Module org.elasticsearch.nativeaccess

Package org.elasticsearch.nativeaccess.lib

Interface PosixCLibrary

All Superinterfaces:

NativeLibrary

public non-sealed interface PosixCLibrary
extends NativeLibrary

Provides access to methods in libc.so available on POSIX systems.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	PosixCLibrary.RLimit	corresponds to struct rlimit

Method Summary

Modifier and Type	Method	Description
int	errno()	Return the error number from the last failed C library call.
int	geteuid()	Gets the effective userid of the current process.
int	getrlimit(int resource, PosixCLibrary.RLimit rlimit)	Retrieve the current rlimit values for the given resource.
int	mlockall(int flags)	Lock all the current process's virtual address space into RAM.
PosixCLibrary.RLimit	newRLimit()	Create a new RLimit struct for use by getrlimit.
String	strerror(int errno)	Return a string description for an error.

Method Details

geteuid

int geteuid()

Gets the effective userid of the current process.

Returns:

the effective user id

See Also:

• geteuid manpage

newRLimit

PosixCLibrary.RLimit newRLimit()

Create a new RLimit struct for use by getrlimit.

getrlimit

int getrlimit(int resource,
 PosixCLibrary.RLimit rlimit)

Retrieve the current rlimit values for the given resource.

Returns:

0 on success, -1 on failure with errno set

See Also:

• getrlimit manpage

mlockall

int mlockall(int flags)

Lock all the current process's virtual address space into RAM.

Parameters:

flags - flags determining how memory will be locked

Returns:

0 on success, -1 on failure with errno set

See Also:

• mlockall manpage

strerror

String strerror(int errno)

Return a string description for an error.

Parameters:

errno - The error number

Returns:

a String description for the error

See Also:

• strerror manpage

errno

int errno()

Return the error number from the last failed C library call.

See Also:

• errno manpage