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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 "oct-map.h" |
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34 #include "defun.h" |
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35 #include "utils.h" |
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36 #include "help.h" |
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37 |
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38 #ifdef HAVE_SYS_RESOURCE_H |
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39 extern "C" |
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40 { |
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41 #include <sys/resource.h> |
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42 } |
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43 #endif |
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44 |
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45 #ifndef RUSAGE_SELF |
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46 #define RUSAGE_SELF 0 |
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47 #endif |
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48 |
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49 // CPU time functions. |
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50 |
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51 DEFUN ("cputime", Fcputime, Scputime, 0, 0, |
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52 "[total, user, system] = cputime ()\n\ |
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53 \n\ |
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54 Return CPU time statistics.") |
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55 { |
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56 Octave_object retval (3, Matrix (1, 1, 0.0)); |
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57 |
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58 #if defined (HAVE_GETRUSAGE) |
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59 |
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60 struct rusage resource_stats; |
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61 |
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62 getrusage (RUSAGE_SELF, &resource_stats); |
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63 |
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64 struct timeval usr = resource_stats.ru_utime; |
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65 struct timeval sys = resource_stats.ru_stime; |
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66 |
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67 double usr_time = usr.tv_sec + usr.tv_usec / 1e6; |
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68 double sys_time = sys.tv_sec + sys.tv_usec / 1e6; |
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69 |
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70 retval (2) = sys_time; |
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71 retval (1) = usr_time; |
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72 retval (0) = usr_time + sys_time; |
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73 |
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74 #endif |
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75 |
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76 return retval; |
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77 } |
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78 |
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79 // Date and time functions. |
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80 |
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81 static Octave_map |
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82 mk_tm_map (struct tm *tm, double fraction) |
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83 { |
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84 Octave_map m; |
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85 |
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86 m ["tm_usec"] = fraction * 1e6; |
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87 m ["tm_sec"] = (double) tm->tm_sec; |
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88 m ["tm_min"] = (double) tm->tm_min; |
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89 m ["tm_hour"] = (double) tm->tm_hour; |
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90 m ["tm_mday"] = (double) tm->tm_mday; |
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91 m ["tm_mon"] = (double) tm->tm_mon; |
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92 m ["tm_year"] = (double) tm->tm_year; |
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93 m ["tm_wday"] = (double) tm->tm_wday; |
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94 m ["tm_yday"] = (double) tm->tm_yday; |
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95 m ["tm_isdst"] = (double) tm->tm_isdst; |
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96 #if defined (HAVE_TM_ZONE) |
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97 m ["tm_zone"] = tm->tm_zone; |
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98 #elif defined (HAVE_TZNAME) |
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99 if (tm->tm_isdst && tzname[1] && *tzname[1]) |
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100 m ["tm_zone"] = tzname[1]; |
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101 else |
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102 m ["tm_zone"] = tzname[0]; |
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103 #else |
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104 m ["tm_zone"] = zone_name (tm); |
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105 #endif |
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106 |
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107 return m; |
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108 } |
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109 |
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110 static struct tm* |
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111 extract_tm (Octave_map &m, double &fraction) |
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112 { |
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113 static struct tm tm; |
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114 |
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115 fraction = NINT (m ["tm_usec"] . double_value ()); |
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116 tm.tm_sec = NINT (m ["tm_sec"] . double_value ()); |
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117 tm.tm_min = NINT (m ["tm_min"] . double_value ()); |
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118 tm.tm_hour = NINT (m ["tm_hour"] . double_value ()); |
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119 tm.tm_mday = NINT (m ["tm_mday"] . double_value ()); |
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120 tm.tm_mon = NINT (m ["tm_mon"] . double_value ()); |
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121 tm.tm_year = NINT (m ["tm_year"] . double_value ()); |
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122 tm.tm_wday = NINT (m ["tm_wday"] . double_value ()); |
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123 tm.tm_yday = NINT (m ["tm_yday"] . double_value ()); |
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124 tm.tm_isdst = NINT (m ["tm_isdst"] . double_value ()); |
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125 tm.tm_zone = (m ["tm_zone"] . string_value ()); |
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126 |
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127 return &tm; |
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128 } |
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129 |
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130 DEFUN ("time", Ftime, Stime, 1, 0, |
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131 "time ()\n\ |
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132 \n\ |
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133 Return current time. On Unix systems, this is the number of\n\ |
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134 seconds since the epoch.") |
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135 { |
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136 time_t now; |
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137 double fraction = 0.0; |
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138 |
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139 #ifdef HAVE_GETTIMEOFDAY |
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140 |
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141 struct timeval tp; |
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142 |
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143 gettimeofday (&tp, 0); |
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144 |
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145 now = tp.tv_sec; |
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146 |
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147 fraction = tp.tv_usec / 1e6; |
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148 |
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149 #else |
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150 |
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151 now = time (0); |
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152 |
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153 #endif |
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154 |
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155 return (double) now + fraction; |
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156 } |
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157 |
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158 DEFUN ("gmtime", Fgmtime, Sgmtime, 1, 1, |
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159 "gmtime (TIME)\n\ |
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160 \n\ |
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161 Given a value returned from time(), return a structure like that\n\ |
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162 returned from localtime() but with values corresponding to\n\ |
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163 Coordinated Universal Time (UTC).") |
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164 { |
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165 Octave_object retval; |
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166 |
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167 if (args.length () == 1) |
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168 { |
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169 double tmp = args(0).double_value (); |
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170 |
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171 if (! error_state) |
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172 { |
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173 time_t timeval = NINT (tmp); |
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174 double ip; |
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175 double fraction = modf (tmp, &ip); |
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176 |
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177 retval = tree_constant (mk_tm_map (gmtime (&timeval), fraction)); |
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178 } |
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179 } |
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180 else |
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181 print_usage ("gmtime"); |
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182 |
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183 return retval; |
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184 } |
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185 |
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186 DEFUN ("localtime", Flocaltime, Slocaltime, 1, 1, |
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187 "localtime (TIME)\n\ |
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188 \n\ |
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189 Given a value returned from time(), return a structure with\n\ |
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190 the following elements:\n\ |
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191 \n\ |
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192 tm_usec : microseconds after the second (0, 999999)\n\ |
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193 tm_sec : seconds after the minute (0, 61)\n\ |
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194 tm_min : minutes after the hour (0, 59)\n\ |
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195 tm_hour : hours since midnight (0, 23)\n\ |
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196 tm_mday : day of the month (1, 31)\n\ |
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197 tm_mon : months since January (0, 11)\n\ |
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198 tm_year : years since 1900\n\ |
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199 tm_wday : days since Sunday (0, 6)\n\ |
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200 tm_yday : days since January 1 (0, 365)\n\ |
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201 tm_isdst : Daylight Savings Time flag\n\ |
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202 tm_zone : Time zone") |
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203 { |
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204 Octave_object retval; |
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205 |
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206 if (args.length () == 1) |
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207 { |
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208 double tmp = args(0).double_value (); |
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209 |
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210 if (! error_state) |
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211 { |
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212 time_t timeval = NINT (tmp); |
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213 double ip; |
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214 double fraction = modf (tmp, &ip); |
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215 |
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216 retval = tree_constant (mk_tm_map (localtime (&timeval), fraction)); |
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217 } |
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218 } |
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219 else |
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220 print_usage ("localtime"); |
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221 |
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222 return retval; |
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223 } |
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224 |
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225 DEFUN ("mktime", Fmktime, Smktime, 1, 2, |
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226 "mktime (TMSTRUCT)") |
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227 { |
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228 Octave_object retval; |
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229 |
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230 if (args.length () == 1 && args(0).is_map ()) |
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231 { |
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232 Octave_map map = args(0).map_value (); |
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233 |
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234 double fraction; |
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235 |
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236 struct tm *tm = extract_tm (map, fraction); |
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237 |
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238 if (! error_state) |
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239 retval = (double) mktime (tm) + fraction; |
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240 } |
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241 else |
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242 print_usage ("mktime"); |
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243 |
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244 return retval; |
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245 } |
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246 |
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247 DEFUN ("strftime", Fstrftime, Sstrftime, 1, 2, |
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248 "strftime (FMT, TMSTRUCT)\n\ |
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249 \n\ |
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250 Performs `%' substitutions similar to those in printf. Except where\n\ |
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251 noted, substituted fields have a fixed size; numeric fields are\n\ |
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252 padded if necessary. Padding is with zeros by default; for fields\n\ |
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253 that display a single number, padding can be changed or inhibited by\n\ |
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254 following the `%' with one of the modifiers described below.\n\ |
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255 Unknown field specifiers are copied as normal characters. All other\n\ |
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256 characters are copied to the output without change.\n\ |
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257 \n\ |
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258 Supports a superset of the ANSI C field specifiers.\n\ |
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259 \n\ |
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260 Literal character fields:\n\ |
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261 \n\ |
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262 % %\n\ |
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263 n newline\n\ |
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264 t tab\n\ |
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265 \n\ |
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266 Numeric modifiers (a nonstandard extension):\n\ |
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267 \n\ |
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268 - do not pad the field\n\ |
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269 _ pad the field with spaces\n\ |
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270 \n\ |
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271 Time fields:\n\ |
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272 \n\ |
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273 %H hour (00..23)\n\ |
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274 %I hour (01..12)\n\ |
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275 %k hour ( 0..23)\n\ |
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276 %l hour ( 1..12)\n\ |
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277 %M minute (00..59)\n\ |
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278 %p locale's AM or PM\n\ |
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279 %r time, 12-hour (hh:mm:ss [AP]M)\n\ |
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280 %R time, 24-hour (hh:mm)\n\ |
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281 %s time in seconds since 00:00:00, Jan 1, 1970 (a nonstandard extension)\n\ |
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282 %S second (00..61)\n\ |
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283 %T time, 24-hour (hh:mm:ss)\n\ |
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284 %X locale's time representation (%H:%M:%S)\n\ |
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285 %Z time zone (EDT), or nothing if no time zone is determinable\n\ |
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286 \n\ |
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287 Date fields:\n\ |
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288 \n\ |
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289 %a locale's abbreviated weekday name (Sun..Sat)\n\ |
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290 %A locale's full weekday name, variable length (Sunday..Saturday)\n\ |
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291 %b locale's abbreviated month name (Jan..Dec)\n\ |
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292 %B locale's full month name, variable length (January..December)\n\ |
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293 %c locale's date and time (Sat Nov 04 12:02:33 EST 1989)\n\ |
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294 %C century (00..99)\n\ |
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295 %d day of month (01..31)\n\ |
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296 %e day of month ( 1..31)\n\ |
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297 %D date (mm/dd/yy)\n\ |
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298 %h same as %b\n\ |
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299 %j day of year (001..366)\n\ |
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300 %m month (01..12)\n\ |
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301 %U week number of year with Sunday as first day of week (00..53)\n\ |
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302 %w day of week (0..6)\n\ |
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303 %W week number of year with Monday as first day of week (00..53)\n\ |
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304 %x locale's date representation (mm/dd/yy)\n\ |
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305 %y last two digits of year (00..99)\n\ |
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306 %Y year (1970...)") |
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307 { |
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308 Octave_object retval; |
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309 |
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310 if (args.length () == 2 && args(0).is_string () && args(1).is_map ()) |
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311 { |
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312 char *fmt = args(0).string_value (); |
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313 Octave_map map = args(1).map_value (); |
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314 |
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315 double fraction; |
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316 |
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317 struct tm *tm = extract_tm (map, fraction); |
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318 |
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319 if (! error_state) |
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320 { |
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321 int bufsize = 128; |
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322 char *buf = new char [bufsize]; |
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323 |
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324 while (! strftime (buf, bufsize, fmt, tm)) |
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325 { |
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326 delete [] buf; |
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327 bufsize *= 2; |
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328 buf = new char [bufsize]; |
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329 } |
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330 |
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331 retval = buf; |
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332 |
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333 delete [] buf; |
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334 } |
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335 } |
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336 else |
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337 print_usage ("strftime"); |
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338 |
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339 return retval; |
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340 } |
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341 |
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342 /* |
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343 ;;; Local Variables: *** |
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344 ;;; mode: C++ *** |
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345 ;;; page-delimiter: "^/\\*" *** |
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346 ;;; End: *** |
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347 */ |
