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 * Version: CPL 1.0/GPL 2.0/LGPL 2.1
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 * The contents of this file are subject to the Common Public
 * License Version 1.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
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 *
 * Software distributed under the License is distributed on an "AS
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 * either of the GNU General Public License Version 2 or later (the "GPL"),
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 * in which case the provisions of the GPL or the LGPL are applicable instead
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package org.jruby.runtime.profile;

import org.jruby.util.collections.IntHashMap;

public class Invocation {
    private final int methodSerialNumber;
    private int recursiveDepth;
    private Invocation parent;
    private final IntHashMap children;
    
    private long duration     = 0;
    private int count         = 0;
    
    public Invocation(int serial) {
        this(null, serial);
    }
    
    public Invocation(Invocation parent, int serial) {
        this.parent             = parent;
        this.methodSerialNumber = serial;
        this.children           = new IntHashMap();
    }

    public Invocation(Invocation parent, int serial, IntHashMap children) {
        this.parent             = parent;
        this.methodSerialNumber = serial;
        this.children           = children;
    }

    public int getMethodSerialNumber() {
        return methodSerialNumber;
    }

    public int getRecursiveDepth() {
        return recursiveDepth;
    }
    
    public void setRecursiveDepth(int d) {
        recursiveDepth = d;
    }

    public Invocation getParent() {
        return parent;
    }
    
    public void setParent(Invocation p) {
        parent = p;
    }

    public IntHashMap getChildren() {
        return children;
    }

    public long getDuration() {
        return duration;
    }

    public void setDuration(long d) {
        duration = d;
    }

    public void addDuration(long d) {
        duration += d;
    }
    
    public int getCount() {
        return count;
    }

    public void setCount(int c) {
        count = c;
    }

    public void incrementCount() {
        count++;
    }

    public Invocation childInvocationFor(int serial) {
        Invocation child;
        if ((child = children.get(serial)) == null) {
            child = new Invocation(this, serial);
            children.put(serial, child);
        }
        return child;
    }
    
    public Invocation copyWithNewSerialAndParent(int serial, Invocation newParent) {
        Invocation newInv = new Invocation(newParent, serial, children);
        newInv.setDuration(duration);
        newInv.setCount(count);
        newInv.setRecursiveDepth(recursiveDepth);
        for (Invocation child : children.values()) {
            child.setParent(newInv);
        }
        return newInv;
    }

    public void addChild(Invocation child) {
        children.put(child.getMethodSerialNumber(), child);
    }
    
    public long childTime() {
        long t = 0;
        for (Invocation inv : children.values()) {
            t += inv.getDuration();
        }
        return t;
    }
    
    public long selfTime() {
        return duration - childTime();
    }
}