gridsimcore.java

一个非常著名的网格模拟器,能够运行网格调度算法!

     * Check type of entity
     * @return true if entity has NETWORK communication channel, otherwise
     *          it returns false
     * @deprecated As of GridSim 2.1, replaced by {@link #isNetworked()}
     * @pre $none
     * @post $result == true || false
     */
    protected boolean IsNetworked() {
        return isNetworked();
    }

    /**
     * Check type of entity
     * @return true if entity has NETWORK communication channel, otherwise
     *          it returns false
     * @pre $none
     * @post $result == true || false
     */
    protected boolean isNetworked() {
        return networkedFlag_;
    }


    /**
     * Sends an event/message to another entity by <tt>delaying</tt>
     * the simulation time
     * from the current time, with a tag representing the event type.
     * <p>
     * It is <tt>recommended</tt> to use <tt>send()</tt> method with
     * an output port if the network bandwidth plays an important role in
     * this simulation. However, the entity must have the network entities, i.e.
     * <tt>Input</tt> and <tt>Output</tt> port (specified during the creation
     * of the entity by giving a baud rate or bandwidth speed).
     * Below is an example on how to do:
     * <p>
     * <code>
     * ... // other code <br>
     * // object is the entity or message you want to send <br>
     * // size is the object size in bytes (rough estimation) <br>
     * // destination id is the entity ID you want to send the object to <br>
     * IO_data data = new IO_data(object, size, destinationID); <br>
     * <br> <br>
     * // If this entity extends from GridSim class, then you should use it <br>
     * // otherwise need to create a new <tt>Sim_port</tt> object <br>
     * Sim_port port = super.output; <br> <br>
     * // delay is the simulation time delay <br>
     * // tag is the event type (user-defined or choose one from
     *    <tt>GridSimTags</tt> class)<br>
     * send(port, delay, tag, data);<br>
     * ... // remaining other code <br>
     * </code>
     *
     * @param entityName the name of the destination entity
     * @param delay      how long from the current simulation time the event
     *                   should be sent.
     *                   If delay is a negative number, then it will be
     *                   changed to 0.0
     * @param gridSimTag an user-defined number representing the type of
     *                   an event/message
     * @deprecated As of GridSim 2.1, replaced by {@link #send(String, double,
     *             int)}
     * @pre entityName != null
     * @pre delay >= 0.0
     * @post $none
     */
    protected void Send(String entityName, double delay, int gridSimTag) {
        send(entityName, delay, gridSimTag);
    }

    /**
     * Sends an event/message to another entity by <tt>delaying</tt>
     * the simulation time
     * from the current time, with a tag representing the event type.
     * <p>
     * It is <tt>recommended</tt> to use <tt>send()</tt> method with
     * an output port if the network bandwidth plays an important role in
     * this simulation. However, the entity must have the network entities, i.e.
     * <tt>Input</tt> and <tt>Output</tt> port (specified during the creation
     * of the entity by giving a baud rate or bandwidth speed).
     * Below is an example on how to do:
     * <p>
     * <code>
     * ... // other code <br>
     * // object is the entity or message you want to send <br>
     * // size is the object size in bytes (rough estimation) <br>
     * // destination id is the entity ID you want to send the object to <br>
     * IO_data data = new IO_data(object, size, destinationID); <br>
     * <br> <br>
     * // If this entity extends from GridSim class, then you should use it <br>
     * // otherwise need to create a new <tt>Sim_port</tt> object <br>
     * Sim_port port = super.output; <br> <br>
     * // delay is the simulation time delay <br>
     * // tag is the event type (user-defined or choose one from
     *    <tt>GridSimTags</tt> class)<br>
     * send(port, delay, tag, data);<br>
     * ... // remaining other code <br>
     * </code>
     *
     * @param entityName the name of the destination entity
     * @param delay      how long from the current simulation time the event
     *                   should be sent.
     *                   If delay is a negative number, then it will be
     *                   changed to 0.0
     * @param gridSimTag an user-defined number representing the type of
     *                   an event/message
     * @pre entityName != null
     * @pre delay >= 0.0
     * @post $none
     */
    protected void send(String entityName, double delay, int gridSimTag)
    {
        if (entityName == null) {
            return;
        }

        // if delay is -ve, then it doesn't make sense. So resets to 0.0
        if (delay < 0.0) {
            delay = 0.0;
        }

        int id = GridSim.getEntityId(entityName);
        if (id < 0)
        {
            System.out.println(super.get_name() + ".send(): Error - " +
                "invalid entity name \"" + entityName + "\".");
            return;
        }

        super.sim_schedule(id, delay, gridSimTag);
    }

    /**
     * Sends an event/message to another entity by <tt>delaying</tt>
     * the simulation time
     * from the current time, with a tag representing the event type.
     * <p>
     * It is <tt>recommended</tt> to use <tt>send()</tt> method with
     * an output port if the network bandwidth plays an important role in
     * this simulation. However, the entity must have the network entities, i.e.
     * <tt>Input</tt> and <tt>Output</tt> port (specified during the creation
     * of the entity by giving a baud rate or bandwidth speed).
     * Below is an example on how to do:
     * <p>
     * <code>
     * ... // other code <br>
     * // object is the entity or message you want to send <br>
     * // size is the object size in bytes (rough estimation) <br>
     * // destination id is the entity ID you want to send the object to <br>
     * IO_data data = new IO_data(object, size, destinationID); <br>
     * <br> <br>
     * // If this entity extends from GridSim class, then you should use it <br>
     * // otherwise need to create a new <tt>Sim_port</tt> object <br>
     * Sim_port port = super.output; <br> <br>
     * // delay is the simulation time delay <br>
     * // tag is the event type (user-defined or choose one from
     *    <tt>GridSimTags</tt> class)<br>
     * send(port, delay, tag, data);<br>
     * ... // remaining other code <br>
     * </code>
     *
     * @param entityName the name of the destination entity
     * @param delay      how long from the current simulation time the event
     *                   should be sent.
     *                   If delay is a negative number, then it will be
     *                   changed to 0.0
     * @param gridSimTag an user-defined number representing the type of
     *                   an event/message
     * @param data       A reference to data to be sent with the event
     * @deprecated As of GridSim 2.1, replaced by {@link #send(String, double,
     *             int, Object)}
     * @pre entityName != null
     * @pre delay >= 0.0
     * @pre data != null
     * @post $none
     */
    protected void Send(String entityName, double delay, int gridSimTag,
                        Object data)
    {
        send(entityName, delay, gridSimTag, data);
    }

    /**
     * Sends an event/message to another entity by <tt>delaying</tt>
     * the simulation time
     * from the current time, with a tag representing the event type.
     * <p>
     * It is <tt>recommended</tt> to use <tt>send()</tt> method with
     * an output port if the network bandwidth plays an important role in
     * this simulation. However, the entity must have the network entities, i.e.
     * <tt>Input</tt> and <tt>Output</tt> port (specified during the creation
     * of the entity by giving a baud rate or bandwidth speed).
     * Below is an example on how to do:
     * <p>
     * <code>
     * ... // other code <br>
     * // object is the entity or message you want to send <br>
     * // size is the object size in bytes (rough estimation) <br>
     * // destination id is the entity ID you want to send the object to <br>
     * IO_data data = new IO_data(object, size, destinationID); <br>
     * <br> <br>
     * // If this entity extends from GridSim class, then you should use it <br>
     * // otherwise need to create a new <tt>Sim_port</tt> object <br>
     * Sim_port port = super.output; <br> <br>
     * // delay is the simulation time delay <br>
     * // tag is the event type (user-defined or choose one from
     *    <tt>GridSimTags</tt> class)<br>
     * send(port, delay, tag, data);<br>
     * ... // remaining other code <br>
     * </code>
     *
     * @param entityName the name of the destination entity
     * @param delay      how long from the current simulation time the event
     *                   should be sent.
     *                   If delay is a negative number, then it will be
     *                   changed to 0.0
     * @param gridSimTag an user-defined number representing the type of
     *                   an event/message
     * @param data       A reference to data to be sent with the event
     * @pre entityName != null
     * @pre delay >= 0.0
     * @pre data != null
     * @post $none
     */
    protected void send(String entityName, double delay, int gridSimTag,
                        Object data)
    {
        if (entityName == null) {
            return;
        }

        // if delay is -ve, then it doesn't make sense. So resets to 0.0
        if (delay < 0.0) {
            delay = 0.0;
        }

        int id = GridSim.getEntityId(entityName);
        if (id < 0)
        {
            System.out.println(super.get_name() + ".send(): Error - " +
                "invalid entity name \"" + entityName + "\".");
            return;
        }

        super.sim_schedule(id, delay, gridSimTag, data);
    }

    /**
     * Sends an event/message to another entity by <tt>delaying</tt>
     * the simulation time
     * from the current time, with a tag representing the event type.
     * <p>
     * It is <tt>recommended</tt> to use <tt>send()</tt> method with
     * an output port if the network bandwidth plays an important role in
     * this simulation. However, the entity must have the network entities, i.e.
     * <tt>Input</tt> and <tt>Output</tt> port (specified during the creation
     * of the entity by giving a baud rate or bandwidth speed).
     * Below is an example on how to do:
     * <p>
     * <code>
     * ... // other code <br>
     * // object is the entity or message you want to send <br>
     * // size is the object size in bytes (rough estimation) <br>
     * // destination id is the entity ID you want to send the object to <br>
     * IO_data data = new IO_data(object, size, destinationID); <br>
     * <br> <br>
     * // If this entity extends from GridSim class, then you should use it <br>
     * // otherwise need to create a new <tt>Sim_port</tt> object <br>
     * Sim_port port = super.output; <br> <br>
     * // delay is the simulation time delay <br>
     * // tag is the event type (user-defined or choose one from
     *    <tt>GridSimTags</tt> class)<br>
     * send(port, delay, tag, data);<br>
     * ... // remaining other code <br>
     * </code>
     *
     * @param entityID   the id number of the destination entity
     * @param delay      how long from the current simulation time the event
     *                   should be sent.
     *                   If delay is a negative number, then it will be
     *                   changed to 0.0
     * @param gridSimTag an user-defined number representing the type of
     *                   an event/message
     * @deprecated As of GridSim 2.1, replaced by {@link #send(int, double,
     *             int)}
     * @pre entityID > 0
     * @pre delay >= 0.0
     * @post $none
     */
    protected void Send(int entityID, double delay, int gridSimTag) {
        send(entityID, delay, gridSimTag);
    }

    /**
     * Sends an event/message to another entity by <tt>delaying</tt>
     * the simulation time
     * from the current time, with a tag representing the event type.
     * <p>
     * It is <tt>recommended</tt> to use <tt>send()</tt> method with
     * an output port if the network bandwidth plays an important role in
     * this simulation. However, the entity must have the network entities, i.e.
     * <tt>Input</tt> and <tt>Output</tt> port (specified during the creation
     * of the entity by giving a baud rate or bandwidth speed).
     * Below is an example on how to do:
     * <p>
     * <code>
     * ... // other code <br>
     * // object is the entity or message you want to send <br>
     * // size is the object size in bytes (rough estimation) <br>
     * // destination id is the entity ID you want to send the object to <br>
     * IO_data data = new IO_data(object, size, destinationID); <br>
     * <br> <br>
     * // If this entity extends from GridSim class, then you should use it <br>
     * // otherwise need to create a new <tt>Sim_port</tt> object <br>
     * Sim_port port = super.output; <br> <br>
     * // delay is the simulation time delay <br>
     * // tag is the event type (user-defined or choose one from
     *    <tt>GridSimTags</tt> class)<br>
     * send(port, delay, tag, data);<br>
     * ... // remaining other code <br>
     * </code>
     *
     * @param entityID   the id number of the destination entity
     * @param delay      how long from the current simulation time the event
     *                   should be sent.
     *                   If delay is a negative number, then it will be
     *                   changed to 0.0
     * @param gridSimTag an user-defined number representing the type of
     *                   an event/message
     * @pre entityID > 0
     * @pre delay >= 0.0
     * @post $none
     */
    protected void send(int entityID, double delay, int gridSimTag)
    {
        if (entityID < 0) {
            return;
        }

        // if delay is -ve, then it doesn't make sense. So resets to 0.0
        if (delay < 0.0) {
            delay = 0.0;
        }