org.jgroups.util.DefaultThreadFactory Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
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package org.jgroups.util;
import org.jgroups.logging.Log;
/**
* Thread factory mainly responsible for naming of threads. Can be replaced by
* user. If use_numbering is set, a thread THREAD will be called THREAD-1,
* THREAD-2, and so on. If a pattern has been set (through setPattern()),
* then the cluster name and local address will also be added, e.g.
* THREAD-5,MyCluster,192.168.1.5:63754 or THREAD,MyCluster,192.168.1.5:63754
*
* If includeClusterName and includeLocalAddress are both false, and clusterName is set, then we assume we
* have a shared transport, and therefore print shared=clusterName.
* @author Vladimir Blagojevic
* @author Bela Ban
*/
public class DefaultThreadFactory implements ThreadFactory {
protected final String baseName;
protected final boolean createDaemons;
protected final boolean use_numbering;
protected short counter; // if numbering is enabled
protected boolean includeClusterName;
protected String clusterName;
protected boolean includeLocalAddress;
protected String address;
protected boolean use_virtual_threads; // use fibers instead of threads (requires Java 15)
protected Log log;
public DefaultThreadFactory(String baseName, boolean createDaemons) {
this(baseName, createDaemons, false);
}
public DefaultThreadFactory(String baseName, boolean createDaemons, boolean use_numbering) {
this.baseName=baseName;
this.createDaemons=createDaemons;
this.use_numbering=use_numbering;
}
public void setPattern(String pattern) {
if(pattern != null) {
includeClusterName=pattern.contains("c");
includeLocalAddress=pattern.contains("l");
}
}
public void setIncludeClusterName(boolean includeClusterName) {
this.includeClusterName=includeClusterName;
}
public void setClusterName(String channelName) {
clusterName=channelName;
}
public void setAddress(String address) {
this.address=address;
}
@Deprecated(forRemoval=true)
public boolean useFibers() {return useVirtualThreads();}
@Deprecated(forRemoval=true)
public T useFibers(boolean f) {return useVirtualThreads(f);}
public boolean useVirtualThreads() {return use_virtual_threads;}
public T useVirtualThreads(boolean f) {this.use_virtual_threads=f; return (T)this;}
public T log(Log l) {this.log=l; return (T)this;}
public Thread newThread(Runnable r, String name) {
return newThread(r, name, null, null);
}
public Thread newThread(Runnable r) {
return newThread(r, baseName, null, null);
}
protected Thread newThread(Runnable r, String name, String addr, String cluster_name) {
String thread_name=getNewThreadName(name, addr, cluster_name);
return ThreadCreator.createThread(r, thread_name, createDaemons, use_virtual_threads);
}
public void renameThread(String base_name, Thread thread) {
renameThread(base_name, thread, address, clusterName);
}
/**
* Names a thread according to base_name, cluster name and local address. If includeClusterName and includeLocalAddress
* are null, but cluster_name is set, then we assume we have a shared transport and name the thread shared=clusterName.
* In the latter case, clusterName points to the singleton_name of TP.
* @param base_name
* @param thread
* @param addr
* @param cluster_name
*/
public void renameThread(String base_name, Thread thread, String addr, String cluster_name) {
String thread_name=getThreadName(base_name, thread, addr, cluster_name);
if(thread_name != null)
thread.setName(thread_name);
}
public void renameThread(Thread thread) {
renameThread(null, thread);
}
protected String getThreadName(String base_name, final Thread thread, String addr, String cluster_name) {
if(thread == null)
return null;
StringBuilder sb=new StringBuilder(base_name != null? base_name : thread.getName());
if(use_numbering) {
short id;
synchronized(this) {
id=++counter;
}
sb.append("-").append(id);
}
if(cluster_name == null)
cluster_name=clusterName;
if(addr == null)
addr=this.address;
if(!includeClusterName && !includeLocalAddress && cluster_name != null) {
sb.append(",shared=").append(cluster_name);
return sb.toString();
}
if(includeClusterName)
sb.append(',').append(cluster_name);
if(includeLocalAddress)
sb.append(',').append(addr);
if(use_numbering || includeClusterName || includeLocalAddress)
return sb.toString();
return null;
}
protected String getNewThreadName(String base_name, String addr, String cluster_name) {
StringBuilder sb=new StringBuilder(base_name != null? base_name : "thread");
if(use_numbering) {
short id;
synchronized(this) {
id=++counter;
}
sb.append("-").append(id);
}
if(cluster_name == null)
cluster_name=clusterName;
if(addr == null)
addr=this.address;
if(!includeClusterName && !includeLocalAddress && cluster_name != null) {
sb.append(",shared=").append(cluster_name);
return sb.toString();
}
if(includeClusterName)
sb.append(',').append(cluster_name);
if(includeLocalAddress)
sb.append(',').append(addr);
return sb.toString();
}
}