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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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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 2, or (at your option) any |
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10 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, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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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 "systime.h" |
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28 |
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29 #ifdef HAVE_SYS_TYPES_H |
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30 #include <sys/types.h> |
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31 #endif |
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32 |
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33 #ifdef HAVE_SYS_RESOURCE_H |
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34 #include <sys/resource.h> |
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35 #endif |
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36 |
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37 #if defined (HAVE_TIMES) && defined (HAVE_SYS_TIMES_H) |
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38 |
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39 #if defined (HAVE_SYS_PARAM_H) |
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40 #include <sys/param.h> |
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41 #endif |
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42 #include <sys/times.h> |
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43 |
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44 #if !defined (HZ) |
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45 #if defined (CLK_TCK) |
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46 #define HZ CLK_TCK |
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47 #elif defined (USG) |
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48 #define HZ 100 |
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49 #else |
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50 #define HZ 60 |
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51 #endif |
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52 #endif |
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53 |
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54 #endif |
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55 |
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56 #include "defun-dld.h" |
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57 #include "oct-map.h" |
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58 #include "sysdep.h" |
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59 #include "ov.h" |
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60 #include "oct-obj.h" |
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61 #include "utils.h" |
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62 |
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63 #ifndef RUSAGE_SELF |
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64 #define RUSAGE_SELF 0 |
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65 #endif |
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66 |
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67 // System resource functions. |
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68 |
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69 DEFUN_DLD (getrusage, , , |
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70 "-*- texinfo -*-\n\ |
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71 @deftypefn {Loadable Function} {} getrusage ()\n\ |
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72 Return a structure containing a number of statistics about the current\n\ |
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73 Octave process. Not all fields are available on all systems. If it is\n\ |
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74 not possible to get CPU time statistics, the CPU time slots are set to\n\ |
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75 zero. Other missing data are replaced by NaN. Here is a list of all\n\ |
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76 the possible fields that can be present in the structure returned by\n\ |
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77 @code{getrusage}:\n\ |
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78 \n\ |
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79 @table @code\n\ |
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80 @item idrss\n\ |
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81 Unshared data size.\n\ |
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82 \n\ |
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83 @item inblock\n\ |
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84 Number of block input operations.\n\ |
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85 \n\ |
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86 @item isrss\n\ |
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87 Unshared stack size.\n\ |
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88 \n\ |
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89 @item ixrss\n\ |
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90 Shared memory size.\n\ |
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91 \n\ |
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92 @item majflt\n\ |
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93 Number of major page faults.\n\ |
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94 \n\ |
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95 @item maxrss\n\ |
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96 Maximum data size.\n\ |
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97 \n\ |
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98 @item minflt\n\ |
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99 Number of minor page faults.\n\ |
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100 \n\ |
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101 @item msgrcv\n\ |
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102 Number of messages received.\n\ |
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103 \n\ |
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104 @item msgsnd\n\ |
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105 Number of messages sent.\n\ |
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106 \n\ |
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107 @item nivcsw\n\ |
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108 Number of involuntary context switches.\n\ |
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109 \n\ |
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110 @item nsignals\n\ |
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111 Number of signals received.\n\ |
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112 \n\ |
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113 @item nswap\n\ |
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114 Number of swaps.\n\ |
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115 \n\ |
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116 @item nvcsw\n\ |
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117 Number of voluntary context switches.\n\ |
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118 \n\ |
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119 @item oublock\n\ |
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120 Number of block output operations.\n\ |
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121 \n\ |
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122 @item stime\n\ |
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123 A structure containing the system CPU time used. The structure has the\n\ |
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124 elements @code{sec} (seconds) @code{usec} (microseconds).\n\ |
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125 \n\ |
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126 @item utime\n\ |
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127 A structure containing the user CPU time used. The structure has the\n\ |
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128 elements @code{sec} (seconds) @code{usec} (microseconds).\n\ |
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129 @end table\n\ |
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130 @end deftypefn") |
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131 { |
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132 Octave_map m; |
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133 Octave_map tv_tmp; |
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134 |
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135 #if defined (HAVE_GETRUSAGE) |
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136 |
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137 struct rusage ru; |
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138 |
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139 getrusage (RUSAGE_SELF, &ru); |
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140 |
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141 tv_tmp.assign ("sec", static_cast<double> (ru.ru_utime.tv_sec)); |
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142 tv_tmp.assign ("usec", static_cast<double> (ru.ru_utime.tv_usec)); |
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143 m.assign ("utime", octave_value (tv_tmp)); |
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144 |
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145 tv_tmp.assign ("sec", static_cast<double> (ru.ru_stime.tv_sec)); |
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146 tv_tmp.assign ("usec", static_cast<double> (ru.ru_stime.tv_usec)); |
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147 m.assign ("stime", octave_value (tv_tmp)); |
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148 |
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149 #if ! defined (RUSAGE_TIMES_ONLY) |
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150 m.assign ("maxrss", static_cast<double> (ru.ru_maxrss)); |
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151 m.assign ("ixrss", static_cast<double> (ru.ru_ixrss)); |
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152 m.assign ("idrss", static_cast<double> (ru.ru_idrss)); |
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153 m.assign ("isrss", static_cast<double> (ru.ru_isrss)); |
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154 m.assign ("minflt", static_cast<double> (ru.ru_minflt)); |
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155 m.assign ("majflt", static_cast<double> (ru.ru_majflt)); |
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156 m.assign ("nswap", static_cast<double> (ru.ru_nswap)); |
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157 m.assign ("inblock", static_cast<double> (ru.ru_inblock)); |
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158 m.assign ("oublock", static_cast<double> (ru.ru_oublock)); |
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159 m.assign ("msgsnd", static_cast<double> (ru.ru_msgsnd)); |
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160 m.assign ("msgrcv", static_cast<double> (ru.ru_msgrcv)); |
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161 m.assign ("nsignals", static_cast<double> (ru.ru_nsignals)); |
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162 m.assign ("nvcsw", static_cast<double> (ru.ru_nvcsw)); |
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163 m.assign ("nivcsw", static_cast<double> (ru.ru_nivcsw)); |
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164 #endif |
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165 |
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166 #else |
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167 #if defined (HAVE_TIMES) && defined (HAVE_SYS_TIMES_H) |
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168 |
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169 struct tms t; |
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170 |
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171 times (&t); |
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172 |
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173 unsigned long ticks; |
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174 unsigned long seconds; |
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175 unsigned long fraction; |
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176 |
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177 ticks = t.tms_utime + t.tms_cutime; |
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178 fraction = ticks % HZ; |
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179 seconds = ticks / HZ; |
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180 |
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181 tv_tmp.assign ("sec", static_cast<double> (seconds)); |
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182 tv_tmp.assign ("usec", static_cast<double> (fraction * 1e6 / HZ)); |
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183 m.assign ("utime", octave_value (tv_tmp)); |
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184 |
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185 ticks = t.tms_stime + t.tms_cstime; |
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186 fraction = ticks % HZ; |
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187 seconds = ticks / HZ; |
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188 |
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189 tv_tmp.assign ("sec", static_cast<double> (seconds)); |
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190 tv_tmp.assign ("usec", static_cast<double> (fraction * 1e6 / HZ)); |
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191 m.assign ("stime", octave_value (tv_tmp)); |
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192 |
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193 #else |
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194 |
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195 tv_tmp.assign ("sec", 0); |
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196 tv_tmp.assign ("usec", 0); |
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197 m.assign ("utime", octave_value (tv_tmp)); |
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198 |
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199 tv_tmp.assign ("sec", 0); |
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200 tv_tmp.assign ("usec", 0); |
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201 m.assign ("stime", octave_value (tv_tmp)); |
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202 |
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203 #endif |
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204 |
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205 double tmp = lo_ieee_nan_value (); |
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206 |
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207 m.assign ("maxrss", tmp); |
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208 m.assign ("ixrss", tmp); |
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209 m.assign ("idrss", tmp); |
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210 m.assign ("isrss", tmp); |
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211 m.assign ("minflt", tmp); |
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212 m.assign ("majflt", tmp); |
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213 m.assign ("nswap", tmp); |
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214 m.assign ("inblock", tmp); |
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215 m.assign ("oublock", tmp); |
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216 m.assign ("msgsnd", tmp); |
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217 m.assign ("msgrcv", tmp); |
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218 m.assign ("nsignals", tmp); |
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219 m.assign ("nvcsw", tmp); |
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220 m.assign ("nivcsw", tmp); |
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221 |
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222 #endif |
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223 |
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224 return octave_value (m); |
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225 } |
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226 |
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227 /* |
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228 ;;; Local Variables: *** |
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229 ;;; mode: C++ *** |
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230 ;;; End: *** |
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231 */ |
