Nils O. Selåsdal
87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
#ifndef UC_TIME_H_
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#define UC_TIME_H_
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#include <sys/time.h>
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#include <stdint.h>
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/** Add two struct timeval.
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*
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* @param dst where to store the result
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* @param a first timeval to add
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* @param b second timeval to add
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* @return dst
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*/
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struct timeval *uc_tvadd(struct timeval *dst, const struct timeval *a, const struct timeval *b);
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/** Subtract two struct timeval.
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*
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* @param dst where to store the result
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* @param a first timeval to subtract
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* @param b second timeval to subtract
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* @return dst
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*/
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struct timeval *uc_tvsub(struct timeval *dst, const struct timeval *a, const struct timeval *b);
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/** Add two struct timevals.
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*
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* @param dst where to store the result
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* @param a first timeval to add
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* @param b second timeval to add
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* @return dst
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*/
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int uc_tvcmp(const struct timeval *a, const struct timeval *b);
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/** Add two struct timespec.
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*
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* @param dst where to store the result
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* @param a first timespec to add
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* @param b second timespec to add
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* @return dst
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*/
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struct timespec *uc_tsadd(struct timespec *dst, const struct timespec *a, const struct timespec *b);
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/** Subtract two struct timespec.
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*
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* @param dst where to store the result
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* @param a first timespec to subtract
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* @param b second timespec to subtract
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* @return dst
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*/
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struct timespec *uc_tssub(struct timespec *dst, const struct timespec *a, const struct timespec *b);
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/** Add two struct timespec.
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*
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* @param a first timespec to add
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* @param b second timespec to add
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* @return < 0 if a is less than b, 0 if a and be are equal, > 0 if a is greater than b
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*/
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int uc_tscmp(const struct timespec *a, const struct timespec *b);
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static inline uint64_t uc_tv2msec(const struct timeval *t)
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{
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return t->tv_sec * 1000 + t->tv_usec / 1000;
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}
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static inline uint64_t uc_ts2msec(const struct timespec *t)
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{
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return t->tv_sec * 1000 + t->tv_nsec / 10000000;
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}
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static inline uint64_t uc_ts2nsec(const struct timespec *t)
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{
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return t->tv_sec * 1000000000ULL + t->tv_nsec;
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}
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/** Convert number of miliseconds to a timeval.
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*
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* @param dst where to store the result
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* @param ms number of miliseconds
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* @return dst
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*/
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struct timeval *uc_ms2tv(struct timeval *dst, uint64_t ms);
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#endif
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