net.openhft.posix

Interface PosixAPI

All Known Implementing Classes:

JNAPosixAPI, JNRPosixAPI, NoOpPosixAPI, RawPosixAPI, WinJNRPosixAPI

public interface PosixAPI

Method Summary

Modifier and Type	Method and Description
default long	clock_gettime()
default long	clock_gettime(ClockId clockId)
long	clock_gettime(int clockId)
int	close(int fd)
default long	du(String filename)
int	fallocate(int fd, int mode, long offset, long length)
void	free(long ptr)
int	ftruncate(int fd, long offset)
int	get_nprocs_conf()
int	get_nprocs()
int	getpid()
int	gettid()
default long	gettimeofday() note clock_gettime() is more accurate if available.
int	gettimeofday(long timeval)
int	lastError()
default String	lastErrorStr()
int	lockf(int fd, int cmd, long len)
long	lseek(int fd, long offset, int whence)
default long	lseek(int fd, long offset, WhenceFlag whence)
int	madvise(long addr, long length, int advice)
default int	madvise(long addr, long length, MAdviseFlag advice)
long	malloc(long size)
default boolean	mlock(long addr, long length)
default boolean	mlock2(long addr, long length, boolean lockOnFault)
default void	mlockall(int flags)
default void	mlockall(MclFlag flags)
long	mmap(long addr, long length, int prot, int flags, int fd, long offset)
default long	mmap(long addr, long length, MMapProt prot, MMapFlag flags, int fd, long offset)
int	msync(long address, long length, int mode)
default int	msync(long address, long length, MSyncFlag flags)
int	munmap(long addr, long length)
int	open(CharSequence path, int flags, int perm)
default int	open(CharSequence path, OpenFlag flags, int perm)
static PosixAPI	posix()
long	read(int fd, long dst, long len)
default String	sched_getaffinity_summary(int pid)
int	sched_getaffinity(int pid, int cpusetsize, long mask)
default int	sched_setaffinity_as(int pid, int cpu)
default int	sched_setaffinity_range(int pid, int from, int to)
int	sched_setaffinity(int pid, int cpusetsize, long mask)
String	strerror(int errno)
static void	useNoOpPosixApi()
long	write(int fd, long src, long len)

Method Detail

posix

static PosixAPI posix()

Returns:

The fastest available PosixAPI implementation.

useNoOpPosixApi

static void useNoOpPosixApi()

close

int close(int fd)

fallocate

int fallocate(int fd,
              int mode,
              long offset,
              long length)

ftruncate

int ftruncate(int fd,
              long offset)

lseek

default long lseek(int fd,
                   long offset,
                   WhenceFlag whence)

lseek

long lseek(int fd,
           long offset,
           int whence)

lockf

int lockf(int fd,
          int cmd,
          long len)

madvise

default int madvise(long addr,
                    long length,
                    MAdviseFlag advice)

madvise

int madvise(long addr,
            long length,
            int advice)

mmap

default long mmap(long addr,
                  long length,
                  MMapProt prot,
                  MMapFlag flags,
                  int fd,
                  long offset)

mmap

long mmap(long addr,
          long length,
          int prot,
          int flags,
          int fd,
          long offset)

mlock

default boolean mlock(long addr,
                      long length)

Returns:

if there was enough memory or not. Check ulimit -l if this returns false

mlock2

default boolean mlock2(long addr,
                       long length,
                       boolean lockOnFault)

mlockall

default void mlockall(MclFlag flags)

mlockall

default void mlockall(int flags)

msync

default int msync(long address,
                  long length,
                  MSyncFlag flags)

msync

int msync(long address,
          long length,
          int mode)

munmap

int munmap(long addr,
           long length)

open

default int open(CharSequence path,
                 OpenFlag flags,
                 int perm)

open

int open(CharSequence path,
         int flags,
         int perm)

read

long read(int fd,
          long dst,
          long len)

write

long write(int fd,
           long src,
           long len)

du

default long du(String filename)
         throws IOException

Throws:

IOException

gettimeofday

int gettimeofday(long timeval)

sched_setaffinity

int sched_setaffinity(int pid,
                      int cpusetsize,
                      long mask)

sched_getaffinity

int sched_getaffinity(int pid,
                      int cpusetsize,
                      long mask)

sched_getaffinity_summary

default String sched_getaffinity_summary(int pid)

lastError

int lastError()

sched_setaffinity_as

default int sched_setaffinity_as(int pid,
                                 int cpu)

sched_setaffinity_range

default int sched_setaffinity_range(int pid,
                                    int from,
                                    int to)

gettimeofday

default long gettimeofday()

note clock_gettime() is more accurate if available.

Returns:

wall clock in microseconds.

clock_gettime

default long clock_gettime()

Returns:

wall clock in nano-seconds.

clock_gettime

default long clock_gettime(ClockId clockId)
                    throws IllegalArgumentException

Throws:

IllegalArgumentException

clock_gettime

long clock_gettime(int clockId)
            throws IllegalArgumentException

Throws:

IllegalArgumentException

malloc

long malloc(long size)

free

void free(long ptr)

get_nprocs

int get_nprocs()

get_nprocs_conf

int get_nprocs_conf()

getpid

int getpid()

gettid

int gettid()

strerror

String strerror(int errno)

lastErrorStr

default String lastErrorStr()