+++ /dev/null
-/* JNI interface to virtual machine in Simgrid */
-
-/* Copyright (c) 2006-2014. 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{
- // Please note that we are not declaring a new bind variable
- //(the bind variable has been inherited from the super class Host)
-
- /* Static functions */
- // GetByName is inherited from the super class Host
-
-
- private static VM[] vms=null;
- private Host currentHost;
-
- /* Constructors / destructors */
- /**
- * Create a `basic' VM (i.e. 1 core, 1GB of RAM, other values are not taken into account).
- */
- public VM(Host host, String name) {
- this(host,name,1,1024, -1, null, -1,0 , 0);
- }
-
- /**
- * Create a VM
- * @param host Host node
- * @param name name of the machine
- * @param nCore number of core
- * @param ramSize size of the RAM that should be allocated (in MBytes)
- * @param netCap (not used for the moment)
- * @param diskPath (not used for the moment)
- * @param diskSize (not used for the moment)
- * @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 nCore, int ramSize,
- int netCap, String diskPath, int diskSize, int migNetSpeed, int dpIntensity){
- super();
- super.name = name;
- this.currentHost = host;
- create(host, name, nCore, ramSize, netCap, diskPath, diskSize, migNetSpeed, dpIntensity);
- VM.addVM(this);
- }
-
- private static void addVM(VM vm){
- VM[] vmsN=null;
- int i=0;
- if(VM.vms == null)
- vmsN = new VM[1];
- else
- vmsN = new VM[vms.length+1];
-
- for (i=0; i<vmsN.length-1 ; i ++){
- vmsN[i]=vms[i];
- }
- vmsN[i]=vm;
- vms=vmsN;
- }
- public static VM[] all(){
- return vms;
- }
- public static VM getVMByName(String name){
- for (int i=0 ; i < vms.length ; i++){
- if (vms[i].getName().equals(name))
- return vms[i];
- }
- return null;
- }
- @Override
- protected void finalize() {
- try {
- nativeFinalize();
- } catch (Throwable e) {
- e.printStackTrace();
- }
- }
-
-
- /* JNI / Native code */
-
- /* get/set property methods are inherited from the Host class. */
-
- /** 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();
-
- /** Returns whether the given VM is currently saving
- */
- public native int isSaving();
-
- /** Returns whether the given VM is currently saved
- */
- public native int isSaved();
-
- /** Returns whether the given VM is currently restoring its state
- */
- public native boolean isRestoring();
-
- /**
- * Natively implemented method create the VM.
- * @param nCore number of core
- * @param ramSize size of the RAM that should be allocated (in MB)
- * @param netCap (not used for the moment)
- * @param diskPath (not used for the moment)
- * @param diskSize (not used for the moment)
- * @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 nCore, int ramSize,
- int netCap, String diskPath, int diskSize, int migNetSpeed, int dpIntensity);
-
-
- /**
- * Bound the VM to a certain % of its vcpu capability (e.g. 75% of vm.getSpeed())
- * @param load percentage (between [0,100]
- */
- public native void setBound(int load);
-
- /**
- * start the VM
- */
- public native void start();
-
-
- /**
- * Immediately kills all processes within the given VM. Any memory that they allocated will be leaked.
- * No extra delay occurs. If you want to simulate this too, you want to use a MSG_process_sleep() or something
- */
- public native void shutdown();
-
- /**
- * Invoke native migration routine
- */
- public native void internalmig(Host destination) throws Exception; // TODO add throws DoubleMigrationException (i.e. when you call migrate on a VM that is already migrating);
-
-
-
- /** Change the host on which all processes are running
- * (pre-copy is implemented)
- */
- public void migrate(Host destination) throws HostFailureException{
- try {
- this.internalmig(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;
- }
-
- /** 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();
-
- /** Immediately suspend the execution of all processes within the given VM
- * and save its state on the persistent HDD
- * Not yet implemented (for the moment it behaves like suspend)
- * 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 save();
-
- /** Immediately resumes the execution of all processes previously saved
- * within the given VM
- * Not yet implemented (for the moment it behaves like resume)
- *
- * 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 restore();
-
-
- private native void nativeFinalize();
-
-
-
- /**
- * Class initializer, to initialize various JNI stuff
- */
- public static native void nativeInit();
- static {
- nativeInit();
- }
-}
