-/* Copyright (c) 2006-2014. The SimGrid Team.
- * All rights reserved. */
+/* Copyright (c) 2006-2018. 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. */
*/
private long bind = 0;
/** 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.
- */
- private 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.
- */
- private long id;
/** Time at which the process should be created */
protected double startTime = 0;
- /** Time at which the process should be killed.
- *
- * Set at creation, and used internally by SimGrid
- */
- private double killTime = -1;
+ /** Time at which the process should be killed */
+ private double killTime = -1; // Used from the C world
private String name = null;
private Host host = null;
/** The arguments of the method function of the process. */
- private ArrayList<String> args = new ArrayList<>();
+ private ArrayList<String> args_ = new ArrayList<>();
/**
* Constructs a new process from the name of a host and his name. The method
public Process(Host host, String name, String[]args)
{
if (host == null)
- throw new NullPointerException("Cannot create a process on the null host");
+ throw new IllegalArgumentException("Cannot create a process on the null host");
if (name == null)
- throw new NullPointerException("Process name cannot be null");
+ throw new IllegalArgumentException("Process name cannot be null");
- this.id = nextProcessId++;
this.host = host;
this.name = name;
- this.args = new ArrayList<>();
+ this.args_ = new ArrayList<>();
if (null != args)
- this.args.addAll(Arrays.asList(args));
+ this.args_.addAll(Arrays.asList(args));
}
/**
* Constructs a new process from a host and his name, the arguments of here method function are
this.killTime = killTime;
}
/**
- * The natively implemented method to create an MSG process.
- * @param hostName A valid (bound) host where create the process.
+ * The native method to create an MSG process.
+ * @param host where to create the process.
*/
- protected native void create(String hostName) throws HostNotFoundException;
+ protected native void create(Host host);
+
/**
* This method kills all running process of the simulation.
*
*
*/
public int getPID() {
+ if (pid == -1) // Don't traverse the JNI barrier if you already have the answer
+ pid = nativeGetPID();
return pid;
}
+ // This should not be used: the PID is supposed to be initialized from the C directly when the actor is created,
+ // but this sometimes fail, so let's play nasty but safe here.
+ private native int nativeGetPID();
/**
* This method returns the PID of the parent of a process.
*
/**
* This method actually creates and run the process.
* It is a noop if the process is already launched.
- * @throws HostNotFoundException
*/
- public final void start() throws HostNotFoundException {
- if (!started) {
- started = true;
- create(host.getName());
- }
+ public final void start() {
+ if (bind == 0)
+ create(host);
}
/** This method runs the process. It calls the method function that you must overwrite. */
String[] args = null; /* do not fill it before the signal or this.args will be empty */
try {
- args = new String[this.args.size()];
- if (!this.args.isEmpty()) {
- this.args.toArray(args);
+ args = new String[this.args_.size()];
+ if (!this.args_.isEmpty()) {
+ this.args_.toArray(args);
}
this.main(args);
}
/**
- * The main function of the process (to implement).
+ * The main function of the process (to implement by the user).
*
* @param args
* @throws MsgException
