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maint: Update copyright notices for release.
author John W. Eaton <jwe@octave.org>
date Wed, 23 Oct 2013 22:09:27 -0400
parents bc924baa2c4e
children 4197fc428c7d
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17744
d63878346099 maint: Update copyright notices for release.
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1 ## Copyright (C) 2012-2013 Daniel Kraft
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 3 of the License, or (at
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8 ## your option) any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Command} {} profile on
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21 ## @deftypefnx {Command} {} profile off
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22 ## @deftypefnx {Command} {} profile resume
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23 ## @deftypefnx {Command} {} profile clear
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24 ## @deftypefnx {Function File} {@var{S} =} profile ("status")
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25 ## @deftypefnx {Function File} {@var{T} =} profile ("info")
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26 ## Control the built-in profiler.
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27 ##
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28 ## @table @code
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29 ## @item profile on
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30 ## Start the profiler, clearing all previously collected data if there
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31 ## is any.
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32 ##
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33 ## @item profile off
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34 ## Stop profiling. The collected data can later be retrieved and examined
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35 ## with calls like @code{S = profile ("info")}.
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36 ##
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37 ## @item profile clear
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38 ## Clear all collected profiler data.
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39 ##
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40 ## @item profile resume
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41 ## Restart profiling without cleaning up the old data and instead
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42 ## all newly collected statistics are added to the already existing ones.
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43 ##
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44 ## @item @var{S} = profile ("status")
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45 ## Return a structure filled with certain information about the current status
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46 ## of the profiler. At the moment, the only field is @code{ProfilerStatus}
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47 ## which is either @qcode{"on"} or @qcode{"off"}.
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48 ##
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49 ## @item @var{T} = profile ("info")
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50 ## Return the collected profiling statistics in the structure @var{T}.
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51 ## The flat profile is returned in the field @code{FunctionTable} which is an
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52 ## array of structures, each entry corresponding to a function which was called
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53 ## and for which profiling statistics are present. Furthermore, the field
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54 ## @code{Hierarchical} contains the hierarchical call-tree. Each node
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55 ## has an index into the @code{FunctionTable} identifying the function it
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56 ## corresponds to as well as data fields for number of calls and time spent
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57 ## at this level in the call-tree.
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58 ## @seealso{profshow, profexplore}
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59 ## @end table
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60 ## @end deftypefn
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61
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62 ## Built-in profiler.
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63 ## Author: Daniel Kraft <d@domob.eu>
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64
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65 function retval = profile (option)
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66
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67 if (nargin != 1)
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68 print_usage ();
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69 endif
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70
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71 switch (option)
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72 case "on"
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73 __profiler_reset__ ();
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74 __profiler_enable__ (true);
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75
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76 case "off"
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77 __profiler_enable__ (false);
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78
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79 case "clear"
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80 __profiler_reset__ ();
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81
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82 case "resume"
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83 __profiler_enable__ (true);
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84
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85 case "status"
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86 enabled = __profiler_enable__ ();
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87 if (enabled)
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88 enabled = "on";
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89 else
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90 enabled = "off";
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91 endif
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92 retval = struct ("ProfilerStatus", enabled);
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93
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94 case "info"
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95 [flat, tree] = __profiler_data__ ();
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96 retval = struct ("FunctionTable", flat, "Hierarchical", tree);
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97
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98 otherwise
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99 warning ("profile: Unrecognized option '%s'", option);
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100 print_usage ();
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101
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102 endswitch
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103
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104 endfunction
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105
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106
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107 %!demo
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108 %! profile on;
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109 %! A = rand (100);
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110 %! B = expm (A);
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111 %! profile off;
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112 %! profile resume;
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113 %! C = sqrtm (A);
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114 %! profile off;
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115 %! T = profile ("info");
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116 %! profshow (T);
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117
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118 %!test
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119 %! on_struct.ProfilerStatus = "on";
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120 %! off_struct.ProfilerStatus = "off";
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121 %! profile ("on");
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122 %! result = logm (rand (200) + 10 * eye (200));
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123 %! assert (profile ("status"), on_struct);
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124 %! profile ("off");
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125 %! assert (profile ("status"), off_struct);
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126 %! profile ("resume");
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127 %! result = logm (rand (200) + 10 * eye (200));
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128 %! profile ("off");
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129 %! assert (profile ("status"), off_struct);
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130 %! info = profile ("info");
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131 %! assert (isstruct (info));
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132 %! assert (size (info), [1, 1]);
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133 %! assert (fieldnames (info), {"FunctionTable"; "Hierarchical"});
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134 %! ftbl = info.FunctionTable;
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135 %! assert (fieldnames (ftbl), {"FunctionName"; "TotalTime"; "NumCalls"; "IsRecursive"; "Parents"; "Children"});
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136 %! hier = info.Hierarchical;
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137 %! assert (fieldnames (hier), {"Index"; "SelfTime"; "TotalTime"; "NumCalls"; "Children"});
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138 %! profile ("clear");
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139 %! info = profile ("info");
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140 %! assert (isstruct (info));
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141 %! assert (size (info), [1, 1]);
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142 %! assert (fieldnames (info), {"FunctionTable"; "Hierarchical"});
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143 %! ftbl = info.FunctionTable;
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144 %! assert (size (ftbl), [0, 1]);
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145 %! assert (fieldnames (ftbl), {"FunctionName"; "TotalTime"; "NumCalls"; "IsRecursive"; "Parents"; "Children"});
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146 %! hier = info.Hierarchical;
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147 %! assert (size (hier), [0, 1]);
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148 %! assert (fieldnames (hier), {"Index"; "SelfTime"; "NumCalls"; "Children"});
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149
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150 %% Test input validation
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151 %!error profile ()
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152 %!error profile ("on", 2)
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153 %!error profile ("INVALID_OPTION")
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154