JEP 193: Enhanced Volatiles

[Jeroen Frijters]

Sorry Peter, but that is a nonsensical definition of language semantics. By using your definition, if Microsoft adds a feature to the CLR using custom attributes, the Java language semantics change, because on IKVM you can use these custom attributes in your Java code.

Regards,
Jeroen

> -----Original Message-----
> From: Peter Levart [mailto:peter.levart at gmail.com]
> Sent: Wednesday, March 5, 2014 18:07
> To: Jeroen Frijters; Brian Goetz; core-libs-dev at openjdk.java.net; Doug
> Lea
> Subject: Re: JEP 193: Enhanced Volatiles
> 
> 
> On 03/05/2014 05:55 PM, Jeroen Frijters wrote:
> 
> 
> 	Brian Goetz wrote:
> 
> 
> 		I suspect you were expecting this response: we don't add
> language
> 		semantics through annotations.
> 
> 	Technically, we're not adding language semantics. The JVM is the
> one interpreting the annotations.
> 
> 
> And the JVM is the one implementing the language semantics (together
> with javac which feeds the JVM with bytecodes). Language semantcis are
> implemented by the combination of javac and JVM. If you say that this
> feature does not require any change to javac, you're just saying that
> you put all the burden on the JVM, but you *are* implementing the
> language semantics using annotations nevertheless...
> 
> 
> Regards, Peter
> 
> 
> 
> 
> 
> 		I'm not trying to frustrate you; evolving a language with
> millions of
> 		users is really, really hard.  And one of the things that
> makes it hard
> 		is recognizing our intrinsic conflicts of interest between
> "what good
> 		will this do me" and "what harm will it do others."
> 
> 	I understand, that's why I want to avoid adding language support
> for this niche/specialist feature.
> 
> 	Regards,
> 	Jeroen
> 
>