com.oracle.svm.core.posix.headers

Class Time

java.lang.Object

com.oracle.svm.core.posix.headers.Time

Direct Known Subclasses:

LinuxTime

public class Time
extends Object

Definitions manually translated from the C header file sys/time.h.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Time.itimerval Type of the second argument to `getitimer' and the second and third arguments `setitimer'.
static interface	Time.timespec POSIX.1b structure for a time value.
static interface	Time.timeval A time value that is accurate to the nearest microsecond but also has a range of years.
static interface	Time.timezone Structure crudely representing a timezone.
static interface	Time.tm Used by other time functions.

Constructor Summary

Constructors

Constructor and Description
Time()

Method Summary

Modifier and Type	Method and Description
static int	adjtime(Time.timeval delta, Time.timeval olddelta) Adjust the current time of day by the amount in DELTA.
static org.graalvm.nativeimage.c.type.CCharPointer	asctime_r(Time.tm tp, org.graalvm.nativeimage.c.type.CCharPointer buf) Return in BUF a string of the form "Day Mon dd hh:mm:ss yyyy\n" that is the representation of TP in this format.
static org.graalvm.nativeimage.c.type.CCharPointer	asctime(Time.tm tp) Return a string of the form "Day Mon dd hh:mm:ss yyyy\n" that is the representation of TP in this format.
static long	clock() Time used by the program so far (user time + system time).
static int	CLOCKS_PER_SEC() ISO/IEC 9899:1990 7.12.1: The macro `CLOCKS_PER_SEC' is the number per second of the value returned by the `clock' function.
static org.graalvm.nativeimage.c.type.CCharPointer	ctime_r(org.graalvm.word.PointerBase timer, org.graalvm.nativeimage.c.type.CCharPointer buf) Equivalent to `asctime_r (localtime_r (timer, *TMP*), buf)'.
static org.graalvm.nativeimage.c.type.CCharPointer	ctime(org.graalvm.word.PointerBase timer) Equivalent to `asctime (localtime (timer))'.
static double	difftime(long time1, long time0) Return the difference between TIME1 and TIME0.
static int	futimes(int fd, Time.timeval tvp) Same as `utimes', but takes an open file descriptor instead of a name.
static int	futimesat(int fd, org.graalvm.nativeimage.c.type.CCharPointer file, Time.timeval tvp) Change the access time of FILE relative to FD to TVP[0] and the modification time of FILE to TVP[1].
static int	getitimer(int which, Time.itimerval value) Set *VALUE to the current setting of timer WHICH.
static int	gettimeofday(Time.timeval tv, Time.timezone tz) Get the current time of day and timezone information, putting it into *TV and *TZ.
static Time.tm	gmtime_r(org.graalvm.word.PointerBase timer, Time.tm tp) Return the `struct tm' representation of *TIMER in UTC, using *TP to store the result.
static Time.tm	gmtime(org.graalvm.word.PointerBase timer) Return the `struct tm' representation of *TIMER in Universal Coordinated Time (aka Greenwich Mean Time).
static int	ITIMER_PROF() Timers run when the process is executing and when the system is executing on behalf of the process.
static int	ITIMER_REAL() Timers run in real time.
static int	ITIMER_VIRTUAL() Timers run only when the process is executing.
static Time.tm	localtime_r(org.graalvm.word.PointerBase timer, Time.tm tp) Return the `struct tm' representation of *TIMER in local time, using *TP to store the result.
static Time.tm	localtime(org.graalvm.word.PointerBase timer) Return the `struct tm' representation of *TIMER in the local timezone.
static int	lutimes(org.graalvm.nativeimage.c.type.CCharPointer file, Time.timeval tvp) Same as `utimes', but does not follow symbolic links.
static long	mktime(Time.tm tp) Return the `long' representation of TP and normalize TP.
static int	nanosleep(Time.timespec requested_time, Time.timespec remaining) Pause execution for a number of nanoseconds.
static int	setitimer(int which, Time.itimerval _new, Time.itimerval old) Set the timer WHICH to *NEW.
static int	settimeofday(Time.timeval tv, Time.timezone tz) Set the current time of day and timezone information.
static int	stime(org.graalvm.word.PointerBase when) Set the system time to *WHEN.
static org.graalvm.word.UnsignedWord	strftime(org.graalvm.nativeimage.c.type.CCharPointer s, org.graalvm.word.UnsignedWord maxsize, org.graalvm.nativeimage.c.type.CCharPointer format, Time.tm tp) Format TP into S according to FORMAT.
static org.graalvm.nativeimage.c.type.CCharPointer	strptime(org.graalvm.nativeimage.c.type.CCharPointer s, org.graalvm.nativeimage.c.type.CCharPointer fmt, Time.tm tp) Parse S according to FORMAT and store binary time information in TP.
static long	time(org.graalvm.word.PointerBase timer) Return the current time and put it in *TIMER if TIMER is not NULL.
static int	utimes(org.graalvm.nativeimage.c.type.CCharPointer file, Time.timeval tvp) Change the access time of FILE to TVP[0] and the modification time of FILE to TVP[1].

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Time

public Time()

Method Detail

CLOCKS_PER_SEC

public static int CLOCKS_PER_SEC()

ISO/IEC 9899:1990 7.12.1: The macro `CLOCKS_PER_SEC' is the number per second of the value returned by the `clock' function.

CAE XSH, Issue 4, Version 2: The value of CLOCKS_PER_SEC is required to be 1 million on all XSI-conformant systems.

gettimeofday

public static int gettimeofday(Time.timeval tv,
                               Time.timezone tz)

Get the current time of day and timezone information, putting it into *TV and *TZ. If TZ is NULL, *TZ is not filled. Returns 0 on success, -1 on errors. NOTE: This form of timezone information is obsolete. Use the functions and variables declared in <time.h> instead.

settimeofday

public static int settimeofday(Time.timeval tv,
                               Time.timezone tz)

Set the current time of day and timezone information. This call is restricted to the super-user.

adjtime

public static int adjtime(Time.timeval delta,
                          Time.timeval olddelta)

Adjust the current time of day by the amount in DELTA. If OLDDELTA is not NULL, it is filled in with the amount of time adjustment remaining to be done from the last `adjtime' call. This call is restricted to the super-user.

ITIMER_REAL

public static int ITIMER_REAL()

Timers run in real time.

ITIMER_VIRTUAL

public static int ITIMER_VIRTUAL()

Timers run only when the process is executing.

ITIMER_PROF

public static int ITIMER_PROF()

Timers run when the process is executing and when the system is executing on behalf of the process.

getitimer

public static int getitimer(int which,
                            Time.itimerval value)

Set *VALUE to the current setting of timer WHICH. Return 0 on success, -1 on errors.

setitimer

public static int setitimer(int which,
                            Time.itimerval _new,
                            Time.itimerval old)

Set the timer WHICH to *NEW. If OLD is not NULL, set *OLD to the old value of timer WHICH. Returns 0 on success, -1 on errors.

utimes

public static int utimes(org.graalvm.nativeimage.c.type.CCharPointer file,
                         Time.timeval tvp)

Change the access time of FILE to TVP[0] and the modification time of FILE to TVP[1]. If TVP is a null pointer, use the current time instead. Returns 0 on success, -1 on errors.

lutimes

public static int lutimes(org.graalvm.nativeimage.c.type.CCharPointer file,
                          Time.timeval tvp)

Same as `utimes', but does not follow symbolic links.

futimes

public static int futimes(int fd,
                          Time.timeval tvp)

Same as `utimes', but takes an open file descriptor instead of a name.

futimesat

public static int futimesat(int fd,
                            org.graalvm.nativeimage.c.type.CCharPointer file,
                            Time.timeval tvp)

Change the access time of FILE relative to FD to TVP[0] and the modification time of FILE to TVP[1]. If TVP is a null pointer, use the current time instead. Returns 0 on success, -1 on errors.

clock

public static long clock()

Time used by the program so far (user time + system time). The result / CLOCKS_PER_SECOND is program time in seconds.

time

public static long time(org.graalvm.word.PointerBase timer)

Return the current time and put it in *TIMER if TIMER is not NULL.

difftime

public static double difftime(long time1,
                              long time0)

Return the difference between TIME1 and TIME0.

mktime

public static long mktime(Time.tm tp)

Return the `long' representation of TP and normalize TP.

strftime

public static org.graalvm.word.UnsignedWord strftime(org.graalvm.nativeimage.c.type.CCharPointer s,
                                                     org.graalvm.word.UnsignedWord maxsize,
                                                     org.graalvm.nativeimage.c.type.CCharPointer format,
                                                     Time.tm tp)

Format TP into S according to FORMAT. Write no more than MAXSIZE characters and return the number of characters written, or 0 if it would exceed MAXSIZE.

strptime

public static org.graalvm.nativeimage.c.type.CCharPointer strptime(org.graalvm.nativeimage.c.type.CCharPointer s,
                                                                   org.graalvm.nativeimage.c.type.CCharPointer fmt,
                                                                   Time.tm tp)

Parse S according to FORMAT and store binary time information in TP. The return value is a pointer to the first unparsed character in S.

gmtime

public static Time.tm gmtime(org.graalvm.word.PointerBase timer)

Return the `struct tm' representation of *TIMER in Universal Coordinated Time (aka Greenwich Mean Time).

localtime

public static Time.tm localtime(org.graalvm.word.PointerBase timer)

Return the `struct tm' representation of *TIMER in the local timezone.

gmtime_r

public static Time.tm gmtime_r(org.graalvm.word.PointerBase timer,
                               Time.tm tp)

Return the `struct tm' representation of *TIMER in UTC, using *TP to store the result.

localtime_r

public static Time.tm localtime_r(org.graalvm.word.PointerBase timer,
                                  Time.tm tp)

Return the `struct tm' representation of *TIMER in local time, using *TP to store the result.

asctime

public static org.graalvm.nativeimage.c.type.CCharPointer asctime(Time.tm tp)

Return a string of the form "Day Mon dd hh:mm:ss yyyy\n" that is the representation of TP in this format.

ctime

public static org.graalvm.nativeimage.c.type.CCharPointer ctime(org.graalvm.word.PointerBase timer)

Equivalent to `asctime (localtime (timer))'.

asctime_r

public static org.graalvm.nativeimage.c.type.CCharPointer asctime_r(Time.tm tp,
                                                                    org.graalvm.nativeimage.c.type.CCharPointer buf)

Return in BUF a string of the form "Day Mon dd hh:mm:ss yyyy\n" that is the representation of TP in this format.

ctime_r

public static org.graalvm.nativeimage.c.type.CCharPointer ctime_r(org.graalvm.word.PointerBase timer,
                                                                  org.graalvm.nativeimage.c.type.CCharPointer buf)

Equivalent to `asctime_r (localtime_r (timer, *TMP*), buf)'.

stime

public static int stime(org.graalvm.word.PointerBase when)

Set the system time to *WHEN. This call is restricted to the superuser.

nanosleep

public static int nanosleep(Time.timespec requested_time,
                            Time.timespec remaining)

Pause execution for a number of nanoseconds.