-/*
- * JNI interface to virtual machine in Simgrid
- *
- * 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;
+/* JNI interface to virtual machine in Simgrid */
+
+/* Copyright (c) 2006-2014. The SimGrid Team.
+ * All rights reserved. */
-import org.simgrid.msg.Host;
-import org.simgrid.msg.Process;
+/* 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;
+import java.util.ArrayList;
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 ArrayList<VM> vms= new ArrayList<>();
+ 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*1024*1024, -1, null, -1);
+ this(host,name,1,1024, -1, null, -1,0 , 0);
}
/**
- * Create a `basic' VM (i.e. 1 core, 1GB of RAM, other values are not taken into account).
+ * 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, long ramSize,
- long netCap, String diskPath, long diskSize){
+ public VM(Host host, String name, int nCore, int ramSize,
+ int netCap, String diskPath, int diskSize, int migNetSpeed, int dpIntensity){
super();
super.name = name;
- create(host, name, nCore, ramSize, netCap, diskPath, diskSize);
+ this.currentHost = host;
+ create(host, name, nCore, ramSize, netCap, diskPath, diskSize, migNetSpeed, dpIntensity);
+ vms.add(this);
+ }
+
+ public static VM[] all(){
+ VM[] allvms = new VM[vms.size()];
+ vms.toArray(allvms);
+ return allvms;
}
- protected void finalize() {
- destroy();
+ public static VM getVMByName(String name){
+ for (VM vm : vms){
+ if (vm.getName().equals(name))
+ return vm;
+ }
+ return null;
}
+ public void destroy() {
+ try {
+ nativeFinalize();
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+ }
+ private native void nativeFinalize();
+
/* 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
+ * @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, long ramSize,
- long netCap, String diskPath, long diskSize);
-
+ private native void create(Host host, String name, int nCore, int ramSize,
+ int netCap, String diskPath, int diskSize, 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. 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();
-
-
- /** Immediately change the host on which all processes are running
- *
- * No migration cost occurs. If you want to simulate this too, you want to use a
- * Task.send() before or after, depending on whether you want to do cold or hot
- * migration.
+
+ /**
+ * 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 native void migrate(Host destination);
-
+ 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
* 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
* 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)
* 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)
* of VM resume to you.
*/
public native void restore();
-
- /**
- * Destroy the VM
- */
- protected native void destroy();
-
-
/**
* Class initializer, to initialize various JNI stuff