mirror of https://github.com/python/cpython
49 lines
1.3 KiB
C
49 lines
1.3 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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/**************************************************************************
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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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/* 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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#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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/* 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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