Source Code Cross Referenced for sandStormProfiler.java in  » Web-Server » Rimfaxe-Web-Server » seda » sandStorm » internal » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Web Server » Rimfaxe Web Server » seda.sandStorm.internal 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* 
002:         * Copyright (c) 2001 by Matt Welsh and The Regents of the University of 
003:         * California. All rights reserved.
004:         *
005:         * Permission to use, copy, modify, and distribute this software and its
006:         * documentation for any purpose, without fee, and without written agreement is
007:         * hereby granted, provided that the above copyright notice and the following
008:         * two paragraphs appear in all copies of this software.
009:         * 
010:         * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
011:         * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
012:         * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
013:         * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
014:         * 
015:         * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
016:         * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
017:         * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
018:         * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
019:         * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
020:         *
021:         * Author: Matt Welsh <mdw@cs.berkeley.edu>
022:         * 
023:         */
024:
025:        package seda.sandStorm.internal;
026:
027:        import seda.sandStorm.api.*;
028:        import seda.sandStorm.main.*;
029:        import java.io.*;
030:        import java.util.*;
031:
032:        /**
033:         * sandStormProfiler is an implementation of the ProfilerIF interface
034:         * for Sandstorm. It is implemented using a thread that periodically
035:         * samples the set of ProfilableIF's registered with it, and outputs
036:         * the profile to a file.
037:         *
038:         * @author Matt Welsh
039:         * @see ProfilerIF
040:         * @see ProfilableIF
041:         */
042:        class sandStormProfiler extends Thread implements  sandStormConst,
043:                ProfilerIF {
044:
045:            private int delay;
046:            private PrintWriter pw;
047:            private Vector profilables;
048:            private boolean started = false;
049:            private StageGraph graphProfiler;
050:
051:            sandStormProfiler(ManagerIF mgr) throws IOException {
052:                graphProfiler = new StageGraph(mgr);
053:                SandstormConfig config = mgr.getConfig();
054:                delay = config.getInt("global.profile.delay");
055:                String filename = config.getString("global.profile.filename");
056:                if (config.getBoolean("global.profile.enable")) {
057:                    pw = new PrintWriter(new FileWriter(filename, true));
058:                }
059:                profilables = new Vector(1);
060:            }
061:
062:            /**
063:             * Returns true if the profiler is enabled.
064:             */
065:            public boolean enabled() {
066:                return started;
067:            }
068:
069:            /**
070:             * Add a class to this profiler.
071:             */
072:            public void add(String name, ProfilableIF pr) {
073:                if (pr == null)
074:                    return;
075:                if (pw == null)
076:                    return;
077:                synchronized (profilables) {
078:                    pw.println("# Registered " + profilables.size() + " "
079:                            + name);
080:                    profilables.addElement(new profile(name, pr));
081:                }
082:            }
083:
084:            public void run() {
085:
086:                if (pw == null)
087:                    return;
088:                started = true;
089:                pw.println("##### Profile started at "
090:                        + (new Date()).toString());
091:                pw.println("##### Sample delay " + delay + " msec");
092:                Runtime r = Runtime.getRuntime();
093:
094:                while (true) {
095:
096:                    long totalmem = r.totalMemory() / 1024;
097:                    long freemem = r.freeMemory() / 1024;
098:
099:                    pw.print("totalmem(kb) " + totalmem + " freemem(kb) "
100:                            + freemem + " ");
101:
102:                    synchronized (profilables) {
103:                        if (profilables.size() > 0) {
104:                            for (int i = 0; i < profilables.size(); i++) {
105:                                profile p = (profile) profilables.elementAt(i);
106:                                pw.print("pr" + i + " " + p.pr.profileSize()
107:                                        + " ");
108:                            }
109:                        }
110:                    }
111:                    pw.println("");
112:                    pw.flush();
113:
114:                    try {
115:                        Thread.currentThread().sleep(delay);
116:                    } catch (InterruptedException ie) {
117:                    }
118:                }
119:            }
120:
121:            public StageGraph getGraphProfiler() {
122:                return graphProfiler;
123:            }
124:
125:            class profile {
126:                String name;
127:                ProfilableIF pr;
128:
129:                profile(String name, ProfilableIF pr) {
130:                    this.name = name;
131:                    this.pr = pr;
132:                }
133:            }
134:
135:        }
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