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Cleanup pytime.c: add XXX_TO_YYY constants (ex: SEC_TO_US)

This commit is contained in:
Victor Stinner 2015-03-20 01:55:04 +01:00
parent 9a8089b32a
commit 580ef1345a
1 changed files with 19 additions and 13 deletions
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32
Python/pytime.c
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@ -7,6 +7,12 @@
#include <mach/mach_time.h> /* mach_absolute_time(), mach_timebase_info() */
#endif
#define SEC_TO_MS 1000
#define MS_TO_US 1000
#define US_TO_NS 1000
#define SEC_TO_US (SEC_TO_MS * MS_TO_US)
static int
pygettimeofday(_PyTime_timeval *tp, _Py_clock_info_t *info, int raise)
{
@ -24,8 +30,8 @@ pygettimeofday(_PyTime_timeval *tp, _Py_clock_info_t *info, int raise)
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;
tp->tv_sec = microseconds / SEC_TO_US;
tp->tv_usec = microseconds % SEC_TO_US;
if (info) {
DWORD timeAdjustment, timeIncrement;
BOOL isTimeAdjustmentDisabled, ok;
@ -58,7 +64,7 @@ pygettimeofday(_PyTime_timeval *tp, _Py_clock_info_t *info, int raise)
return -1;
}
tp->tv_sec = ts.tv_sec;
tp->tv_usec = ts.tv_nsec / 1000;
tp->tv_usec = ts.tv_nsec / US_TO_NS;
if (info) {
struct timespec res;
@ -92,7 +98,7 @@ pygettimeofday(_PyTime_timeval *tp, _Py_clock_info_t *info, int raise)
}
#endif /* !HAVE_CLOCK_GETTIME */
#endif /* !MS_WINDOWS */
assert(0 <= tp->tv_usec && tp->tv_usec < 1000 * 1000);
assert(0 <= tp->tv_usec && tp->tv_usec < SEC_TO_US);
return 0;
}
@ -126,8 +132,8 @@ pymonotonic(_PyTime_timeval *tp, _Py_clock_info_t *info, int raise)
result = GetTickCount64();
tp->tv_sec = result / 1000;
tp->tv_usec = (result % 1000) * 1000;
tp->tv_sec = result / SEC_TO_MS;
tp->tv_usec = (result % SEC_TO_MS) * MS_TO_US;
if (info) {
DWORD timeAdjustment, timeIncrement;
@ -157,12 +163,12 @@ pymonotonic(_PyTime_timeval *tp, _Py_clock_info_t *info, int raise)
time = mach_absolute_time();
/* nanoseconds => microseconds */
time /= 1000;
time /= US_TO_NS;
/* apply timebase factor */
time *= timebase.numer;
time /= timebase.denom;
tp->tv_sec = time / (1000 * 1000);
tp->tv_usec = time % (1000 * 1000);
tp->tv_sec = time / SEC_TO_US;
tp->tv_usec = time % SEC_TO_US;
if (info) {
info->implementation = "mach_absolute_time()";
@ -205,9 +211,9 @@ pymonotonic(_PyTime_timeval *tp, _Py_clock_info_t *info, int raise)
info->resolution = res.tv_sec + res.tv_nsec * 1e-9;
}
tp->tv_sec = ts.tv_sec;
tp->tv_usec = ts.tv_nsec / 1000;
tp->tv_usec = ts.tv_nsec / US_TO_NS;
#endif
assert(0 <= tp->tv_usec && tp->tv_usec < 1000 * 1000);
assert(0 <= tp->tv_usec && tp->tv_usec < SEC_TO_US);
#ifdef Py_DEBUG
/* monotonic clock cannot go backward */
assert(last.tv_usec == -1
@ -380,8 +386,8 @@ _PyTime_AddDouble(_PyTime_timeval *tv, double interval, _PyTime_round_t round)
tv->tv_sec += tv2.tv_sec;
tv->tv_usec += tv2.tv_usec;
tv->tv_sec += (time_t)(tv->tv_usec / 1000000);
tv->tv_usec %= 1000000;
tv->tv_sec += (time_t)(tv->tv_usec / SEC_TO_US);
tv->tv_usec %= SEC_TO_US;
}
int