ResourceMonitoringServiceImpl

java.lang.Object
- com.microej.kf.util.monitoring.ResourceMonitoringServiceImpl

All Implemented Interfaces:

ResourceMonitoringService, FeatureStateListener
```
public class ResourceMonitoringServiceImpl
extends Object
implements ResourceMonitoringService, FeatureStateListener
```
This class represents the implementation for the ResourceMonitoringService.

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static class ResourceMonitoringServiceImpl.MonitoringTask
This class represents the monitoring task ran at regular interval.

Nested Classes
Modifier and Type	Class and Description
`static class`	`ResourceMonitoringServiceImpl.MonitoringTask` This class represents the monitoring task ran at regular interval.

Constructor Summary

Constructors
Constructor and Description
`ResourceMonitoringServiceImpl(Timer timer, long intervalMillis, boolean runGcBeforeCollecting)` Instantiates the resource monitoring service.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`long`	`getFreeMemory()` Returns the free memory.
`long`	`getMaxMemory()` Returns the max memory.
`long`	`getTotalMemory()` Returns the total memory.
`PackedMap<String,Float>`	`getUsedCpuPercentPerModule()` Retrieves the CPU usage for each module from the previous monitoring cycle, expressed as a percentage.
`PackedMap<String,Float>`	`getUsedMemoryPercentPerModule()` Retrieves the RAM usage values expressed as a percentage (a value between 0 and 1.0).
`PackedMap<String,Long>`	`getUsedMemoryPerModule()` Retrieves the current RAM usage for each module.
`void`	`start()` Starts the resource monitoring task by enabling monitoring on each module.
`void`	`stateChanged(Feature app, Feature.State state)` Called when the state of a Feature has changed.
`void`	`stop()` Stops resource monitoring by disabling monitoring on each module.

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

- Constructor Detail
  - ResourceMonitoringServiceImpl
```
public ResourceMonitoringServiceImpl(Timer timer,
                                     long intervalMillis,
                                     boolean runGcBeforeCollecting)
```
    Instantiates the resource monitoring service.
    
    Parameters:
    
    timer - the timer.
    
    intervalMillis - the timer interval read from the kernel properties.
    
    runGcBeforeCollecting - the boolean read from kernel properties to run GC before collecting monitoring data.
- Method Detail
  - getFreeMemory
```
public long getFreeMemory()
```
    Description copied from interface: ResourceMonitoringService
    
    Returns the free memory.
    
    Specified by:
    
    getFreeMemory in interface ResourceMonitoringService
    
    Returns:
    
    the free memory.
  - getMaxMemory
```
public long getMaxMemory()
```
    Description copied from interface: ResourceMonitoringService
    
    Returns the max memory.
    
    Specified by:
    
    getMaxMemory in interface ResourceMonitoringService
    
    Returns:
    
    the max memory.
  - getTotalMemory
```
public long getTotalMemory()
```
    Description copied from interface: ResourceMonitoringService
    
    Returns the total memory.
    
    Specified by:
    
    getTotalMemory in interface ResourceMonitoringService
    
    Returns:
    
    the total memory.
  - getUsedCpuPercentPerModule
```
public PackedMap<String,Float> getUsedCpuPercentPerModule()
```
    Description copied from interface: ResourceMonitoringService
    
    Retrieves the CPU usage for each module from the previous monitoring cycle, expressed as a percentage.
    
    Specified by:
    
    getUsedCpuPercentPerModule in interface ResourceMonitoringService
    
    Returns:
    
    a map where each entry contains a module name as the key and its CPU usage percentage (0.0 to 1.0) as the value.
  - getUsedMemoryPercentPerModule
```
public PackedMap<String,Float> getUsedMemoryPercentPerModule()
```
    Description copied from interface: ResourceMonitoringService
    
    Retrieves the RAM usage values expressed as a percentage (a value between 0 and 1.0).
    The percentage indicates the ratio between a module's current heap consumption and the total heap.
    
    Specified by:
    
    getUsedMemoryPercentPerModule in interface ResourceMonitoringService
    
    Returns:
    
    a map where each entry contains the module name as the key and its current RAM usage percentage as the value.
  - getUsedMemoryPerModule
```
public PackedMap<String,Long> getUsedMemoryPerModule()
```
    Description copied from interface: ResourceMonitoringService
    
    Retrieves the current RAM usage for each module.
    
    Specified by:
    
    getUsedMemoryPerModule in interface ResourceMonitoringService
    
    Returns:
    
    a map where each entry contains a module identifier as the key and its current RAM usage in bytes as the value.
  - start
```
public void start()
```
    Starts the resource monitoring task by enabling monitoring on each module.
  - stateChanged
```
public void stateChanged(Feature app,
                         @Nullable
                         Feature.State state)
```
    Description copied from interface: FeatureStateListener
    
    Called when the state of a Feature has changed.
    
    Specified by:
    
    stateChanged in interface FeatureStateListener
    
    Parameters:
    
    app - the Feature which state has changed
    
    state - the previous state, null if Feature state is Feature.State.INSTALLED
  - stop
```
public void stop()
```
    Stops resource monitoring by disabling monitoring on each module.

Class ResourceMonitoringServiceImpl

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ResourceMonitoringServiceImpl

Method Detail

getFreeMemory

getMaxMemory

getTotalMemory

getUsedCpuPercentPerModule

getUsedMemoryPercentPerModule

getUsedMemoryPerModule

start

stateChanged

stop