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Example of JRuby 9k AOT without JVM bytecode compilation
[] ~/projects/jruby $ cat blah.rb
def foo
puts "hello"
end
foo
[] ~/projects/jruby $ jruby --dev -S jrubyc blah.rb
[] ~/projects/jruby $ javap -c -private blah
Compiled from "blah.rb"
public class blah {
private static final java.lang.String script_ir;
public static {};
Code:
0: new #11 // class java/lang/StringBuilder
3: dup
4: invokespecial #14 // Method java/lang/StringBuilder."<init>":()V
7: ldc #16 // String ÿÿÿÿ\tRtsRt_C0C\"foUS-ASCIISt(t\tRtsRt_OffÿÿÿÿÿCRt'zhelloUTF-8blah.rbputUS-ASCIIStt(tblah.rbÿÿÿÿÿÿÿ
foUS-ASCIIÿÿÿÿÿÿÿ;
9: invokevirtual #20 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
12: invokevirtual #24 // Method java/lang/Object.toString:()Ljava/lang/String;
15: putstatic #26 // Field script_ir:Ljava/lang/String;
18: return
public static void main(java.lang.String[]);
Code:
0: invokestatic #34 // Method org/jruby/Ruby.newInstance:()Lorg/jruby/Ruby;
3: astore_1
4: aload_1
5: aload_1
6: getstatic #26 // Field script_ir:Ljava/lang/String;
9: ldc #36 // String ISO-8859-1
11: invokevirtual #42 // Method java/lang/String.getBytes:(Ljava/lang/String;)[B
14: ldc #43 // String blah.rb
16: invokestatic #49 // Method org/jruby/ir/runtime/IRRuntimeHelpers.decodeScopeFromBytes:(Lorg/jruby/Ruby;[BLjava/lang/String;)Lorg/jruby/ir/IRScope;
19: invokevirtual #53 // Method org/jruby/Ruby.runInterpreter:(Lorg/jruby/ParseResult;)Lorg/jruby/runtime/builtin/IRubyObject;
22: return
public static org.jruby.ir.IRScope loadIR(org.jruby.Ruby, java.lang.String);
Code:
0: aload_0
1: getstatic #26 // Field script_ir:Ljava/lang/String;
4: ldc #36 // String ISO-8859-1
6: invokevirtual #42 // Method java/lang/String.getBytes:(Ljava/lang/String;)[B
9: aload_1
10: invokestatic #49 // Method org/jruby/ir/runtime/IRRuntimeHelpers.decodeScopeFromBytes:(Lorg/jruby/Ruby;[BLjava/lang/String;)Lorg/jruby/ir/IRScope;
13: areturn
}
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