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260 lines
12 KiB
260 lines
12 KiB
// Threaddump_p.java
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// -----------------------
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// part of YACY
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// (C) by Michael Peter Christen; mc@yacy.net
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2004
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//
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// This File is contributed by Alexander Fieger
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//
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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// You must compile this file with
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// javac -classpath .:../Classes Blacklist_p.java
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// if the shell's current path is HTROOT
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import java.io.File;
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import java.io.IOException;
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import java.util.Date;
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import java.util.Map;
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import java.util.Map.Entry;
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import java.util.ArrayList;
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import java.util.HashMap;
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import net.yacy.kelondro.util.FileUtils;
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import net.yacy.kelondro.util.MemoryControl;
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import de.anomic.document.parser.html.CharacterCoding;
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import de.anomic.http.server.RequestHeader;
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import de.anomic.search.Switchboard;
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import de.anomic.server.serverObjects;
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import de.anomic.server.serverSwitch;
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import de.anomic.tools.nxTools;
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import de.anomic.yacy.yacyBuildProperties;
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public class Threaddump_p {
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public static serverObjects respond(final RequestHeader header, final serverObjects post, final serverSwitch env) {
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serverObjects prop = new serverObjects();
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Switchboard sb = (Switchboard) env;
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final StringBuilder buffer = new StringBuilder(1000);
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final boolean plain = post != null && post.get("plain", "false").equals("true");
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final int sleep = (post == null) ? 0 : post.getInt("sleep", 0); // a sleep before creation of a thread dump can be used for profiling
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if (sleep > 0) try {Thread.sleep(sleep);} catch (final InterruptedException e) {}
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prop.put("dump", "1");
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// Thread dump
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final Date dt = new Date();
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final String versionstring = yacyBuildProperties.getVersion() + "/" + yacyBuildProperties.getSVNRevision();
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Runtime runtime = Runtime.getRuntime();
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bufferappend(buffer, plain, "************* Start Thread Dump " + dt + " *******************");
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bufferappend(buffer, plain, "");
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bufferappend(buffer, plain, "YaCy Version: " + versionstring);
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bufferappend(buffer, plain, "Assigned Memory = " + (runtime.maxMemory()));
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bufferappend(buffer, plain, "Used Memory = " + (runtime.totalMemory() - runtime.freeMemory()));
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bufferappend(buffer, plain, "Available Memory = " + (runtime.maxMemory() - runtime.totalMemory() + runtime.freeMemory()));
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bufferappend(buffer, plain, "");
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bufferappend(buffer, plain, "");
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int multipleCount = 100;
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if (post != null && post.containsKey("multipleThreaddump")) {
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multipleCount = post.getInt("count", multipleCount);
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final ArrayList<Map<Thread,StackTraceElement[]>> traces = new ArrayList<Map<Thread,StackTraceElement[]>>();
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for (int i = 0; i < multipleCount; i++) {
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traces.add(Thread.getAllStackTraces());
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if (MemoryControl.available() < 20 * 1024 * 1024) break;
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}
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appendStackTraceStats(sb.getRootPath(), buffer, traces, plain, Thread.State.BLOCKED);
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appendStackTraceStats(sb.getRootPath(), buffer, traces, plain, Thread.State.RUNNABLE);
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appendStackTraceStats(sb.getRootPath(), buffer, traces, plain, Thread.State.TIMED_WAITING);
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appendStackTraceStats(sb.getRootPath(), buffer, traces, plain, Thread.State.WAITING);
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appendStackTraceStats(sb.getRootPath(), buffer, traces, plain, Thread.State.NEW);
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appendStackTraceStats(sb.getRootPath(), buffer, traces, plain, Thread.State.TERMINATED);
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} else {
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// generate a single thread dump
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final Map<Thread,StackTraceElement[]> stackTraces = Thread.getAllStackTraces();
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appendStackTraces(sb.getRootPath(), buffer, stackTraces, plain, Thread.State.BLOCKED);
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appendStackTraces(sb.getRootPath(), buffer, stackTraces, plain, Thread.State.RUNNABLE);
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appendStackTraces(sb.getRootPath(), buffer, stackTraces, plain, Thread.State.TIMED_WAITING);
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appendStackTraces(sb.getRootPath(), buffer, stackTraces, plain, Thread.State.WAITING);
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appendStackTraces(sb.getRootPath(), buffer, stackTraces, plain, Thread.State.NEW);
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appendStackTraces(sb.getRootPath(), buffer, stackTraces, plain, Thread.State.TERMINATED);
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}
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bufferappend(buffer, plain, "************* End Thread Dump " + dt + " *******************");
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prop.put("plain_count", multipleCount);
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prop.put("plain_content", buffer.toString());
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prop.put("plain", (plain) ? 1 : 0);
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return prop; // return from serverObjects respond()
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}
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private static void appendStackTraces(final File rootPath, final StringBuilder buffer, final Map<Thread,StackTraceElement[]> stackTraces, final boolean plain, final Thread.State stateIn) {
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bufferappend(buffer, plain, "THREADS WITH STATES: " + stateIn.toString());
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bufferappend(buffer, plain, "");
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// collect single dumps
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HashMap<String, ArrayList<String>> dumps = dumpCollection(rootPath, stackTraces, plain, stateIn);
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// write dumps
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for (final Entry<String, ArrayList<String>> entry: dumps.entrySet()) {
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ArrayList<String> threads = entry.getValue();
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for (int i = 0; i < threads.size(); i++) bufferappend(buffer, plain, threads.get(i));
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bufferappend(buffer, plain, entry.getKey());
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bufferappend(buffer, plain, "");
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}
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bufferappend(buffer, plain, "");
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}
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private static void appendStackTraceStats(final File rootPath, final StringBuilder buffer, final ArrayList<Map<Thread,StackTraceElement[]>> traces, final boolean plain, final Thread.State stateIn) {
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bufferappend(buffer, plain, "THREADS WITH STATES: " + stateIn.toString());
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bufferappend(buffer, plain, "");
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// collect single dumps
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HashMap<String, Integer> dumps = dumpStatistic(rootPath, traces, plain, stateIn);
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// write dumps
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while (dumps.size() > 0) {
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Entry<String, Integer> e = removeMax(dumps);
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bufferappend(buffer, plain, "Occurrences: " + e.getValue());
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bufferappend(buffer, plain, e.getKey());
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//bufferappend(buffer, plain, "");
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}
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bufferappend(buffer, plain, "");
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}
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private static Entry<String, Integer> removeMax(HashMap<String, Integer> result) {
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Entry<String, Integer> max = null;
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for (final Entry<String, Integer> e: result.entrySet()) {
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if (max == null || e.getValue().intValue() > max.getValue().intValue()) {
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max = e;
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}
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}
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result.remove(max.getKey());
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return max;
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}
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private static HashMap<String, Integer> dumpStatistic(final File rootPath, final ArrayList<Map<Thread,StackTraceElement[]>> stackTraces, final boolean plain, final Thread.State stateIn) {
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Map<Thread,StackTraceElement[]> trace;
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HashMap<String, Integer> result = new HashMap<String, Integer>();
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HashMap<String, ArrayList<String>> x;
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int count;
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for (int i = 0; i < stackTraces.size(); i++) {
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trace = stackTraces.get(i);
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x = dumpCollection(rootPath, trace, plain, stateIn);
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for (final Entry<String, ArrayList<String>> e: x.entrySet()) {
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Integer c = result.get(e.getKey());
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count = e.getValue().size();
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if (c == null) result.put(e.getKey(), Integer.valueOf(count));
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else {
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c = Integer.valueOf(c.intValue() + count);
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result.put(e.getKey(), c);
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}
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}
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}
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return result;
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}
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private static HashMap<String, ArrayList<String>> dumpCollection(final File rootPath, final Map<Thread,StackTraceElement[]> stackTraces, final boolean plain, final Thread.State stateIn) {
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final File classPath = new File(rootPath, "source");
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Thread thread;
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// collect single dumps
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HashMap<String, ArrayList<String>> dumps = new HashMap<String, ArrayList<String>>();
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for (final Entry<Thread, StackTraceElement[]> entry: stackTraces.entrySet()) {
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thread = entry.getKey();
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final StackTraceElement[] stackTraceElements = entry.getValue();
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StackTraceElement ste;
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String line;
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String tracename = "";
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File classFile;
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if ((stateIn.equals(thread.getState())) && (stackTraceElements.length > 0)) {
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StringBuilder sb = new StringBuilder(3000);
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if (plain) {
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classFile = getClassFile(classPath, stackTraceElements[stackTraceElements.length - 1].getClassName());
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tracename = classFile.getName();
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if (tracename.endsWith(".java")) tracename = tracename.substring(0, tracename.length() - 5);
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if (tracename.length() > 20) tracename = tracename.substring(0, 20);
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while (tracename.length() < 20) tracename = tracename + "_";
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tracename = "[" + tracename + "] ";
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}
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String threadtitle = tracename + "Thread= " + thread.getName() + " " + (thread.isDaemon()?"daemon":"") + " id=" + thread.getId() + " " + thread.getState().toString();
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String className;
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boolean cutcore = true;
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for (int i = 0; i < stackTraceElements.length; i++) {
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ste = stackTraceElements[i];
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className = ste.getClassName();
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if (cutcore && (className.startsWith("java.") || className.startsWith("sun."))) {
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sb.setLength(0);
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bufferappend(sb, plain, tracename + "at " + CharacterCoding.unicode2html(ste.toString(), true));
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} else {
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cutcore = false;
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if (i == 0) {
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line = getLine(getClassFile(classPath, className), ste.getLineNumber());
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} else {
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line = null;
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}
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if ((line != null) && (line.length() > 0)) {
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bufferappend(sb, plain, tracename + "at " + CharacterCoding.unicode2html(ste.toString(), true) + " [" + line.trim() + "]");
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} else {
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bufferappend(sb, plain, tracename + "at " + CharacterCoding.unicode2html(ste.toString(), true));
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}
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}
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}
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String threaddump = sb.toString();
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ArrayList<String> threads = dumps.get(threaddump);
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if (threads == null) threads = new ArrayList<String>();
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threads.add(threadtitle);
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dumps.put(threaddump, threads);
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}
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}
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return dumps;
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}
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private static File getClassFile(final File sourcePath, final String classname) {
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final String classPath = classname.replace('.', '/') + ".java";
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final File file = new File(sourcePath, classPath);
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return file;
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}
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private static String getLine(final File file, final int line) {
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// find class
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if (!file.exists()) return "";
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try {
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final String lineString = nxTools.line(FileUtils.read(file), line);
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if (lineString == null) return "@ERROR";
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return lineString;
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} catch (final IOException e) {
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return "@EXCEPTION: " + e.getMessage();
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}
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}
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private static void bufferappend(final StringBuilder buffer, final boolean plain, final String a) {
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buffer.append(a);
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if (plain) {
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buffer.append("\n");
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} else {
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buffer.append("<br />");
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}
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}
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}
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