// Threaddump_p.java
// -----------------------
// part of YACY
// (C) by Michael Peter Christen; mc@yacy.net
// first published on http://www.anomic.de
// Frankfurt, Germany, 2004
//
// This File is contributed by Alexander Fieger
//
// $LastChangedDate: 2011-03-17 21:48:39 +0100 (Do, 17. Mär 2011) $
// $LastChangedRevision: 7606 $
// $LastChangedBy: orbiter $
//
// 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
import java.io.File;
import java.io.IOException;
import java.util.Date;
import java.util.Map;
import java.util.ArrayList;
import net.yacy.cora.protocol.RequestHeader;
import net.yacy.kelondro.logging.ThreadDump;
import net.yacy.kelondro.util.OS;
import de.anomic.search.Switchboard;
import de.anomic.server.serverObjects;
import de.anomic.server.serverSwitch;
import de.anomic.yacy.yacyBuildProperties;
public class Threaddump_p {
public static serverObjects respond(final RequestHeader header, final serverObjects post, final serverSwitch env) {
serverObjects prop = new serverObjects();
Switchboard sb = (Switchboard) env;
final StringBuilder buffer = new StringBuilder(1000);
final boolean plain = post != null && post.getBoolean("plain", false);
final int sleep = (post == null) ? 0 : post.getInt("sleep", 0); // a sleep before creation of a thread dump can be used for profiling
if (sleep > 0) try {Thread.sleep(sleep);} catch (final InterruptedException e) {}
prop.put("dump", "1");
// Thread dump
final Date dt = new Date();
final String versionstring = yacyBuildProperties.getVersion() + "/" + yacyBuildProperties.getSVNRevision();
Runtime runtime = Runtime.getRuntime();
ThreadDump.bufferappend(buffer, plain, "************* Start Thread Dump " + dt + " *******************");
ThreadDump.bufferappend(buffer, plain, "");
ThreadDump.bufferappend(buffer, plain, "YaCy Version: " + versionstring);
ThreadDump.bufferappend(buffer, plain, "Assigned Memory = " + (runtime.maxMemory()));
ThreadDump.bufferappend(buffer, plain, "Used Memory = " + (runtime.totalMemory() - runtime.freeMemory()));
ThreadDump.bufferappend(buffer, plain, "Available Memory = " + (runtime.maxMemory() - runtime.totalMemory() + runtime.freeMemory()));
ThreadDump.bufferappend(buffer, plain, "");
ThreadDump.bufferappend(buffer, plain, "");
int multipleCount = 100;
File appPath = sb.getAppPath();
if (post != null && post.containsKey("multipleThreaddump")) {
multipleCount = post.getInt("count", multipleCount);
final ArrayList<Map<Thread,StackTraceElement[]>> traces = new ArrayList<Map<Thread,StackTraceElement[]>>();
for (int i = 0; i < multipleCount; i++) {
try {
traces.add(ThreadDump.getAllStackTraces());
} catch (OutOfMemoryError e) {
break;
}
}
ThreadDump.appendStackTraceStats(appPath, buffer, traces, plain);
} else {
// write a thread dump to standard error output
File logFile = new File("yacy.log");
if (ThreadDump.canProduceLockedBy(logFile)) {
try {
new ThreadDump(logFile).appendBlockTraces(buffer, plain);
} catch (IOException e) {
e.printStackTrace();
}
} else if (OS.canExecUnix) {
ThreadDump.bufferappend(buffer, plain, "this thread dump function can find threads that lock others, to enable this function start YaCy with 'startYACY.sh -l'");
ThreadDump.bufferappend(buffer, plain, "");
}
// generate a single thread dump
final Map<Thread,StackTraceElement[]> stackTraces = ThreadDump.getAllStackTraces();
new ThreadDump(appPath, stackTraces, plain, Thread.State.BLOCKED).appendStackTraces(buffer, plain, Thread.State.BLOCKED);
new ThreadDump(appPath, stackTraces, plain, Thread.State.RUNNABLE).appendStackTraces(buffer, plain, Thread.State.RUNNABLE);
new ThreadDump(appPath, stackTraces, plain, Thread.State.TIMED_WAITING).appendStackTraces(buffer, plain, Thread.State.TIMED_WAITING);
new ThreadDump(appPath, stackTraces, plain, Thread.State.WAITING).appendStackTraces(buffer, plain, Thread.State.WAITING);
new ThreadDump(appPath, stackTraces, plain, Thread.State.NEW).appendStackTraces(buffer, plain, Thread.State.NEW);
new ThreadDump(appPath, stackTraces, plain, Thread.State.TERMINATED).appendStackTraces(buffer, plain, Thread.State.TERMINATED);
}
ThreadDump.bufferappend(buffer, plain, "************* End Thread Dump " + dt + " *******************");
prop.put("plain_count", multipleCount);
prop.put("plain_content", buffer.toString());
prop.put("plain", (plain) ? 1 : 0);
return prop; // return from serverObjects respond()
}
}