mirror of https://github.com/python/cpython
91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
#ifndef Py_LIMITED_API
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#ifndef Py_PYTIME_H
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#define Py_PYTIME_H
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#include "pyconfig.h" /* include for defines */
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#include "object.h"
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/**************************************************************************
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Symbols and macros to supply platform-independent interfaces to time related
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functions and constants
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**************************************************************************/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef HAVE_GETTIMEOFDAY
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typedef struct timeval _PyTime_timeval;
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#else
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typedef struct {
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time_t tv_sec; /* seconds since Jan. 1, 1970 */
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long tv_usec; /* and microseconds */
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} _PyTime_timeval;
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#endif
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/* Structure used by time.get_clock_info() */
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typedef struct {
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const char *implementation;
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int monotonic;
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int adjusted;
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double resolution;
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} _Py_clock_info_t;
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/* Similar to POSIX gettimeofday but cannot fail. If system gettimeofday
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* fails or is not available, fall back to lower resolution clocks.
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*/
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PyAPI_FUNC(void) _PyTime_gettimeofday(_PyTime_timeval *tp);
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/* Similar to _PyTime_gettimeofday() but retrieve also information on the
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* clock used to get the current time. */
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PyAPI_FUNC(void) _PyTime_gettimeofday_info(
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_PyTime_timeval *tp,
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_Py_clock_info_t *info);
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#define _PyTime_ADD_SECONDS(tv, interval) \
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do { \
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tv.tv_usec += (long) (((long) interval - interval) * 1000000); \
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tv.tv_sec += (time_t) interval + (time_t) (tv.tv_usec / 1000000); \
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tv.tv_usec %= 1000000; \
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} while (0)
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#define _PyTime_INTERVAL(tv_start, tv_end) \
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((tv_end.tv_sec - tv_start.tv_sec) + \
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(tv_end.tv_usec - tv_start.tv_usec) * 0.000001)
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#ifndef Py_LIMITED_API
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/* Convert a number of seconds, int or float, to time_t. */
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PyAPI_FUNC(int) _PyTime_ObjectToTime_t(
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PyObject *obj,
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time_t *sec);
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/* Convert a time_t to a PyLong. */
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PyAPI_FUNC(PyObject *) _PyLong_FromTime_t(
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time_t sec);
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/* Convert a number of seconds, int or float, to a timeval structure.
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usec is in the range [0; 999999] and rounded towards zero.
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For example, -1.2 is converted to (-2, 800000). */
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PyAPI_FUNC(int) _PyTime_ObjectToTimeval(
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PyObject *obj,
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time_t *sec,
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long *usec);
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/* Convert a number of seconds, int or float, to a timespec structure.
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nsec is in the range [0; 999999999] and rounded towards zero.
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For example, -1.2 is converted to (-2, 800000000). */
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PyAPI_FUNC(int) _PyTime_ObjectToTimespec(
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PyObject *obj,
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time_t *sec,
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long *nsec);
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#endif
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/* Dummy to force linking. */
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PyAPI_FUNC(void) _PyTime_Init(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* Py_PYTIME_H */
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#endif /* Py_LIMITED_API */
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