/*
- * JNI interface to Cloud interface in Simgrid
+ * JNI interface to virtual machine in Simgrid
*
* Copyright (c) 2006-2013. The SimGrid Team.
* All right reserved.
import org.simgrid.msg.Host;
import org.simgrid.msg.Process;
-public class VM {
- /**
- * This attribute represents a bind between a java task object and
- * a native task. Even if this attribute is public you must never
- * access to it. It is set automatically during the build of the object.
- */
- private long bind = 0;
+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 int coreAmount;
- private String name;
+ 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 new empty VM.
- * NOTE: it is expected that in the future, the coreAmount parameter will be used
- * to add extra constraints on the execution, but the argument is ignored for now.
+ * 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 coreAmount) {
- this.coreAmount = coreAmount;
- this.name = name;
- start(host,name,coreAmount);
+
+ 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;
}
protected void finalize() {
destroy();
}
- /**
- * Destroy the VM
- */
- protected native void destroy();
- /**
- * Natively implemented method starting the VM.
- * @param coreAmount
- */
- private native void start(Host host, String name, int coreAmount);
-
+
+
+ /* JNI / Native code */
+
+ /* get/set property methods are inherited from the Host class. */
+
/** Returns whether the given VM is currently suspended
*/
- public native boolean isSuspended();
+ public native int isCreated();
+
/** Returns whether the given VM is currently running
*/
- public native boolean isRunning();
- /** Add the given process into the VM.
- * Afterward, when the VM is migrated or suspended or whatever, the process will have the corresponding handling, too.
- */
- public native void bind(Process process);
- /** Removes the given process from the given VM, and kill it
- * Will raise a ProcessNotFound exception if the process were not bound to that VM
+ 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 void unbind(Process process);
- /** 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.
+ 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);
+
+
+ /** Change the host on which all processes are running
+ * (pre-copy is implemented)
*/
- public native void migrate(Host destination);
+ public void migrate(Host destination){
+ this.internalmig(destination);
+ 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 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
+
+ /** 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 shutdown();
+ public native void restore();
+
+
/**
- * Reboot the VM, restarting all the processes in it.
+ * Destroy the VM
*/
- public native void reboot();
+ public native void destroy();
- public String getName() {
- return name;
- }
+
/**
* Class initializer, to initialize various JNI stuff
