Package com.sun.jna.platform.linux

Schnittstelle LibRT

Alle Superschnittstellen:

Library

public interface LibRT
extends Library

POSIX.1b Realtime Extensions library (librt). Functions in this library provide most of the interfaces specified by the POSIX.1b Realtime Extension.

Verschachtelte Klassen - Übersicht

Von Schnittstelle geerbte verschachtelte Klassen/Schnittstellen com.sun.jna.Library

Library.Handler

Feldübersicht

Felder

Modifizierer und Typ	Feld	Beschreibung
static final LibRT	INSTANCE

Von Schnittstelle geerbte Felder com.sun.jna.Library

OPTION_ALLOW_OBJECTS, OPTION_CALLING_CONVENTION, OPTION_CLASSLOADER, OPTION_FUNCTION_MAPPER, OPTION_INVOCATION_MAPPER, OPTION_OPEN_FLAGS, OPTION_STRING_ENCODING, OPTION_STRUCTURE_ALIGNMENT, OPTION_SYMBOL_PROVIDER, OPTION_TYPE_MAPPER

Methodenübersicht

Modifizierer und Typ	Methode	Beschreibung
int	shm_open(String name, int oflag, int mode)	Creates and opens a new, or opens an existing, POSIX shared memory object.
int	shm_unlink(String name)	Removes an object previously created by shm_open(java.lang.String, int, int).

Felddetails

INSTANCE

static final LibRT INSTANCE

Methodendetails

shm_open

int shm_open(String name,
 int oflag,
 int mode)

Creates and opens a new, or opens an existing, POSIX shared memory object. A POSIX shared memory object is in effect a handle which can be used by unrelated processes to mmap() the same region of shared memory.

Parameter:

name - The shared memory object to be created or opened. For portable use, a shared memory object should be identified by a name of the form /somename that is, a null-terminated string of up to NAME_MAX (i.e., 255) characters consisting of an initial slash, followed by one or more characters, none of which are slashes.

oflag - A bit mask created by ORing together exactly one of O_RDONLY or O_RDWR and any of the other flags O_CREAT, O_EXCL, or O_TRUNC.

mode - When oflag includes O_CREAT, the object's permission bits are set according to the low-order 9 bits of mode, except that those bits set in the process file mode creation mask (see umask(2)) are cleared for the new object.

Gibt zurück:

On success, returns a file descriptor (a nonnegative integer). On failure, returns -1. On failure, errno is set to indicate the cause of the error.

shm_unlink

int shm_unlink(String name)

Removes an object previously created by shm_open(java.lang.String, int, int).

Parameter:

name - The shared memory object to be unlinked.

Gibt zurück:

returns 0 on success, or -1 on error. On failure, errno is set to indicate the cause of the error.