package org.simgrid.msg;
-import org.simgrid.msg.Host;
-import org.simgrid.msg.Process;
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 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) {
private static void addVM(VM vm){
VM[] vmsN=null;
- int i=0;
+ 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(){
+ 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];
+ if (vms[i].getName().equals(name))
+ return vms[i];
}
return null;
}
protected void finalize() {
destroy();
}
-
+
/* 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);
/**
*/
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)
*/
try {
this.internalmig(destination);
} catch (Exception e){
- Msg.info("an exception occurs during the migration of VM "+this.getName());
- throw new HostFailureException();
+ Msg.info("an exception occurs during the migration of VM "+this.getName());
+ 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
*/
public native void destroy();
-
+
/**
* Class initializer, to initialize various JNI stuff
