alanb, bpb

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PR: https://git.openjdk.java.net/jdk/pull/1915