+++ /dev/null
-/*
- * Bindings to the MSG hosts
- *
- * Copyright 2006-2012 The SimGrid Team
- * All right reserved.
- *
- * This program is free software; you can redistribute
- * it and/or modify it under the terms of the license
- *(GNU LGPL) which comes with this package.
- *
- */
-package org.simgrid.msg;
-
-/**
- * A host object represents a location (any possible place) where a process may run.
- * Thus it is represented as a physical resource with computing capabilities, some
- * mailboxes to enable running process to communicate with remote ones, and some private
- * data that can be only accessed by local process. An instance of this class is always
- * binded with the corresponding native host. All the native hosts are automatically created
- * during the call of the method Msg.createEnvironment(). This method take as parameter a
- * platform file which describes all elements of the platform (host, link, root..).
- * You cannot create a host yourself.
- *
- * The best way to get an host instance is to call the static method
- * Host.getByName().
- *
- * For example to get the instance of the host. If your platform
- * file description contains an host named "Jacquelin" :
- *
- * \verbatim
-Host jacquelin;
-
-try {
- jacquelin = Host.getByName("Jacquelin");
-} catch(HostNotFoundException e) {
- System.err.println(e.toString());
-}
-...
-\endverbatim
- *
- */
-public class Host {
-
- /**
- * This attribute represents a bind between a java host object and
- * a native host. Even if this attribute is public you must never
- * access to it. It is set automatically during the call of the
- * static method Host.getByName().
- *
- * @see Host.getByName().
- */
- private long bind;
- /**
- * Host name
- */
- private String name;
-
- /**
- * User data.
- */
- private Object data;
- /**
- *
- */
- protected Host() {
- this.bind = 0;
- this.data = null;
- };
-
- /**
- * This static method gets an host instance associated with a native
- * host of your platform. This is the best way to get a java host object.
- *
- * @param name The name of the host to get.
- *
- * @return
- * @exception HostNotFoundException if the name of the host is not valid.
- * NativeException if the native version of this method failed.
- */
- public native static Host getByName(String name)
- throws HostNotFoundException, NullPointerException;
- /**
- * This static method returns the count of the installed hosts.
- *
- * @return The count of the installed hosts.
- */
- public native static int getCount();
-
- /**
- * This static method return an instance to the host of the current process.
- *
- * @return The host on which the current process is executed.
- */
- public native static Host currentHost();
-
- /**
- * This static method returns all of the hosts of the installed platform.
- *
- * @return An array containing all the hosts installed.
- *
- */
- public native static Host[] all();
-
- /**
- * This method returns the name of a host.
- * @return The name of the host.
- *
- */
- public String getName() {
- return name;
- }
- /**
- * Sets the data of the host.
- * @param data
- */
- public void setData(Object data) {
- this.data = data;
- }
- /**
- * Gets the d ata of the host.
- *
- * @return
- */
- public Object getData() {
- return this.data;
- }
-
- /**
- * Checks whether a host has data.
- *
- * @return
- */
- public boolean hasData() {
- return null != this.data;
- }
-
- /**
- * This method returns the number of tasks currently running on a host.
- * The external load is not taken in account.
- *
- * @return The number of tasks currently running on a host.
- */
- public native int getLoad();
-
- /**
- * This method returns the speed of the processor of a host,
- * regardless of the current load of the machine.
- *
- * @return The speed of the processor of the host in flops.
- *
- */
- public native double getSpeed();
- /**
- * @brief Returns the value of a given host property.
- */
- public native String getProperty(String name);
- /**
- * @brief Change the value of a given host property.
- */
- public native void setProperty(String name, String value);
- /** This method tests if a host is avail.
- * @return
- */
- public native boolean isAvail();
-
- /**
- * Class initializer, to initialize various JNI stuff
- */
- public static native void nativeInit();
- static {
- nativeInit();
- }
-}
