123 lines
3.3 KiB
C
123 lines
3.3 KiB
C
#include "Python.h"
|
|
#ifdef MS_WINDOWS
|
|
#include <windows.h>
|
|
#endif
|
|
|
|
#if defined(__APPLE__) && defined(HAVE_GETTIMEOFDAY) && defined(HAVE_FTIME)
|
|
/*
|
|
* _PyTime_gettimeofday falls back to ftime when getttimeofday fails because the latter
|
|
* might fail on some platforms. This fallback is unwanted on MacOSX because
|
|
* that makes it impossible to use a binary build on OSX 10.4 on earlier
|
|
* releases of the OS. Therefore claim we don't support ftime.
|
|
*/
|
|
# undef HAVE_FTIME
|
|
#endif
|
|
|
|
#if defined(HAVE_FTIME) && !defined(MS_WINDOWS)
|
|
#include <sys/timeb.h>
|
|
extern int ftime(struct timeb *);
|
|
#endif
|
|
|
|
void
|
|
_PyTime_gettimeofday(_PyTime_timeval *tp)
|
|
{
|
|
#ifdef MS_WINDOWS
|
|
FILETIME system_time;
|
|
ULARGE_INTEGER large;
|
|
ULONGLONG microseconds;
|
|
|
|
GetSystemTimeAsFileTime(&system_time);
|
|
large.u.LowPart = system_time.dwLowDateTime;
|
|
large.u.HighPart = system_time.dwHighDateTime;
|
|
/* 11,644,473,600,000,000: number of microseconds between
|
|
the 1st january 1601 and the 1st january 1970 (369 years + 89 leap
|
|
days). */
|
|
microseconds = large.QuadPart / 10 - 11644473600000000;
|
|
tp->tv_sec = microseconds / 1000000;
|
|
tp->tv_usec = microseconds % 1000000;
|
|
#else
|
|
/* There are three ways to get the time:
|
|
(1) gettimeofday() -- resolution in microseconds
|
|
(2) ftime() -- resolution in milliseconds
|
|
(3) time() -- resolution in seconds
|
|
In all cases the return value in a timeval struct.
|
|
Since on some systems (e.g. SCO ODT 3.0) gettimeofday() may
|
|
fail, so we fall back on ftime() or time().
|
|
Note: clock resolution does not imply clock accuracy! */
|
|
|
|
#ifdef HAVE_GETTIMEOFDAY
|
|
#ifdef GETTIMEOFDAY_NO_TZ
|
|
if (gettimeofday(tp) == 0)
|
|
return;
|
|
#else /* !GETTIMEOFDAY_NO_TZ */
|
|
if (gettimeofday(tp, (struct timezone *)NULL) == 0)
|
|
return;
|
|
#endif /* !GETTIMEOFDAY_NO_TZ */
|
|
#endif /* !HAVE_GETTIMEOFDAY */
|
|
|
|
#if defined(HAVE_FTIME)
|
|
{
|
|
struct timeb t;
|
|
ftime(&t);
|
|
tp->tv_sec = t.time;
|
|
tp->tv_usec = t.millitm * 1000;
|
|
}
|
|
#else /* !HAVE_FTIME */
|
|
tp->tv_sec = time(NULL);
|
|
tp->tv_usec = 0;
|
|
#endif /* !HAVE_FTIME */
|
|
|
|
#endif /* MS_WINDOWS */
|
|
}
|
|
|
|
int
|
|
_PyTime_ObjectToTimespec(PyObject *obj, time_t *sec, long *nsec)
|
|
{
|
|
if (PyFloat_Check(obj)) {
|
|
double d, intpart, floatpart, err;
|
|
|
|
d = PyFloat_AsDouble(obj);
|
|
floatpart = modf(d, &intpart);
|
|
if (floatpart < 0) {
|
|
floatpart = 1.0 + floatpart;
|
|
intpart -= 1.0;
|
|
}
|
|
|
|
*sec = (time_t)intpart;
|
|
err = intpart - (double)*sec;
|
|
if (err <= -1.0 || err >= 1.0)
|
|
goto overflow;
|
|
|
|
floatpart *= 1e9;
|
|
*nsec = (long)floatpart;
|
|
return 0;
|
|
}
|
|
else {
|
|
#if defined(HAVE_LONG_LONG) && SIZEOF_TIME_T == SIZEOF_LONG_LONG
|
|
*sec = PyLong_AsLongLong(obj);
|
|
#else
|
|
assert(sizeof(time_t) <= sizeof(long));
|
|
*sec = PyLong_AsLong(obj);
|
|
#endif
|
|
if (*sec == -1 && PyErr_Occurred()) {
|
|
if (PyErr_ExceptionMatches(PyExc_OverflowError))
|
|
goto overflow;
|
|
else
|
|
return -1;
|
|
}
|
|
*nsec = 0;
|
|
return 0;
|
|
}
|
|
|
|
overflow:
|
|
PyErr_SetString(PyExc_OverflowError,
|
|
"timestamp out of range for platform time_t");
|
|
return -1;
|
|
}
|
|
|
|
void
|
|
_PyTime_Init()
|
|
{
|
|
/* Do nothing. Needed to force linking. */
|
|
}
|