invokedynamic Questions
5
Solved
I keep hearing about all the new cool features that are being added to the JVM and one of those cool features is invokedynamic. I would like to know what it is and how does it make reflective progr...
Gymnast asked 10/7, 2011 at 2:15
2
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I am trying to compile and load dynamically generated Java code during runtime. Since both ClassLoader::defineClass and Unsafe::defineAnonymousClass have serious drawbacks in this scenario, I tried...
Lillylillywhite asked 22/2, 2022 at 16:26
1
As of Kotlin 1.6.0, for Kotlin/JVM projects one may specify the -jvm-target version option up to Java 17, see general and Gradle plugin documentation.
What are the benefits of doing so?
I couldn't ...
Cirillo asked 9/12, 2021 at 17:21
3
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Context: I've been benchmarking the difference between using invokedynamic and manually generating bytecode (this is in the context of deciding whether a compiler targeting the JVM should emit more...
Fletcher asked 5/4, 2021 at 3:33
4
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I am studying new features of JDK 1.7 and I just can't get it what MethodHandle is designed for? I understand (direct) invocation of the static method (and use of Core Reflection API that is straig...
Glucose asked 11/1, 2012 at 17:27
1
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I have two classes A and B, both define method foo() with common signature (accept nothing, return void). They don't have the common base class (or interface) that declares this method. I want to c...
Kai asked 11/6, 2020 at 9:32
1
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I want to try and avoid reflection for invoking a constructor and am trying to follow the LamdaMetaFactory approach taken in this post - Faster alternatives to Java's reflection
My class that ...
Whenever asked 7/5, 2018 at 9:43
3
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As written in JEP 280: Indify String Concatenation:
Change the static String-concatenation bytecode sequence generated by javac to use invokedynamic calls to JDK library functions. This will ena...
Answerable asked 1/10, 2017 at 13:34
1
Java code
package lambda_cache_example_java;
interface Semigroup1<A> {
public A append(A a1, A a2);
}
interface Semigroup2<A> {
public A append(A a1, A a2);
public interface Foo{...
Pietrek asked 24/11, 2016 at 6:36
1
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At my job we have a DSL for specfying mathematical formulas, that we later apply to a lot of points (in the millions).
As of today, we build an AST of the formula, and visit each node to produce w...
Toein asked 8/6, 2016 at 10:19
1
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I wrote an implementation of bubble sort to play around a bit with Groovy and see if --indy have any noticeable effect on the performance.
Essentially, it sorts a list of one thousand random integ...
Knowlton asked 23/4, 2015 at 3:10
3
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MethodType methodType = MethodType.methodType(void.class, ByteBuffer.class);
MethodHandle handle = MethodHandles.publicLookup().findConstructor(type, methodType);
Function<ByteBuffer, Object>...
Boccioni asked 11/12, 2014 at 7:40
1
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I was trying to check if it is possible to use MethodHandle::invoke or MethodHandle::invokeExact as method references for a functional interface that accepts a MethodHandle and returns a generified...
Subsellium asked 10/12, 2014 at 5:41
0
In Groovy 2.1, full support was added for invokedynamic (see here and here).
In order to use this feature, it looks like JDK7 is required and the "indy" Groovy jar.
I'm using Grails 2.4.3, with J...
Comyns asked 22/10, 2014 at 15:47
3
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How can I invoke private method using method handles ?
As far as I can see there are only two kinds of publicly accessible Lookup instances:
MethodHandles.lookup()
MethodHandles.publicLookup()
...
Emmetropia asked 2/10, 2013 at 10:49
1
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Java's MethodHandle.invokeExact(Object...args) takes a variable-length list of arguments. When I try to pass an array of Object [] instead of a list, though, I get an error. See below:
private voi...
Gin asked 2/5, 2014 at 18:1
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I'm working with Java bytecode via ASM and am trying to get a simple invokedynamic example functioning properly. I feel as though I'm fundamentally misunderstanding how invokedynamic is supposed to...
Schoolroom asked 24/9, 2013 at 2:2
1
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I really love Grails but I was wondering how to get the performance benefits of Groovy 2.
The question is how to configure the development and production environments in order to get that "close to...
Aceves asked 4/4, 2013 at 6:12
2
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I've read through the "What's new in Groovy 2.0" and I'm a bit confused about when to use @CompileStatic. The article mentions that the @CompileStatic annotation was added for developers who weren'...
Bracci asked 7/2, 2013 at 22:17
4
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Is there an estimate that says how much JSR-292 will impact Groovy performance?
Bailar asked 6/1, 2010 at 6:1
1
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Rich Hickey and others have mentioned that Clojure will not get a significant improvement from the upcoming invokeDynamic planned for JVM 7 or 8, but will see a performance gain from tail recursion...
Philosophical asked 29/11, 2010 at 14:1
1
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