com.sun.xml.ws.api.pipe.Engine Maven / Gradle / Ivy
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package com.sun.xml.ws.api.pipe;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;
import com.sun.xml.ws.api.message.Packet;
/**
* Collection of {@link Fiber}s.
* Owns an {@link Executor} to run them.
*
* @author Kohsuke Kawaguchi
* @author Jitendra Kotamraju
*/
public class Engine {
private volatile Executor threadPool;
public final String id;
public Engine(String id, Executor threadPool) {
this(id);
this.threadPool = threadPool;
}
public Engine(String id) {
this.id = id;
}
public void setExecutor(Executor threadPool) {
this.threadPool = threadPool;
}
void addRunnable(Fiber fiber) {
if(threadPool==null) {
synchronized(this) {
threadPool = Executors.newCachedThreadPool(new DaemonThreadFactory());
}
}
threadPool.execute(fiber);
}
/**
* Creates a new fiber in a suspended state.
*
*
* To start the returned fiber, call {@link Fiber#start(Tube,Packet,Fiber.CompletionCallback)}.
* It will start executing the given {@link Tube} with the given {@link Packet}.
*
* @return new Fiber
*/
public Fiber createFiber() {
return new Fiber(this);
}
private static class DaemonThreadFactory implements ThreadFactory {
static final AtomicInteger poolNumber = new AtomicInteger(1);
final ThreadGroup group;
final AtomicInteger threadNumber = new AtomicInteger(1);
final String namePrefix;
DaemonThreadFactory() {
SecurityManager s = System.getSecurityManager();
group = (s != null)? s.getThreadGroup() :
Thread.currentThread().getThreadGroup();
namePrefix = "jaxws-engine-" +
poolNumber.getAndIncrement() +
"-thread-";
}
public Thread newThread(Runnable r) {
Thread t = new Thread(group, r,
namePrefix + threadNumber.getAndIncrement(),
0);
if (!t.isDaemon())
t.setDaemon(true);
if (t.getPriority() != Thread.NORM_PRIORITY)
t.setPriority(Thread.NORM_PRIORITY);
return t;
}
}
}