Package oshi.jna.platform.linux

Interface LinuxLibc

All Superinterfaces:

CLibrary, com.sun.jna.platform.linux.LibC, com.sun.jna.platform.unix.LibCAPI, com.sun.jna.Library, com.sun.jna.platform.unix.Reboot, com.sun.jna.platform.unix.Resource

public interface LinuxLibc
extends com.sun.jna.platform.linux.LibC, CLibrary

Linux C Library. This class should be considered non-API as it may be removed if/when its code is incorporated into the JNA project.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	LinuxLibc.Exit_status	Part of utmpx structure
static class	LinuxLibc.LinuxUtmpx	Return type for getutxent()
static class	LinuxLibc.Ut_Tv	32-bit timeval required for utmpx structure

Nested classes/interfaces inherited from interface oshi.jna.platform.unix.CLibrary

CLibrary.Addrinfo, CLibrary.BsdIp6stat, CLibrary.BsdIpstat, CLibrary.BsdTcpstat, CLibrary.BsdUdpstat, CLibrary.Sockaddr

Nested classes/interfaces inherited from interface com.sun.jna.platform.linux.LibC

com.sun.jna.platform.linux.LibC.Statvfs, com.sun.jna.platform.linux.LibC.Sysinfo

Nested classes/interfaces inherited from interface com.sun.jna.platform.unix.LibCAPI

com.sun.jna.platform.unix.LibCAPI.size_t, com.sun.jna.platform.unix.LibCAPI.ssize_t

Nested classes/interfaces inherited from interface com.sun.jna.Library

com.sun.jna.Library.Handler

Nested classes/interfaces inherited from interface com.sun.jna.platform.unix.Resource

com.sun.jna.platform.unix.Resource.Rlimit

Field Summary

Fields

Modifier and Type	Field	Description
static final LinuxLibc	INSTANCE
static final com.sun.jna.NativeLong	SYS_GETTID	SYS_gettid Defined in one of: arch/arm64/include/asm/unistd32.h, 224 arch/x86/include/uapi/asm/unistd_32.h, 224 arch/x86/include/uapi/asm/unistd_64.h, 186 include/uapi/asm-generic/unistd.h, 178

Fields inherited from interface oshi.jna.platform.unix.CLibrary

AI_CANONNAME, LOGIN_PROCESS, USER_PROCESS, UT_HOSTSIZE, UT_LINESIZE, UT_NAMESIZE

Fields inherited from interface com.sun.jna.platform.linux.LibC

NAME

Fields inherited from interface com.sun.jna.platform.unix.LibCAPI

HOST_NAME_MAX

Fields inherited from interface 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

Fields inherited from interface com.sun.jna.platform.unix.Reboot

RB_AUTOBOOT, RB_DISABLE_CAD, RB_ENABLE_CAD, RB_HALT_SYSTEM, RB_KEXEC, RB_POWER_OFF, RB_SW_SUSPEND

Fields inherited from interface com.sun.jna.platform.unix.Resource

RLIMIT_AS, RLIMIT_CORE, RLIMIT_CPU, RLIMIT_DATA, RLIMIT_FSIZE, RLIMIT_LOCKS, RLIMIT_MEMLOCK, RLIMIT_MSGQUEUE, RLIMIT_NICE, RLIMIT_NLIMITS, RLIMIT_NOFILE, RLIMIT_NPROC, RLIMIT_RSS, RLIMIT_RTPRIO, RLIMIT_RTTIME, RLIMIT_SIGPENDING, RLIMIT_STACK

Method Summary

Modifier and Type	Method	Description
int	gettid()	Returns the caller's thread ID (TID).
LinuxLibc.LinuxUtmpx	getutxent()	Reads a line from the current file position in the utmp file.
com.sun.jna.NativeLong	syscall(com.sun.jna.NativeLong number, Object... args)	syscall() performs the system call whose assembly language interface has the specified number with the specified arguments.

Methods inherited from interface oshi.jna.platform.unix.CLibrary

endutxent, freeaddrinfo, gai_strerror, getaddrinfo, getpid, open, pread, setutxent, sysctl, sysctlbyname, sysctlnametomib

Methods inherited from interface com.sun.jna.platform.linux.LibC

statvfs, sysinfo

Methods inherited from interface com.sun.jna.platform.unix.LibCAPI

close, getdomainname, getegid, getenv, geteuid, getgid, gethostname, getloadavg, getuid, msync, munmap, setdomainname, setegid, setenv, seteuid, setgid, sethostname, setuid, unsetenv

Methods inherited from interface com.sun.jna.platform.unix.Reboot

reboot

Methods inherited from interface com.sun.jna.platform.unix.Resource

getrlimit, setrlimit

Field Details

INSTANCE

static final LinuxLibc INSTANCE

SYS_GETTID

static final com.sun.jna.NativeLong SYS_GETTID

SYS_gettid Defined in one of: arch/arm64/include/asm/unistd32.h, 224 arch/x86/include/uapi/asm/unistd_32.h, 224 arch/x86/include/uapi/asm/unistd_64.h, 186 include/uapi/asm-generic/unistd.h, 178

Method Details

getutxent

LinuxLibc.LinuxUtmpx getutxent()

Reads a line from the current file position in the utmp file. It returns a pointer to a structure containing the fields of the line.

Not thread safe

Returns:

a LinuxLibc.LinuxUtmpx on success, and NULL on failure (which includes the "record not found" case)

gettid

int gettid()

Returns the caller's thread ID (TID). In a single-threaded process, the thread ID is equal to the process ID. In a multithreaded process, all threads have the same PID, but each one has a unique TID.

Returns:

the thread ID of the calling thread.

syscall

com.sun.jna.NativeLong syscall(com.sun.jna.NativeLong number,
 Object... args)

syscall() performs the system call whose assembly language interface has the specified number with the specified arguments.

Parameters:

number - sys call number

args - sys call arguments

Returns:

The return value is defined by the system call being invoked. In general, a 0 return value indicates success. A -1 return value indicates an error, and an error code is stored in errno.