oshi.software.os

Interface OperatingSystem

All Superinterfaces:

Serializable

All Known Implementing Classes:

AbstractOperatingSystem, FreeBsdOperatingSystem, LinuxOperatingSystem, MacOperatingSystem, SolarisOperatingSystem, WindowsOperatingSystem

public interface OperatingSystem
extends Serializable

An operating system (OS) is the software on a computer that manages the way different programs use its hardware, and regulates the ways that a user controls the computer.

Author:

dblock[at]dblock[dot]org

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	OperatingSystem.ProcessSort Controls sorting of Process output

Method Summary

Modifier and Type	Method and Description
int	getBitness() Gets the bitness (32 or 64) of the operating system.
OSProcess[]	getChildProcesses(int parentPid, int limit, OperatingSystem.ProcessSort sort) Gets currently running child processes of provided PID.
String	getFamily() Operating system family.
FileSystem	getFileSystem() Instantiates a FileSystem object.
String	getManufacturer() Manufacturer.
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
List<OSProcess>	getProcesses(Collection<Integer> pids) Gets information on a currently running processes.
OSProcess[]	getProcesses(int limit, OperatingSystem.ProcessSort sort) Gets currently running processes.
OSProcess[]	getProcesses(int limit, OperatingSystem.ProcessSort sort, boolean slowFields) Gets currently running processes.
int	getProcessId() Gets the current process ID
int	getThreadCount() Get the number of threads currently running
OperatingSystemVersion	getVersion() Operating system version.

Method Detail

getFamily

String getFamily()

Operating system family.

Returns:

String.

getManufacturer

String getManufacturer()

Manufacturer.

Returns:

String.

getVersion

OperatingSystemVersion getVersion()

Operating system version.

Returns:

Version.

getFileSystem

FileSystem getFileSystem()

Instantiates a FileSystem object.

Returns:

A FileSystem object.

getProcesses

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

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

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. Some fields that are slow to retrieve (e.g., group information on Windows, open files on Unix and Linux) will be skipped.

getProcesses

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

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

OSProcess getProcess(int pid)

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

getProcesses

List<OSProcess> getProcesses(Collection<Integer> pids)

Gets information on a currently running processes. This has improved performance on Windows based operating systems vs. iterating individual processes.

Parameters:

pids - A collection of process IDs

Returns:

An OSProcess object for the specified process ids if it is running

getChildProcesses

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

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

int getProcessId()

Gets the current process ID

Returns:

the Process ID of the current process

getProcessCount

int getProcessCount()

Get the number of processes currently running

Returns:

The number of processes running

getThreadCount

int getThreadCount()

Get the number of threads currently running

Returns:

The number of threads running

getBitness

int getBitness()

Gets the bitness (32 or 64) of the operating system.

Returns:

The number of bits supported by the operating system.

getNetworkParams

NetworkParams getNetworkParams()

Instantiates a NetworkParams object.

Returns:

A NetworkParams object.