headius

%w[runtime wasm wasi].each {|pkg| require "/Users/headius/.m2/repository/com/dylibso/chicory/#{pkg}/0.0.3/#{pkg}-0.0.3.jar"}

module Chicory
  %w[
      runtime.Module
      runtime.HostImports
      runtime.wasi.WasiOptions
      runtime.wasi.WasiPreview1
      wasm.types.Value].each do |cls|
    java_import "com.dylibso.chicory.#{cls}"

headius

Too much for teh twitterz :)

JVM + invokedynamic is in a completely different class than CLR + DLR, for the same reasons that JVM is in a different class than CLR to begin with.

CLR can only do its optimization up-front, before executing code. This is a large part of the reason why C# is designed the way it is: methods are non-virtual by default so they can be statically inlined, types can be specified as value-based so their allocation can be elided, and so on. But even with those language features CLR simply cannot optimize code to the level of a good, warmed-up JVM.

The JVM, on the other hand, optimizes and reoptimizes code while it runs. Regardless of whether methods are virtual/interface-dispatched, whether objects are transient, whether exception-handling is used heavily...the JVM sees through the surface and optimizes code appropriate for how it actually runs. This gives it optimization opportunities that CLR will never have without adding a comparable profiling JIT.

So how does this affect dynamic

headius

commit dac864582a44da0017fdc5b85d431c05f40eb675
Author: Charles Oliver Nutter <headius@headius.com>
Date:   Sat Apr 22 12:40:27 2023 -0500

    criu testing

diff --git a/bin/jruby.sh b/bin/jruby.sh
index 00903f0ba8..fd62212a07 100755
--- a/bin/jruby.sh
+++ b/bin/jruby.sh

headius

root@e7fc053b9e41:/instantOnDemo/jruby# time jruby -e 'puts "hello!"'
hello!

real    0m5.546s
user    0m9.524s
sys     0m0.796s
root@e7fc053b9e41:/instantOnDemo/jruby# jruby --checkpoint -e 'puts "hello!"'
Warming up JRuby... done! Saving checkpoint.
Killed
root@e7fc053b9e41:/instantOnDemo/jruby# time jruby --restore                      

headius

Chicken tikka masala

Time: 50 minutes

Serves: 4-6

Ingredients

headius

diff --git a/core/src/main/java/org/jruby/parser/StaticScope.java b/core/src/main/java/org/jruby/parser/StaticScope.java
index 66c9b71c61..32c644f730 100644
--- a/core/src/main/java/org/jruby/parser/StaticScope.java
+++ b/core/src/main/java/org/jruby/parser/StaticScope.java
@@ -37,6 +37,7 @@ import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
+import java.util.Map;
 import java.util.function.BiConsumer;

headius

Code:

def foo
  <<~Q
  Qend

JRuby:

headius

diff --git a/lib/parser/lexer.rl b/lib/parser/lexer.rl
index e477b06..88efafc 100644
--- a/lib/parser/lexer.rl
+++ b/lib/parser/lexer.rl
@@ -445,6 +445,60 @@ class Parser::Lexer
     # Ruby >= 32, regexp, exceptional case
     !literal.regexp?
   end
+  
+  def current_literal_munge_escape(current_literal)

headius

system ~/projects/jruby-1.7 $ pickjdk 5
New JDK: jdk1.7.0_45.jdk

system ~/projects/jruby-1.7 $ time jruby -J-Djava.security.egd=file:/dev/random securerandom_bench.rb 

real	0m4.899s
user	0m26.660s
sys	0m0.361s

system ~/projects/jruby-1.7 $ time jruby -J-Djava.security.egd=/dev/random securerandom_bench.rb 

headius

# cat test.rb                                               
class Foo
  def bar
    puts 'hello, android'
  end
end
Foo.new.bar
# dalvikvm -classpath ruboto.jar org.jruby.Main -X-C test.rb
hello, android
# dalvikvm -classpath ruboto.jar org.jruby.Main -X-C -e "require 'java'; puts java.lang.System.properties"