Mercurial > octave-libgccjit
annotate src/profiler.cc @ 13052:43dcb0093ebd
allow profile ('info') to work if no profiling data is available
* profiler.cc (profile_data_accumulator::get_flat): Return empty
struct if call_tree isn't available. Use octave_map, not obsolete
Octave_map.
(profile_data_accumulator::get_hierarchical): Likewise.
author | John W. Eaton <jwe@octave.org> |
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date | Sat, 03 Sep 2011 12:59:45 -0400 |
parents | 05941540287c |
children | e81ddf9cacd5 |
rev | line source |
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1 /* |
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2 |
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3 Copyright (C) 2011 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 <cstddef> |
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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::enter::enter (profile_data_accumulator& a, |
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37 const std::string& f) |
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38 : acc (a) |
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39 { |
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40 if (acc.is_active ()) |
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41 { |
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42 fcn = f; |
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43 acc.enter_function (fcn); |
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44 } |
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45 else |
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46 fcn = ""; |
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47 } |
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48 |
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49 profile_data_accumulator::enter::~enter () |
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50 { |
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51 if (fcn != "") |
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52 acc.exit_function (fcn); |
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53 } |
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54 |
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55 profile_data_accumulator::stats::stats () |
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56 : time (0.0), calls (0), recursive (false), |
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57 parents (), children () |
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58 {} |
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59 |
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60 octave_value |
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61 profile_data_accumulator::stats::function_set_value (const function_set& list) |
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62 { |
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63 const octave_idx_type n = list.size (); |
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64 |
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65 RowVector retval (n); |
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66 octave_idx_type i = 0; |
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67 for (function_set::const_iterator p = list.begin (); p != list.end (); ++p) |
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68 { |
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69 retval(i) = *p; |
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70 ++i; |
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71 } |
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72 assert (i == n); |
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73 |
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74 return retval; |
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75 } |
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76 |
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77 profile_data_accumulator::tree_node::tree_node (tree_node* p, octave_idx_type f) |
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78 : parent (p), fcn_id (f), children (), time (0.0), calls (0) |
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79 {} |
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80 |
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81 profile_data_accumulator::tree_node::~tree_node () |
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82 { |
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83 for (child_map::iterator i = children.begin (); i != children.end (); ++i) |
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84 delete i->second; |
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85 } |
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86 |
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87 profile_data_accumulator::tree_node* |
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88 profile_data_accumulator::tree_node::enter (octave_idx_type fcn) |
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89 { |
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90 tree_node* retval; |
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91 |
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92 child_map::iterator pos = children.find (fcn); |
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93 if (pos == children.end ()) |
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94 { |
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95 retval = new tree_node (this, fcn); |
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96 children[fcn] = retval; |
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97 } |
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98 else |
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99 retval = pos->second; |
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100 |
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101 ++retval->calls; |
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102 return retval; |
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103 } |
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104 |
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105 profile_data_accumulator::tree_node* |
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106 profile_data_accumulator::tree_node::exit (octave_idx_type fcn) |
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107 { |
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108 assert (parent); |
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109 assert (fcn_id == fcn); |
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110 |
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111 return parent; |
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112 } |
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113 |
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114 void |
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115 profile_data_accumulator::tree_node::build_flat (flat_profile& data) const |
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116 { |
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117 // If this is not the top-level node, update profile entry for this function. |
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118 if (fcn_id != 0) |
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119 { |
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120 stats& entry = data[fcn_id - 1]; |
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121 |
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122 entry.time += time; |
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123 entry.calls += calls; |
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124 |
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125 assert (parent); |
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126 if (parent->fcn_id != 0) |
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127 { |
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128 entry.parents.insert (parent->fcn_id); |
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129 data[parent->fcn_id - 1].children.insert (fcn_id); |
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130 } |
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131 |
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132 if (!entry.recursive) |
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133 for (const tree_node* i = parent; i; i = i->parent) |
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134 if (i->fcn_id == fcn_id) |
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135 { |
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136 entry.recursive = true; |
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137 break; |
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138 } |
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139 } |
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140 |
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141 // Recurse on children. |
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142 for (child_map::const_iterator i = children.begin (); |
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143 i != children.end (); ++i) |
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144 i->second->build_flat (data); |
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145 } |
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146 |
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147 octave_value |
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148 profile_data_accumulator::tree_node::get_hierarchical (void) const |
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149 { |
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150 /* Note that we don't generate the entry just for this node, but rather |
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151 a struct-array with entries for all children. This way, the top-node |
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152 (for which we don't want a real entry) generates already the final |
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153 hierarchical profile data. */ |
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154 |
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155 const octave_idx_type n = children.size (); |
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156 |
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157 Cell rv_indices (n, 1); |
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158 Cell rv_times (n, 1); |
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159 Cell rv_calls (n, 1); |
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160 Cell rv_children (n, 1); |
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161 |
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162 octave_idx_type i = 0; |
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163 for (child_map::const_iterator p = children.begin (); |
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164 p != children.end (); ++p) |
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165 { |
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166 const tree_node& entry = *p->second; |
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167 |
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168 rv_indices(i) = octave_value (p->first); |
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169 rv_times(i) = octave_value (entry.time); |
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170 rv_calls(i) = octave_value (entry.calls); |
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171 rv_children(i) = entry.get_hierarchical (); |
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172 |
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173 ++i; |
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174 } |
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175 assert (i == n); |
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176 |
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177 octave_map retval; |
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178 |
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179 retval.assign ("Index", rv_indices); |
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180 retval.assign ("SelfTime", rv_times); |
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181 retval.assign ("NumCalls", rv_calls); |
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182 retval.assign ("Children", rv_children); |
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183 |
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184 return retval; |
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185 } |
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186 |
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187 profile_data_accumulator::profile_data_accumulator () |
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188 : known_functions (), fcn_index (), |
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189 enabled (false), call_tree (NULL), last_time (-1.0) |
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190 {} |
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191 |
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192 profile_data_accumulator::~profile_data_accumulator () |
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193 { |
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194 if (call_tree) |
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195 delete call_tree; |
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196 } |
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197 |
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198 void |
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199 profile_data_accumulator::set_active (bool value) |
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200 { |
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201 if (value) |
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202 { |
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203 // Create a call-tree top-node if there isn't yet one. |
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204 if (!call_tree) |
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205 call_tree = new tree_node (NULL, 0); |
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206 |
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207 // Let the top-node be the active one. This ensures we have a clean |
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208 // fresh start collecting times. |
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209 active_fcn = call_tree; |
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210 } |
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211 else |
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212 { |
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213 // Make sure we start with fresh timing if we're re-enabled later. |
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214 last_time = -1.0; |
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215 } |
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216 |
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217 enabled = value; |
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218 } |
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219 |
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220 void |
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221 profile_data_accumulator::enter_function (const std::string& fcn) |
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222 { |
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223 // The enter class will check and only call us if the profiler is active. |
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224 assert (is_active ()); |
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225 assert (call_tree); |
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226 |
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227 // If there is already an active function, add to its time before |
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228 // pushing the new one. |
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229 if (active_fcn != call_tree) |
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230 add_current_time (); |
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231 |
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232 // Map the function's name to its index. |
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233 octave_idx_type fcn_idx; |
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234 fcn_index_map::iterator pos = fcn_index.find (fcn); |
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235 if (pos == fcn_index.end ()) |
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236 { |
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237 known_functions.push_back (fcn); |
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238 fcn_idx = known_functions.size (); |
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239 fcn_index[fcn] = fcn_idx; |
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240 } |
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241 else |
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242 fcn_idx = pos->second; |
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243 |
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244 active_fcn = active_fcn->enter (fcn_idx); |
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245 last_time = query_time (); |
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246 } |
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247 |
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248 void |
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249 profile_data_accumulator::exit_function (const std::string& fcn) |
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250 { |
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251 assert (call_tree); |
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252 assert (active_fcn != call_tree); |
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253 |
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254 // Usually, if we are disabled this function is not even called. But the |
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255 // call disabling the profiler is an exception. So also check here |
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256 // and only record the time if enabled. |
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257 if (is_active ()) |
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258 add_current_time (); |
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259 |
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260 fcn_index_map::iterator pos = fcn_index.find (fcn); |
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261 assert (pos != fcn_index.end ()); |
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262 active_fcn = active_fcn->exit (pos->second); |
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263 |
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264 // If this was an "inner call", we resume executing the parent function |
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265 // up the stack. So note the start-time for this! |
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266 last_time = query_time (); |
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267 } |
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268 |
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269 void |
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270 profile_data_accumulator::reset (void) |
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271 { |
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272 if (is_active ()) |
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273 { |
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274 error ("Can't reset active profiler."); |
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275 return; |
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276 } |
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277 |
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278 known_functions.clear (); |
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279 fcn_index.clear (); |
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280 |
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281 if (call_tree) |
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282 { |
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283 delete call_tree; |
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284 call_tree = NULL; |
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285 } |
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286 |
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287 last_time = -1.0; |
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288 } |
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289 |
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290 octave_value |
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291 profile_data_accumulator::get_flat (void) const |
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292 { |
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293 octave_value retval; |
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294 |
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295 const octave_idx_type n = known_functions.size (); |
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296 |
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297 flat_profile flat (n); |
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298 |
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299 if (call_tree) |
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300 { |
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301 call_tree->build_flat (flat); |
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302 |
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303 Cell rv_names (n, 1); |
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304 Cell rv_times (n, 1); |
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305 Cell rv_calls (n, 1); |
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306 Cell rv_recursive (n, 1); |
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307 Cell rv_parents (n, 1); |
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308 Cell rv_children (n, 1); |
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309 |
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310 for (octave_idx_type i = 0; i != n; ++i) |
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311 { |
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312 rv_names(i) = octave_value (known_functions[i]); |
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313 rv_times(i) = octave_value (flat[i].time); |
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314 rv_calls(i) = octave_value (flat[i].calls); |
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315 rv_recursive(i) = octave_value (flat[i].recursive); |
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316 rv_parents(i) = stats::function_set_value (flat[i].parents); |
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317 rv_children(i) = stats::function_set_value (flat[i].children); |
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318 } |
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319 |
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320 octave_map m; |
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321 |
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322 m.assign ("FunctionName", rv_names); |
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323 m.assign ("TotalTime", rv_times); |
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324 m.assign ("NumCalls", rv_calls); |
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325 m.assign ("IsRecursive", rv_recursive); |
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326 m.assign ("Parents", rv_parents); |
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327 m.assign ("Children", rv_children); |
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328 |
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329 retval = m; |
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330 } |
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331 else |
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332 { |
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333 static const char *fn[] = |
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334 { |
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335 "FunctionName", |
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336 "TotalTime", |
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337 "NumCalls", |
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338 "IsRecursive", |
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339 "Parents", |
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340 "Children", |
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341 0 |
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342 }; |
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343 |
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344 static octave_map m (dim_vector (0, 1), string_vector (fn)); |
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345 |
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346 retval = m; |
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347 } |
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348 |
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349 return retval; |
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350 } |
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351 |
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352 octave_value |
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353 profile_data_accumulator::get_hierarchical (void) const |
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354 { |
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355 octave_value retval; |
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356 |
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357 if (call_tree) |
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358 retval = call_tree->get_hierarchical (); |
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359 else |
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360 { |
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361 static const char *fn[] = |
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362 { |
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363 "Index", |
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364 "SelfTime", |
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365 "NumCalls", |
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366 "Children", |
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367 0 |
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368 }; |
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369 |
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370 static octave_map m (dim_vector (0, 1), string_vector (fn)); |
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371 |
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372 retval = m; |
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373 } |
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374 |
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375 return retval; |
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376 } |
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377 |
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378 double |
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379 profile_data_accumulator::query_time (void) const |
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380 { |
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381 octave_time now; |
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382 return now.double_value (); |
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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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403 { |
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404 octave_value_list retval; |
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405 |
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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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410 { |
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411 print_usage (); |
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412 return retval; |
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413 } |
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414 |
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415 profiler.set_active (args(0).bool_value ()); |
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416 } |
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417 |
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418 retval(0) = profiler.is_active (); |
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419 |
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420 return retval; |
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421 } |
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422 |
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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 |
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433 if (nargin > 0) |
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434 warning ("profiler_reset: ignoring extra arguments"); |
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435 |
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436 profiler.reset (); |
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437 |
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438 return retval; |
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439 } |
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440 |
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441 // Query the timings collected by the profiler. |
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442 DEFUN (__profiler_data__, args, nargout, |
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443 "-*- texinfo -*-\n\ |
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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") |
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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 |
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454 retval(0) = profiler.get_flat (); |
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455 if (nargout > 1) |
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456 retval(1) = profiler.get_hierarchical (); |
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457 |
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458 return retval; |
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459 } |