io.logspace.jvm.agent.shaded.mchange.v2.debug.ThreadNameStackTraceRecorder Maven / Gradle / Ivy
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/*
* Distributed as part of c3p0 v.0.9.1.1
*
* Copyright (C) 2005 Machinery For Change, Inc.
*
* Author: Steve Waldman
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1, as
* published by the Free Software Foundation.
*
* This software 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this software; see the file LICENSE. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
package io.logspace.jvm.agent.shaded.mchange.v2.debug;
import java.text.*;
import java.util.*;
import io.logspace.jvm.agent.shaded.mchange.lang.ThrowableUtils;
public class ThreadNameStackTraceRecorder
{
final static String NL = System.getProperty("line.separator", "\r\n");
Set set = new HashSet();
String dumpHeader;
String stackTraceHeader;
public ThreadNameStackTraceRecorder( String dumpHeader )
{ this( dumpHeader, "Debug Stack Trace." ); }
public ThreadNameStackTraceRecorder( String dumpHeader, String stackTraceHeader )
{
this.dumpHeader = dumpHeader;
this.stackTraceHeader = stackTraceHeader;
}
public synchronized Object record()
{
Record r = new Record( stackTraceHeader );
set.add( r );
return r;
}
public synchronized void remove( Object rec )
{ set.remove( rec ); }
public synchronized int size()
{ return set.size(); }
public synchronized String getDump()
{ return getDump(null); }
public synchronized String getDump(String locationSpecificNote)
{
DateFormat df = new SimpleDateFormat("dd-MMMM-yyyy HH:mm:ss.SSSS");
StringBuffer sb = new StringBuffer(2047);
sb.append(NL);
sb.append("----------------------------------------------------");
sb.append(NL);
sb.append( dumpHeader );
sb.append(NL);
if (locationSpecificNote != null)
{
sb.append( locationSpecificNote );
sb.append( NL );
}
boolean first = true;
for (Iterator ii = set.iterator(); ii.hasNext(); )
{
if (first)
first = false;
else
{
sb.append("---");
sb.append( NL );
}
Record r = (Record) ii.next();
sb.append(df.format( new Date( r.time ) ));
sb.append(" --> Thread Name: ");
sb.append(r.threadName);
sb.append(NL);
sb.append("Stack Trace: ");
sb.append( ThrowableUtils.extractStackTrace( r.stackTrace ) );
}
sb.append("----------------------------------------------------");
sb.append(NL);
return sb.toString();
}
private final static class Record implements Comparable
{
long time;
String threadName;
Throwable stackTrace;
Record(String sth)
{
this.time = System.currentTimeMillis();
this.threadName = Thread.currentThread().getName();
this.stackTrace = new Exception( sth );
}
public int compareTo( Object o )
{
Record oo = (Record) o;
if ( this.time > oo.time )
return 1;
else if (this.time < oo.time )
return -1;
else
{
int mine = System.identityHashCode( this );
int yours = System.identityHashCode( oo );
if (mine > yours)
return 1;
else if (mine < yours)
return -1;
return 0;
}
}
}
}