annotate scripts/general/profexplore.m @ 14138:72c96de7a403 stable

maint: update copyright notices for 2012
author John W. Eaton <jwe@octave.org>
date Mon, 02 Jan 2012 14:25:41 -0500
parents 9cae456085c2
children 190952239c2c
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72c96de7a403 maint: update copyright notices for 2012
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1 ## Copyright (C) 2012 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 {Function File} {} profexplore (@var{data})
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21 ## Interactively explore hierarchical profiler output.
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22 ##
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23 ## Assuming @var{data} is the structure with profile data returned by
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24 ## @code{profile ('info')}, this command opens an interactive prompt
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25 ## that can be used to explore the call-tree. Type @kbd{help} to get a list
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26 ## of possible commands.
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27 ## @seealso{profile, profshow}
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28 ## @end deftypefn
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29
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30 ## Built-in profiler.
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31 ## Author: Daniel Kraft <d@domob.eu>
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32
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33 function profexplore (data)
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34
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35 if (nargin ~= 1)
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36 print_usage ();
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37 endif
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38
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39 ## The actual work is done by a recursive worker function, since that
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40 ## is an easy way to traverse the tree datastructure. Here, we just check
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41 ## the arguments (already done) and give over to it.
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42
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43 __profexplore_worker (data.FunctionTable, data.Hierarchical, "Top\n", " ");
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44
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45 endfunction
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46
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47 ## This is the worker function. tree is the current subtree we want to
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48 ## display / explore. parents is a string containing the already 'rendered'
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49 ## data for the parents which is displayed on top of the list of current
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50 ## children. prefix is the prefix to add to each line rendered; this
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51 ## is just a string of spaces to get indentation right.
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52 ##
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53 ## Returning 0 indicates that the user requested to totally exit the
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54 ## explorer, thus also all higher levels should exit immediately. An integer
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55 ## greater zero indicates to exit that many levels since the user wants to go
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56 ## up (but not necessarily quit).
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57
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58 function rv = __profexplore_worker (fcn_table, tree, parents, prefix)
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59
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60 ## Sort children by total time.
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61 times = -[ tree.TotalTime ];
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62 [~, p] = sort (times);
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63 tree = tree(p);
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64
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65 while (true)
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66
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67 printf ("\n%s", parents);
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68 strings = cell (length (tree), 1);
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69 for i = 1 : length (tree)
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70 strings{i} = sprintf ("%s: %d calls, %.3f total, %.3f self", ...
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71 fcn_table(tree(i).Index).FunctionName, ...
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72 tree(i).NumCalls, ...
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73 tree(i).TotalTime, tree(i).SelfTime);
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74 printf ("%s%d) %s\n", prefix, i, strings{i});
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75 endfor
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76 printf ("\n");
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77
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78 cmd = input ("profexplore> ", "s");
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79 option = fix (str2double (cmd));
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80
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81 if (strcmp (cmd, "exit"))
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82 rv = 0;
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83 return;
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84 elseif (strcmp (cmd, "help"))
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85 printf ("\nCommands for profile explorer:\n\n");
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86 printf ("exit Return to Octave prompt.\n");
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87 printf ("help Display this help message.\n");
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88 printf ("up [N] Go up N levels, where N is an integer. Default is 1.\n");
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89 printf ("N Go down a level into option N.\n");
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90 elseif (~isnan (option))
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91 if (option < 1 || option > length (tree))
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92 printf ("The chosen option is out of range!\n");
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93 else
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94 newParents = sprintf ("%s%s%s\n", parents, prefix, strings{option});
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95 newPrefix = sprintf ("%s ", prefix);
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96
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97 rv = __profexplore_worker (fcn_table, tree(option).Children, ...
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98 newParents, newPrefix);
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99
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100 if (rv == 0)
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101 return;
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102 elseif (rv > 1)
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103 rv = rv - 1;
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104 return;
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105 else
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106 assert (rv == 1);
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107 ## It was requested to return to this level, so just stay.
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108 endif
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109 endif
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110 elseif (length (cmd) >= 2 && strcmp (substr (cmd, 1, 2), "up"))
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111 if (length (cmd) == 2)
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112 rv = 1;
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113 return;
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114 endif
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115
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116 if (length (cmd) > 3 && cmd(3) == ' ')
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117 opt = fix (str2double (substr (cmd, 3)));
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118 if (~isnan (opt) && opt > 0)
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119 rv = opt;
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120 return;
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121 endif
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122 endif
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123
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124 printf ("Invalid 'up' command. Type 'help' for further");
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125 printf (" information.\n");
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126 else
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127 printf ("Unrecognized input. Type 'help' to get a list of possible");
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128 printf (" commands.\n");
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129 endif
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130
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131 endwhile
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132 endfunction