1 | /* |
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2 | * Profiler.java |
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3 | * |
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4 | * Copyright (C) 2003-2005 Peter Graves |
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5 | * $Id: Profiler.java 14497 2013-05-15 06:42:41Z rschlatte $ |
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6 | * |
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7 | * This program is free software; you can redistribute it and/or |
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8 | * modify it under the terms of the GNU General Public License |
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9 | * as published by the Free Software Foundation; either version 2 |
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10 | * of the License, or (at your option) any later version. |
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11 | * |
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12 | * This program is distributed in the hope that it will be useful, |
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 | * GNU General Public License for more details. |
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16 | * |
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17 | * You should have received a copy of the GNU General Public License |
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18 | * along with this program; if not, write to the Free Software |
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19 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 | * |
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21 | * As a special exception, the copyright holders of this library give you |
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22 | * permission to link this library with independent modules to produce an |
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23 | * executable, regardless of the license terms of these independent |
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24 | * modules, and to copy and distribute the resulting executable under |
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25 | * terms of your choice, provided that you also meet, for each linked |
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26 | * independent module, the terms and conditions of the license of that |
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27 | * module. An independent module is a module which is not derived from |
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28 | * or based on this library. If you modify this library, you may extend |
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29 | * this exception to your version of the library, but you are not |
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30 | * obligated to do so. If you do not wish to do so, delete this |
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31 | * exception statement from your version. |
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32 | */ |
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33 | |
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34 | package org.armedbear.lisp; |
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35 | |
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36 | import static org.armedbear.lisp.Lisp.*; |
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37 | |
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38 | public class Profiler |
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39 | { |
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40 | static int sleep = 1; |
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41 | |
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42 | // ### %start-profiler |
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43 | // %start-profiler type granularity |
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44 | public static final Primitive _START_PROFILER = |
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45 | new Primitive("%start-profiler", PACKAGE_PROF, false) |
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46 | { |
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47 | @Override |
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48 | public LispObject execute(LispObject first, LispObject second) |
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49 | |
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50 | { |
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51 | final LispThread thread = LispThread.currentThread(); |
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52 | Stream out = getStandardOutput(); |
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53 | out.freshLine(); |
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54 | if (profiling) { |
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55 | out._writeLine("; Profiler already started."); |
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56 | } else { |
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57 | if (first == Keyword.TIME) |
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58 | sampling = true; |
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59 | else if (first == Keyword.COUNT_ONLY) |
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60 | sampling = false; |
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61 | else |
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62 | return error(new LispError( |
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63 | "%START-PROFILER: argument must be either :TIME or :COUNT-ONLY")); |
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64 | Package[] packages = Packages.getAllPackages(); |
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65 | for (int i = 0; i < packages.length; i++) { |
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66 | Package pkg = packages[i]; |
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67 | Symbol[] symbols = pkg.symbols(); |
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68 | for (int j = 0; j < symbols.length; j++) { |
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69 | Symbol symbol = symbols[j]; |
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70 | LispObject object = symbol.getSymbolFunction(); |
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71 | if (object != null) { |
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72 | object.setCallCount(0); |
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73 | object.setHotCount(0); |
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74 | LispObject methods = null; |
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75 | if (object.typep(Symbol.STANDARD_GENERIC_FUNCTION) != NIL) { |
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76 | methods = |
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77 | Symbol.GENERIC_FUNCTION_METHODS.execute(object); |
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78 | } |
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79 | while (methods != null && methods != NIL) { |
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80 | LispObject method = methods.car(); |
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81 | LispObject function = |
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82 | Symbol.METHOD_FUNCTION.execute(method); |
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83 | if (function != NIL) { |
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84 | function.setCallCount(0); |
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85 | function.setHotCount(0); |
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86 | methods = methods.cdr(); |
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87 | } |
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88 | } |
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89 | } |
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90 | } |
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91 | } |
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92 | if (sampling) { |
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93 | sleep = Fixnum.getValue(second); |
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94 | Runnable profilerRunnable = new Runnable() { |
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95 | public void run() |
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96 | { |
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97 | profiling = true; // make sure we don't fall through on the first iteration |
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98 | while (profiling) { |
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99 | try { |
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100 | thread.incrementCallCounts(); |
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101 | Thread.sleep(sleep); |
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102 | } |
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103 | //### FIXME exception |
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104 | catch (InterruptedException e) { |
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105 | Debug.trace(e); |
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106 | } |
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107 | } |
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108 | } |
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109 | }; |
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110 | Thread t = new Thread(profilerRunnable); |
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111 | // Maximum priority doesn't hurt: |
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112 | // we're sleeping all the time anyway |
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113 | t.setPriority(Thread.MAX_PRIORITY); |
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114 | new Thread(profilerRunnable).start(); |
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115 | } |
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116 | out._writeLine("; Profiler started."); |
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117 | } |
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118 | return thread.nothing(); |
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119 | } |
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120 | }; |
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121 | |
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122 | // ### stop-profiler |
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123 | public static final Primitive STOP_PROFILER = |
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124 | new Primitive("stop-profiler", PACKAGE_PROF, true) |
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125 | { |
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126 | @Override |
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127 | public LispObject execute() |
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128 | { |
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129 | Stream out = getStandardOutput(); |
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130 | out.freshLine(); |
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131 | if (profiling) { |
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132 | profiling = false; |
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133 | out._writeLine("; Profiler stopped."); |
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134 | } else |
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135 | out._writeLine("; Profiler was not started."); |
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136 | out._finishOutput(); |
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137 | return LispThread.currentThread().nothing(); |
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138 | } |
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139 | }; |
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140 | } |
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