/*
- * $Id$
- *
- * 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;
/**
*
*/
-public abstract class Process extends Thread {
+public abstract class Process implements Runnable {
/**
* This attribute represents a bind between a java process object and
* 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.
*/
protected String name;
- /**
- *
- * @return
- */
- public String msgName() {
- return this.name;
- }
+ /**
+ * The PID of the process
+ */
+ protected int pid = -1;
+ /**
+ * The PPID of the process
+ */
+ protected int ppid = -1;
+ /**
+ * The host of the process
+ */
+ protected Host host = null;
+
/** The arguments of the method function of the process. */
public Vector<String> args;
- /* process synchronization tools */
- /**
- *
- */
- /**
- *
- */
- protected Sem schedBegin, schedEnd;
-
+
/**
* Default constructor (used in ApplicationHandler to initialize it)
*/
protected Process() {
- super();
this.id = nextProcessId++;
this.name = null;
this.bind = 0;
this.args = new Vector<String>();
- this.properties = null;
- schedBegin = new Sem(0);
- schedEnd = new Sem(0);
}
* @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 is the constructor called by all others */
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, double startTime, double killTime) {
+ this();
+ this.host = host;
+ if (name == null)
+ throw new NullPointerException("Process name cannot be NULL");
+ this.name = name;
- MsgNative.processCreate(this, host);
+ this.args = new Vector<String>();
+ if (null != args)
+ this.args.addAll(Arrays.asList(args));
+
+ this.startTime = startTime;
+ this.killTime = killTime;
}
-
-
+ /**
+ * The natively implemented method to create an MSG process.
+ * @param host A valid (binded) host where create the process.
+ */
+ protected native void create(String hostName) throws HostNotFoundException;
/**
* This method kills all running process of the simulation.
*
* @return The function returns the PID of the next created process.
*
*/
- public static int killAll(int resetPID) {
- return MsgNative.processKillAll(resetPID);
- }
-
+ public static native int killAll(int resetPID);
/**
- * This method kill the current process.
- * @param process the process to be killed.
+ * This method kill a process.
*
*/
- public static void kill(Process process) {
- MsgNative.processKill(process);
- }
+ public native void kill();
/**
- * This method adds an argument in the list of the arguments of the main function
- * of the process.
- *
- * @param arg The argument to add.
- *
- * @deprecated
- */
- @Deprecated
- protected void addArg(String arg) {
- args.add(arg);
- }
-
+ * Suspends the process by suspending the task on which it was
+ * waiting for the completion.
+ */
+ public native void suspend();
/**
* Suspends the process by suspending the task on which it was
* waiting for the completion.
- *
+ * DEPRECATED: use suspend instead.
*/
+ @Deprecated
public void pause() {
- MsgNative.processSuspend(this);
+ 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 void restart() {
- MsgNative.processResume(this);
- }
+ */
+ public native void resume();
/**
* Tests if a process is suspended.
*
* @return The method returns true if the process is suspended.
* Otherwise the method returns false.
*/
- public boolean isSuspended() {
- return MsgNative.processIsSuspended(this);
+ public native boolean isSuspended();
+ /**
+ * Returns the name of the process
+ */
+ public String msgName() {
+ return this.name;
}
/**
- * Returns the host of a process.
- *
+ * Returns the host of the process.
* @return The host instance of the process.
- *
- *
*/
public Host getHost() {
- return MsgNative.processGetHost(this);
+ return this.host;
}
/**
* This static method gets a process from a PID.
*
* @exception NativeException on error in the native SimGrid code
*/
- public static Process fromPID(int PID) throws NativeException {
- return MsgNative.processFromPID(PID);
- }
+ public static native Process fromPID(int PID) throws NativeException;
/**
* This method returns the PID of the process.
*
*
*/
public int getPID() {
- return MsgNative.processGetPID(this);
+ return pid;
}
/**
* This method returns the PID of the parent of a process.
*
*/
public int getPPID() {
- return MsgNative.processGetPPID(this);
+ 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.
*
* @return The current process.
*
*/
- public static Process currentProcess() {
- return MsgNative.processSelf();
- }
+ public static native Process currentProcess();
/**
* Migrates a process to another host.
*
* @param host The host where to migrate the process.
*
*/
- public static void migrate(Process process, Host host) {
- MsgNative.processMigrate(process, 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) throws HostFailureException {
+ sleep(millis,0);
}
+ /**
+ * Makes the current process sleep until millis milliseconds and nanos nanoseconds
+ * have elapsed.
+ * You should note that unlike "waitFor" which takes seconds, this method takes milliseconds and nanoseconds.
+ * Overloads Thread.sleep.
+ * @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) throws HostFailureException;
/**
* Makes the current process sleep until time seconds have elapsed.
- *
* @param seconds The time the current process must sleep.
- *
- * @exception HostFailureException on error in the native SimGrid code
*/
- public static void waitFor(double seconds) throws HostFailureException {
- MsgNative.processWaitFor(seconds);
- }
- /**
+ public native void waitFor(double seconds) throws HostFailureException;
+ /**
*
*/
public void showArgs() {
Msg.info("[" + this.msgName() + "/" + this.getHost().getName() +
"] args[" + i + "]=" + (String) (this.args.get(i)));
}
+ /**
+ * 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());
+ }
+ }
+
/**
* This method runs the process. Il calls the method function that you must overwrite.
*/
public void run() {
- String[]args = null; /* do not fill it before the signal or this.args will be empty */
-
+ String[] args = null; /* do not fill it before the signal or this.args will be empty */
//waitSignal(); /* wait for other people to fill the process in */
-
- try {
- schedBegin.acquire();
- } catch(InterruptedException e) {
- }
-
try {
args = new String[this.args.size()];
if (this.args.size() > 0) {
}
this.main(args);
- MsgNative.processExit(this);
- schedEnd.release();
} catch(MsgException e) {
e.printStackTrace();
Msg.info("Unexpected behavior. Stopping now");
System.exit(1);
}
+ catch(ProcessKilledError pk) {
+
+ }
+ exit();
}
/**
*/
public abstract void main(String[]args) throws MsgException;
-
- /**
- *
- */
- public void unschedule() {
- try {
- schedEnd.release();
- schedBegin.acquire();
- } catch (InterruptedException e) {
- /* stopped by jprocess_exit: I must terminate right now */
- /* FIXME: how to do that? */
- }
- }
-
- /**
- *
- */
- public void schedule() {
- //System.err.println("Scheduling process in Java");
- try {
- schedBegin.release();
- schedEnd.acquire();
- } catch(InterruptedException e) {
- System.err.println("Got an interuption while scheduling process in Java");
- e.printStackTrace();
- }
- }
-
- /** Send the given task in the mailbox associated with the specified alias (waiting at most given time)
- * @param mailbox
- * @param task
- * @param timeout
- * @throws TimeoutException
- * @throws HostFailureException
- * @throws TransferFailureException */
- public void taskSend(String mailbox, Task task, double timeout) throws TransferFailureException, HostFailureException, TimeoutException {
- MsgNative.taskSend(mailbox, task, timeout);
- }
-
- /** Send the given task in the mailbox associated with the specified alias
- * @param mailbox
- * @param task
- * @throws TimeoutException
- * @throws HostFailureException
- * @throws TransferFailureException */
- public void taskSend(String mailbox, Task task) throws TransferFailureException, HostFailureException, TimeoutException {
- MsgNative.taskSend(mailbox, task, -1);
- }
-
- /** Receive a task on mailbox associated with the specified mailbox
- * @param mailbox
- * @return
- * @throws TransferFailureException
- * @throws HostFailureException
- * @throws TimeoutException
- */
- public Task taskReceive(String mailbox) throws TransferFailureException, HostFailureException, TimeoutException {
- return MsgNative.taskReceive(mailbox, -1.0, null);
- }
-
- /** Receive a task on mailbox associated with the specified alias (waiting at most given time)
- * @param mailbox
- * @param timeout
- * @return
- * @throws TransferFailureException
- * @throws HostFailureException
- * @throws TimeoutException
- */
- public Task taskReceive(String mailbox, double timeout) throws TransferFailureException, HostFailureException, TimeoutException {
- return MsgNative.taskReceive(mailbox, timeout, null);
- }
-
- /** Receive a task on mailbox associated with the specified alias from given sender
- * @param mailbox
- * @param host
- * @param timeout
- * @return
- * @throws TransferFailureException
- * @throws HostFailureException
- * @throws TimeoutException
- */
- public Task taskReceive(String mailbox, double timeout, Host host) throws TransferFailureException, HostFailureException, TimeoutException {
- return MsgNative.taskReceive(mailbox, timeout, host);
+ 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();
- /** Receive a task on mailbox associated with the specified alias from given sender
- * @param mailbox
- * @param host
- * @return
- * @throws TransferFailureException
- * @throws HostFailureException
- * @throws TimeoutException
- */
- public Task taskReceive(String mailbox, Host host) throws TransferFailureException, HostFailureException, TimeoutException {
- return MsgNative.taskReceive(mailbox, -1.0, host);
- }
}
