+++ /dev/null
-/* Java bindings of the s4u::VirtualMachine */
-
-/* Copyright (c) 2006-2017. The SimGrid Team. All rights 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;
-
-public class VM extends Host {
- // No need to declare a new bind variable: we use the one inherited from the super class Host
-
- private Host currentHost;
-
- /** Create a `basic' VM (i.e. 1GB of RAM, other values are not taken into account). */
- public VM(Host host, String name) {
- this(host,name,1024, 0, 0);
- }
-
- /**
- * Create a VM
- * @param host Host node
- * @param name name of the machine
- * @param ramSize size of the RAM that should be allocated (in MBytes)
- * @param migNetSpeed (network bandwith allocated for migrations in MB/s, if you don't know put zero ;))
- * @param dpIntensity (dirty page percentage according to migNetSpeed, [0-100], if you don't know put zero ;))
- */
- public VM(Host host, String name, int ramSize, int migNetSpeed, int dpIntensity){
- super();
- super.name = name;
- this.currentHost = host;
- create(host, name, ramSize, migNetSpeed, dpIntensity);
- }
-
- /** Retrieve the list of all existing VMs */
- public native static VM[] all();
-
- /** Retrieve a VM from its name */
- public native static VM getVMByName(String name);
-
- /** Shutdown and unref the VM.
- *
- * Actually, this strictly equivalent to shutdown().
- * In C and in libvirt, the destroy function also releases the memory associated to the VM,
- * but this is not the way it goes in Java. The VM will only get destroyed by the garbage
- * collector when it is not referenced anymore by your variables. So, to see the VM really
- * destroyed, don't call this function but simply release any ref you have on it.
- */
- public void destroy() {
- shutdown();
- }
-
- /* Make sure that the GC also destroys the C object */
- protected void finalize() throws Throwable {
- nativeFinalize();
- }
- private native void nativeFinalize();
-
- /** Returns whether the given VM is currently suspended */
- public native int isCreated();
-
- /** Returns whether the given VM is currently running */
- public native int isRunning();
-
- /** Returns whether the given VM is currently running */
- public native int isMigrating();
-
- /** Returns whether the given VM is currently suspended */
- public native int isSuspended();
-
- /**
- * Natively implemented method create the VM.
- * @param ramSize size of the RAM that should be allocated (in MB)
- * @param migNetSpeed (network bandwith allocated for migrations in MB/s, if you don't know put zero ;))
- * @param dpIntensity (dirty page intensity, a percentage of migNetSpeed [0-100], if you don't know put zero ;))
- */
- private native void create(Host host, String name, int ramSize, int migNetSpeed, int dpIntensity);
-
-
- /**
- * Set a CPU bound for a given VM.
- * @param bound in flops/s
- */
- public native void setBound(double bound);
-
- /** start the VM */
- public native void start();
-
-
- /**
- * Immediately kills all processes within the given VM.
- *
- * No extra delay occurs. If you want to simulate this too, you want to use a MSG_process_sleep()
- */
- public native void shutdown();
-
- /** Change the host on which all processes are running
- * (pre-copy is implemented)
- */
- public void migrate(Host destination) throws HostFailureException{
- try {
- this.nativeMigration(destination);
- } catch (Exception e){
- Msg.info("Migration of VM "+this.getName()+" to "+destination.getName()+" is impossible ("+e.getMessage()+")");
- throw new HostFailureException();
- }
- // If the migration correcly returned, then we should change the currentHost value.
- this.currentHost = destination;
- }
- private native void nativeMigration(Host destination) throws Exception;
-
- /** Immediately suspend the execution of all processes within the given VM
- *
- * No suspension cost occurs. If you want to simulate this too, you want to
- * use a \ref File.write() before or after, depending on the exact semantic
- * of VM suspend to you.
- */
- public native void suspend();
-
- /** Immediately resumes the execution of all processes within the given VM
- *
- * No resume cost occurs. If you want to simulate this too, you want to
- * use a \ref File.read() before or after, depending on the exact semantic
- * of VM resume to you.
- */
- public native void resume();
-
- /** Class initializer (for JNI), don't do it yourself */
- private static native void nativeInit();
- static {
- nativeInit();
- }
-}
