shelajev

logHolder <- java.type("org.graalvm.demos.springr.LogHolder")
logHolder$log(dataHolder$value, data[90:100])

shelajev

#include <stdio.h>
#include <polyglot.h>
int main() {
    void *bigInteger = polyglot_java_type("java.math.BigInteger");
    void *(*BigInteger_valueOf)(long) = polyglot_get_member(bigInteger, "valueOf");
    
    void *bi = BigInteger_valueOf(2);
    void *result = polyglot_invoke(bi, "pow", 256);
    
    char buffer[100];

shelajev

# shelajev at shrimp.local in /tmp
→ clang -c -O1 -emit-llvm -I$GRAALVM_HOME/jre/languages/llvm big-integer-demo.c

# shelajev at shrimp.local in /tmp
→ lli --jvm big-integer-demo.bc
115792089237316195423570985008687907853269984665640564039457584007913129639936

shelajev

library(lattice)
mtcars$cars <- rownames(mtcars)
print(barchart(cars~mpg, data=mtcars))

shelajev

public class PolyglotTest {
 
    public static void main(String[] args) {
        System.out.println("Hello World from Java!");
 
        org.graalvm.polyglot.Context context = 
          org.graalvm.polyglot.Context.newBuilder().allowAllAccess(true).build();
 
        context.eval("js", "print('Hello World from JavaScript!');");
        // context.eval("python", "print('Hello World from Python!')");

shelajev

public class PolyglotTest {
 
    public static void main(String[] args) {
        System.out.println("Hello World from Java!");
 
        org.graalvm.polyglot.Context context = org.graalvm.polyglot.Context.newBuilder().allowAllAccess(true).build();
 
        context.eval("js", "print('Hello World from JavaScript!');");
        // context.eval("python", "print('Hello World from Python!')");
        // context.eval("R", "print('Hello World from R!')");

shelajev

const http = require("http");
var BigDecimal = Java.type('java.math.BigDecimal');

http.createServer(function (request, response) {
 response.writeHead(200, {"Content-Type": "text/html"});
 response.end("Hello Graal.js! " + BigDecimal.valueOf(2).pow(100).toString() );
}).listen(8000, function( ) {
  console.log("Graal.js server running at http://127.0.0.1:8000/");
});

shelajev

const http = require("http");
http.createServer(function (request, response) {
 response.writeHead(200, {"Content-Type": "text/html"});
 response.end("Hello Graal.js! " + Polyglot.eval('R', 'runif(100)')[0] );
}).listen(8000, function( ) { 
  console.log("Graal.js server running at http://127.0.0.1:8000/"); 
});

shelajev

package org.sample;
import java.util.Arrays;
import org.openjdk.jmh.annotations.*;
@State(Scope.Benchmark)
public class Streams {
  private double[] values = new double[2000000];
  @Benchmark
  public double mapReduce() {
    return Arrays.stream(values)
      .map(x -> x + 1)

shelajev

return Arrays.stream(values).parallel()
  .map(x -> x + 1)
  .map(x -> x * 2)
  .map(x -> x + 5)
  .reduce(0, Double::sum);