/*
 * Copyright (c) 2018, 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * The Universal Permissive License (UPL), Version 1.0
 *
 * Subject to the condition set forth below, permission is hereby granted to any
 * person obtaining a copy of this software, associated documentation and/or
 * data (collectively the "Software"), free of charge and under any and all
 * copyright rights in the Software, and any and all patent rights owned or
 * freely licensable by each licensor hereunder covering either (i) the
 * unmodified Software as contributed to or provided by such licensor, or (ii)
 * the Larger Works (as defined below), to deal in both
 *
 * (a) the Software, and
 *
 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
 * one is included with the Software each a "Larger Work" to which the Software
 * is contributed by such licensors),
 *
 * without restriction, including without limitation the rights to copy, create
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 * use, sell, offer for sale, import, export, have made, and have sold the
 * Software and the Larger Work(s), and to sublicense the foregoing rights on
 * either these or other terms.
 *
 * This license is subject to the following condition:
 *
 * The above copyright notice and either this complete permission notice or at a
 * minimum a reference to the UPL must be included in all copies or substantial
 * portions of the Software.
 *
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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package com.oracle.truffle.trufflenode;

import java.util.Collections;
import java.util.HashSet;
import java.util.Set;

import com.oracle.truffle.js.runtime.JSAgent;

public class NodeJSAgent extends JSAgent {
    // The set of active agents, i.e., agents that entered an isolate
    private static final Set<NodeJSAgent> agents = Collections.synchronizedSet(new HashSet<>());
    private Thread thread;

    NodeJSAgent() {
        super(true);
    }

    void setThread(Thread thread) {
        this.thread = thread;
        if (thread == null) {
            agents.remove(this);
        } else {
            agents.add(this);
        }
    }

    Thread getThread() {
        return thread;
    }

    @Override
    public void wakeAgent(int w) {
        synchronized (agents) {
            for (NodeJSAgent agent : agents) {
                if (agent.getSignifier() == w) {
                    agent.thread.interrupt();
                    break;
                }
            }
        }
    }

    @Override
    public boolean isTerminated() {
        throw new UnsupportedOperationException();
    }

    @Override
    public void terminate(int timeout) {
        throw new UnsupportedOperationException();
    }

}