From 280ad8b8bf2942f055daf5fb6f8ae55a7f88243a Mon Sep 17 00:00:00 2001
From: Albert Pham <the.sk89q@gmail.com>
Date: Thu, 13 Jun 2013 15:55:12 -0700
Subject: Initial commit.

---
 .../java/com/sk89q/warmroast/ClassMapping.java     |  67 +++++
 .../java/com/sk89q/warmroast/DataViewServlet.java  |  76 +++++
 src/main/java/com/sk89q/warmroast/McpMapping.java  | 112 ++++++++
 .../java/com/sk89q/warmroast/RoastOptions.java     |  49 ++++
 src/main/java/com/sk89q/warmroast/StackNode.java   | 162 +++++++++++
 .../java/com/sk89q/warmroast/StackTraceNode.java   |  96 +++++++
 src/main/java/com/sk89q/warmroast/WarmRoast.java   | 309 +++++++++++++++++++++
 7 files changed, 871 insertions(+)
 create mode 100644 src/main/java/com/sk89q/warmroast/ClassMapping.java
 create mode 100644 src/main/java/com/sk89q/warmroast/DataViewServlet.java
 create mode 100644 src/main/java/com/sk89q/warmroast/McpMapping.java
 create mode 100644 src/main/java/com/sk89q/warmroast/RoastOptions.java
 create mode 100644 src/main/java/com/sk89q/warmroast/StackNode.java
 create mode 100644 src/main/java/com/sk89q/warmroast/StackTraceNode.java
 create mode 100644 src/main/java/com/sk89q/warmroast/WarmRoast.java

(limited to 'src/main/java/com/sk89q')

diff --git a/src/main/java/com/sk89q/warmroast/ClassMapping.java b/src/main/java/com/sk89q/warmroast/ClassMapping.java
new file mode 100644
index 0000000..ad3f7c0
--- /dev/null
+++ b/src/main/java/com/sk89q/warmroast/ClassMapping.java
@@ -0,0 +1,67 @@
+/*
+ * WarmRoast
+ * Copyright (C) 2013 Albert Pham <http://www.sk89q.com>
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+package com.sk89q.warmroast;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class ClassMapping {
+    
+    private final String obfuscated;
+    private final String actual;
+    private final Map<String, List<String>> methods = new HashMap<>();
+    
+    public ClassMapping(String obfuscated, String actual) {
+        this.obfuscated = obfuscated;
+        this.actual = actual;
+    }
+
+    public String getObfuscated() {
+        return obfuscated;
+    }
+    
+    public String getActual() {
+        return actual;
+    }
+    
+    public void addMethod(String obfuscated, String actual) {
+        List<String> m = methods.get(obfuscated);
+        if (m == null) {
+            m = new ArrayList<>();
+            methods.put(obfuscated, m);
+        }
+        m.add(actual);
+    }
+    
+    public List<String> mapMethod(String obfuscated) {
+        List<String> m = methods.get(obfuscated);
+        if (m == null) {
+            return new ArrayList<>();
+        }
+        return m;
+    }
+    
+    @Override
+    public String toString() {
+        return getObfuscated() + "->" + getActual();
+    }
+
+}
diff --git a/src/main/java/com/sk89q/warmroast/DataViewServlet.java b/src/main/java/com/sk89q/warmroast/DataViewServlet.java
new file mode 100644
index 0000000..205dd3e
--- /dev/null
+++ b/src/main/java/com/sk89q/warmroast/DataViewServlet.java
@@ -0,0 +1,76 @@
+/*
+ * WarmRoast
+ * Copyright (C) 2013 Albert Pham <http://www.sk89q.com>
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+package com.sk89q.warmroast;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.Collection;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+public class DataViewServlet extends HttpServlet {
+    
+    private static final long serialVersionUID = -2331397310804298286L;
+    
+    private final WarmRoast roast;
+
+    public DataViewServlet(WarmRoast roast) {
+        this.roast = roast;
+    }
+
+    @Override
+    protected void doGet(HttpServletRequest request,
+            HttpServletResponse response) throws ServletException, IOException {
+        response.setContentType("text/html; charset=utf-8");
+        response.setStatus(HttpServletResponse.SC_OK);
+        
+        PrintWriter w = response.getWriter();
+        w.println("<!DOCTYPE html><html><head><title>WarmRoast</title>");
+        w.println("<link rel=\"stylesheet\" type=\"text/css\" href=\"style.css\">");
+        w.println("</head><body>");
+        w.println("<h1>WarmRoast</h1>");
+        w.println("<div class=\"loading\">Downloading snapshot; please wait...</div>");
+        w.println("<div class=\"stack\" style=\"display: none\">");
+        synchronized (roast) {
+            Collection<StackNode> nodes = roast.getData().values();
+            for (StackNode node : nodes) {
+                w.println(node.toHtml(roast.getMapping()));
+            }
+            if (nodes.size() == 0) {
+                w.println("<p class=\"no-results\">There are no results. " +
+                		"(Thread filter does not match thread?)</p>");
+            }
+        }
+        w.println("</div>");
+        w.println("<p class=\"legend\">Legend: ");
+        w.println("<span class=\"matched\">Mapped</span> ");
+        w.println("<span class=\"multiple-matches\">Multiple Mappings</span> ");
+        w.println("</p>");
+        w.println("<div id=\"overlay\"></div>");
+        w.println("<p class=\"footer\">");
+        w.println("Icons from <a href=\"http://www.fatcow.com/\">FatCow</a> &mdash; ");
+        w.println("<a href=\"http://github.com/sk89q/warmroast\">github.com/sk89q/warmroast</a></p>");
+        w.println("<script src=\"//ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js\"></script>");
+        w.println("<script src=\"warmroast.js\"></script>");
+        w.println("</body></html>");
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/com/sk89q/warmroast/McpMapping.java b/src/main/java/com/sk89q/warmroast/McpMapping.java
new file mode 100644
index 0000000..5ef2ff9
--- /dev/null
+++ b/src/main/java/com/sk89q/warmroast/McpMapping.java
@@ -0,0 +1,112 @@
+/*
+ * WarmRoast
+ * Copyright (C) 2013 Albert Pham <http://www.sk89q.com>
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+package com.sk89q.warmroast;
+
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.apache.commons.io.FileUtils;
+
+import au.com.bytecode.opencsv.CSVReader;
+
+public class McpMapping {
+
+    private static final Pattern clPattern = 
+            Pattern.compile("CL: (?<obfuscated>[^ ]+) (?<actual>[^ ]+)");
+    private static final Pattern mdPattern = 
+            Pattern.compile("MD: (?<obfuscatedClass>[^ /]+)/(?<obfuscatedMethod>[^ ]+) " +
+            		"[^ ]+ (?<method>[^ ]+) [^ ]+");
+
+    private final Map<String, ClassMapping> classes = new HashMap<>();
+    private final Map<String, String> methods = new HashMap<>();
+    
+    public ClassMapping mapClass(String obfuscated) {
+        return classes.get(obfuscated);
+    }
+
+    public void read(File joinedFile, File methodsFile) throws IOException {
+        try (FileReader r = new FileReader(methodsFile)) {
+            try (CSVReader reader = new CSVReader(r)) {
+                List<String[]> entries = reader.readAll();
+                processMethodNames(entries);
+            }
+        }
+        
+        List<String> lines = FileUtils.readLines(joinedFile, "UTF-8");
+        processClasses(lines);
+        processMethods(lines);
+    }
+    
+    public String fromMethodId(String id) {
+        String method = methods.get(id);
+        if (method == null) {
+            return id;
+        }
+        return method;
+    }
+    
+    private void processMethodNames(List<String[]> entries) {
+        boolean first = true;
+        for (String[] entry : entries) {
+            if (entry.length < 2) {
+                continue;
+            }
+            if (first) { // Header
+                first = false;
+                continue;
+            }
+            methods.put(entry[0], entry[1]);
+        }
+    }
+    
+    private void processClasses(List<String> lines) {
+        for (String line : lines) {
+            Matcher m = clPattern.matcher(line);
+            if (m.matches()) {
+                String obfuscated = m.group("obfuscated");
+                String actual = m.group("actual").replace("/", ".");
+                classes.put(obfuscated, new ClassMapping(obfuscated, actual));
+            }
+        }
+    }
+    
+    private void processMethods(List<String> lines) {
+        for (String line : lines) {
+            Matcher m = mdPattern.matcher(line);
+            if (m.matches()) {
+                String obfuscatedClass = m.group("obfuscatedClass");
+                String obfuscatedMethod = m.group("obfuscatedMethod");
+                String method = m.group("method");
+                String methodId = method.substring(method.lastIndexOf('/') + 1);
+                ClassMapping mapping = mapClass(obfuscatedClass);
+                if (mapping != null) {
+                    mapping.addMethod(obfuscatedMethod, 
+                            fromMethodId(methodId));
+                }
+            }
+        }
+    }
+
+}
diff --git a/src/main/java/com/sk89q/warmroast/RoastOptions.java b/src/main/java/com/sk89q/warmroast/RoastOptions.java
new file mode 100644
index 0000000..edb6a0e
--- /dev/null
+++ b/src/main/java/com/sk89q/warmroast/RoastOptions.java
@@ -0,0 +1,49 @@
+/*
+ * WarmRoast
+ * Copyright (C) 2013 Albert Pham <http://www.sk89q.com>
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.warmroast;
+
+import com.beust.jcommander.Parameter;
+
+public class RoastOptions {
+    
+    @Parameter(names = { "-h", "--help" }, help = true)
+    public boolean help;
+
+    @Parameter(names = { "--bind" }, description = "The address to bind the HTTP server to")
+    public String bindAddress = "0.0.0.0";
+
+    @Parameter(names = { "-p", "--port" }, description = "The port to bind the HTTP server to")
+    public Integer port = 23000;
+
+    @Parameter(names = { "--pid" }, description = "The PID of the VM to attach to")
+    public Integer pid;
+
+    @Parameter(names = { "--name" }, description = "The name of the VM to attach to")
+    public String vmName;
+
+    @Parameter(names = { "-t", "--thread" }, description = "Optionally specify a thread to log only")
+    public String threadName;
+
+    @Parameter(names = { "-m", "--mappings" }, description = "A directory with joined.srg and methods.csv")
+    public String mappingsDir;
+
+    @Parameter(names = { "--interval" }, description = "The sample rate, in milliseconds")
+    public Integer interval = 100;
+
+}
diff --git a/src/main/java/com/sk89q/warmroast/StackNode.java b/src/main/java/com/sk89q/warmroast/StackNode.java
new file mode 100644
index 0000000..216ca5f
--- /dev/null
+++ b/src/main/java/com/sk89q/warmroast/StackNode.java
@@ -0,0 +1,162 @@
+/*
+ * WarmRoast
+ * Copyright (C) 2013 Albert Pham <http://www.sk89q.com>
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+package com.sk89q.warmroast;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class StackNode implements Comparable<StackNode> {
+    
+    private final String name;
+    private final Map<String, StackNode> children = new HashMap<>();
+    private long totalTime;
+
+    public StackNode(String name) {
+        this.name = name;
+    }
+    
+    public String getName() {
+        return name;
+    }
+    
+    public String getNameHtml(McpMapping mapping) {
+        return escapeHtml(getName());
+    }
+
+    public Collection<StackNode> getChildren() {
+        List<StackNode> list = new ArrayList<>(children.values());
+        Collections.sort(list);
+        return list;
+    }
+    
+    public StackNode getChild(String name) {
+        StackNode child = children.get(name);
+        if (child == null) {
+            child = new StackNode(name);
+            children.put(name, child);
+        }
+        return child;
+    }
+    
+    public StackNode getChild(String className, String methodName) {
+        StackTraceNode node = new StackTraceNode(className, methodName);
+        StackNode child = children.get(node.getName());
+        if (child == null) {
+            child = node;
+            children.put(node.getName(), node);
+        }
+        return child;
+    }
+    
+    public long getTotalTime() {
+        return totalTime;
+    }
+
+    public void log(long time) {
+        totalTime += time;
+    }
+    
+    private void log(StackTraceElement[] elements, int skip, long time) {
+        log(time);
+        
+        if (elements.length - skip == 0) {
+            return;
+        }
+        
+        StackTraceElement bottom = elements[elements.length - (skip + 1)];
+        getChild(bottom.getClassName(), bottom.getMethodName())
+                .log(elements, skip + 1, time);
+    }
+    
+    public void log(StackTraceElement[] elements, long time) {
+        log(elements, 0, time);
+    }
+
+    @Override
+    public int compareTo(StackNode o) {
+        return getName().compareTo(o.getName());
+    }
+    
+    private void writeHtml(StringBuilder builder, McpMapping mapping, long totalTime) {
+        builder.append("<div class=\"node collapsed\">");
+        builder.append("<div class=\"name\">");
+        builder.append(getNameHtml(mapping));
+        builder.append("<span class=\"percent\">");
+        builder
+                .append(String.format("%.2f", getTotalTime() / (double) totalTime * 100))
+                .append("%");
+        builder.append("</span>");
+        builder.append("<span class=\"time\">");
+        builder.append(getTotalTime()).append("ms");
+        builder.append("</span>");
+        builder.append("<span class=\"bar\">");
+        builder.append("<span class=\"bar-inner\" style=\"width:")
+                .append(String.format("%.2f", getTotalTime() / (double) totalTime * 100))
+                .append("%\">");
+        builder.append("</span>");
+        builder.append("</span>");
+        builder.append("</div>");
+        builder.append("<ul class=\"children\">");
+        for (StackNode child : getChildren()) {
+            builder.append("<li>");
+            child.writeHtml(builder, mapping, totalTime);
+            builder.append("</li>");
+        }
+        builder.append("</ul>");
+        builder.append("</div>");
+    }
+
+    public String toHtml(McpMapping mapping) {
+        StringBuilder builder = new StringBuilder();
+        writeHtml(builder, mapping, getTotalTime());
+        return builder.toString();
+    }
+    
+    private void writeString(StringBuilder builder, int indent) {
+        StringBuilder b = new StringBuilder();
+        for (int i = 0; i < indent; i++) {
+            b.append(" ");
+        }
+        String padding = b.toString();
+        
+        for (StackNode child : getChildren()) {
+            builder.append(padding).append(child.getName());
+            builder.append(" ");
+            builder.append(getTotalTime()).append("ms");
+            builder.append("\n");
+            child.writeString(builder, indent + 1);
+        }
+    }
+    
+    @Override
+    public String toString() {
+        StringBuilder builder = new StringBuilder();
+        writeString(builder, 0);
+        return builder.toString();
+    }
+    
+    protected static String escapeHtml(String str) {
+        return str.replace("&", "&amp;").replace("<", "&lt;").replace(">", "&gt;");
+    }
+
+}
diff --git a/src/main/java/com/sk89q/warmroast/StackTraceNode.java b/src/main/java/com/sk89q/warmroast/StackTraceNode.java
new file mode 100644
index 0000000..1857cd1
--- /dev/null
+++ b/src/main/java/com/sk89q/warmroast/StackTraceNode.java
@@ -0,0 +1,96 @@
+/*
+ * WarmRoast
+ * Copyright (C) 2013 Albert Pham <http://www.sk89q.com>
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+package com.sk89q.warmroast;
+
+import java.util.List;
+
+public class StackTraceNode extends StackNode {
+    
+    private final String className;
+    private final String methodName;
+
+    public StackTraceNode(String className, String methodName) {
+        super(className + "." + methodName + "()");
+        this.className = className;
+        this.methodName = methodName;
+    }
+
+    public String getClassName() {
+        return className;
+    }
+
+    public String getMethodName() {
+        return methodName;
+    }
+    
+    @Override
+    public String getNameHtml(McpMapping mapping) {
+        ClassMapping classMapping = mapping.mapClass(getClassName());
+        if (classMapping != null) {
+            String className = "<span class=\"matched\" title=\"" + 
+                    escapeHtml(getClassName()) + "\">" +
+                    escapeHtml(classMapping.getActual()) + "</span>";
+            
+            List<String> actualMethods = classMapping.mapMethod(getMethodName());
+            if (actualMethods.size() == 0) {
+                return className + "." + escapeHtml(getMethodName()) + "()";
+            } else if (actualMethods.size() == 1) {
+                return className + 
+                        ".<span class=\"matched\" title=\"" + 
+                        escapeHtml(getMethodName()) + "\">" + 
+                        escapeHtml(actualMethods.get(0)) + "</span>()";
+            } else {
+                StringBuilder builder = new StringBuilder();
+                boolean first = true;
+                for (String m : actualMethods) {
+                    if (!first) {
+                        builder.append(" ");
+                    }
+                    builder.append(m);
+                    first = false;
+                }
+                return className + 
+                        ".<span class=\"multiple-matches\" title=\"" + 
+                            builder.toString() + "\">" + escapeHtml(getMethodName()) + "</span>()";
+            }
+        } else {
+            String actualMethod = mapping.fromMethodId(getMethodName());
+            if (actualMethod == null) {
+                return escapeHtml(getClassName()) + "." + escapeHtml(getMethodName()) + "()";
+            } else {
+                return className + 
+                        ".<span class=\"matched\" title=\"" + 
+                        escapeHtml(getMethodName()) + "\">" + 
+                        escapeHtml(actualMethod) + "</span>()";
+            }
+        }
+    }
+
+    @Override
+    public int compareTo(StackNode o) {
+        if (getTotalTime() == o.getTotalTime()) {
+            return 0;
+        } else if (getTotalTime()> o.getTotalTime()) {
+            return -1;
+        } else {
+            return 1;
+        }
+    }
+
+}
diff --git a/src/main/java/com/sk89q/warmroast/WarmRoast.java b/src/main/java/com/sk89q/warmroast/WarmRoast.java
new file mode 100644
index 0000000..6ddd9ca
--- /dev/null
+++ b/src/main/java/com/sk89q/warmroast/WarmRoast.java
@@ -0,0 +1,309 @@
+/*
+ * WarmRoast
+ * Copyright (C) 2013 Albert Pham <http://www.sk89q.com>
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+package com.sk89q.warmroast;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.lang.management.ManagementFactory;
+import java.lang.management.ThreadInfo;
+import java.lang.management.ThreadMXBean;
+import java.net.InetSocketAddress;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.SortedMap;
+import java.util.Timer;
+import java.util.TimerTask;
+import java.util.TreeMap;
+
+import javax.management.MBeanServerConnection;
+import javax.management.MalformedObjectNameException;
+import javax.management.ObjectName;
+import javax.management.remote.JMXConnector;
+import javax.management.remote.JMXConnectorFactory;
+import javax.management.remote.JMXServiceURL;
+
+import org.eclipse.jetty.server.Server;
+import org.eclipse.jetty.server.handler.HandlerList;
+import org.eclipse.jetty.server.handler.ResourceHandler;
+import org.eclipse.jetty.servlet.ServletContextHandler;
+import org.eclipse.jetty.servlet.ServletHolder;
+
+import com.beust.jcommander.JCommander;
+import com.sun.tools.attach.AgentInitializationException;
+import com.sun.tools.attach.AgentLoadException;
+import com.sun.tools.attach.AttachNotSupportedException;
+import com.sun.tools.attach.VirtualMachine;
+import com.sun.tools.attach.VirtualMachineDescriptor;
+
+public class WarmRoast extends TimerTask {
+
+    private static final String SEPARATOR = 
+            "------------------------------------------------------------------------";
+    
+    private final int interval;
+    private final VirtualMachine vm;
+    private final Timer timer = new Timer("Roast Pan", true);
+    private final McpMapping mapping = new McpMapping();
+    private final SortedMap<String, StackNode> nodes = new TreeMap<>();
+    private JMXConnector connector;
+    private MBeanServerConnection mbsc;
+    private ThreadMXBean threadBean;
+    private String filterThread;
+    
+    public WarmRoast(VirtualMachine vm, int interval) {
+        this.vm = vm;
+        this.interval = interval;
+    }
+    
+    public Map<String, StackNode> getData() {
+        return nodes;
+    }
+    
+    private StackNode getNode(String name) {
+        StackNode node = nodes.get(name);
+        if (node == null) {
+            node = new StackNode(name);
+            nodes.put(name, node);
+        }
+        return node;
+    }
+    
+    public McpMapping getMapping() {
+        return mapping;
+    }
+    
+    public String getFilterThread() {
+        return filterThread;
+    }
+
+    public void setFilterThread(String filterThread) {
+        this.filterThread = filterThread;
+    }
+
+    public void connect() 
+            throws IOException, AgentLoadException, AgentInitializationException {
+        // Load the agent
+        String connectorAddr = vm.getAgentProperties().getProperty(
+                "com.sun.management.jmxremote.localConnectorAddress");
+        if (connectorAddr == null) {
+            String agent = vm.getSystemProperties().getProperty("java.home")
+                    + File.separator + "lib" + File.separator
+                    + "management-agent.jar";
+            vm.loadAgent(agent);
+            connectorAddr = vm.getAgentProperties().getProperty(
+                    "com.sun.management.jmxremote.localConnectorAddress");
+        }
+
+        // Connect
+        JMXServiceURL serviceURL = new JMXServiceURL(connectorAddr);
+        connector = JMXConnectorFactory.connect(serviceURL);
+        mbsc = connector.getMBeanServerConnection();
+        try {
+            threadBean = getThreadMXBean();
+        } catch (MalformedObjectNameException e) {
+            throw new IOException("Bad MX bean name", e);
+        }
+    }
+
+    private ThreadMXBean getThreadMXBean() 
+            throws IOException, MalformedObjectNameException {
+        ObjectName objName = new ObjectName(ManagementFactory.THREAD_MXBEAN_NAME);
+        Set<ObjectName> mbeans = mbsc.queryNames(objName, null);
+        for (ObjectName name : mbeans) {
+            return ManagementFactory.newPlatformMXBeanProxy(
+                    mbsc, name.toString(), ThreadMXBean.class);
+        }
+        throw new IOException("No thread MX bean found");
+    }
+
+    @Override
+    public synchronized void run() {
+        ThreadInfo[] threadDumps = threadBean.dumpAllThreads(false, false);
+        for (ThreadInfo threadInfo : threadDumps) {
+            String threadName = threadInfo.getThreadName();
+            StackTraceElement[] stack = threadInfo.getStackTrace();
+            
+            if (threadName == null || stack == null) {
+                continue;
+            }
+            
+            if (filterThread != null && !filterThread.equals(threadName)) {
+                continue;
+            }
+            
+            StackNode node = getNode(threadName);
+            node.log(stack, interval);
+        }
+    }
+
+    public void start(InetSocketAddress address) throws Exception {
+        timer.scheduleAtFixedRate(this, interval, interval);
+        
+        Server server = new Server(address);
+
+        ServletContextHandler context = new ServletContextHandler();
+        context.setContextPath("/");
+        context.addServlet(new ServletHolder(new DataViewServlet(this)), "/stack");
+
+        ResourceHandler resources = new ResourceHandler();
+        String filesDir = WarmRoast.class.getResource("/www").toExternalForm();
+        resources.setResourceBase(filesDir);
+        resources.setDirectoriesListed(true);
+        resources.setWelcomeFiles(new String[]{ "index.html" });
+ 
+        HandlerList handlers = new HandlerList();
+        handlers.addHandler(context);
+        handlers.addHandler(resources);
+        server.setHandler(handlers);
+
+        server.start();
+        server.join();
+    }
+
+    public static void main(String[] args) throws AgentLoadException {
+        RoastOptions opt = new RoastOptions();
+        JCommander jc = new JCommander(opt, args);
+        jc.setProgramName("warmroast");
+        
+        if (opt.help) {
+            jc.usage();
+            System.exit(0);
+        }
+
+        System.err.println(SEPARATOR);
+        System.err.println("WarmRoast");
+        System.err.println("http://github.com/sk89q/warmroast");
+        System.err.println(SEPARATOR);
+        System.err.println("");
+        
+        VirtualMachine vm = null;
+        
+        if (opt.pid != null) {
+            try {
+                vm = VirtualMachine.attach(String.valueOf(opt.pid));
+                System.err.println("Attaching to PID " + opt.pid + "...");
+            } catch (AttachNotSupportedException | IOException e) {
+                System.err.println("Failed to attach VM by PID " + opt.pid);
+                System.exit(1);
+            }
+        } else if (opt.vmName != null) {
+            for (VirtualMachineDescriptor desc : VirtualMachine.list()) {
+                if (desc.displayName().contains(opt.vmName)) {
+                    try {
+                        vm = VirtualMachine.attach(desc);
+                        System.err.println("Attaching to '" + desc.displayName() + "'...");
+                        
+                        break;
+                    } catch (AttachNotSupportedException | IOException e) {
+                        System.err.println("Failed to attach VM by name '" + opt.vmName + "'");
+                        System.exit(1);
+                    }
+                }
+            }
+        }
+        
+        if (vm == null) {
+            
+            List<VirtualMachineDescriptor> descriptors = VirtualMachine.list();
+            System.err.println("Choose a VM:");
+            
+            Collections.sort(descriptors, new Comparator<VirtualMachineDescriptor>() {
+                @Override
+                public int compare(VirtualMachineDescriptor o1,
+                        VirtualMachineDescriptor o2) {
+                    return o1.displayName().compareTo(o2.displayName());
+                }
+            });
+            
+            // Print list of VMs
+            int i = 1;
+            for (VirtualMachineDescriptor desc : descriptors) {
+                System.err.println("[" + (i++) + "] " + desc.displayName());
+            }
+            
+            // Ask for choice
+            System.err.println("");
+            System.err.print("Enter choice #: ");
+            BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
+            String s;
+            try {
+                s = reader.readLine();
+            } catch (IOException e) {
+                return;
+            }
+            
+            // Get the VM
+            try {
+                int choice = Integer.parseInt(s) - 1;
+                if (choice < 0 || choice >= descriptors.size()) {
+                    System.err.println("");
+                    System.err.println("Given choice is out of range.");
+                    System.exit(1);
+                }
+                vm = VirtualMachine.attach(descriptors.get(choice));
+            } catch (NumberFormatException e) {
+                System.err.println("");
+                System.err.println("That's not a number. Bye.");
+                System.exit(1);
+            } catch (AttachNotSupportedException | IOException e) {
+                System.err.println("");
+                System.err.println("Failed to attach VM");
+                System.exit(1);
+            }
+        }
+        
+        InetSocketAddress address = new InetSocketAddress(opt.bindAddress, opt.port);
+
+        WarmRoast roast = new WarmRoast(vm, opt.interval);
+        if (opt.mappingsDir != null) {
+            File dir = new File(opt.mappingsDir);
+            File joined = new File(dir, "joined.srg");
+            File methods = new File(dir, "methods.csv");
+            try {
+                roast.getMapping().read(joined, methods);
+            } catch (IOException e) {
+                System.err.println(
+                        "Failed to read the mappings files (joined.srg, methods.csv) " +
+                        "from " + dir.getAbsolutePath() + ": " + e.getMessage());
+                System.exit(2);
+            }
+        }
+        
+        roast.setFilterThread(opt.threadName);
+
+        System.err.println(SEPARATOR);
+
+        System.err.println("Starting a server on " + address.toString() + "...");
+        System.err.println("Once the server starts (shortly), visit the URL in your browser.");
+        
+        try {
+            roast.connect();
+            roast.start(address);
+        } catch (Throwable t) {
+            t.printStackTrace();
+            System.exit(3);
+        }
+    }
+
+}
-- 
cgit