You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
176 lines
8.6 KiB
176 lines
8.6 KiB
// serverInstantThread.java
|
|
// -----------------------
|
|
// (C) by Michael Peter Christen; mc@anomic.de
|
|
// first published on http://www.anomic.de
|
|
// Frankfurt, Germany, 2005
|
|
// last major change: 14.03.2005
|
|
//
|
|
// This program 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 2 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program 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 this program; if not, write to the Free Software
|
|
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
//
|
|
// Using this software in any meaning (reading, learning, copying, compiling,
|
|
// running) means that you agree that the Author(s) is (are) not responsible
|
|
// for cost, loss of data or any harm that may be caused directly or indirectly
|
|
// by usage of this softare or this documentation. The usage of this software
|
|
// is on your own risk. The installation and usage (starting/running) of this
|
|
// software may allow other people or application to access your computer and
|
|
// any attached devices and is highly dependent on the configuration of the
|
|
// software which must be done by the user of the software; the author(s) is
|
|
// (are) also not responsible for proper configuration and usage of the
|
|
// software, even if provoked by documentation provided together with
|
|
// the software.
|
|
//
|
|
// Any changes to this file according to the GPL as documented in the file
|
|
// gpl.txt aside this file in the shipment you received can be done to the
|
|
// lines that follows this copyright notice here, but changes must not be
|
|
// done inside the copyright notive above. A re-distribution must contain
|
|
// the intact and unchanged copyright notice.
|
|
// Contributions and changes to the program code must be marked as such.
|
|
|
|
package de.anomic.server;
|
|
|
|
import java.lang.reflect.InvocationTargetException;
|
|
import java.lang.reflect.Method;
|
|
|
|
import de.anomic.server.logging.serverLog;
|
|
|
|
public final class serverInstantThread extends serverAbstractThread implements serverThread {
|
|
|
|
private Method jobExecMethod, jobCountMethod, freememExecMethod;
|
|
private Object environment;
|
|
|
|
public static int instantThreadCounter = 0;
|
|
|
|
public serverInstantThread(Object env, String jobExec, String jobCount, String freemem) {
|
|
// jobExec is the name of a method of the object 'env' that executes the one-step-run
|
|
// jobCount is the name of a method that returns the size of the job
|
|
// freemem is the name of a method that tries to free memory and returns void
|
|
try {
|
|
this.jobExecMethod = env.getClass().getMethod(jobExec, new Class[0]);
|
|
} catch (NoSuchMethodException e) {
|
|
throw new RuntimeException("serverInstantThread, wrong declaration of jobExec: " + e.getMessage());
|
|
}
|
|
try {
|
|
if (jobCount == null)
|
|
this.jobCountMethod = null;
|
|
else
|
|
this.jobCountMethod = env.getClass().getMethod(jobCount, new Class[0]);
|
|
|
|
} catch (NoSuchMethodException e) {
|
|
throw new RuntimeException("serverInstantThread, wrong declaration of jobCount: " + e.getMessage());
|
|
}
|
|
try {
|
|
if (freemem == null)
|
|
this.freememExecMethod = null;
|
|
else
|
|
this.freememExecMethod = env.getClass().getMethod(freemem, new Class[0]);
|
|
|
|
} catch (NoSuchMethodException e) {
|
|
throw new RuntimeException("serverInstantThread, wrong declaration of freemem: " + e.getMessage());
|
|
}
|
|
this.environment = env;
|
|
this.setName(env.getClass().getName() + "." + jobExec);
|
|
}
|
|
|
|
public int getJobCount() {
|
|
if (this.jobCountMethod == null) return Integer.MAX_VALUE;
|
|
try {
|
|
Object result = jobCountMethod.invoke(environment, new Object[0]);
|
|
if (result instanceof Integer)
|
|
return ((Integer) result).intValue();
|
|
else
|
|
return -1;
|
|
} catch (IllegalAccessException e) {
|
|
return -1;
|
|
} catch (IllegalArgumentException e) {
|
|
return -1;
|
|
} catch (InvocationTargetException e) {
|
|
serverLog.logSevere("SERVER", "invocation serverInstantThread of thread '" + this.getName() + "': " + e.getMessage(), e);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
public boolean job() throws Exception {
|
|
instantThreadCounter++;
|
|
boolean jobHasDoneSomething = false;
|
|
try {
|
|
Object result = jobExecMethod.invoke(environment, new Object[0]);
|
|
if (result == null) jobHasDoneSomething = true;
|
|
else if (result instanceof Boolean) jobHasDoneSomething = ((Boolean) result).booleanValue();
|
|
} catch (IllegalAccessException e) {
|
|
serverLog.logSevere("SERVER", "Internal Error in serverInstantThread.job: " + e.getMessage());
|
|
serverLog.logSevere("SERVER", "shutting down thread '" + this.getName() + "'");
|
|
this.terminate(false);
|
|
} catch (IllegalArgumentException e) {
|
|
serverLog.logSevere("SERVER", "Internal Error in serverInstantThread.job: " + e.getMessage());
|
|
serverLog.logSevere("SERVER", "shutting down thread '" + this.getName() + "'");
|
|
this.terminate(false);
|
|
} catch (InvocationTargetException e) {
|
|
serverLog.logSevere("SERVER", "Runtime Error in serverInstantThread.job, thread '" + this.getName() + "': " + e.getMessage() + "; target exception: " + e.getTargetException().getMessage(), e.getTargetException());
|
|
e.getTargetException().printStackTrace();
|
|
} catch (OutOfMemoryError e) {
|
|
serverLog.logSevere("SERVER", "OutOfMemory Error in serverInstantThread.job, thread '" + this.getName() + "': " + e.getMessage());
|
|
e.printStackTrace();
|
|
freemem();
|
|
}
|
|
instantThreadCounter--;
|
|
return jobHasDoneSomething;
|
|
}
|
|
|
|
public void freemem() {
|
|
if (freememExecMethod == null) return;
|
|
try {
|
|
freememExecMethod.invoke(environment, new Object[0]);
|
|
} catch (IllegalAccessException e) {
|
|
serverLog.logSevere("SERVER", "Internal Error in serverInstantThread.freemem: " + e.getMessage());
|
|
serverLog.logSevere("SERVER", "shutting down thread '" + this.getName() + "'");
|
|
this.terminate(false);
|
|
} catch (IllegalArgumentException e) {
|
|
serverLog.logSevere("SERVER", "Internal Error in serverInstantThread.freemem: " + e.getMessage());
|
|
serverLog.logSevere("SERVER", "shutting down thread '" + this.getName() + "'");
|
|
this.terminate(false);
|
|
} catch (InvocationTargetException e) {
|
|
serverLog.logSevere("SERVER", "Runtime Error in serverInstantThread.freemem, thread '" + this.getName() + "': " + e.getMessage() + "; target exception: " + e.getTargetException().getMessage(), e.getTargetException());
|
|
e.getTargetException().printStackTrace();
|
|
} catch (OutOfMemoryError e) {
|
|
serverLog.logSevere("SERVER", "OutOfMemory Error in serverInstantThread.freemem, thread '" + this.getName() + "': " + e.getMessage());
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
|
|
public static serverThread oneTimeJob(Object env, String jobExec, serverLog log, long startupDelay) {
|
|
// start the job and execute it once as background process
|
|
serverThread thread = new serverInstantThread(env, jobExec, null, null);
|
|
thread.setStartupSleep(startupDelay);
|
|
thread.setIdleSleep(-1);
|
|
thread.setBusySleep(-1);
|
|
thread.setMemPreReqisite(0);
|
|
thread.setLog(log);
|
|
thread.start();
|
|
return thread;
|
|
}
|
|
|
|
public static serverThread oneTimeJob(Runnable thread, long startupDelay) {
|
|
serverLog log = new serverLog(thread.getClass().getName() + "/run");
|
|
log.setLevel(java.util.logging.Level.INFO);
|
|
return oneTimeJob(thread, "run", log, startupDelay);
|
|
}
|
|
|
|
public static serverThread oneTimeJob(Runnable thread, long startupDelay, int maxJobs) {
|
|
while (instantThreadCounter >= maxJobs) try {Thread.sleep(100);} catch (InterruptedException e) {break;}
|
|
return oneTimeJob( thread, startupDelay);
|
|
}
|
|
|
|
}
|