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1 // timefns.cc -*- C++ -*- |
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2 /* |
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3 |
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4 Copyright (C) 1992, 1993, 1994, 1995 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, write to the Free |
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20 Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include "config.h" |
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26 #endif |
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27 |
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28 #include "dMatrix.h" |
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29 |
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30 #include "tree-const.h" |
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31 #include "oct-obj.h" |
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32 #include "systime.h" |
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33 #include "defun.h" |
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34 |
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35 #ifdef HAVE_SYS_RESOURCE_H |
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36 extern "C" |
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37 { |
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38 #include <sys/resource.h> |
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39 } |
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40 #endif |
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41 |
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42 #ifndef RUSAGE_SELF |
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43 #define RUSAGE_SELF 0 |
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44 #endif |
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45 |
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46 |
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47 DEFUN ("clock", Fclock, Sclock, 1, 0, |
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48 "clock (): return current date and time in vector with elements\n\ |
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49 \n\ |
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50 [ year, month, day-of-month, hour, minute, second ]") |
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51 { |
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52 time_t now; |
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53 double fraction = 0.0; |
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54 |
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55 #ifdef HAVE_GETTIMEOFDAY |
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56 |
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57 struct timeval tp; |
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58 |
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59 gettimeofday (&tp, 0); |
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60 |
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61 now = tp.tv_sec; |
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62 |
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63 fraction = tp.tv_usec / 1e6; |
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64 |
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65 #else |
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66 |
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67 time (&now); |
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68 |
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69 #endif |
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70 |
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71 struct tm *tm = localtime (&now); |
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72 |
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73 Matrix m (1, 6); |
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74 m.elem (0, 0) = tm->tm_year + 1900; |
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75 m.elem (0, 1) = tm->tm_mon + 1; |
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76 m.elem (0, 2) = tm->tm_mday; |
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77 m.elem (0, 3) = tm->tm_hour; |
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78 m.elem (0, 4) = tm->tm_min; |
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79 m.elem (0, 5) = tm->tm_sec + fraction; |
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80 |
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81 return m; |
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82 } |
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83 |
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84 DEFUN ("cputime", Fcputime, Scputime, 0, 0, |
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85 "[total, user, system] = cputime ()\n\ |
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86 \n\ |
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87 Return CPU time statistics.") |
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88 { |
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89 Octave_object retval (3, Matrix (1, 1, 0.0)); |
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90 |
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91 #if defined (HAVE_GETRUSAGE) |
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92 |
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93 struct rusage resource_stats; |
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94 |
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95 getrusage (RUSAGE_SELF, &resource_stats); |
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96 |
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97 struct timeval usr = resource_stats.ru_utime; |
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98 struct timeval sys = resource_stats.ru_stime; |
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99 |
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100 double usr_time = usr.tv_sec + usr.tv_usec / 1e6; |
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101 double sys_time = sys.tv_sec + sys.tv_usec / 1e6; |
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102 |
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103 retval (2) = sys_time; |
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104 retval (1) = usr_time; |
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105 retval (0) = usr_time + sys_time; |
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106 |
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107 #endif |
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108 |
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109 return retval; |
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110 } |
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111 |
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112 DEFUN ("date", Fdate, Sdate, 1, 0, |
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113 "date (): return current date in a string, in the form `18-Jul-94'") |
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114 { |
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115 Octave_object retval; |
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116 |
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117 time_t now; |
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118 struct tm *tm; |
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119 |
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120 time (&now); |
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121 tm = localtime (&now); |
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122 char date[32]; |
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123 int len = strftime (date, 31, "%d-%b-%y", tm); |
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124 if (len > 0) |
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125 retval = date; |
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126 |
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127 return retval; |
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128 } |
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129 |
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130 /* |
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131 ;;; Local Variables: *** |
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132 ;;; mode: C++ *** |
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133 ;;; page-delimiter: "^/\\*" *** |
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134 ;;; End: *** |
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135 */ |
