/*
- * $Id$
- *
- * Copyright 2006,2007 Martin Quinson, Malek Cherier
+ * 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.
+ * (GNU LGPL) which comes with this package.
*/
package org.simgrid.msg;
import java.util.Arrays;
-import java.util.Hashtable;
import java.util.Vector;
-import java.lang.Runnable;
-import java.util.concurrent.Semaphore;
/**
* A process may be defined as a code, with some private data, executing
* a native process. Even if this attribute is public you must never
* access to it. It is set automatically during the build of the object.
*/
- public long bind;
-
+ private long bind;
+ /**
+ * Indicates if the process is started
+ */
+ boolean started;
/**
* Even if this attribute is public you must never access to it.
* It is used to compute the id of an MSG process.
*/
public static long nextProcessId = 0;
-
+
/**
* Even if this attribute is public you must never access to it.
* It is compute automatically during the creation of the object.
* The native functions use this identifier to synchronize the process.
*/
public long id;
-
- public Hashtable<String,String> properties;
-
+
+ /**
+ * Start time of the process
+ */
+ public double startTime = 0;
+ /**
+ * Kill time of the process
+ */
+ public double killTime = -1;
+
/**
* The name of the process.
*/
/** The arguments of the method function of the process. */
public Vector<String> args;
+
/**
* Default constructor (used in ApplicationHandler to initialize it)
this.name = null;
this.bind = 0;
this.args = new Vector<String>();
- this.properties = null;
}
* @param host The host of the process to create.
* @param name The name of the process.
* @param args The arguments of main method of the process.
+ */
+ public Process(Host host, String name, String[]args) {
+ this();
+ this.host = host;
+ if (name == null)
+ throw new NullPointerException("Process name cannot be NULL");
+ this.name = name;
+
+ this.args = new Vector<String>();
+ if (null != args)
+ this.args.addAll(Arrays.asList(args));
+ }
+ /**
+ * Constructs a new process from a host and his name, the arguments of here method function are
+ * specified by the parameter args.
+ *
+ * @param host The host of the process to create.
+ * @param name The name of the process.
+ * @param args The arguments of main method of the process.
+ * @param startTime Start time of the process
+ * @param killTime Kill time of the process
*
*/
- public Process(Host host, String name, String[]args) {
- /* This is the constructor called by all others */
+ public Process(Host host, String name, String[]args, double startTime, double killTime) {
this();
this.host = host;
if (name == null)
this.args = new Vector<String>();
if (null != args)
this.args.addAll(Arrays.asList(args));
-
- this.properties = new Hashtable<String,String>();
-
+
+ this.startTime = startTime;
+ this.killTime = killTime;
}
/**
* The natively implemented method to create an MSG process.
/**
* This method kill a process.
- * @param process the process to be killed.
*
*/
public native void kill();
/**
* Suspends the process by suspending the task on which it was
* waiting for the completion.
- *
*/
- public native void pause();
+ public native void suspend();
/**
- * Resumes a suspended process by resuming the task on which it was
+ * Suspends the process by suspending the task on which it was
* waiting for the completion.
- *
- *
- */
+ * DEPRECATED: use suspend instead.
+ */
+ @Deprecated
+ public void pause() {
+ suspend();
+ }
+ /**
+ * Sets the "auto-restart" flag of the process.
+ */
+ public native void setAutoRestart(boolean autoRestart);
+ /**
+ * Restarts the process from the beginning
+ */
public native void restart();
+ /**
+ * Resumes a suspended process by resuming the task on which it was
+ * waiting for the completion.
+ */
+ public native void resume();
/**
* Tests if a process is suspended.
*
public int getPPID() {
return ppid;
}
+ /**
+ * @brief Returns the value of a given process property.
+ */
+ public native String getProperty(String name);
+
+ /**
+ * Set the kill time of the process
+ * @param killTime the time when the process is killed
+ */
+ public native void setKillTime(double killTime);
+
/**
* This static method returns the currently running process.
*
* @param host The host where to migrate the process.
*
*/
- public native static void migrate(Process process, Host host);
+ public native void migrate(Host host);
/**
* Makes the current process sleep until millis millisecondes have elapsed.
* You should note that unlike "waitFor" which takes seconds, this method takes milliseconds.
* FIXME: Not optimal, maybe we should have two native functions.
* @param millis the length of time to sleep in milliseconds.
*/
- public static void sleep(long millis) {
+ public static void sleep(long millis) throws HostFailureException {
sleep(millis,0);
}
/**
* @param millis the length of time to sleep in milliseconds.
* @param nanos additionnal nanoseconds to sleep.
*/
- public native static void sleep(long millis, int nanos);
+ public native static void sleep(long millis, int nanos) throws HostFailureException;
/**
* Makes the current process sleep until time seconds have elapsed.
* @param seconds The time the current process must sleep.
*/
- public native void waitFor(double seconds);
+ public native void waitFor(double seconds) throws HostFailureException;
/**
*
*/
}
/**
* This method actually creates and run the process.
+ * It is a noop if the process is already launched.
* @throws HostNotFoundException
*/
- public void start() throws HostNotFoundException {
- create(host.getName());
+ public final void start() throws HostNotFoundException {
+ if (!started) {
+ started = true;
+ create(host.getName());
+ }
}
/**
Msg.info("Unexpected behavior. Stopping now");
System.exit(1);
}
- catch(ProcessKilledException pk) {
-
+ catch(ProcessKilledError pk) {
+
}
+ exit();
}
/**
*/
public abstract void main(String[]args) throws MsgException;
-
+ public native void exit();
/**
* Class initializer, to initialize various JNI stuff
*/
public static native void nativeInit();
static {
+ Msg.nativeInit();
nativeInit();
}
+ /**
+ * This static method returns the current amount of processes running
+ *
+ * @return The count of the running processes
+ */
+ public native static int getCount();
+
}
