Class ProcessCpuUsage

Definition

Namespace:

Tizen.System

Assembly:

Tizen.System.Information.dll

The class for CPU usage per given list of process.

public class ProcessCpuUsage

Inheritance

object

ProcessCpuUsage

Constructors

ProcessCpuUsage(IEnumerable<int>)

The constructor of ProcessCpuUsage class of the given list of process. It internally call Update() on constructing an instance.

Declaration

public ProcessCpuUsage(IEnumerable<int> pid)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<T><int>	pid	List of unique process ids.

Exceptions

Type	Condition
System.ArgumentException	Thrown when the pid is empty.
System.IO.IOException	Thrown when an I/O error occurs while reading from the system or requesting to the resource management daemon.
System.OutOfMemoryException	Thrown when the memory is not enough to allocate.
System.UnauthorizedAccessException	Thrown when the caller does not have privilege to use this method.

Properties

Count

The number of processes being tracked by the instance.

Declaration

public int Count { get; }

Property Value

Type	Description
int

Methods

GetSTime(int)

Gets the amount of time this process has been scheduled in kernel mode. To get the latest value, it is recommended to call Update() before it.

Declaration

public uint GetSTime(int pid)

Parameters

Type	Name	Description
int	pid	The process id.

Returns

Type	Description
uint	The amount of time pid has been scheduled in kernel mode (clock ticks).

Exceptions

Type	Condition
System.ArgumentException	Thrown when the pid is invalid.

GetUTime(int)

Gets the amount of time this process has been scheduled in user mode. To get the latest value, it is recommended to call Update() before it.

Declaration

public uint GetUTime(int pid)

Parameters

Type	Name	Description
int	pid	The process id.

Returns

Type	Description
uint	The amount of time pid has been scheduled in user mode (clock ticks).

Exceptions

Type	Condition
System.ArgumentException	Thrown when the pid is invalid.

Update(IEnumerable<int>)

Update CPU usage of the given processes to the latest.

Declaration

public void Update(IEnumerable<int> pid)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<T><int>	pid	List of unique process ids.

Exceptions

Type	Condition
System.ArgumentException	Thrown when the pid is empty.
System.IO.IOException	Thrown when an I/O error occurs while reading from the system or requesting to the resource management daemon.
System.OutOfMemoryException	Thrown when the memory is not enough to allocate.
System.UnauthorizedAccessException	Thrown when the caller does not have privilege to use this method.