mirror of
https://github.com/python/cpython.git
synced 2025-10-30 21:21:22 +00:00
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
#ifndef Py_LIMITED_API
|
|
#ifndef Py_PYTIME_H
|
|
#define Py_PYTIME_H
|
|
|
|
#include "pyconfig.h" /* include for defines */
|
|
|
|
/**************************************************************************
|
|
Symbols and macros to supply platform-independent interfaces to time related
|
|
functions and constants
|
|
**************************************************************************/
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#ifdef HAVE_GETTIMEOFDAY
|
|
typedef struct timeval _PyTime_timeval;
|
|
#else
|
|
typedef struct {
|
|
time_t tv_sec; /* seconds since Jan. 1, 1970 */
|
|
long tv_usec; /* and microseconds */
|
|
} _PyTime_timeval;
|
|
#endif
|
|
|
|
/* Similar to POSIX gettimeofday but cannot fail. If system gettimeofday
|
|
* fails or is not available, fall back to lower resolution clocks.
|
|
*/
|
|
PyAPI_FUNC(void) _PyTime_gettimeofday(_PyTime_timeval *tp);
|
|
|
|
#define _PyTime_ADD_SECONDS(tv, interval) \
|
|
do { \
|
|
tv.tv_usec += (long) (((long) interval - interval) * 1000000); \
|
|
tv.tv_sec += (time_t) interval + (time_t) (tv.tv_usec / 1000000); \
|
|
tv.tv_usec %= 1000000; \
|
|
} while (0)
|
|
|
|
#define _PyTime_INTERVAL(tv_start, tv_end) \
|
|
((tv_end.tv_sec - tv_start.tv_sec) + \
|
|
(tv_end.tv_usec - tv_start.tv_usec) * 0.000001)
|
|
|
|
/* Dummy to force linking. */
|
|
PyAPI_FUNC(void) _PyTime_Init(void);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* Py_PYTIME_H */
|
|
#endif /* Py_LIMITED_API */
|