Mercurial > cpython-lru_cache-weakref

annotate Modules/timemodule.c @ 5817:48b94de85bf3 legacy-trunk

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Extensive changes by AMK.
author Guido van Rossum <guido@python.org>
date Thu, 17 Jul 1997 16:29:42 +0000
parents 15288c8343a5
children b65eb44422ba
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1 /***********************************************************
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2 Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
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3 The Netherlands.
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4
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5 All Rights Reserved
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6
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7 Permission to use, copy, modify, and distribute this software and its
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8 documentation for any purpose and without fee is hereby granted,
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9 provided that the above copyright notice appear in all copies and that
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10 both that copyright notice and this permission notice appear in
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11 supporting documentation, and that the names of Stichting Mathematisch
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12 Centrum or CWI or Corporation for National Research Initiatives or
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13 CNRI not be used in advertising or publicity pertaining to
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14 distribution of the software without specific, written prior
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15 permission.
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16
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17 While CWI is the initial source for this software, a modified version
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18 is made available by the Corporation for National Research Initiatives
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19 (CNRI) at the Internet address ftp://ftp.python.org.
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20
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21 STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
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22 REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
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23 MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
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24 CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
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25 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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26 PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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27 TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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28 PERFORMANCE OF THIS SOFTWARE.
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29
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30 ******************************************************************/
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31
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32 /* Time module */
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33
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34 #include "Python.h"
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35
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36 #ifdef HAVE_SELECT
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37 #include "mymath.h"
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38 #endif
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39
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40 #ifdef macintosh
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41 #include <time.h>
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42 #else
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43 #include <sys/types.h>
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44 #endif
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45
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46 #ifdef QUICKWIN
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47 #include <io.h>
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48 #endif
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49
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50 #ifdef HAVE_UNISTD_H
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51 #include <unistd.h>
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52 #endif
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53
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54 #ifdef HAVE_SELECT
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55 #include "myselect.h"
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56 #else
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57 #include "mytime.h"
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58 #endif
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59
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60 #ifdef HAVE_FTIME
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61 #include <sys/timeb.h>
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62 #ifndef MS_WINDOWS
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63 extern int ftime();
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64 #endif /* MS_WINDOWS */
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65 #endif /* HAVE_FTIME */
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66
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67 #ifdef __WATCOMC__
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68 #include <i86.h>
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69 #else
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70 #ifdef MS_WINDOWS
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71 #include <windows.h>
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72 #ifdef MS_WIN16
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73 /* These overrides not needed for Win32 */
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74 #define timezone _timezone
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75 #define tzname _tzname
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76 #define daylight _daylight
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77 #define altzone _altzone
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78 #endif /* MS_WIN16 */
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79 #endif /* MS_WINDOWS */
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80 #endif /* !__WATCOMC__ */
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81
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82 #ifdef MS_WIN32
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83 /* Win32 has better clock replacement */
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84 #include <largeint.h>
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85 #undef HAVE_CLOCK /* We have our own version down below */
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86 #endif /* MS_WIN32 */
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87
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88 /* Forward declarations */
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89 static int floatsleep Py_PROTO((double));
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90 static double floattime Py_PROTO(());
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91
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92 static PyObject *
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93 time_time(self, args)
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94 PyObject *self;
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95 PyObject *args;
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96 {
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97 double secs;
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98 if (!PyArg_NoArgs(args))
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99 return NULL;
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100 secs = floattime();
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101 if (secs == 0.0) {
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102 PyErr_SetFromErrno(PyExc_IOError);
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103 return NULL;
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104 }
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105 return PyFloat_FromDouble(secs);
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106 }
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107
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108 #ifdef HAVE_CLOCK
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109
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110 #ifndef CLOCKS_PER_SEC
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111 #ifdef CLK_TCK
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112 #define CLOCKS_PER_SEC CLK_TCK
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113 #else
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114 #define CLOCKS_PER_SEC 1000000
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115 #endif
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116 #endif
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117
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118 static PyObject *
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119 time_clock(self, args)
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120 PyObject *self;
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121 PyObject *args;
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122 {
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123 if (!PyArg_NoArgs(args))
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124 return NULL;
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125 return PyFloat_FromDouble(((double)clock()) / CLOCKS_PER_SEC);
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126 }
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127 #endif /* HAVE_CLOCK */
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128
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129 #ifdef MS_WIN32
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130 /* Due to Mark Hammond */
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131 static PyObject *
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132 time_clock(self, args)
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133 PyObject *self;
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134 PyObject *args;
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135 {
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136 static LARGE_INTEGER ctrStart;
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137 static LARGE_INTEGER divisor = {0,0};
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138 LARGE_INTEGER now, diff, rem;
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139
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140 if (!PyArg_NoArgs(args))
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141 return NULL;
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142
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143 if (LargeIntegerEqualToZero(divisor)) {
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144 QueryPerformanceCounter(&ctrStart);
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145 if (!QueryPerformanceFrequency(&divisor) ||
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146 LargeIntegerEqualToZero(divisor)) {
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147 /* Unlikely to happen -
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148 this works on all intel machines at least!
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149 Revert to clock() */
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150 return PyFloat_FromDouble(clock());
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151 }
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152 }
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153 QueryPerformanceCounter(&now);
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154 diff = LargeIntegerSubtract(now, ctrStart);
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155 diff = LargeIntegerDivide(diff, divisor, &rem);
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156 /* XXX - we assume both divide results fit in 32 bits. This is
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157 true on Intels. First person who can afford a machine that
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158 doesnt deserves to fix it :-)
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159 */
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160 return PyFloat_FromDouble((double)diff.LowPart +
15288c8343a5 Win32 precision clock() -- Mark Hammond.
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161 ((double)rem.LowPart / (double)divisor.LowPart));
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162 }
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163 #define HAVE_CLOCK /* So it gets included in the methods */
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164 #endif /* MS_WIN32 */
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165
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166 static PyObject *
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167 time_sleep(self, args)
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168 PyObject *self;
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169 PyObject *args;
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170 {
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171 double secs;
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172 if (!PyArg_Parse(args, "d", &secs))
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173 return NULL;
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174 Py_BEGIN_ALLOW_THREADS
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175 if (floatsleep(secs) != 0) {
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176 Py_BLOCK_THREADS
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177 return NULL;
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178 }
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179 Py_END_ALLOW_THREADS
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180 Py_INCREF(Py_None);
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181 return Py_None;
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182 }
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183
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184 static PyObject *
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185 time_convert(when, function)
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186 time_t when;
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187 struct tm * (*function) Py_PROTO((const time_t *));
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188 {
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189 struct tm *p;
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190 errno = 0;
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191 p = function(&when);
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192 if (p == NULL) {
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193 #ifdef EINVAL
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194 if (errno == 0)
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195 errno = EINVAL;
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196 #endif
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197 return PyErr_SetFromErrno(PyExc_IOError);
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198 }
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199 return Py_BuildValue("(iiiiiiiii)",
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200 p->tm_year + 1900,
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201 p->tm_mon + 1, /* Want January == 1 */
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202 p->tm_mday,
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203 p->tm_hour,
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204 p->tm_min,
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205 p->tm_sec,
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206 (p->tm_wday + 6) % 7, /* Want Monday == 0 */
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207 p->tm_yday + 1, /* Want January, 1 == 1 */
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208 p->tm_isdst);
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209 }
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210
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211 static PyObject *
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212 time_gmtime(self, args)
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213 PyObject *self;
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214 PyObject *args;
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215 {
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
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216 double when;
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217 if (!PyArg_Parse(args, "d", &when))
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218 return NULL;
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219 return time_convert((time_t)when, gmtime);
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
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220 }
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
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221
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222 static PyObject *
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223 time_localtime(self, args)
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224 PyObject *self;
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225 PyObject *args;
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226 {
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
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227 double when;
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228 if (!PyArg_Parse(args, "d", &when))
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229 return NULL;
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
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230 return time_convert((time_t)when, localtime);
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231 }
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
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232
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233 static int
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234 gettmarg(args, p)
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235 PyObject *args;
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diff changeset
236 struct tm *p;
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237 {
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238 if (!PyArg_Parse(args, "(iiiiiiiii)",
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239 &p->tm_year,
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240 &p->tm_mon,
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241 &p->tm_mday,
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242 &p->tm_hour,
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243 &p->tm_min,
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244 &p->tm_sec,
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245 &p->tm_wday,
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246 &p->tm_yday,
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247 &p->tm_isdst))
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248 return 0;
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249 if (p->tm_year >= 1900)
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250 p->tm_year -= 1900;
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251 p->tm_mon--;
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252 p->tm_wday = (p->tm_wday + 1) % 7;
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253 p->tm_yday--;
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254 return 1;
92e6a8cf14be * pythonmain.c: -k option, usage message, more environment flags.
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255 }
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256
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257 #ifdef HAVE_STRFTIME
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258 static PyObject *
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259 time_strftime(self, args)
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260 PyObject *self;
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261 PyObject *args;
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262 {
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263 struct tm buf;
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264 const char *fmt;
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265 char *outbuf = 0;
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266 int i;
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267
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268 if (!PyArg_ParseTuple(args, "s(iiiiiiiii)",
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269 &fmt,
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270 &(buf.tm_year),
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271 &(buf.tm_mon),
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272 &(buf.tm_mday),
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273 &(buf.tm_hour),
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274 &(buf.tm_min),
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275 &(buf.tm_sec),
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276 &(buf.tm_wday),
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277 &(buf.tm_yday),
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diff changeset
278 &(buf.tm_isdst)))
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279 return NULL;
d7eea9013e73 added time.strftime()
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280 if (buf.tm_year >= 1900)
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281 buf.tm_year -= 1900;
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282 buf.tm_mon--;
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283 buf.tm_wday = (buf.tm_wday + 1) % 7;
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284 buf.tm_yday--;
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285 /* I hate these functions that presume you know how big the output
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286 * will be ahead of time...
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287 */
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288 for (i = 1024 ; i <= 8192 ; i += 1024) {
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289 outbuf = malloc(i);
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290 if (outbuf == NULL) {
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291 return PyErr_NoMemory();
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292 }
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293 if (strftime(outbuf, i-1, fmt, &buf) != 0) {
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294 PyObject *ret;
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295 ret = PyString_FromString(outbuf);
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296 free(outbuf);
d7eea9013e73 added time.strftime()
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297 return ret;
d7eea9013e73 added time.strftime()
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298 }
d7eea9013e73 added time.strftime()
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299 free(outbuf);
d7eea9013e73 added time.strftime()
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300 }
5100
32310251d767 Issue a more meaningful error if strftime keeps returning a NULL pointer.
Guido van Rossum <guido@python.org>
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301 PyErr_SetString(PyExc_ValueError,
32310251d767 Issue a more meaningful error if strftime keeps returning a NULL pointer.
Guido van Rossum <guido@python.org>
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diff changeset
302 "bad strftime format or result too big");
32310251d767 Issue a more meaningful error if strftime keeps returning a NULL pointer.
Guido van Rossum <guido@python.org>
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303 return NULL;
3086
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Guido van Rossum <guido@python.org>
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304 }
d7eea9013e73 added time.strftime()
Guido van Rossum <guido@python.org>
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305 #endif /* HAVE_STRFTIME */
d7eea9013e73 added time.strftime()
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diff changeset
306
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diff changeset
307 static PyObject *
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308 time_asctime(self, args)
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309 PyObject *self;
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310 PyObject *args;
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311 {
92e6a8cf14be * pythonmain.c: -k option, usage message, more environment flags.
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diff changeset
312 struct tm buf;
92e6a8cf14be * pythonmain.c: -k option, usage message, more environment flags.
Guido van Rossum <guido@python.org>
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diff changeset
313 char *p;
92e6a8cf14be * pythonmain.c: -k option, usage message, more environment flags.
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diff changeset
314 if (!gettmarg(args, &buf))
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315 return NULL;
92e6a8cf14be * pythonmain.c: -k option, usage message, more environment flags.
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diff changeset
316 p = asctime(&buf);
92e6a8cf14be * pythonmain.c: -k option, usage message, more environment flags.
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diff changeset
317 if (p[24] == '\n')
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318 p[24] = '\0';
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319 return PyString_FromString(p);
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320 }
92e6a8cf14be * pythonmain.c: -k option, usage message, more environment flags.
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321
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322 static PyObject *
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323 time_ctime(self, args)
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324 PyObject *self;
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325 PyObject *args;
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326 {
92e6a8cf14be * pythonmain.c: -k option, usage message, more environment flags.
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diff changeset
327 double dt;
92e6a8cf14be * pythonmain.c: -k option, usage message, more environment flags.
Guido van Rossum <guido@python.org>
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328 time_t tt;
92e6a8cf14be * pythonmain.c: -k option, usage message, more environment flags.
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329 char *p;
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330 if (!PyArg_Parse(args, "d", &dt))
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331 return NULL;
4216
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Guido van Rossum <guido@python.org>
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332 tt = (time_t)dt;
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333 p = ctime(&tt);
92e6a8cf14be * pythonmain.c: -k option, usage message, more environment flags.
Guido van Rossum <guido@python.org>
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334 if (p[24] == '\n')
92e6a8cf14be * pythonmain.c: -k option, usage message, more environment flags.
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335 p[24] = '\0';
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336 return PyString_FromString(p);
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337 }
92e6a8cf14be * pythonmain.c: -k option, usage message, more environment flags.
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338
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339 static PyObject *
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340 time_mktime(self, args)
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341 PyObject *self;
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342 PyObject *args;
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343 {
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
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344 struct tm buf;
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345 time_t tt;
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346 tt = time(&tt);
2403620ca931 Watcom changes.
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diff changeset
347 buf = *localtime(&tt);
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diff changeset
348 if (!gettmarg(args, &buf))
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6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
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349 return NULL;
3592
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diff changeset
350 tt = mktime(&buf);
2403620ca931 Watcom changes.
Guido van Rossum <guido@python.org>
parents: 3419
diff changeset
351 if (tt == (time_t)(-1)) {
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diff changeset
352 PyErr_SetString(PyExc_OverflowError,
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diff changeset
353 "mktime argument out of range");
3592
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354 return NULL;
2403620ca931 Watcom changes.
Guido van Rossum <guido@python.org>
parents: 3419
diff changeset
355 }
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diff changeset
356 return PyFloat_FromDouble((double)tt);
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6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
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357 }
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
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358
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diff changeset
359 static PyMethodDef time_methods[] = {
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diff changeset
360 {"time", time_time},
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Guido van Rossum <guido@python.org>
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diff changeset
361 #ifdef HAVE_CLOCK
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diff changeset
362 {"clock", time_clock},
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
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diff changeset
363 #endif
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
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364 {"sleep", time_sleep},
1313
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
365 {"gmtime", time_gmtime},
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
366 {"localtime", time_localtime},
1318
92e6a8cf14be * pythonmain.c: -k option, usage message, more environment flags.
Guido van Rossum <guido@python.org>
parents: 1313
diff changeset
367 {"asctime", time_asctime},
92e6a8cf14be * pythonmain.c: -k option, usage message, more environment flags.
Guido van Rossum <guido@python.org>
parents: 1313
diff changeset
368 {"ctime", time_ctime},
1313
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Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
369 {"mktime", time_mktime},
3086
d7eea9013e73 added time.strftime()
Guido van Rossum <guido@python.org>
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diff changeset
370 #ifdef HAVE_STRFTIME
3388
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Guido van Rossum <guido@python.org>
parents: 3140
diff changeset
371 {"strftime", time_strftime, 1},
3086
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Guido van Rossum <guido@python.org>
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diff changeset
372 #endif
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
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373 {NULL, NULL} /* sentinel */
fc6fcd7df4f7 Initial revision
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diff changeset
374 };
fc6fcd7df4f7 Initial revision
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diff changeset
375
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diff changeset
376 static void
a3bd61632f14 fix leaks
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diff changeset
377 ins(d, name, v)
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diff changeset
378 PyObject *d;
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diff changeset
379 char *name;
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diff changeset
380 PyObject *v;
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diff changeset
381 {
a3bd61632f14 fix leaks
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diff changeset
382 if (v == NULL)
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diff changeset
383 Py_FatalError("Can't initialize time module -- NULL value");
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diff changeset
384 if (PyDict_SetItemString(d, name, v) != 0)
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diff changeset
385 Py_FatalError(
4618
06c7c7de6976 Added #ifdef around ``extern int ftime();'' for MS WINDOWS (which has
Guido van Rossum <guido@python.org>
parents: 4616
diff changeset
386 "Can't initialize time module -- PyDict_SetItemString failed");
4615
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diff changeset
387 Py_DECREF(v);
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diff changeset
388 }
a3bd61632f14 fix leaks
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parents: 2061
diff changeset
389
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
390 void
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
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diff changeset
391 inittime()
fc6fcd7df4f7 Initial revision
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parents:
diff changeset
392 {
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diff changeset
393 PyObject *m, *d;
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diff changeset
394 m = Py_InitModule("time", time_methods);
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diff changeset
395 d = PyModule_GetDict(m);
1746
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
396 #ifdef HAVE_TZNAME
1313
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
397 tzset();
4615
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diff changeset
398 ins(d, "timezone", PyInt_FromLong((long)timezone));
1746
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
399 #ifdef HAVE_ALTZONE
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diff changeset
400 ins(d, "altzone", PyInt_FromLong((long)altzone));
1746
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Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
401 #else
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diff changeset
402 ins(d, "altzone", PyInt_FromLong((long)timezone-3600));
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Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
403 #endif
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diff changeset
404 ins(d, "daylight", PyInt_FromLong((long)daylight));
87617701d721 Greatly renamed.
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parents: 4607
diff changeset
405 ins(d, "tzname", Py_BuildValue("(zz)", tzname[0], tzname[1]));
1746
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
406 #else /* !HAVE_TZNAME */
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
407 #if HAVE_TM_ZONE
1313
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
408 {
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
409 #define YEAR ((time_t)((365 * 24 + 6) * 3600))
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
410 time_t t;
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
411 struct tm *p;
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
412 long winterzone, summerzone;
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
413 char wintername[10], summername[10];
1746
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
414 /* XXX This won't work on the southern hemisphere.
4947
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Barry Warsaw <barry@python.org>
parents: 4618
diff changeset
415 XXX Anybody got a better idea? */
1313
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
416 t = (time((time_t *)0) / YEAR) * YEAR;
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
417 p = localtime(&t);
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
418 winterzone = -p->tm_gmtoff;
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
419 strncpy(wintername, p->tm_zone ? p->tm_zone : " ", 9);
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
420 wintername[9] = '\0';
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
421 t += YEAR/2;
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
422 p = localtime(&t);
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
423 summerzone = -p->tm_gmtoff;
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
424 strncpy(summername, p->tm_zone ? p->tm_zone : " ", 9);
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
parents: 1191
diff changeset
425 summername[9] = '\0';
4615
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diff changeset
426 ins(d, "timezone", PyInt_FromLong(winterzone));
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Barry Warsaw <barry@python.org>
parents: 4607
diff changeset
427 ins(d, "altzone", PyInt_FromLong(summerzone));
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parents: 4607
diff changeset
428 ins(d, "daylight",
87617701d721 Greatly renamed.
Barry Warsaw <barry@python.org>
parents: 4607
diff changeset
429 PyInt_FromLong((long)(winterzone != summerzone)));
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diff changeset
430 ins(d, "tzname",
87617701d721 Greatly renamed.
Barry Warsaw <barry@python.org>
parents: 4607
diff changeset
431 Py_BuildValue("(zz)", wintername, summername));
1313
6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c.
Guido van Rossum <guido@python.org>
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diff changeset
432 }
1746
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Guido van Rossum <guido@python.org>
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diff changeset
433 #endif /* HAVE_TM_ZONE */
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
434 #endif /* !HAVE_TZNAME */
4947
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Barry Warsaw <barry@python.org>
parents: 4618
diff changeset
435 if (PyErr_Occurred())
78d880043129 Formatting, and minor error detection
Barry Warsaw <barry@python.org>
parents: 4618
diff changeset
436 Py_FatalError("Can't initialize time module");
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
437 }
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
438
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
439
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Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
440 /* Implement floattime() for various platforms */
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
441
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Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
442 static double
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
443 floattime()
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
444 {
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Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
445 /* There are three ways to get the time:
4947
78d880043129 Formatting, and minor error detection
Barry Warsaw <barry@python.org>
parents: 4618
diff changeset
446 (1) gettimeofday() -- resolution in microseconds
78d880043129 Formatting, and minor error detection
Barry Warsaw <barry@python.org>
parents: 4618
diff changeset
447 (2) ftime() -- resolution in milliseconds
78d880043129 Formatting, and minor error detection
Barry Warsaw <barry@python.org>
parents: 4618
diff changeset
448 (3) time() -- resolution in seconds
78d880043129 Formatting, and minor error detection
Barry Warsaw <barry@python.org>
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diff changeset
449 In all cases the return value is a float in seconds.
78d880043129 Formatting, and minor error detection
Barry Warsaw <barry@python.org>
parents: 4618
diff changeset
450 Since on some systems (e.g. SCO ODT 3.0) gettimeofday() may
78d880043129 Formatting, and minor error detection
Barry Warsaw <barry@python.org>
parents: 4618
diff changeset
451 fail, so we fall back on ftime() or time().
78d880043129 Formatting, and minor error detection
Barry Warsaw <barry@python.org>
parents: 4618
diff changeset
452 Note: clock resolution does not imply clock accuracy! */
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parents: 1413
diff changeset
453 #ifdef HAVE_GETTIMEOFDAY
4947
78d880043129 Formatting, and minor error detection
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parents: 4618
diff changeset
454 {
78d880043129 Formatting, and minor error detection
Barry Warsaw <barry@python.org>
parents: 4618
diff changeset
455 struct timeval t;
2055
cf31eab6ab5a Another bulky set of minor changes.
Guido van Rossum <guido@python.org>
parents: 1827
diff changeset
456 #ifdef GETTIMEOFDAY_NO_TZ
4947
78d880043129 Formatting, and minor error detection
Barry Warsaw <barry@python.org>
parents: 4618
diff changeset
457 if (gettimeofday(&t) == 0)
78d880043129 Formatting, and minor error detection
Barry Warsaw <barry@python.org>
parents: 4618
diff changeset
458 return (double)t.tv_sec + t.tv_usec*0.000001;
2055
cf31eab6ab5a Another bulky set of minor changes.
Guido van Rossum <guido@python.org>
parents: 1827
diff changeset
459 #else /* !GETTIMEOFDAY_NO_TZ */
4947
78d880043129 Formatting, and minor error detection
Barry Warsaw <barry@python.org>
parents: 4618
diff changeset
460 if (gettimeofday(&t, (struct timezone *)NULL) == 0)
78d880043129 Formatting, and minor error detection
Barry Warsaw <barry@python.org>
parents: 4618
diff changeset
461 return (double)t.tv_sec + t.tv_usec*0.000001;
2055
cf31eab6ab5a Another bulky set of minor changes.
Guido van Rossum <guido@python.org>
parents: 1827
diff changeset
462 #endif /* !GETTIMEOFDAY_NO_TZ */
4947
78d880043129 Formatting, and minor error detection
Barry Warsaw <barry@python.org>
parents: 4618
diff changeset
463 }
1746
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
464 #endif /* !HAVE_GETTIMEOFDAY */
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78d880043129 Formatting, and minor error detection
Barry Warsaw <barry@python.org>
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diff changeset
465 {
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Guido van Rossum <guido@python.org>
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diff changeset
466 #ifdef HAVE_FTIME
4947
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Barry Warsaw <barry@python.org>
parents: 4618
diff changeset
467 struct timeb t;
78d880043129 Formatting, and minor error detection
Barry Warsaw <barry@python.org>
parents: 4618
diff changeset
468 ftime(&t);
78d880043129 Formatting, and minor error detection
Barry Warsaw <barry@python.org>
parents: 4618
diff changeset
469 return (double)t.time + (double)t.millitm * (double)0.001;
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Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
470 #else /* !HAVE_FTIME */
4947
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parents: 4618
diff changeset
471 time_t secs;
78d880043129 Formatting, and minor error detection
Barry Warsaw <barry@python.org>
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diff changeset
472 time(&secs);
78d880043129 Formatting, and minor error detection
Barry Warsaw <barry@python.org>
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473 return (double)secs;
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474 #endif /* !HAVE_FTIME */
4947
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Barry Warsaw <barry@python.org>
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diff changeset
475 }
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
476 }
1746
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Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
477
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
478
1746
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Guido van Rossum <guido@python.org>
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diff changeset
479 /* Implement floatsleep() for various platforms.
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diff changeset
480 When interrupted (or when another error occurs), return -1 and
1940892d2fe3 Merge alpha100 branch back to main trunk
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diff changeset
481 set an exception; else return 0. */
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
482
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
483 static int
2506
9d6e97d66670 changes for MPW
Guido van Rossum <guido@python.org>
parents: 2215
diff changeset
484 #ifdef MPW
9d6e97d66670 changes for MPW
Guido van Rossum <guido@python.org>
parents: 2215
diff changeset
485 floatsleep(double secs)
9d6e97d66670 changes for MPW
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parents: 2215
diff changeset
486 #else
4947
78d880043129 Formatting, and minor error detection
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diff changeset
487 floatsleep(secs)
1181
950cd37fcddc * Makefile: use cp -r to install the library
Guido van Rossum <guido@python.org>
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diff changeset
488 double secs;
2506
9d6e97d66670 changes for MPW
Guido van Rossum <guido@python.org>
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489 #endif /* MPW */
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
490 {
5100
32310251d767 Issue a more meaningful error if strftime keeps returning a NULL pointer.
Guido van Rossum <guido@python.org>
parents: 4947
diff changeset
491 /* XXX Should test for MS_WIN32 first! */
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Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
492 #ifdef HAVE_SELECT
143
1870d82de069 Added BSD implementations of millisleep.
Guido van Rossum <guido@python.org>
parents: 86
diff changeset
493 struct timeval t;
1181
950cd37fcddc * Makefile: use cp -r to install the library
Guido van Rossum <guido@python.org>
parents: 1177
diff changeset
494 double frac;
950cd37fcddc * Makefile: use cp -r to install the library
Guido van Rossum <guido@python.org>
parents: 1177
diff changeset
495 frac = fmod(secs, 1.0);
950cd37fcddc * Makefile: use cp -r to install the library
Guido van Rossum <guido@python.org>
parents: 1177
diff changeset
496 secs = floor(secs);
950cd37fcddc * Makefile: use cp -r to install the library
Guido van Rossum <guido@python.org>
parents: 1177
diff changeset
497 t.tv_sec = (long)secs;
950cd37fcddc * Makefile: use cp -r to install the library
Guido van Rossum <guido@python.org>
parents: 1177
diff changeset
498 t.tv_usec = (long)(frac*1000000.0);
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parents: 1413
diff changeset
499 if (select(0, (fd_set *)0, (fd_set *)0, (fd_set *)0, &t) != 0) {
4615
87617701d721 Greatly renamed.
Barry Warsaw <barry@python.org>
parents: 4607
diff changeset
500 PyErr_SetFromErrno(PyExc_IOError);
1746
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
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diff changeset
501 return -1;
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
502 }
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
503 #else /* !HAVE_SELECT */
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Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
504 #ifdef macintosh
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Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
505 #define MacTicks (* (long *)0x16A)
1940892d2fe3 Merge alpha100 branch back to main trunk
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parents: 1413
diff changeset
506 long deadline;
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
507 deadline = MacTicks + (long)(secs * 60.0);
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
508 while (MacTicks < deadline) {
4615
87617701d721 Greatly renamed.
Barry Warsaw <barry@python.org>
parents: 4607
diff changeset
509 if (PyErr_CheckSignals())
1746
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
510 return -1;
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
511 }
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
512 #else /* !macintosh */
3592
2403620ca931 Watcom changes.
Guido van Rossum <guido@python.org>
parents: 3419
diff changeset
513 #ifdef __WATCOMC__
2403620ca931 Watcom changes.
Guido van Rossum <guido@python.org>
parents: 3419
diff changeset
514 /* XXX Can't interrupt this sleep */
2403620ca931 Watcom changes.
Guido van Rossum <guido@python.org>
parents: 3419
diff changeset
515 delay((int)(secs * 1000 + 0.5)); /* delay() uses milliseconds */
2403620ca931 Watcom changes.
Guido van Rossum <guido@python.org>
parents: 3419
diff changeset
516 #else /* !__WATCOMC__ */
1322
f3c907efe5d7 * config.c: different default PYTHONPATH for MS-DOS
Guido van Rossum <guido@python.org>
parents: 1319
diff changeset
517 #ifdef MSDOS
1746
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Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
518 struct timeb t1, t2;
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
519 double frac;
4615
87617701d721 Greatly renamed.
Barry Warsaw <barry@python.org>
parents: 4607
diff changeset
520 extern double fmod Py_PROTO((double, double));
87617701d721 Greatly renamed.
Barry Warsaw <barry@python.org>
parents: 4607
diff changeset
521 extern double floor Py_PROTO((double));
1746
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
522 if (secs <= 0.0)
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
523 return;
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
524 frac = fmod(secs, 1.0);
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
525 secs = floor(secs);
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
526 ftime(&t1);
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
527 t2.time = t1.time + (int)secs;
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
528 t2.millitm = t1.millitm + (int)(frac*1000.0);
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
529 while (t2.millitm >= 1000) {
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
530 t2.time++;
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
531 t2.millitm -= 1000;
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
532 }
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
533 for (;;) {
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
534 #ifdef QUICKWIN
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
535 _wyield();
209
e486c849c50c New hacks for include files to get time_t in the most portable way.
Guido van Rossum <guido@python.org>
parents: 181
diff changeset
536 #endif
4615
87617701d721 Greatly renamed.
Barry Warsaw <barry@python.org>
parents: 4607
diff changeset
537 if (PyErr_CheckSignals())
1746
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
538 return -1;
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
539 ftime(&t1);
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Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
540 if (t1.time > t2.time ||
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
541 t1.time == t2.time && t1.millitm >= t2.millitm)
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
542 break;
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
543 }
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
544 #else /* !MSDOS */
4232
886c0f775c97 Sleep() turns out to be win32 specific.
Guido van Rossum <guido@python.org>
parents: 4216
diff changeset
545 #ifdef MS_WIN32
1746
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Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
546 /* XXX Can't interrupt this sleep */
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
547 Sleep((int)(secs*1000));
4232
886c0f775c97 Sleep() turns out to be win32 specific.
Guido van Rossum <guido@python.org>
parents: 4216
diff changeset
548 #else /* !MS_WIN32 */
1746
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
549 /* XXX Can't interrupt this sleep */
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
550 sleep((int)secs);
4232
886c0f775c97 Sleep() turns out to be win32 specific.
Guido van Rossum <guido@python.org>
parents: 4216
diff changeset
551 #endif /* !MS_WIN32 */
1746
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
552 #endif /* !MSDOS */
3592
2403620ca931 Watcom changes.
Guido van Rossum <guido@python.org>
parents: 3419
diff changeset
553 #endif /* !__WATCOMC__ */
1746
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
554 #endif /* !macintosh */
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
555 #endif /* !HAVE_SELECT */
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1413
diff changeset
556 return 0;
209
e486c849c50c New hacks for include files to get time_t in the most portable way.
Guido van Rossum <guido@python.org>
parents: 181
diff changeset
557 }