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annotate libinterp/corefcn/profiler.cc @ 18784:0eea9ccbae22

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Fix blank line appearing in profiler output (bug #39524). * profiler.cc (profile_data_accumulator::enter::enter): Don't enter functions which don't have a name, such as the readline event hook function.
author Rik <rik@octave.org>
date Tue, 13 May 2014 21:56:39 -0700
parents 8c33abdd2f9a
children b45d975aa38f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2
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d63878346099 maint: Update copyright notices for release.
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3 Copyright (C) 2012-2013 Daniel Kraft
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 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 Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #include <iostream>
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28
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29 #include "defun.h"
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30 #include "oct-time.h"
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31 #include "ov-struct.h"
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32 #include "pager.h"
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33 #include "profiler.h"
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34
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35 profile_data_accumulator::enter::enter (profile_data_accumulator& a,
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36 const std::string& f)
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37 : acc (a)
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38 {
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39 // FIXME: Add test for f != "" to prevent a blank line showing up
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40 // in profiler statistics. See bug #39524. The root cause
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41 // is that the function name is not set for the recurring readline
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42 // hook function.
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43 if (acc.is_active () && f != "")
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44 {
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45 fcn = f;
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46 acc.enter_function (fcn);
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47 }
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48 else
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49 fcn = "";
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50 }
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51
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52 profile_data_accumulator::enter::~enter ()
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53 {
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54 if (fcn != "")
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55 acc.exit_function (fcn);
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56 }
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57
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58 profile_data_accumulator::stats::stats ()
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59 : time (0.0), calls (0), recursive (false),
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60 parents (), children ()
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61 {}
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62
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63 octave_value
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64 profile_data_accumulator::stats::function_set_value (const function_set& list)
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65 {
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66 const octave_idx_type n = list.size ();
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67
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68 RowVector retval (n);
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69 octave_idx_type i = 0;
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70 for (function_set::const_iterator p = list.begin (); p != list.end (); ++p)
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71 {
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72 retval(i) = *p;
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73 ++i;
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74 }
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75 assert (i == n);
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76
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77 return retval;
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78 }
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79
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80 profile_data_accumulator::tree_node::tree_node (tree_node* p, octave_idx_type f)
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81 : parent (p), fcn_id (f), children (), time (0.0), calls (0)
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82 {}
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83
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84 profile_data_accumulator::tree_node::~tree_node ()
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85 {
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86 for (child_map::iterator i = children.begin (); i != children.end (); ++i)
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87 delete i->second;
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88 }
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89
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90 profile_data_accumulator::tree_node*
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91 profile_data_accumulator::tree_node::enter (octave_idx_type fcn)
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92 {
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93 tree_node* retval;
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94
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95 child_map::iterator pos = children.find (fcn);
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96 if (pos == children.end ())
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97 {
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98 retval = new tree_node (this, fcn);
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99 children[fcn] = retval;
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100 }
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101 else
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102 retval = pos->second;
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103
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104 ++retval->calls;
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105 return retval;
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106 }
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107
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108 profile_data_accumulator::tree_node*
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109 profile_data_accumulator::tree_node::exit (octave_idx_type fcn)
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110 {
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111 assert (parent);
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112 assert (fcn_id == fcn);
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113
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114 return parent;
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115 }
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116
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117 void
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118 profile_data_accumulator::tree_node::build_flat (flat_profile& data) const
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119 {
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120 // If this is not the top-level node, update profile entry for this function.
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121 if (fcn_id != 0)
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122 {
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123 stats& entry = data[fcn_id - 1];
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124
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125 entry.time += time;
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126 entry.calls += calls;
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127
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128 assert (parent);
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129 if (parent->fcn_id != 0)
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130 {
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131 entry.parents.insert (parent->fcn_id);
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132 data[parent->fcn_id - 1].children.insert (fcn_id);
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133 }
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134
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135 if (!entry.recursive)
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136 for (const tree_node* i = parent; i; i = i->parent)
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137 if (i->fcn_id == fcn_id)
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138 {
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139 entry.recursive = true;
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140 break;
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141 }
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142 }
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143
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144 // Recurse on children.
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145 for (child_map::const_iterator i = children.begin ();
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146 i != children.end (); ++i)
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147 i->second->build_flat (data);
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148 }
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149
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150 octave_value
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151 profile_data_accumulator::tree_node::get_hierarchical (double* total) const
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152 {
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153 /* Note that we don't generate the entry just for this node, but rather
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154 a struct-array with entries for all children. This way, the top-node
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155 (for which we don't want a real entry) generates already the final
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156 hierarchical profile data. */
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157
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158 const octave_idx_type n = children.size ();
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159
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160 Cell rv_indices (n, 1);
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161 Cell rv_times (n, 1);
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162 Cell rv_totals (n, 1);
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163 Cell rv_calls (n, 1);
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164 Cell rv_children (n, 1);
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165
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166 octave_idx_type i = 0;
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167 for (child_map::const_iterator p = children.begin ();
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168 p != children.end (); ++p)
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169 {
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170 const tree_node& entry = *p->second;
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171 double child_total = entry.time;
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172
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173 rv_indices(i) = octave_value (p->first);
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174 rv_times(i) = octave_value (entry.time);
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175 rv_calls(i) = octave_value (entry.calls);
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176 rv_children(i) = entry.get_hierarchical (&child_total);
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177 rv_totals(i) = octave_value (child_total);
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178
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179 if (total)
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180 *total += child_total;
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181
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182 ++i;
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183 }
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184 assert (i == n);
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185
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186 octave_map retval;
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187
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188 retval.assign ("Index", rv_indices);
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189 retval.assign ("SelfTime", rv_times);
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190 retval.assign ("TotalTime", rv_totals);
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191 retval.assign ("NumCalls", rv_calls);
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192 retval.assign ("Children", rv_children);
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193
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194 return retval;
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195 }
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196
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197 profile_data_accumulator::profile_data_accumulator ()
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198 : known_functions (), fcn_index (),
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199 enabled (false), call_tree (0), last_time (-1.0)
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200 {}
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201
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202 profile_data_accumulator::~profile_data_accumulator ()
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203 {
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204 if (call_tree)
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205 delete call_tree;
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206 }
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207
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208 void
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209 profile_data_accumulator::set_active (bool value)
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210 {
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211 if (value)
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212 {
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213 // Create a call-tree top-node if there isn't yet one.
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214 if (!call_tree)
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215 call_tree = new tree_node (0, 0);
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216
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217 // Let the top-node be the active one. This ensures we have a clean
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218 // fresh start collecting times.
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219 active_fcn = call_tree;
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220 }
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221 else
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222 {
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223 // Make sure we start with fresh timing if we're re-enabled later.
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224 last_time = -1.0;
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225 }
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226
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227 enabled = value;
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228 }
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229
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230 void
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231 profile_data_accumulator::enter_function (const std::string& fcn)
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232 {
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233 // The enter class will check and only call us if the profiler is active.
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234 assert (is_active ());
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235 assert (call_tree);
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236
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237 // If there is already an active function, add to its time before
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238 // pushing the new one.
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239 if (active_fcn != call_tree)
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240 add_current_time ();
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241
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242 // Map the function's name to its index.
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243 octave_idx_type fcn_idx;
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244 fcn_index_map::iterator pos = fcn_index.find (fcn);
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245 if (pos == fcn_index.end ())
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246 {
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247 known_functions.push_back (fcn);
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248 fcn_idx = known_functions.size ();
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249 fcn_index[fcn] = fcn_idx;
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250 }
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251 else
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252 fcn_idx = pos->second;
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253
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254 active_fcn = active_fcn->enter (fcn_idx);
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255 last_time = query_time ();
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256 }
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257
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258 void
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259 profile_data_accumulator::exit_function (const std::string& fcn)
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260 {
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261 assert (call_tree);
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262 assert (active_fcn != call_tree);
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263
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264 // Usually, if we are disabled this function is not even called. But the
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265 // call disabling the profiler is an exception. So also check here
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266 // and only record the time if enabled.
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267 if (is_active ())
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268 add_current_time ();
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269
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270 fcn_index_map::iterator pos = fcn_index.find (fcn);
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271 assert (pos != fcn_index.end ());
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272 active_fcn = active_fcn->exit (pos->second);
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273
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274 // If this was an "inner call", we resume executing the parent function
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275 // up the stack. So note the start-time for this!
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276 last_time = query_time ();
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277 }
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278
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279 void
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280 profile_data_accumulator::reset (void)
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281 {
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282 if (is_active ())
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283 {
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284 error ("Can't reset active profiler.");
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285 return;
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286 }
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287
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288 known_functions.clear ();
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289 fcn_index.clear ();
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290
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291 if (call_tree)
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292 {
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293 delete call_tree;
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294 call_tree = 0;
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295 }
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296
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297 last_time = -1.0;
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298 }
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299
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300 octave_value
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301 profile_data_accumulator::get_flat (void) const
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302 {
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303 octave_value retval;
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304
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305 const octave_idx_type n = known_functions.size ();
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306
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307 flat_profile flat (n);
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308
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309 if (call_tree)
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310 {
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311 call_tree->build_flat (flat);
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312
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313 Cell rv_names (n, 1);
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314 Cell rv_times (n, 1);
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315 Cell rv_calls (n, 1);
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316 Cell rv_recursive (n, 1);
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317 Cell rv_parents (n, 1);
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318 Cell rv_children (n, 1);
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319
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320 for (octave_idx_type i = 0; i != n; ++i)
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321 {
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322 rv_names(i) = octave_value (known_functions[i]);
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323 rv_times(i) = octave_value (flat[i].time);
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324 rv_calls(i) = octave_value (flat[i].calls);
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325 rv_recursive(i) = octave_value (flat[i].recursive);
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326 rv_parents(i) = stats::function_set_value (flat[i].parents);
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327 rv_children(i) = stats::function_set_value (flat[i].children);
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328 }
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329
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330 octave_map m;
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331
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332 m.assign ("FunctionName", rv_names);
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333 m.assign ("TotalTime", rv_times);
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334 m.assign ("NumCalls", rv_calls);
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335 m.assign ("IsRecursive", rv_recursive);
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336 m.assign ("Parents", rv_parents);
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337 m.assign ("Children", rv_children);
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338
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339 retval = m;
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340 }
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341 else
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342 {
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343 static const char *fn[] =
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344 {
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345 "FunctionName",
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346 "TotalTime",
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347 "NumCalls",
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348 "IsRecursive",
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349 "Parents",
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350 "Children",
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351 0
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352 };
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353
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354 static octave_map m (dim_vector (0, 1), string_vector (fn));
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355
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356 retval = m;
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357 }
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358
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359 return retval;
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360 }
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361
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362 octave_value
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363 profile_data_accumulator::get_hierarchical (void) const
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364 {
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365 octave_value retval;
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366
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367 if (call_tree)
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368 retval = call_tree->get_hierarchical ();
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369 else
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370 {
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371 static const char *fn[] =
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372 {
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373 "Index",
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374 "SelfTime",
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375 "NumCalls",
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376 "Children",
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377 0
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378 };
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379
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380 static octave_map m (dim_vector (0, 1), string_vector (fn));
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381
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382 retval = m;
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383 }
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384
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385 return retval;
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386 }
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387
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388 double
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389 profile_data_accumulator::query_time (void) const
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390 {
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391 octave_time now;
14345
06f706e92771 avoid profiler test failure on more systems
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diff changeset
392
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diff changeset
393 // FIXME: is this volatile declaration really needed?
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diff changeset
394 // See bug #34210 for additional details.
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diff changeset
395 volatile double dnow = now.double_value ();
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diff changeset
396
13269
b1882a8217ab avoid apparent compiler optimization problem on Cygwin and MinGW systems (bug #34210)
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diff changeset
397 return dnow;
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398 }
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diff changeset
399
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diff changeset
400 void
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diff changeset
401 profile_data_accumulator::add_current_time (void)
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diff changeset
402 {
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diff changeset
403 const double t = query_time ();
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diff changeset
404 assert (last_time >= 0.0 && last_time <= t);
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diff changeset
405
12954
a451ae847adb Collect hierarchical data profile.
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diff changeset
406 assert (call_tree && active_fcn != call_tree);
a451ae847adb Collect hierarchical data profile.
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diff changeset
407 active_fcn->add_time (t - last_time);
12783
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diff changeset
408 }
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parents:
diff changeset
409
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diff changeset
410 profile_data_accumulator profiler;
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diff changeset
411
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Jordi Gutiérrez Hermoso <jordigh@gmail.com>
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412 // Enable or disable the profiler data collection.
12955
05941540287c Style fixes on profiler internal functions
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diff changeset
413 DEFUN (__profiler_enable__, args, ,
17787
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Rik <rik@octave.org>
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diff changeset
414 "-*- texinfo -*-\n\
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diff changeset
415 @deftypefn {Function File} __profiler_enable ()\n\
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416 Undocumented internal function.\n\
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diff changeset
417 @end deftypefn")
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diff changeset
418 {
12784
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diff changeset
419 octave_value_list retval;
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diff changeset
420
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diff changeset
421 const int nargin = args.length ();
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422 if (nargin > 0)
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diff changeset
423 {
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diff changeset
424 if (nargin > 1)
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diff changeset
425 {
c499d54796d6 Minor stylistic fixes to profiler code
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diff changeset
426 print_usage ();
c499d54796d6 Minor stylistic fixes to profiler code
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diff changeset
427 return retval;
c499d54796d6 Minor stylistic fixes to profiler code
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diff changeset
428 }
12783
ad9263d965dc First experimental profiler implementation with flat profile.
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diff changeset
429
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diff changeset
430 profiler.set_active (args(0).bool_value ());
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431 }
ad9263d965dc First experimental profiler implementation with flat profile.
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diff changeset
432
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diff changeset
433 retval(0) = profiler.is_active ();
c499d54796d6 Minor stylistic fixes to profiler code
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diff changeset
434
c499d54796d6 Minor stylistic fixes to profiler code
Jordi Gutiérrez Hermoso <jordigh@gmail.com>
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diff changeset
435 return retval;
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diff changeset
436 }
ad9263d965dc First experimental profiler implementation with flat profile.
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diff changeset
437
12870
39d813616c8f Restore the docstrings for internal profiler functions as C++ comments
Jordi Gutiérrez Hermoso <jordigh@gmail.com>
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diff changeset
438 // Clear all collected profiling data.
12955
05941540287c Style fixes on profiler internal functions
Jordi Gutiérrez Hermoso <jordigh@gmail.com>
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diff changeset
439 DEFUN (__profiler_reset__, args, ,
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
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diff changeset
440 "-*- texinfo -*-\n\
12869
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diff changeset
441 @deftypefn {Function File} __profiler_reset ()\n\
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diff changeset
442 Undocumented internal function.\n\
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diff changeset
443 @end deftypefn")
ad9263d965dc First experimental profiler implementation with flat profile.
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parents:
diff changeset
444 {
12784
c499d54796d6 Minor stylistic fixes to profiler code
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diff changeset
445 octave_value_list retval;
12783
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446 const int nargin = args.length ();
ad9263d965dc First experimental profiler implementation with flat profile.
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diff changeset
447
ad9263d965dc First experimental profiler implementation with flat profile.
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diff changeset
448 if (nargin > 0)
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diff changeset
449 warning ("profiler_reset: ignoring extra arguments");
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450
ad9263d965dc First experimental profiler implementation with flat profile.
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diff changeset
451 profiler.reset ();
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diff changeset
452
12784
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diff changeset
453 return retval;
12783
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diff changeset
454 }
ad9263d965dc First experimental profiler implementation with flat profile.
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diff changeset
455
12870
39d813616c8f Restore the docstrings for internal profiler functions as C++ comments
Jordi Gutiérrez Hermoso <jordigh@gmail.com>
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456 // Query the timings collected by the profiler.
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05941540287c Style fixes on profiler internal functions
Jordi Gutiérrez Hermoso <jordigh@gmail.com>
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diff changeset
457 DEFUN (__profiler_data__, args, nargout,
17787
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Rik <rik@octave.org>
parents: 17744
diff changeset
458 "-*- texinfo -*-\n\
12869
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parents: 12784
diff changeset
459 @deftypefn {Function File} __profiler_data ()\n\
de9a9719e594 Extend data collection in profiler and add user-interface profile function.
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diff changeset
460 Undocumented internal function.\n\
12783
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diff changeset
461 @end deftypefn")
ad9263d965dc First experimental profiler implementation with flat profile.
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diff changeset
462 {
12784
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diff changeset
463 octave_value_list retval;
12783
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diff changeset
464 const int nargin = args.length ();
ad9263d965dc First experimental profiler implementation with flat profile.
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465
ad9263d965dc First experimental profiler implementation with flat profile.
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diff changeset
466 if (nargin > 0)
12784
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diff changeset
467 warning ("profiler_data: ignoring extra arguments");
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Daniel Kraft <d@domob.eu>
parents:
diff changeset
468
12954
a451ae847adb Collect hierarchical data profile.
Daniel Kraft <d@domob.eu>
parents: 12920
diff changeset
469 retval(0) = profiler.get_flat ();
a451ae847adb Collect hierarchical data profile.
Daniel Kraft <d@domob.eu>
parents: 12920
diff changeset
470 if (nargout > 1)
a451ae847adb Collect hierarchical data profile.
Daniel Kraft <d@domob.eu>
parents: 12920
diff changeset
471 retval(1) = profiler.get_hierarchical ();
12783
ad9263d965dc First experimental profiler implementation with flat profile.
Daniel Kraft <d@domob.eu>
parents:
diff changeset
472
12784
c499d54796d6 Minor stylistic fixes to profiler code
Jordi Gutiérrez Hermoso <jordigh@gmail.com>
parents: 12783
diff changeset
473 return retval;
12783
ad9263d965dc First experimental profiler implementation with flat profile.
Daniel Kraft <d@domob.eu>
parents:
diff changeset
474 }