mirror of
https://github.com/yacy/yacy_search_server.git
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1d8d51075c
- removed the plasma package. The name of that package came from a very early pre-version of YaCy, even before YaCy was named AnomicHTTPProxy. The Proxy project introduced search for cache contents using class files that had been developed during the plasma project. Information from 2002 about plasma can be found here: http://web.archive.org/web/20020802110827/http://anomic.de/AnomicPlasma/index.html We stil have one class that comes mostly unchanged from the plasma project, the Condenser class. But this is now part of the document package and all other classes in the plasma package can be assigned to other packages. - cleaned up the http package: better structure of that class and clean isolation of server and client classes. The old HTCache becomes part of the client sub-package of http. - because the plasmaSwitchboard is now part of the search package all servlets had to be touched to declare a different package source. git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6232 6c8d7289-2bf4-0310-a012-ef5d649a1542
258 lines
12 KiB
Java
258 lines
12 KiB
Java
// 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: 2008-01-22 12:51:43 +0100 (Di, 22 Jan 2008) $
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// $LastChangedRevision: 4374 $
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// $LastChangedBy: low012 $
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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 de.anomic.document.parser.html.CharacterCoding;
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import de.anomic.http.metadata.RequestHeader;
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import de.anomic.kelondro.util.FileUtils;
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import de.anomic.kelondro.util.MemoryControl;
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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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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, "Total Memory = " + (Runtime.getRuntime().totalMemory()));
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bufferappend(buffer, plain, "Used Memory = " + (Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory()));
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bufferappend(buffer, plain, "Free Memory = " + (Runtime.getRuntime().freeMemory()));
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bufferappend(buffer, plain, "");
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bufferappend(buffer, plain, "");
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int multipleCount = 1000;
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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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