edu.stanford.nlp.util

Class MemoryMonitor

java.lang.Object

edu.stanford.nlp.util.MemoryMonitor

public class MemoryMonitor
extends java.lang.Object

Utilities for monitoring memory use, including peak memory use.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MemoryMonitor.PeakMemoryMonitor This class offers a simple way to track the peak memory used by a program.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	freeMem
protected long	lastPoll
static int	MAX_SWAPS
protected long	pollEvery
protected java.lang.Runtime	r
protected int	swaps
protected int	usedSwap

Constructor Summary

Constructors

Constructor and Description
MemoryMonitor()
MemoryMonitor(long millis)

Method Summary

Modifier and Type	Method and Description
int	getMaxAvailableMemory()
int	getMaxAvailableMemory(boolean accurate)
int	getMaxMemory()
int	getSystemFreeMemory(boolean accurate)
double	getSystemSwapsPerSec()
int	getSystemUsedSwap()
int	getUsedMemory()
int	getUsedMemory(boolean accurate)
static int	getUsedMemoryStatic()
static int	getUsedMemoryStatic(java.lang.Runtime r)
static java.lang.String	getUsedMemoryString()
static void	main(java.lang.String[] args)
protected static java.util.ArrayList<java.lang.String>	parseFields(java.io.BufferedReader br, java.lang.String splitStr, int[] lineNums, int[] positions)
void	pollAtMostEvery(long millis)
void	pollFree(boolean force)
void	pollVMstat(boolean force)
boolean	systemIsSwapping()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

MAX_SWAPS

public static final int MAX_SWAPS

See Also:

Constant Field Values

lastPoll

protected long lastPoll

pollEvery

protected long pollEvery

freeMem

protected int freeMem

usedSwap

protected int usedSwap

swaps

protected int swaps

r

protected java.lang.Runtime r

Constructor Detail

MemoryMonitor

public MemoryMonitor()

MemoryMonitor

public MemoryMonitor(long millis)

Method Detail

pollAtMostEvery

public void pollAtMostEvery(long millis)

getMaxMemory

public int getMaxMemory()

getMaxAvailableMemory

public int getMaxAvailableMemory()

getMaxAvailableMemory

public int getMaxAvailableMemory(boolean accurate)

getUsedMemory

public int getUsedMemory()

getUsedMemory

public int getUsedMemory(boolean accurate)

getUsedMemoryStatic

public static int getUsedMemoryStatic()

getUsedMemoryStatic

public static int getUsedMemoryStatic(java.lang.Runtime r)

getUsedMemoryString

public static java.lang.String getUsedMemoryString()

getSystemFreeMemory

public int getSystemFreeMemory(boolean accurate)

getSystemUsedSwap

public int getSystemUsedSwap()

getSystemSwapsPerSec

public double getSystemSwapsPerSec()

parseFields

protected static java.util.ArrayList<java.lang.String> parseFields(java.io.BufferedReader br,
                                                                   java.lang.String splitStr,
                                                                   int[] lineNums,
                                                                   int[] positions)
                                                            throws java.io.IOException

Throws:

java.io.IOException

pollFree

public void pollFree(boolean force)

pollVMstat

public void pollVMstat(boolean force)

systemIsSwapping

public boolean systemIsSwapping()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

main

public static void main(java.lang.String[] args)
                 throws java.lang.InterruptedException

Throws:

java.lang.InterruptedException