source: trunk/abcl/src/org/armedbear/lisp/Profiler.java @ 12557

Last change on this file since 12557 was 12513, checked in by ehuelsmann, 15 years ago

Remove 'private' keyword to eliminate the Java requirement

for the compiler to generate synthetic accessors: functions that
don't appear in the source but do appear in the class file.

Patch by: Douglas Miles <dmiles _at_ users.sf.net>

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 5.5 KB
Line 
1/*
2 * Profiler.java
3 *
4 * Copyright (C) 2003-2005 Peter Graves
5 * $Id: Profiler.java 12513 2010-03-02 22:35:36Z ehuelsmann $
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
20 *
21 * As a special exception, the copyright holders of this library give you
22 * permission to link this library with independent modules to produce an
23 * executable, regardless of the license terms of these independent
24 * modules, and to copy and distribute the resulting executable under
25 * terms of your choice, provided that you also meet, for each linked
26 * independent module, the terms and conditions of the license of that
27 * module.  An independent module is a module which is not derived from
28 * or based on this library.  If you modify this library, you may extend
29 * this exception to your version of the library, but you are not
30 * obligated to do so.  If you do not wish to do so, delete this
31 * exception statement from your version.
32 */
33
34package org.armedbear.lisp;
35
36import static org.armedbear.lisp.Lisp.*;
37
38public class Profiler
39{
40    static int sleep = 1;
41
42    // ### %start-profiler
43    // %start-profiler type granularity
44    public static final Primitive _START_PROFILER =
45        new Primitive("%start-profiler", PACKAGE_PROF, false)
46    {
47        @Override
48        public LispObject execute(LispObject first, LispObject second)
49
50        {
51            final LispThread thread = LispThread.currentThread();
52            Stream out = getStandardOutput();
53            out.freshLine();
54            if (profiling) {
55                out._writeLine("; Profiler already started.");
56            } else {
57                if (first == Keyword.TIME)
58                    sampling = true;
59                else if (first == Keyword.COUNT_ONLY)
60                    sampling = false;
61                else
62                    return error(new LispError(
63                        "%START-PROFILER: argument must be either :TIME or :COUNT-ONLY"));
64                Package[] packages = Packages.getAllPackages();
65                for (int i = 0; i < packages.length; i++) {
66                    Package pkg = packages[i];
67                    Symbol[] symbols = pkg.symbols();
68                    for (int j = 0; j < symbols.length; j++) {
69                        Symbol symbol = symbols[j];
70                        LispObject object = symbol.getSymbolFunction();
71                        if (object != null) {
72                            object.setCallCount(0);
73                            object.setHotCount(0);
74                            if (object instanceof StandardGenericFunction) {
75                                LispObject methods =
76                                    PACKAGE_MOP.intern("GENERIC-FUNCTION-METHODS").execute(object);
77                                while (methods != NIL) {
78                                    StandardMethod method = (StandardMethod) methods.car();
79                                    method.getFunction().setCallCount(0);
80                                    method.getFunction().setHotCount(0);
81                                    methods = methods.cdr();
82                                }
83                            }
84                        }
85                    }
86                }
87                if (sampling) {
88                    sleep = Fixnum.getValue(second);
89                    Runnable profilerRunnable = new Runnable() {
90                        public void run()
91                        {
92                            profiling = true; // make sure we don't fall through on the first iteration
93                            while (profiling) {
94                                try {
95                                    thread.incrementCallCounts();
96                                    Thread.sleep(sleep);
97                                }
98                                //### FIXME exception
99                                catch (InterruptedException e) {
100                                    Debug.trace(e);
101                                }
102                            }
103                        }
104                    };
105                    Thread t = new Thread(profilerRunnable);
106                    // Maximum priority doesn't hurt:
107                    // we're sleeping all the time anyway
108                    t.setPriority(Thread.MAX_PRIORITY);
109                    new Thread(profilerRunnable).start();
110                }
111                out._writeLine("; Profiler started.");
112            }
113            return thread.nothing();
114        }
115    };
116
117    // ### stop-profiler
118    public static final Primitive STOP_PROFILER =
119        new Primitive("stop-profiler", PACKAGE_PROF, true)
120    {
121        @Override
122        public LispObject execute()
123        {
124            Stream out = getStandardOutput();
125            out.freshLine();
126            if (profiling) {
127                profiling = false;
128                out._writeLine("; Profiler stopped.");
129            } else
130                out._writeLine("; Profiler was not started.");
131            out._finishOutput();
132            return LispThread.currentThread().nothing();
133        }
134    };
135}
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