RFR [8051382] Optimize java.lang.reflect.Modifier.toString() (original) (raw)
Martin Buchholz martinrb at google.com
Sat Jul 19 15:58:07 UTC 2014
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StringJoiner seems written in a style suitable for an application, not in a low-level performance-oriented style suitable for a JDK core library. But we can fix that.
http://cr.openjdk.java.net/~martin/webrevs/openjdk9/StringJoiner-optimization/
On Fri, Jul 18, 2014 at 6:18 PM, Ivan Gerasimov <ivan.gerasimov at oracle.com> wrote:
On 19.07.2014 3:07, Martin Buchholz wrote:
I took a quick look at StringJoiner. It looks to me like this won't be an optimization, because StringJoiner uses StringBuilder internally, and will actually perform more total operations. Unfortunately this is true. Microbenchmarking shows that StringJoiner makes the things 30% slower, which is sad. Then I propose another simple patch giving +15% to the speed: http://cr.openjdk.java.net/~igerasim/8051382/1/webrev/ Sincerely yours, Inan
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