oshi.software.os.linux

Class LinuxOperatingSystem

java.lang.Object

oshi.software.common.AbstractOperatingSystem

oshi.software.os.linux.LinuxOperatingSystem

All Implemented Interfaces:

OperatingSystem

public class LinuxOperatingSystem
extends AbstractOperatingSystem

LinuxOperatingSystem class.

Nested Class Summary

Nested classes/interfaces inherited from class oshi.software.common.AbstractOperatingSystem

AbstractOperatingSystem.FamilyVersionInfo

Nested classes/interfaces inherited from interface oshi.software.os.OperatingSystem

OperatingSystem.OSVersionInfo, OperatingSystem.ProcessSort

Field Summary

Fields inherited from class oshi.software.common.AbstractOperatingSystem

jvmBitness, version

Constructor Summary

Constructors

Constructor and Description
LinuxOperatingSystem() Constructor for LinuxOperatingSystem.

Method Summary

Modifier and Type	Method and Description
OSProcess[]	getChildProcesses(int parentPid, int limit, OperatingSystem.ProcessSort sort) Gets currently running child processes of provided PID.
FileSystem	getFileSystem() Instantiates a FileSystem object.
static long	getHz() Gets Jiffies per second, useful for converting ticks to milliseconds and vice versa.
NetworkParams	getNetworkParams() Instantiates a NetworkParams object.
OSProcess	getProcess(int pid) Gets information on a currently running process
int	getProcessCount() Get the number of processes currently running
OSProcess[]	getProcesses(int limit, OperatingSystem.ProcessSort sort, boolean slowFields) Gets currently running processes.
int	getProcessId() Gets the current process ID
protected static String	getReleaseFilename() Looks for a collection of possible distrib-release filenames
OSService[]	getServices() Gets the all services on the system.
long	getSystemBootTime() Get Unix time of boot.
long	getSystemUptime() Get the System up time (time since boot).
int	getThreadCount() Get the number of threads currently running
protected int	queryBitness()
protected boolean	queryElevated()
AbstractOperatingSystem.FamilyVersionInfo	queryFamilyVersionInfo()
String	queryManufacturer()

Methods inherited from class oshi.software.common.AbstractOperatingSystem

getBitness, getFamily, getManufacturer, getProcesses, getProcesses, getVersion, getVersionInfo, isElevated, processSort, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

LinuxOperatingSystem

public LinuxOperatingSystem()

Constructor for LinuxOperatingSystem.

Method Detail

queryManufacturer

public String queryManufacturer()

Specified by:

queryManufacturer in class AbstractOperatingSystem

queryFamilyVersionInfo

public AbstractOperatingSystem.FamilyVersionInfo queryFamilyVersionInfo()

Specified by:

queryFamilyVersionInfo in class AbstractOperatingSystem

queryBitness

protected int queryBitness()

Specified by:

queryBitness in class AbstractOperatingSystem

queryElevated

protected boolean queryElevated()

Specified by:

queryElevated in class AbstractOperatingSystem

getFileSystem

public FileSystem getFileSystem()

Description copied from interface: OperatingSystem

Instantiates a FileSystem object.

Returns:

A FileSystem object.

getProcesses

public OSProcess[] getProcesses(int limit,
                                OperatingSystem.ProcessSort sort,
                                boolean slowFields)

Description copied from interface: OperatingSystem

Gets currently running processes. If a positive limit is specified, returns only that number of processes; zero will return all processes. The order may be specified by the sort parameter, for example, to return the top cpu or memory consuming processes; if null, no order is guaranteed.

Parameters:

limit - Max number of results to return, or 0 to return all results

sort - If not null, determines sorting of results

slowFields - If false, skip OSProcess fields that are slow to retrieve (e.g., group information on Windows, open files on Unix and Linux). If true, include all fields, regardless of how long it takes to retrieve the data.

Returns:

An array of OSProcess objects for the specified number (or all) of currently running processes, sorted as specified. The array may contain null elements if a process terminates during iteration.

getProcess

public OSProcess getProcess(int pid)

Description copied from interface: OperatingSystem

Gets information on a currently running process

Parameters:

pid - A process ID

Returns:

An OSProcess object for the specified process id if it is running; null otherwise

getChildProcesses

public OSProcess[] getChildProcesses(int parentPid,
                                     int limit,
                                     OperatingSystem.ProcessSort sort)

Description copied from interface: OperatingSystem

Gets currently running child processes of provided PID. If a positive limit is specified, returns only that number of processes; zero will return all processes. The order may be specified by the sort parameter, for example, to return the top cpu or memory consuming processes; if null, no order is guaranteed.

Parameters:

parentPid - A process ID

limit - Max number of results to return, or 0 to return all results

sort - If not null, determines sorting of results

Returns:

An array of OSProcess objects presenting the specified number (or all) of currently running child processes of the provided PID, sorted as specified. The array may contain null elements if a process terminates during iteration.

getProcessId

public int getProcessId()

Description copied from interface: OperatingSystem

Gets the current process ID

Returns:

the Process ID of the current process

getProcessCount

public int getProcessCount()

Description copied from interface: OperatingSystem

Get the number of processes currently running

Returns:

The number of processes running

getThreadCount

public int getThreadCount()

Description copied from interface: OperatingSystem

Get the number of threads currently running

Returns:

The number of threads running

getSystemUptime

public long getSystemUptime()

Description copied from interface: OperatingSystem

Get the System up time (time since boot).

Returns:

Number of seconds since boot.

getSystemBootTime

public long getSystemBootTime()

Description copied from interface: OperatingSystem

Get Unix time of boot.

Returns:

The approximate time at which the system booted, in seconds since the Unix epoch.

getNetworkParams

public NetworkParams getNetworkParams()

Description copied from interface: OperatingSystem

Instantiates a NetworkParams object.

Returns:

A NetworkParams object.

getReleaseFilename

protected static String getReleaseFilename()

Looks for a collection of possible distrib-release filenames

Returns:

The first valid matching filename

getHz

public static long getHz()

Gets Jiffies per second, useful for converting ticks to milliseconds and vice versa.

Returns:

Jiffies per second.

getServices

public OSService[] getServices()

Description copied from interface: OperatingSystem

Gets the all services on the system. The definition of what is a service is platform-dependent.

Specified by:

getServices in interface OperatingSystem

Overrides:

getServices in class AbstractOperatingSystem

Returns:

An array of OSService objects