Source Code Cross Referenced for ProfilerManager.java in  » EJB-Server-resin-3.1.5 » resin » com » caucho » tools » profiler » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » EJB Server resin 3.1.5 » resin » com.caucho.tools.profiler 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright (c) 1998-2005 Caucho Technology -- all rights reserved
003:         *
004:         * This file is part of Resin(R) Open Source
005:         *
006:         * Each copy or derived work must preserve the copyright notice and this
007:         * notice unmodified.
008:         *
009:         * Resin Open Source is free software; you can redistribute it and/or modify
010:         * it under the terms of the GNU General Public License as published by
011:         * the Free Software Foundation; either version 2 of the License, or
012:         * (at your option) any later version.
013:         *
014:         * Resin Open Source is distributed in the hope that it will be useful,
015:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
016:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
017:         * of NON-INFRINGEMENT.  See the GNU General Public License for more
018:         * details.
019:         *
020:         * You should have received a copy of the GNU General Public License
021:         * along with Resin Open Source; if not, write to the
022:         *   Free SoftwareFoundation, Inc.
023:         *   59 Temple Place, Suite 330
024:         *   Boston, MA 02111-1307  USA
025:         *
026:         * @author Sam
027:         */
028:
029:        package com.caucho.tools.profiler;
030:
031:        import com.caucho.loader.EnvironmentLocal;
032:        import com.caucho.util.LruCache;
033:
034:        import java.util.Collection;
035:        import java.util.Comparator;
036:        import java.util.Iterator;
037:        import java.util.LinkedList;
038:        import java.util.Set;
039:        import java.util.TreeSet;
040:
041:        /**
042:         * The main entry point for profiling.  This class is used to obtain instances
043:         * of {@link ProfilerPoint}, which are then used during execution of code to
044:         * demarcate the code to be profiled.
045:         * <p/>
046:         * A {@link ProfilerManager} for the current {@link ClassLoader} is obtained
047:         * with {@link #getLocal()}.
048:         */
049:        public class ProfilerManager {
050:            private static final EnvironmentLocal<ProfilerManager> _local = new EnvironmentLocal<ProfilerManager>();
051:
052:            private ProfilerPoint _root;
053:
054:            private boolean _isEnabled = false;
055:
056:            private ProfilerManager() {
057:                new ProfilerAdmin(this );
058:
059:                _root = new ProfilerPoint(this , "");
060:            }
061:
062:            public static ProfilerManager getLocal() {
063:                synchronized (_local) {
064:                    ProfilerManager local = _local.get();
065:
066:                    if (local == null) {
067:                        local = new ProfilerManager();
068:                        _local.set(local);
069:                    }
070:
071:                    return local;
072:                }
073:            }
074:
075:            public ProfilerPoint getRoot() {
076:                return _root;
077:            }
078:
079:            public ProfilerPoint getProfilerPoint(String name) {
080:                return _root.addProfilerPoint(name);
081:            }
082:
083:            /**
084:             * Set to true to enable profiling, default false.
085:             */
086:            public void setEnabled(boolean isEnabled) {
087:                _isEnabled = isEnabled;
088:            }
089:
090:            public boolean isEnabled() {
091:                return _isEnabled;
092:            }
093:
094:            public void enable() {
095:                if (!_isEnabled) {
096:                    reset();
097:                    _isEnabled = true;
098:                }
099:            }
100:
101:            public void disable() {
102:                _isEnabled = false;
103:            }
104:
105:            public ProfilerPoint addProfilerPoint(String name) {
106:                return _root.addProfilerPoint(name);
107:            }
108:
109:            public ProfilerPoint getCategorizingProfilerPoint(String name) {
110:                return _root.addProfilerPoint(name);
111:            }
112:
113:            /**
114:             * Clear all profiling information.
115:             */
116:            public void reset() {
117:                _root.reset();
118:            }
119:
120:            public String toString() {
121:                return "ProfilerManager[" + getClass().getClassLoader() + "]";
122:            }
123:
124:        }
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