FileDescriptorRatioGauge

java.lang.Object
- com.codahale.metrics.RatioGauge
- - com.codahale.metrics.jvm.FileDescriptorRatioGauge

All Implemented Interfaces:

Gauge<java.lang.Double>, Metric
```
public class FileDescriptorRatioGauge
extends RatioGauge
```
A gauge for the ratio of used to total file descriptors.

Nested Class Summary
- Nested classes/interfaces inherited from class com.codahale.metrics.RatioGauge
  RatioGauge.Ratio

Field Summary

Fields
Modifier and Type Field Description

private java.lang.management.OperatingSystemMXBean os

Constructor Summary

Constructors
Constructor	Description
`FileDescriptorRatioGauge()`	Creates a new gauge using the platform OS bean.
`FileDescriptorRatioGauge(java.lang.management.OperatingSystemMXBean os)`	Creates a new gauge using the given OS bean.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected RatioGauge.Ratio`	`getRatio()`	Returns the `RatioGauge.Ratio` which is the gauge's current value.
`private long`	`invoke(java.lang.String name)`

Methods inherited from class com.codahale.metrics.RatioGauge
getValue

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - os
```
private final java.lang.management.OperatingSystemMXBean os
```
- Constructor Detail
  - FileDescriptorRatioGauge
```
public FileDescriptorRatioGauge()
```
    Creates a new gauge using the platform OS bean.
  - FileDescriptorRatioGauge
```
public FileDescriptorRatioGauge(java.lang.management.OperatingSystemMXBean os)
```
    Creates a new gauge using the given OS bean.
    
    Parameters:
    
    os - an OperatingSystemMXBean
- Method Detail
  - getRatio
```
protected RatioGauge.Ratio getRatio()
```
    Description copied from class: RatioGauge
    
    Returns the RatioGauge.Ratio which is the gauge's current value.
    
    Specified by:
    
    getRatio in class RatioGauge
    
    Returns:
    
    the RatioGauge.Ratio which is the gauge's current value
  - invoke
```
private long invoke(java.lang.String name)
             throws java.lang.NoSuchMethodException,
                    java.lang.IllegalAccessException,
                    java.lang.reflect.InvocationTargetException
```
    Throws:
    
    java.lang.NoSuchMethodException
    
    java.lang.IllegalAccessException
    
    java.lang.reflect.InvocationTargetException