X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/d0ffc37686edcc803601f76ab51fdfed5fc2f241..28c048989504fa2c1f890d9a91784065e32de37d:/src/bindings/java/org/simgrid/msg/VM.java diff --git a/src/bindings/java/org/simgrid/msg/VM.java b/src/bindings/java/org/simgrid/msg/VM.java index 5c9c8e333a..f025de2a2f 100644 --- a/src/bindings/java/org/simgrid/msg/VM.java +++ b/src/bindings/java/org/simgrid/msg/VM.java @@ -1,73 +1,163 @@ -/* - * JNI interface to Cloud interface in Simgrid - * - * Copyright (c) 2006-2013. 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. - */ +/* 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; +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 -import org.simgrid.msg.Host; -import org.simgrid.msg.Process; -public class VM { + private static ArrayList vms= new ArrayList<>(); + private Host currentHost; + + /* Constructors / destructors */ /** - * 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. + * Create a `basic' VM (i.e. 1 core, 1GB of RAM, other values are not taken into account). */ - private long bind = 0; - - private int coreAmount; + public VM(Host host, String name) { + this(host,name,1,1024, -1, null, -1,0 , 0); + } - private String name; /** - * 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); + vms.add(this); } - protected void finalize() { - destroy(); + + public static VM[] all(){ + VM[] allvms = new VM[vms.size()]; + vms.toArray(allvms); + return allvms; } - /** - * 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); - + + 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 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); + + + /** + * 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(); + + /** + * 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 @@ -75,6 +165,7 @@ public class VM { * 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 @@ -82,19 +173,26 @@ public class VM { * 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 - */ - public native void shutdown(); - /** - * Reboot the VM, restarting all the processes in it. + + /** 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 reboot(); + public native void restore(); - public String getName() { - return name; - } /** * Class initializer, to initialize various JNI stuff