com.oracle.svm.core.posix.headers

Class Uio

java.lang.Object

com.oracle.svm.core.posix.headers.Uio

public class Uio
extends Object

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

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Uio.iovec Structure for scatter/gather I/O.

Constructor Summary

Constructors

Constructor and Description
Uio()

Method Summary

Modifier and Type	Method and Description
static org.graalvm.word.SignedWord	preadv(int fd, Uio.iovec iovec, int count, long offset) Read data from file descriptor FD at the given position OFFSET without change the file pointer, and put the result in the buffers described by IOVEC, which is a vector of COUNT 'struct iovec's.
static org.graalvm.word.SignedWord	process_vm_readv(int pid, Uio.iovec lvec, org.graalvm.word.UnsignedWord liovcnt, Uio.iovec rvec, org.graalvm.word.UnsignedWord riovcnt, org.graalvm.word.UnsignedWord flags) Read from another process' address space.
static org.graalvm.word.SignedWord	process_vm_writev(int pid, Uio.iovec lvec, org.graalvm.word.UnsignedWord liovcnt, Uio.iovec rvec, org.graalvm.word.UnsignedWord riovcnt, org.graalvm.word.UnsignedWord flags) Write to another process' address space.
static org.graalvm.word.SignedWord	pwritev(int fd, Uio.iovec iovec, int count, long offset) Write data pointed by the buffers described by IOVEC, which is a vector of COUNT 'struct iovec's, to file descriptor FD at the given position OFFSET without change the file pointer.
static org.graalvm.word.SignedWord	readv(int fd, Uio.iovec iovec, int count) Read data from file descriptor FD, and put the result in the buffers described by IOVEC, which is a vector of COUNT 'struct iovec's.
static int	UIO_MAXIOV() Size of object which can be written atomically.
static org.graalvm.word.SignedWord	writev(int fd, Uio.iovec iovec, int count) Write data pointed by the buffers described by IOVEC, which is a vector of COUNT 'struct iovec's, to file descriptor FD.

Methods inherited from class java.lang.Object

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

Constructor Detail

Uio

public Uio()

Method Detail

UIO_MAXIOV

public static int UIO_MAXIOV()

Size of object which can be written atomically.

process_vm_readv

public static org.graalvm.word.SignedWord process_vm_readv(int pid,
                                                           Uio.iovec lvec,
                                                           org.graalvm.word.UnsignedWord liovcnt,
                                                           Uio.iovec rvec,
                                                           org.graalvm.word.UnsignedWord riovcnt,
                                                           org.graalvm.word.UnsignedWord flags)

Read from another process' address space.

process_vm_writev

public static org.graalvm.word.SignedWord process_vm_writev(int pid,
                                                            Uio.iovec lvec,
                                                            org.graalvm.word.UnsignedWord liovcnt,
                                                            Uio.iovec rvec,
                                                            org.graalvm.word.UnsignedWord riovcnt,
                                                            org.graalvm.word.UnsignedWord flags)

Write to another process' address space.

readv

public static org.graalvm.word.SignedWord readv(int fd,
                                                Uio.iovec iovec,
                                                int count)

Read data from file descriptor FD, and put the result in the buffers described by IOVEC, which is a vector of COUNT 'struct iovec's. The buffers are filled in the order specified. Operates just like 'read' (see ) except that data are put in IOVEC instead of a contiguous buffer. This function is a cancellation point and therefore not marked with THROW.

writev

public static org.graalvm.word.SignedWord writev(int fd,
                                                 Uio.iovec iovec,
                                                 int count)

Write data pointed by the buffers described by IOVEC, which is a vector of COUNT 'struct iovec's, to file descriptor FD. The data is written in the order specified. Operates just like 'write' (see ) except that the data are taken from IOVEC instead of a contiguous buffer. This function is a cancellation point and therefore not marked with THROW.

preadv

public static org.graalvm.word.SignedWord preadv(int fd,
                                                 Uio.iovec iovec,
                                                 int count,
                                                 long offset)

Read data from file descriptor FD at the given position OFFSET without change the file pointer, and put the result in the buffers described by IOVEC, which is a vector of COUNT 'struct iovec's. The buffers are filled in the order specified. Operates just like 'pread' (see ) except that data are put in IOVEC instead of a contiguous buffer.

pwritev

public static org.graalvm.word.SignedWord pwritev(int fd,
                                                  Uio.iovec iovec,
                                                  int count,
                                                  long offset)

Write data pointed by the buffers described by IOVEC, which is a vector of COUNT 'struct iovec's, to file descriptor FD at the given position OFFSET without change the file pointer. The data is written in the order specified. Operates just like 'pwrite' (see ) except that the data are taken from IOVEC instead of a contiguous buffer.