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/* -*- tab-width: 4 -*-
*
* Electric(tm) VLSI Design System
*
* File: EJob.java
*
* Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
*
* Electric(tm) is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Electric(tm) is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Electric(tm); see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, Mass 02111-1307, USA.
*/
package com.sun.electric.tool;
import com.sun.electric.database.EObjectInputStream;
import com.sun.electric.database.EObjectOutputStream;
import com.sun.electric.database.EditingPreferences;
import com.sun.electric.database.Snapshot;
import com.sun.electric.database.hierarchy.EDatabase;
import com.sun.electric.tool.Job.Type;
import com.sun.electric.util.ElapseTimer;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.NotSerializableException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.logging.Level;
/**
* Class to track Job serializing and execution.
*/
public class EJob {
public enum State {
/** waiting on client */ CLIENT_WAITING,
/** waiting on server */ WAITING,
/** running on server */ RUNNING,
/** done on server */ SERVER_DONE,
/** done on client */ CLIENT_DONE;
};
/*private*/ final static String WAITING_NOW = "waiting now";
/*private*/ final static String ABORTING = "aborting";
/** Client which is owner of the Job. */ Client client;
// /** True if this Job was started by server */public boolean startedByServer;
/** job key */ Job.Key jobKey;
/** type of job (change or examine) */ public final Type jobType;
/** name of job */ public final String jobName;
public Snapshot oldSnapshot;
public Snapshot newSnapshot;
EditingPreferences editingPreferences;
/** progress */ /*private*/ String progress = null;
byte[] serializedJob;
public byte[] serializedResult;
boolean doItOk;
Job serverJob;
public Job clientJob;
State state;
/** list of saved Highlights */ int savedHighlights = -1;
/** Fields changed on server side. */ ArrayList changedFields;
/** Creates a new instance of EJob */
public EJob(Client connection, int jobId, Job.Type jobType, String jobName, byte[] bytes) {
this.client = connection;
jobKey = new Job.Key(connection, jobId, jobType != Job.Type.CLIENT_EXAMINE);
this.jobType = jobType;
this.jobName = jobName;
state = State.WAITING;
serializedJob = bytes;
}
EJob(Job job, Job.Type jobType, String jobName, EditingPreferences editingPreferences) {
this.jobType = jobType;
this.jobName = jobName;
state = State.CLIENT_WAITING;
serverJob = clientJob = job;
this.editingPreferences = editingPreferences;
}
public Job getJob() { return clientJob != null ? clientJob : serverJob; }
public Job.Inform getInform() {
boolean isChange = jobType == Type.CHANGE || jobType == Type.UNDO;
String toString = jobName+" (waiting)";
int finished = -1;
return new Job.Inform(jobKey, isChange, toString, ElapseTimer.createInstance(), finished);
}
public boolean isExamine() {
return jobType.isExamine();
}
public boolean startedByServer() {
return jobKey.startedByServer();
}
Throwable serialize(EDatabase database) {
try {
ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
ObjectOutputStream out = new EObjectOutputStream(byteStream, database);
out.writeObject(clientJob);
out.flush();
serializedJob = byteStream.toByteArray();
return null;
} catch (Throwable e) {
// if (e instanceof NotSerializableException)
{
// NotSerializableException nse = (NotSerializableException)e;
System.out.println("ERROR: Job '" + jobName + "' cannot serialize parameter: " + e.getMessage());
System.out.println("------------- Begin serialize() Exception stack trace --------------\n");
e.printStackTrace();
System.out.println("------------- End serialize() Exception stack trace ----------------\n");
}
return e;
}
}
Throwable deserializeToServer() {
try {
EDatabase database = EDatabase.serverDatabase();
ObjectInputStream in = new EObjectInputStream(new ByteArrayInputStream(serializedJob), database);
Job job = (Job)in.readObject();
in.close();
job.ejob = this;
job.database = database;
serverJob = job;
return null;
} catch (Throwable e) {
return e;
}
}
public Throwable deserializeToClient() {
try {
EDatabase database = EDatabase.clientDatabase();
ObjectInputStream in = new EObjectInputStream(new ByteArrayInputStream(serializedJob), database);
Job job = (Job)in.readObject();
in.close();
job.ejob = this;
job.database = database;
clientJob = job;
return null;
} catch (Throwable e) {
return e;
}
}
void serializeResult(EDatabase database) {
try {
ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
ObjectOutputStream out = new EObjectOutputStream(byteStream, database);
doItOk = true;
out.writeObject(null); // No exception
out.writeInt(changedFields.size());
Job job = jobType == Job.Type.CLIENT_EXAMINE ? clientJob : serverJob;
for (Field f: changedFields) {
String fieldName = f.getName();
Object value = f.get(job);
out.writeUTF(fieldName);
try {
out.writeObject(value);
} catch (NotSerializableException e) {
System.out.println("ERROR: Job '" + jobName + "' cannot serialize returned field " +
fieldName + " = " + value + " : " + e.getMessage());
throw e;
}
}
out.close();
serializedResult = byteStream.toByteArray();
} catch (Throwable e) {
Job.logger.warn("serializeResult failure", e);
serializeExceptionResult(e, database);
}
}
void serializeExceptionResult(Throwable jobException, EDatabase database) {
try {
ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
ObjectOutputStream out = new EObjectOutputStream(byteStream, database);
jobException.getStackTrace();
out.writeObject(jobException);
out.writeInt(0);
out.close();
serializedResult = byteStream.toByteArray();
} catch (Throwable e) {
Job.logger.warn("serializeExceptionResul failure", e);
serializedResult = new byte[0];
}
}
public Throwable deserializeResult() {
try {
// Class jobClass = clientJob.getClass();
ObjectInputStream in = new EObjectInputStream(new ByteArrayInputStream(serializedResult), EDatabase.clientDatabase());
Throwable jobException = (Throwable)in.readObject();
int numFields = in.readInt();
for (int i = 0; i < numFields; i++) {
String fieldName = in.readUTF();
Object value = in.readObject();
Field f = findField(fieldName);
f.setAccessible(true);
f.set(clientJob, value);
}
in.close();
return jobException;
} catch (Throwable e) {
Job.logger.warn("deserializeResult failure", e);
return e;
}
}
/**
* Method to remember that a field variable of the Job has been changed by the doIt() method.
* @param fieldName the name of the variable that changed.
*/
protected void fieldVariableChanged(String fieldName) {
Field fld = findField(fieldName);
fld.setAccessible(true);
changedFields.add(fld);
}
private Field findField(String fieldName) {
Class jobClass = getJob().getClass();
// Field fld = null;
while (jobClass != Job.class) {
try {
return jobClass.getDeclaredField(fieldName);
} catch (NoSuchFieldException e) {
jobClass = jobClass.getSuperclass();
}
}
return null;
}
}
