lseos-lib » libc » sysinterf

time.h File Reference

Go to the source code of this file.

Data Structures

struct  timeval
struct  timespec
struct  timezone
struct  itimerval
struct  clockinfo

Defines

#define TIMEVAL_TO_TIMESPEC(tv, ts)
#define TIMESPEC_TO_TIMEVAL(tv, ts)
#define timerclear(tvp)   (tvp)->tv_sec = (tvp)->tv_usec = 0
#define timerisset(tvp)   ((tvp)->tv_sec || (tvp)->tv_usec)
#define timercmp(tvp, uvp, cmp)
#define timeradd(tvp, uvp, vvp)
#define timersub(tvp, uvp, vvp)
#define timespecclear(tsp)   (tsp)->tv_sec = (tsp)->tv_nsec = 0
#define timespecisset(tsp)   ((tsp)->tv_sec || (tsp)->tv_nsec)
#define timespeccmp(tsp, usp, cmp)
#define timespecadd(tsp, usp, vsp)
#define timespecsub(tsp, usp, vsp)
#define ITIMER_REAL   0
#define ITIMER_VIRTUAL   1
#define ITIMER_PROF   2
#define CLOCK_REALTIME   0
#define CLOCK_VIRTUAL   1
#define CLOCK_PROF   2
#define CLOCK_MONOTONIC   3
#define TIMER_RELTIME   0x0
#define TIMER_ABSTIME   0x1

Define Documentation

#define CLOCK_MONOTONIC   3
 

#define CLOCK_PROF   2
 

#define CLOCK_REALTIME   0
 

#define CLOCK_VIRTUAL   1
 

#define ITIMER_PROF   2
 

#define ITIMER_REAL   0
 

#define ITIMER_VIRTUAL   1
 

#define TIMER_ABSTIME   0x1
 

#define TIMER_RELTIME   0x0
 

#define timeradd (  tvp,
uvp,
vvp   ) 
 

Value:

do {                                                            \
                (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec;          \
                (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec;       \
                if ((vvp)->tv_usec >= 1000000) {                        \
                        (vvp)->tv_sec++;                                \
                        (vvp)->tv_usec -= 1000000;                      \
                }                                                       \
        } while (/* CONSTCOND */ 0)

#define timerclear (  tvp   )     (tvp)->tv_sec = (tvp)->tv_usec = 0
 

#define timercmp (  tvp,
uvp,
cmp   ) 
 

Value:

(((tvp)->tv_sec == (uvp)->tv_sec) ?                             \
            ((tvp)->tv_usec cmp (uvp)->tv_usec) :                       \
            ((tvp)->tv_sec cmp (uvp)->tv_sec))

#define timerisset (  tvp   )     ((tvp)->tv_sec || (tvp)->tv_usec)
 

#define timersub (  tvp,
uvp,
vvp   ) 
 

Value:

do {                                                            \
                (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec;          \
                (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec;       \
                if ((vvp)->tv_usec < 0) {                               \
                        (vvp)->tv_sec--;                                \
                        (vvp)->tv_usec += 1000000;                      \
                }                                                       \
        } while (/* CONSTCOND */ 0)

#define TIMESPEC_TO_TIMEVAL (  tv,
ts   ) 
 

Value:

{                                       \
        (tv)->tv_sec = (ts)->tv_sec;                                    \
        (tv)->tv_usec = (ts)->tv_nsec / 1000;                           \
}

#define timespecadd (  tsp,
usp,
vsp   ) 
 

Value:

do {                                                            \
                (vsp)->tv_sec = (tsp)->tv_sec + (usp)->tv_sec;          \
                (vsp)->tv_nsec = (tsp)->tv_nsec + (usp)->tv_nsec;       \
                if ((vsp)->tv_nsec >= 1000000000L) {                    \
                        (vsp)->tv_sec++;                                \
                        (vsp)->tv_nsec -= 1000000000L;                  \
                }                                                       \
        } while (/* CONSTCOND */ 0)

#define timespecclear (  tsp   )     (tsp)->tv_sec = (tsp)->tv_nsec = 0
 

#define timespeccmp (  tsp,
usp,
cmp   ) 
 

Value:

(((tsp)->tv_sec == (usp)->tv_sec) ?                             \
            ((tsp)->tv_nsec cmp (usp)->tv_nsec) :                       \
            ((tsp)->tv_sec cmp (usp)->tv_sec))

#define timespecisset (  tsp   )     ((tsp)->tv_sec || (tsp)->tv_nsec)
 

#define timespecsub (  tsp,
usp,
vsp   ) 
 

Value:

do {                                                            \
                (vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec;          \
                (vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec;       \
                if ((vsp)->tv_nsec < 0) {                               \
                        (vsp)->tv_sec--;                                \
                        (vsp)->tv_nsec += 1000000000L;                  \
                }                                                       \
        } while (/* CONSTCOND */ 0)

#define TIMEVAL_TO_TIMESPEC (  tv,
ts   ) 
 

Value:

{                                       \
        (ts)->tv_sec = (tv)->tv_sec;                                    \
        (ts)->tv_nsec = (tv)->tv_usec * 1000;                           \
}

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