org.jruby.internal.runtime.methods.DefaultMethod.erb Maven / Gradle / Ivy

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 *
 * Software distributed under the License is distributed on an "AS
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 * Copyright (C) 2004-2008 Thomas E Enebo 
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<%= generated_warning %>

package org.jruby.internal.runtime.methods;

import org.jruby.RubyModule;
import org.jruby.ast.ArgsNode;
import org.jruby.ast.Node;
import org.jruby.ast.executable.Script;
import org.jruby.internal.runtime.JumpTarget;
import org.jruby.lexer.yacc.ISourcePosition;
import org.jruby.parser.StaticScope;
import org.jruby.runtime.Arity;
import org.jruby.runtime.Block;
import org.jruby.runtime.PositionAware;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.Visibility;
import org.jruby.runtime.builtin.IRubyObject;

/**
 * This is the mixed-mode method type.  It will call out to JIT compiler to see if the compiler
 * wants to JIT or not.  If the JIT compiler does JIT this it will return the new method
 * to be executed here instead of executing the interpreted version of this method.  The next
 * invocation of the method will end up causing the runtime to load and execute the newly JIT'd
 * method.
 *
 */
public class DefaultMethod extends DynamicMethod implements JumpTarget, MethodArgs, PositionAware {
    private static class DynamicMethodBox {
        public DynamicMethod actualMethod;
        public int callCount = 0;
    }

    private DynamicMethodBox box = new DynamicMethodBox();
    private final StaticScope staticScope;
    private final Node body;
    private final ArgsNode argsNode;
    private final ISourcePosition position;
    private final InterpretedMethod interpretedMethod;

    public DefaultMethod(RubyModule implementationClass, StaticScope staticScope, Node body,
            ArgsNode argsNode, Visibility visibility, ISourcePosition position) {
        super(implementationClass, visibility, CallConfiguration.FrameFullScopeFull);
        this.interpretedMethod = new InterpretedMethod(implementationClass, staticScope, body, argsNode, visibility, position);
        this.box.actualMethod = interpretedMethod;
        this.argsNode = argsNode;
        this.body = body;
        this.staticScope = staticScope;
        this.position = position;

        assert argsNode != null;
    }

    public int getCallCount() {
        return box.callCount;
    }

    public int incrementCallCount() {
        return ++box.callCount;
    }

    public void setCallCount(int callCount) {
        this.box.callCount = callCount;
    }

    public Node getBodyNode() {
        return body;
    }

    public ArgsNode getArgsNode() {
        return argsNode;
    }

    public StaticScope getStaticScope() {
        return staticScope;
    }

    public DynamicMethod getMethodForCaching() {
        DynamicMethod method = box.actualMethod;
        if (method instanceof JittedMethod) {
            return method;
        }
        return this;
    }

    public void switchToJitted(Script jitCompiledScript, CallConfiguration jitCallConfig) {
        this.box.actualMethod = new JittedMethod(
                getImplementationClass(), staticScope, jitCompiledScript,
                jitCallConfig, getVisibility(), argsNode.getArity(), position,
                this);
        this.box.callCount = -1;
        getImplementationClass().invalidateCacheDescendants();
    }

    private DynamicMethod tryJitReturnMethod(ThreadContext context, String name) {
        context.getRuntime().getJITCompiler().tryJIT(this, context, name);
        return box.actualMethod;
    }

    @Override
    public IRubyObject call(ThreadContext context, IRubyObject self, RubyModule clazz, String name, IRubyObject[] args, Block block) {
        if (box.callCount >= 0) {
            return tryJitReturnMethod(context, name).call(context, self, clazz, name, args, block);
        }
        
        return box.actualMethod.call(context, self, clazz, name, args, block);
    }

    @Override
    public IRubyObject call(ThreadContext context, IRubyObject self, RubyModule clazz, String name, IRubyObject[] args) {
        if (box.callCount >= 0) {
            return tryJitReturnMethod(context, name).call(context, self, clazz, name, args);
        }

        return box.actualMethod.call(context, self, clazz, name, args);
    }

<%= generated_arities %>

    public ISourcePosition getPosition() {
        return position;
    }

    public String getFile() {
        return position.getFile();
    }

    public int getLine() {
        return position.getLine();
    }

    @Override
    public Arity getArity() {
        return argsNode.getArity();
    }

    public DynamicMethod dup() {
        DefaultMethod newMethod = new DefaultMethod(getImplementationClass(), staticScope, body, argsNode, getVisibility(), position);
        newMethod.setIsBuiltin(this.builtin);
        newMethod.box = this.box;
        return newMethod;
    }

    @Override
    public void setVisibility(Visibility visibility) {
        // We promote our box to being its own box since we're changing
        // visibilities, and need it to be reflected on this method object
        // independent of any other sharing the box.
        DynamicMethodBox newBox = new DynamicMethodBox();
        newBox.actualMethod = box.actualMethod.dup();
        newBox.callCount = box.callCount;
        box = newBox;
        super.setVisibility(visibility);
    }
}