вспомогательные процедуры для времени, хранящегося в виде структуры timeval (helper routines for time stored as a struct timeval)
Имя (Name)
pmtimevalNow, pmtimevalInc, pmtimevalDec, pmtimevalAdd,
pmtimevalSub, pmtimevalToReal, pmtimevalFromReal, pmPrintStamp,
pmPrintHighResStamp - helper routines for time stored as a struct
timeval
Синопсис C (C Synopsis)
#include <pcp/pmapi.h>
void pmtimevalNow(struct timeval *tv);
void pmtimevalInc(struct timeval *ap, const struct timeval *bp);
void pmtimevalDec(struct timeval *ap, const struct timeval *bp);
double pmtimevalAdd(const struct timeval *ap, const struct
timeval *bp);
double pmtimevalSub(const struct timeval *ap, const struct
timeval *bp);
double pmtimevalToReal(const struct timeval *val);
void pmtimevalFromReal(double secs, struct timeval *val);
void pmPrintStamp(FILE *f, const struct timeval *tp);
void pmPrintHighResStamp(FILE *f, const struct timespec *tp);
cc ... -lpcp
Описание (Description)
pmtimevalNow is a platform-independent method that returns the
current system time since the Epoch in tv.
pmtimevalInc adds the time in ap to the time in bp and stores the
result in ap. Similarly pmtimevalDec subtracts the time in bp
from the time in ap and stores the result in ap.
pmtimevalAdd (and pmtimevalSub) add (and subtract) times and
return the result as a double value. The time in the ap argument
is not changed.
pmtimevalToReal converts the time in tp to an equivalent double
value. pmtimevalFromReal provides the reverse conversion, taking
the time in secs and returning the equivalent time in val.
pmPrintStamp prints the timestamp from tp on the stream f in the
local time (as returned by pmLocaltime(3)) in the format
HH:MM:SS.XXX. pmPrintHighResStamp performs a similar service,
but for a struct timespec and reports the timestamp to nanosecond
precision.
Смотри также (See also)
gettimeofday(2), time(2), PMAPI(3) and pmLocaltime(3).
