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annotate libinterp/corefcn/profiler.cc @ 20654:b65888ec820e draft default tip gccjit

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dmalcom gcc jit import
author Stefan Mahr <dac922@gmx.de>
date Fri, 27 Feb 2015 16:59:36 +0100
parents 4197fc428c7d
children
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1 /*
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2
19731
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3 Copyright (C) 2014-2015 Julien Bect
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4 Copyright (C) 2012-2015 Daniel Kraft
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5
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6 This file is part of Octave.
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7
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8 Octave is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 3 of the License, or (at your
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11 option) any later version.
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12
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13 Octave is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with Octave; see the file COPYING. If not, see
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20 <http://www.gnu.org/licenses/>.
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21
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22 */
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23
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24 #ifdef HAVE_CONFIG_H
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25 #include <config.h>
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26 #endif
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27
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28 #include <iostream>
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29
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30 #include "defun.h"
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31 #include "oct-time.h"
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32 #include "ov-struct.h"
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33 #include "pager.h"
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34 #include "profiler.h"
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35
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36 profile_data_accumulator::stats::stats ()
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37 : time (0.0), calls (0), recursive (false),
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38 parents (), children ()
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39 {}
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40
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41 octave_value
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42 profile_data_accumulator::stats::function_set_value (const function_set& list)
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43 {
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44 const octave_idx_type n = list.size ();
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45
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46 RowVector retval (n);
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47 octave_idx_type i = 0;
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48 for (function_set::const_iterator p = list.begin (); p != list.end (); ++p)
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49 {
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50 retval(i) = *p;
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51 ++i;
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52 }
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53 assert (i == n);
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54
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55 return retval;
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56 }
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57
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58 profile_data_accumulator::tree_node::tree_node (tree_node* p, octave_idx_type f)
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59 : parent (p), fcn_id (f), children (), time (0.0), calls (0)
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60 {}
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61
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62 profile_data_accumulator::tree_node::~tree_node ()
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63 {
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64 for (child_map::iterator i = children.begin (); i != children.end (); ++i)
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65 delete i->second;
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66 }
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67
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68 profile_data_accumulator::tree_node*
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69 profile_data_accumulator::tree_node::enter (octave_idx_type fcn)
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70 {
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71 tree_node* retval;
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72
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73 child_map::iterator pos = children.find (fcn);
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74 if (pos == children.end ())
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75 {
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76 retval = new tree_node (this, fcn);
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77 children[fcn] = retval;
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78 }
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79 else
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80 retval = pos->second;
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81
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82 ++retval->calls;
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83 return retval;
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84 }
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85
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86 profile_data_accumulator::tree_node*
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87 profile_data_accumulator::tree_node::exit (octave_idx_type /* fcn */)
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88 {
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89 // FIXME: These assert statements don't make sense if profile() is called
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90 // from within a function hierarchy to begin with. See bug #39587.
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91 // assert (parent);
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92 // assert (fcn_id == fcn);
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93
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94 return parent;
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95 }
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96
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97 void
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98 profile_data_accumulator::tree_node::build_flat (flat_profile& data) const
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99 {
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100 // If this is not the top-level node, update profile entry for this function.
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101 if (fcn_id != 0)
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102 {
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103 stats& entry = data[fcn_id - 1];
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104
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105 entry.time += time;
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106 entry.calls += calls;
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107
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108 assert (parent);
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109 if (parent->fcn_id != 0)
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110 {
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111 entry.parents.insert (parent->fcn_id);
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112 data[parent->fcn_id - 1].children.insert (fcn_id);
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113 }
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114
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115 if (! entry.recursive)
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116 for (const tree_node* i = parent; i; i = i->parent)
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117 if (i->fcn_id == fcn_id)
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118 {
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119 entry.recursive = true;
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120 break;
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121 }
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122 }
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123
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124 // Recurse on children.
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125 for (child_map::const_iterator i = children.begin ();
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126 i != children.end (); ++i)
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127 i->second->build_flat (data);
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128 }
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129
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130 octave_value
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131 profile_data_accumulator::tree_node::get_hierarchical (double* total) const
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132 {
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133 /* Note that we don't generate the entry just for this node, but rather
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134 a struct-array with entries for all children. This way, the top-node
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135 (for which we don't want a real entry) generates already the final
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136 hierarchical profile data. */
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137
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138 const octave_idx_type n = children.size ();
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139
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140 Cell rv_indices (n, 1);
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141 Cell rv_times (n, 1);
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142 Cell rv_totals (n, 1);
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143 Cell rv_calls (n, 1);
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144 Cell rv_children (n, 1);
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145
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146 octave_idx_type i = 0;
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147 for (child_map::const_iterator p = children.begin ();
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148 p != children.end (); ++p)
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149 {
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150 const tree_node& entry = *p->second;
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151 double child_total = entry.time;
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152
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153 rv_indices(i) = octave_value (p->first);
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154 rv_times(i) = octave_value (entry.time);
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155 rv_calls(i) = octave_value (entry.calls);
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156 rv_children(i) = entry.get_hierarchical (&child_total);
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157 rv_totals(i) = octave_value (child_total);
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158
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159 if (total)
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160 *total += child_total;
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161
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162 ++i;
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163 }
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164 assert (i == n);
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165
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166 octave_map retval;
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167
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168 retval.assign ("Index", rv_indices);
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169 retval.assign ("SelfTime", rv_times);
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170 retval.assign ("TotalTime", rv_totals);
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171 retval.assign ("NumCalls", rv_calls);
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172 retval.assign ("Children", rv_children);
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173
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174 return retval;
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175 }
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176
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177 profile_data_accumulator::profile_data_accumulator ()
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178 : known_functions (), fcn_index (),
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179 enabled (false), call_tree (0), last_time (-1.0)
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180 {}
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181
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182 profile_data_accumulator::~profile_data_accumulator ()
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183 {
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184 if (call_tree)
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185 delete call_tree;
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186 }
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187
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188 void
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189 profile_data_accumulator::set_active (bool value)
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190 {
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191 if (value)
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192 {
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193 // Create a call-tree top-node if there isn't yet one.
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194 if (! call_tree)
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195 call_tree = new tree_node (0, 0);
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196
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197 // Let the top-node be the active one. This ensures we have a clean
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198 // fresh start collecting times.
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199 active_fcn = call_tree;
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200 }
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201 else
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202 {
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203 // Make sure we start with fresh timing if we're re-enabled later.
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204 last_time = -1.0;
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205 }
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206
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207 enabled = value;
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208 }
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209
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210 void
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211 profile_data_accumulator::enter_function (const std::string& fcn)
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212 {
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213 // The enter class will check and only call us if the profiler is active.
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214 assert (is_active ());
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215 assert (call_tree);
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216
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217 // If there is already an active function, add to its time before
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218 // pushing the new one.
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219 if (active_fcn != call_tree)
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220 add_current_time ();
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221
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222 // Map the function's name to its index.
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223 octave_idx_type fcn_idx;
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224 fcn_index_map::iterator pos = fcn_index.find (fcn);
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225 if (pos == fcn_index.end ())
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226 {
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227 known_functions.push_back (fcn);
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228 fcn_idx = known_functions.size ();
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229 fcn_index[fcn] = fcn_idx;
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230 }
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231 else
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232 fcn_idx = pos->second;
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233
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234 active_fcn = active_fcn->enter (fcn_idx);
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235 last_time = query_time ();
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236
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237 }
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238
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239 void
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240 profile_data_accumulator::exit_function (const std::string& fcn)
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241 {
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242 assert (call_tree);
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243 // FIXME: This assert statements doesn't make sense if profile() is called
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244 // from within a function hierarchy to begin with. See bug #39587.
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245 //assert (active_fcn != call_tree);
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246
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247 // Usually, if we are disabled this function is not even called. But the
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248 // call disabling the profiler is an exception. So also check here
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249 // and only record the time if enabled.
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250 if (is_active ())
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251 add_current_time ();
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252
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253 fcn_index_map::iterator pos = fcn_index.find (fcn);
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254 // FIXME: This assert statements doesn't make sense if profile() is called
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255 // from within a function hierarchy to begin with. See bug #39587.
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256 //assert (pos != fcn_index.end ());
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257 active_fcn = active_fcn->exit (pos->second);
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258
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259 // If this was an "inner call", we resume executing the parent function
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260 // up the stack. So note the start-time for this!
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261 last_time = query_time ();
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262 }
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263
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264 void
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265 profile_data_accumulator::reset (void)
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266 {
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267 if (is_active ())
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268 {
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269 error ("Can't reset active profiler.");
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270 return;
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271 }
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272
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273 known_functions.clear ();
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274 fcn_index.clear ();
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275
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276 if (call_tree)
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277 {
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278 delete call_tree;
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279 call_tree = 0;
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280 }
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281
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282 last_time = -1.0;
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283 }
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284
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285 octave_value
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286 profile_data_accumulator::get_flat (void) const
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287 {
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288 octave_value retval;
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289
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290 const octave_idx_type n = known_functions.size ();
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291
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292 flat_profile flat (n);
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293
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294 if (call_tree)
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295 {
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296 call_tree->build_flat (flat);
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297
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298 Cell rv_names (n, 1);
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299 Cell rv_times (n, 1);
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300 Cell rv_calls (n, 1);
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301 Cell rv_recursive (n, 1);
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302 Cell rv_parents (n, 1);
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303 Cell rv_children (n, 1);
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304
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305 for (octave_idx_type i = 0; i != n; ++i)
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306 {
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307 rv_names(i) = octave_value (known_functions[i]);
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308 rv_times(i) = octave_value (flat[i].time);
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309 rv_calls(i) = octave_value (flat[i].calls);
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310 rv_recursive(i) = octave_value (flat[i].recursive);
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311 rv_parents(i) = stats::function_set_value (flat[i].parents);
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312 rv_children(i) = stats::function_set_value (flat[i].children);
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313 }
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314
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315 octave_map m;
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316
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317 m.assign ("FunctionName", rv_names);
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318 m.assign ("TotalTime", rv_times);
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319 m.assign ("NumCalls", rv_calls);
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320 m.assign ("IsRecursive", rv_recursive);
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321 m.assign ("Parents", rv_parents);
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322 m.assign ("Children", rv_children);
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323
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324 retval = m;
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325 }
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326 else
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327 {
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328 static const char *fn[] =
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329 {
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330 "FunctionName",
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331 "TotalTime",
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332 "NumCalls",
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333 "IsRecursive",
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334 "Parents",
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335 "Children",
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336 0
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337 };
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338
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339 static octave_map m (dim_vector (0, 1), string_vector (fn));
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340
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341 retval = m;
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342 }
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343
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344 return retval;
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345 }
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346
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347 octave_value
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348 profile_data_accumulator::get_hierarchical (void) const
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349 {
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350 octave_value retval;
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351
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352 if (call_tree)
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353 retval = call_tree->get_hierarchical ();
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354 else
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355 {
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356 static const char *fn[] =
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357 {
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358 "Index",
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359 "SelfTime",
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360 "NumCalls",
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361 "Children",
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362 0
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363 };
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364
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365 static octave_map m (dim_vector (0, 1), string_vector (fn));
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366
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367 retval = m;
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368 }
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369
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370 return retval;
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371 }
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372
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373 double
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374 profile_data_accumulator::query_time (void) const
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375 {
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376 octave_time now;
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377
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378 // FIXME: is this volatile declaration really needed?
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379 // See bug #34210 for additional details.
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380 volatile double dnow = now.double_value ();
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381
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382 return dnow;
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383 }
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384
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385 void
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386 profile_data_accumulator::add_current_time (void)
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387 {
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388 const double t = query_time ();
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389 assert (last_time >= 0.0 && last_time <= t);
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390
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391 assert (call_tree && active_fcn != call_tree);
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392 active_fcn->add_time (t - last_time);
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393 }
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394
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395 profile_data_accumulator profiler;
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396
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397 // Enable or disable the profiler data collection.
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398 DEFUN (__profiler_enable__, args, ,
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399 "-*- texinfo -*-\n\
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400 @deftypefn {Function File} {} __profiler_enable__ ()\n\
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401 Undocumented internal function.\n\
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402 @end deftypefn")
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diff changeset
403 {
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diff changeset
404 octave_value_list retval;
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diff changeset
405
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diff changeset
406 const int nargin = args.length ();
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407 if (nargin > 0)
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408 {
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409 if (nargin > 1)
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diff changeset
410 {
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diff changeset
411 print_usage ();
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412 return retval;
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diff changeset
413 }
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414
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diff changeset
415 profiler.set_active (args(0).bool_value ());
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416 }
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diff changeset
417
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418 retval(0) = profiler.is_active ();
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diff changeset
419
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420 return retval;
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421 }
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422
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Jordi Gutiérrez Hermoso <jordigh@gmail.com>
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423 // Clear all collected profiling data.
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424 DEFUN (__profiler_reset__, args, ,
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425 "-*- texinfo -*-\n\
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426 @deftypefn {Function File} {} __profiler_reset__ ()\n\
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427 Undocumented internal function.\n\
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428 @end deftypefn")
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429 {
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430 octave_value_list retval;
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431 const int nargin = args.length ();
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432
ad9263d965dc First experimental profiler implementation with flat profile.
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433 if (nargin > 0)
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diff changeset
434 warning ("profiler_reset: ignoring extra arguments");
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435
ad9263d965dc First experimental profiler implementation with flat profile.
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diff changeset
436 profiler.reset ();
ad9263d965dc First experimental profiler implementation with flat profile.
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diff changeset
437
12784
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diff changeset
438 return retval;
12783
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diff changeset
439 }
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diff changeset
440
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441 // Query the timings collected by the profiler.
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diff changeset
442 DEFUN (__profiler_data__, args, nargout,
17787
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diff changeset
443 "-*- texinfo -*-\n\
19186
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444 @deftypefn {Function File} {} __profiler_data__ ()\n\
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445 Undocumented internal function.\n\
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446 @end deftypefn")
ad9263d965dc First experimental profiler implementation with flat profile.
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447 {
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448 octave_value_list retval;
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449 const int nargin = args.length ();
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450
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451 if (nargin > 0)
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452 warning ("profiler_data: ignoring extra arguments");
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453
12954
a451ae847adb Collect hierarchical data profile.
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454 if (nargout > 1)
a451ae847adb Collect hierarchical data profile.
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455 retval(1) = profiler.get_hierarchical ();
18785
b45d975aa38f Fix assert() segfaults with profiler (bug #39587, bug #39586).
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456 retval(0) = profiler.get_flat ();
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457
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458 return retval;
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459 }
18785
b45d975aa38f Fix assert() segfaults with profiler (bug #39587, bug #39586).
Rik <rik@octave.org>
parents: 18784
diff changeset
460