Instead of using byte buddy, why not just maven multi release jars? *1 The Java9+ impl will go to META-INF/java9 or so. We did that in the maven-jlink-plugin for example. *2 Will be much faster and work on Java 16+. Much easier to rest. Drawback: bad IDE support
1: https://maven.apache.org/plugins/maven-compiler-plugin/multirelease.html 2: https://github.com/apache/maven-jlink-plugin/commit/f8bdf5050c266854524aaa51eb36109c00ca692a HTH Ben On Fri, 7 May 2021, 10:52 Erik Svensson, <erik.svens...@nasdaq.com> wrote: > Howdy all! > > > > I’m looking to do some work on FastMath to increase performance by using > java.lang.Math where it is applicable (ie where there is an > @HotspotIntrinsicCandidate annotation on the method). > > Since HIC was introduced in java 9 and the code needs to work on pre-java > 9 and I don’t want to compromise performance (since performance is the > whole reason I’m doing this) I’m thinking about using ByteBuddy to > construct a proxy class but I’m unsure whether that is allowed in Apache > Commons. > > Btw, I’ve tested using MethodHandles but that consumed almost all the > performance improvement java.lang.Math had over FastMath (for sin anyway). > > > > Cheers > > > > *Erik Svensson* > > Principal Architect > Strategic Programs, Platform & Product Engineering > > [image: Nasdaq, Inc.] <http://www.nasdaq.com/> > > *Desk* > *Mobile* > *Email* > *Address * > > + 46 8 405 66 39 > + 46 73 449 66 39 > erik.svens...@nasdaq.com > Tullvaktsvägen 15, Stockholm > > [image: signature_170089658] <https://www.facebook.com/nasdaq/> > > [image: signature_1919909931] <https://twitter.com/nasdaq> > > [image: signature_1754902186] <https://www.linkedin.com/company/nasdaq> > > [image: signature_1778387217] <https://www.instagram.com/nasdaq/> > > [image: signature_1326178797] <https://www.pinterest.com/nasdaq/> > > rewritetomorrow.com > > > > ******************************************* > CONFIDENTIALITY AND PRIVACY NOTICE: This e-mail and any attachments are > for the exclusive and confidential use of the intended recipient and may > constitute non-public information. Personal data in this email is governed > by our Privacy Policy at https://www.nasdaq.com/privacy-statement > unless explicitly excluded from it; please see the section in the policy > entitled “Situations Where This Privacy Policy Does Not Apply” for > circumstances where different privacy terms govern emailed personal data. > If you received this e-mail in error, disclosing, copying, distributing or > taking any action in reliance of this e-mail is strictly prohibited and may > be unlawful. Instead, please notify us immediately by return e-mail and > promptly delete this message and its attachments from your computer system. > We do not waive any work product or other applicable legal privilege(s) by > the transmission of this message. > ******************************************* >
