SystemResourcesUtil

java.lang.Object

org.palladiosimulator.protocom.resourcestrategies.system.SystemResourcesUtil

public final class SystemResourcesUtil extends Object

Helper class for monitoring system resources.

Field Summary

Fields

Modifier and Type

Field

Description

static final File

TEMP_DIR

This systems' temp directory.
Constructor Summary

Constructors

Constructor

Description

SystemResourcesUtil()
Method Summary

Modifier and Type

Method

Description

static int

getCPUCores()

Returns the number of CPU cores.

static org.jscience.physics.amount.Amount<javax.measure.quantity.Duration>

getCPUProcessTime()

Returns the CPU time used by this JVM

static double

getCPUProcessTimeNS()

Returns the CPU time used by this JVM

static long

getFreePhysicalMemorySize()

Returns the free physical memory in bytes.

static long

getFreeTempDirectorySize()

Returns the free space of the temp directory

static long

getTotalPhysicalMemorySize()

Returns the total size of the physical memory in bytes.

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

Field Details
- TEMP_DIR
  
  public static final File TEMP_DIR
  
  This systems' temp directory. Due to inconsistencies between different systems a file separator is added.
Constructor Details
- SystemResourcesUtil
  
  public SystemResourcesUtil()
Method Details
- getTotalPhysicalMemorySize
  
  public static long getTotalPhysicalMemorySize()
  
  Returns the total size of the physical memory in bytes.
  
  Returns:
  
  total memory in bytes
- getFreePhysicalMemorySize
  
  public static long getFreePhysicalMemorySize()
  
  Returns the free physical memory in bytes.
  
  Returns:
  
  free memory in bytes
- getFreeTempDirectorySize
  
  public static long getFreeTempDirectorySize()
  
  Returns the free space of the temp directory
  
  Returns:
  
  free space in bytes
- getCPUCores
  
  public static int getCPUCores()
  
  Returns the number of CPU cores.
  
  Returns:
  
  CPU cores
- getCPUProcessTimeNS
  
  public static double getCPUProcessTimeNS()
  
  Returns the CPU time used by this JVM
  
  Returns:
  
  CPU usage in nanoseconds
- getCPUProcessTime
  
  public static org.jscience.physics.amount.Amount<javax.measure.quantity.Duration> getCPUProcessTime()
  
  Returns the CPU time used by this JVM
  
  Returns:
  
  CPU usage as a JScience object