* under the terms of the license (GNU LGPL) which comes with this package. */
package org.simgrid.msg;
-
-import org.simgrid.msg.Host;
-import org.simgrid.msg.Process;
+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 VM[] vms=null;
- private Host currentHost;
+
+ 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) {
super.name = name;
this.currentHost = host;
create(host, name, nCore, ramSize, netCap, diskPath, diskSize, migNetSpeed, dpIntensity);
- VM.addVM(this);
+ vms.add(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[] all(){
+ VM[] allvms = new VM[vms.size()];
+ vms.toArray(allvms);
+ return allvms;
}
+
public static VM getVMByName(String name){
- for (int i=0 ; i < vms.length ; i++){
- if (vms[i].getName().equals(name))
- return vms[i];
+ for (VM vm : vms){
+ if (vm.getName().equals(name))
+ return vm;
}
return null;
}
- protected void finalize() {
- destroy();
- }
+ 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 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);
+ 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]
+ * Set a CPU bound for a given VM.
+ * @param bound in flops/s
*/
- public native void setBound(int load);
+ 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();
-
+
/**
* 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)
*/
// 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
- */
- public native void destroy();
-
-
/**
* Class initializer, to initialize various JNI stuff