/*
- * simgrid.msg.Host.java 1.00 07/05/01
+ * $Id$
*
* Copyright 2006,2007 Martin Quinson, Malek Cherier
* All right reserved.
import java.lang.Thread;
import java.util.*;
-/*
+
+/**
* A process may be defined as a code, with some private data, executing
* in a location (host). All the process used by your simulation must be
* declared in the deployment file (XML format).
*
* public class Slave extends simgrid.msg.Process {
*
- * (2) Write a default constructor and
- * call the default constructor of the base class.
- *
- * public Slave() {
- * super();
- * }
- *
- * (3) Override the method function
+ * (2) Override the method function
+ *
+ * \verbatim
* public void main(String[] args) {
* System.out.println("Hello MSG");
* }
+ * \endverbatim
* }
* The name of your process must be declared in the deployment file of your simulation.
* For the exemple, for the previouse process Slave this file must contains a line :
* <process host="Maxims" function="Slave"/>, where Maxims is the host of the process
* Slave. All the process of your simulation are automaticaly launched and managed by Msg.
* A process use tasks to simulate communications or computations with another process.
- * For more information see Task and ParallelTask. For more information on host concept
+ * For more information see Task. For more information on host concept
* see Host.
*
* @author Abdelmalek Cherier
* @author Martin Quinson
- * @version 1.00, 07/05/01
- * @see Host
- * @see Task
- * @see ParallelTask
* @since SimGrid 3.3
- * @since JDK1.5011
*/
-
-public abstract class Process extends Thread
-{
+
+public abstract class Process extends Thread {
/**
* 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 automaticatly during the build of the object.
*/
- public long bind;
-
+ public long bind;
+
/**
* 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;
-
+ public static long nextProcessId = 0;
+
/**
* Even if this attribute is public you must never access to it.
* It is compute automaticaly during the creation of the object.
* The native functions use this identifier to synchronize the process.
*/
- public long id;
-
+ public long id;
+
/**
* The name of the process.
*/
- protected String name;
- public String msgName() {
- return this.name;
- }
-
- /*
- * The arguments of the method function of the process.
- */
- public Vector<String> args;
-
- /* process synchronisation tools */
- protected Sem schedBegin, schedEnd;
-
+ protected String name;
+ public String msgName() {
+ return this.name;
+ }
+ /*
+ * The arguments of the method function of the process.
+ */ public Vector args;
+
+ /* process synchronisation tools */
+ protected Sem schedBegin, schedEnd;
+
/**
* Default constructor. (used in ApplicationHandler to initialize it)
*/
- protected Process() {
- super();
- this.id = 0;
- this.name = null;
- this.bind = 0;
- this.args = new Vector<String>();
- schedBegin = new Sem(0);
- schedEnd = new Sem(0);
- }
+ protected Process() {
+ super();
+ this.id = 0;
+ this.name = null;
+ this.bind = 0;
+ this.args = new Vector();
+ schedBegin = new Sem(0);
+ schedEnd = new Sem(0);
+ }
+
-
/**
* Constructs a new process from the name of a host and his name. The method
* function of the process doesn't have argument.
* JniException on JNI madness
*
*/
- public Process(String hostname,String name)
- throws NullPointerException, HostNotFoundException, JniException, NativeException {
- this(Host.getByName(hostname),name,null);
- }
-
+ public Process(String hostname, String name)
+ throws NullPointerException, HostNotFoundException, JniException,
+ NativeException {
+ this(Host.getByName(hostname), name, null);
+ }
/**
* Constructs a new process from the name of a host and his name. The arguments
* of the method function of the process are specified by the parameter args.
* NullPointerException if the provided name is null
* JniException on JNI madness
*
- */
- public Process(String hostname,String name,String args[])
- throws NullPointerException, HostNotFoundException, JniException, NativeException {
- this(Host.getByName(hostname),name,args);
- }
-
+ */ public Process(String hostname, String name, String args[])
+ throws NullPointerException, HostNotFoundException, JniException,
+ NativeException {
+ this(Host.getByName(hostname), name, args);
+ }
/**
* Constructs a new process from a host and his name. The method function of the
* process doesn't have argument.
* JniException on JNI madness
*
*/
- public Process(Host host,String name) throws NullPointerException, JniException {
- this(host,name,null);
- }
-
+ public Process(Host host, String name) throws NullPointerException,
+ JniException {
+ this(host, name, null);
+ }
/**
* Constructs a new process from a host and his name, the arguments of here method function are
* specified by the parameter args.
* JniException on JNI madness
*
*/
- public Process(Host host,String name,String[] args) throws NullPointerException, JniException {
- /* This is the constructor called by all others */
-
- if (name==null)
- throw new NullPointerException("Process name cannot be NULL");
-
-
- this.args = new Vector<String>();
-
- if(null != args)
- this.args.addAll(Arrays.asList(args));
-
- this.name = name;
- this.id = nextProcessId++;
-
- schedBegin = new Sem(0);
- schedEnd = new Sem(0);
-
- Msg.processCreate(this,host);
- }
-
+ public Process(Host host, String name,
+ String[]args) throws NullPointerException, JniException {
+ /* This is the constructor called by all others */
+
+ if (name == null)
+ throw new NullPointerException("Process name cannot be NULL");
+
+
+ this.args = new Vector();
+
+ if (null != args)
+ this.args.addAll(Arrays.asList(args));
+
+ this.name = name;
+ this.id = nextProcessId++;
+
+ schedBegin = new Sem(0);
+ schedEnd = new Sem(0);
+
+ MsgNative.processCreate(this, host);
+ }
/**
* 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 Msg.processKillAll(resetPID);
- }
-
+ */ public static int killAll(int resetPID) {
+ return MsgNative.processKillAll(resetPID);
+ }
+
/**
* This method adds an argument in the list of the arguments of the main function
* of the process.
*
* @param arg The argument to add.
*/
- protected void addArg(String arg) {
- args.add(arg);
- }
-
+ protected void addArg(String arg) {
+ args.add(arg);
+ }
+
/**
* This method suspends the process by suspending the task on which it was
* waiting for the completion.
* @exception JniException on JNI madness
* NativeException on error in the native SimGrid code
*/
- public void pause() throws JniException,NativeException {
- Msg.processSuspend(this);
- }
-
+ public void pause() throws JniException, NativeException {
+ MsgNative.processSuspend(this);
+ }
/**
* This method resumes a suspended process by resuming the task on which it was
* waiting for the completion.
* @exception JniException on JNI madness
* NativeException on error in the native SimGrid code
*
- */
- public void restart() throws JniException,NativeException {
- Msg.processResume(this);
- }
-
+ */ public void restart() throws JniException, NativeException {
+ MsgNative.processResume(this);
+ }
/**
* This method tests if a process is suspended.
*
* Otherwise the method returns false.
*
* @exception JniException on JNI madness
- */
- public boolean isSuspended() throws JniException {
- return Msg.processIsSuspended(this);
- }
-
+ */ public boolean isSuspended() throws JniException {
+ return MsgNative.processIsSuspended(this);
+ }
/**
* This method returns the host of a process.
*
* @exception JniException on JNI madness
* NativeException on error in the native SimGrid code
*
- */
- public Host getHost() throws JniException,NativeException{
- return Msg.processGetHost(this);
- }
-
+ */ public Host getHost() throws JniException, NativeException {
+ return MsgNative.processGetHost(this);
+ }
/**
* This static method get a process from a PID.
*
* @return The process with the specified PID.
*
* @exception NativeException on error in the native SimGrid code
- */
- public static Process fromPID(int PID) throws NativeException {
- return Msg.processFromPID(PID);
- }
-
+ */ public static Process fromPID(int PID) throws NativeException {
+ return MsgNative.processFromPID(PID);
+ }
/**
* This method returns the PID of the process.
*
*
* @exception JniException on JNI madness
* NativeException on error in the native SimGrid code
- */
- public int getPID() throws JniException,NativeException{
- return Msg.processGetPID(this);
- }
-
+ */ public int getPID() throws JniException, NativeException {
+ return MsgNative.processGetPID(this);
+ }
/**
* This method returns the PID of the parent of a process.
*
* @return The PID of the parent of the process.
*
* @exception NativeException on error in the native SimGrid code
- */
- public int getPPID() throws NativeException{
- return Msg.processGetPPID(this);
- }
-
+ */ public int getPPID() throws NativeException {
+ return MsgNative.processGetPPID(this);
+ }
/**
* This static method returns the currently running process.
*
* @exception NativeException on error in the native SimGrid code
*
*
- */
- public static Process currentProcess() throws NativeException{
- return Msg.processSelf();
- }
-
+ */ public static Process currentProcess() throws NativeException {
+ return MsgNative.processSelf();
+ }
/**
* This static method returns the PID of the currently running process.
*
* @return The PID of the current process.
- */
- public static int currentProcessPID(){
- return Msg.processSelfPID();
- }
-
+ */ public static int currentProcessPID() {
+ return MsgNative.processSelfPID();
+ }
+
/**
* This static method returns the PID of the parent of the currently running process.
*
* @return The PID of the parent of current process.
*/
- public static int currentProcessPPID(){
- return Msg.processSelfPPID();
- }
-
+ public static int currentProcessPPID() {
+ return MsgNative.processSelfPPID();
+ }
+
/**
* This function migrates a process to another host.
*
*
* @exception JniException on JNI madness
* NativeException on error in the native SimGrid code
- */
- public void migrate(Host host) throws JniException, NativeException{
- Msg.processChangeHost(this,host);
- }
-
+ */
+ public void migrate(Host host) throws JniException, NativeException {
+ MsgNative.processChangeHost(this, host);
+ }
/**
* This method makes the current process sleep until time seconds have elapsed.
*
* @param seconds The time the current process must sleep.
*
* @exception NativeException on error in the native SimGrid code
- */
- public static void waitFor(double seconds) throws NativeException {
- Msg.processWaitFor(seconds);
- }
-
-
- public void showArgs(){
- try {
- Msg.info("["+this.name+"/"+this.getHost().getName()+"] argc="+this.args.size() );
- for(int i = 0; i < this.args.size(); i++)
- Msg.info("["+this.msgName()+"/"+this.getHost().getName()+
- "] args["+i+"]="+(String)(this.args.get(i)));
- } catch (MsgException e) {
- Msg.info("Damn JNI stuff");
- e.printStackTrace();
- System.exit(1);
- }
+ */ public static void waitFor(double seconds) throws NativeException {
+ MsgNative.processWaitFor(seconds);
+ } public void showArgs() {
+ try {
+ Msg.info("[" + this.name + "/" + this.getHost().getName() + "] argc=" +
+ this.args.size());
+ for (int i = 0; i < this.args.size(); i++)
+ Msg.info("[" + this.msgName() + "/" + this.getHost().getName() +
+ "] args[" + i + "]=" + (String) (this.args.get(i)));
+ } catch(MsgException e) {
+ Msg.info("Damn JNI stuff");
+ e.printStackTrace();
+ System.exit(1);
}
+ }
/**
* This method runs the process. Il calls the method function that you must overwrite.
*/
- public synchronized void run() {
-
- try {
- 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) {
- }
-
-
-
- if(this.args.size() > 0)
- {
-
- args = new String[this.args.size()];
- this.args.toArray(args);
- }
-
- this.main(args);
- Msg.processExit(this);
- schedEnd.release();
- } catch (MsgException e) {
- e.printStackTrace();
- Msg.info("Unexpected behavior. Stopping now");
- System.exit(1);
- }
+ public synchronized void run() {
+
+ try {
+ 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) {
+ }
+
+
+
+ if (this.args.size() > 0) {
+
+ args = new String[this.args.size()];
+ this.args.toArray(args);
+ }
+
+ this.main(args);
+ MsgNative.processExit(this);
+ schedEnd.release();
}
-
+ catch(MsgException e) {
+ e.printStackTrace();
+ Msg.info("Unexpected behavior. Stopping now");
+ System.exit(1);
+ }
+ }
+
/**
- * Process synchronization. The process wait the signal of the simulator to start.
- *
- * @exception JniException on JNI madness
+ * The main function of the process (to implement).
*/
- private void waitSignal() throws JniException{
- Msg.waitSignal(this);
- unschedule();
+ public abstract void main(String[]args)
+ throws JniException, NativeException;
+
+
+ public void unschedule() {
+ try {
+ schedEnd.release();
+ schedBegin.acquire();
+ } catch(InterruptedException e) {
}
-
- /**
- * The main function of the process (to implement).
- */
- public abstract void main(String[] args)
- throws JniException, NativeException;
-
-
- public void unschedule() {
-
- try {
- schedEnd.release();
- schedBegin.acquire();
- } catch(InterruptedException e){
-
- }
- }
-
- public void schedule() {
-
- try {
- schedBegin.release();
- schedEnd.acquire();
- } catch(InterruptedException e) {
-
- }
- }
-
- public void taskSend(Channel channel,Task task, Host host) throws NativeException, JniException {
- Msg.channelPut(channel,task,host);
- }
-
- public Task taskReceive(Channel channel) throws NativeException, JniException {
- return Msg.channelGet(channel);
- }
-}
+ }
+
+ public void schedule() {
+ try {
+ schedBegin.release();
+ schedEnd.acquire();
+ } catch(InterruptedException e) {
+ }
+ }
+ /** Send the given task to given host on given channel */
+ public void taskSend(Host host, int channel,
+ Task task) throws NativeException, JniException {
+ MsgNative.hostPut(host, channel, task, -1);
+ }
+ /** Receive a task on given channel */
+ public Task taskReceive(int channel) throws NativeException,
+ JniException {
+ return MsgNative.taskGet(channel, -1, null);
+ }
+ /** Receive a task on given channel (waiting at most given time) */
+ public Task taskReceive(int channel,
+ double timeout) throws NativeException,
+ JniException {
+ return MsgNative.taskGet(channel, timeout, null);
+ }
+ /** Receive a task on given channel from given sender */
+ public Task taskReceive(int channel, Host host) throws NativeException,
+ JniException {
+ return MsgNative.taskGet(channel, -1, host);
+ }
+ /** Receive a task on given channel from given sender (waiting at most given time) */
+ public Task taskReceive(int channel, double timeout,
+ Host host) throws NativeException, JniException {
+ return MsgNative.taskGet(channel, timeout, host);
+ }
+}
