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annotate Python/pytime.c @ 75177:fcd0a67e708e

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Issue #14084: Fix a file descriptor leak when importing a module with a bad encoding.
author Antoine Pitrou <solipsis@pitrou.net>
date Wed, 22 Feb 2012 18:08:30 +0100
parents 90eda29a8e03
children 67d9595a833c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #include "Python.h"
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2 #ifdef MS_WINDOWS
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3 #include <windows.h>
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4 #endif
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5
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6 #if defined(__APPLE__) && defined(HAVE_GETTIMEOFDAY) && defined(HAVE_FTIME)
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7 /*
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8 * _PyTime_gettimeofday falls back to ftime when getttimeofday fails because the latter
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9 * might fail on some platforms. This fallback is unwanted on MacOSX because
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10 * that makes it impossible to use a binary build on OSX 10.4 on earlier
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11 * releases of the OS. Therefore claim we don't support ftime.
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12 */
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13 # undef HAVE_FTIME
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14 #endif
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15
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16 #if defined(HAVE_FTIME) && !defined(MS_WINDOWS)
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17 #include <sys/timeb.h>
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18 extern int ftime(struct timeb *);
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19 #endif
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20
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21 void
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22 _PyTime_gettimeofday(_PyTime_timeval *tp)
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23 {
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24 #ifdef MS_WINDOWS
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25 FILETIME system_time;
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26 ULARGE_INTEGER large;
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27 ULONGLONG microseconds;
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28
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29 GetSystemTimeAsFileTime(&system_time);
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30 large.u.LowPart = system_time.dwLowDateTime;
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31 large.u.HighPart = system_time.dwHighDateTime;
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32 /* 11,644,473,600,000,000: number of microseconds between
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33 the 1st january 1601 and the 1st january 1970 (369 years + 89 leap
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34 days). */
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35 microseconds = large.QuadPart / 10 - 11644473600000000;
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36 tp->tv_sec = microseconds / 1000000;
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37 tp->tv_usec = microseconds % 1000000;
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38 #else
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39 /* There are three ways to get the time:
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40 (1) gettimeofday() -- resolution in microseconds
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41 (2) ftime() -- resolution in milliseconds
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42 (3) time() -- resolution in seconds
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43 In all cases the return value in a timeval struct.
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44 Since on some systems (e.g. SCO ODT 3.0) gettimeofday() may
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45 fail, so we fall back on ftime() or time().
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46 Note: clock resolution does not imply clock accuracy! */
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47
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48 #ifdef HAVE_GETTIMEOFDAY
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49 #ifdef GETTIMEOFDAY_NO_TZ
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50 if (gettimeofday(tp) == 0)
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51 return;
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52 #else /* !GETTIMEOFDAY_NO_TZ */
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53 if (gettimeofday(tp, (struct timezone *)NULL) == 0)
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54 return;
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55 #endif /* !GETTIMEOFDAY_NO_TZ */
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56 #endif /* !HAVE_GETTIMEOFDAY */
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57
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58 #if defined(HAVE_FTIME)
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59 {
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60 struct timeb t;
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61 ftime(&t);
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62 tp->tv_sec = t.time;
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63 tp->tv_usec = t.millitm * 1000;
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64 }
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65 #else /* !HAVE_FTIME */
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66 tp->tv_sec = time(NULL);
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67 tp->tv_usec = 0;
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68 #endif /* !HAVE_FTIME */
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69
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70 #endif /* MS_WINDOWS */
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71 }
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73 void
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74 _PyTime_Init()
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75 {
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76 /* Do nothing. Needed to force linking. */
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77 }