e4s.util
Class E4MemoryWatchdog

java.lang.Object
  e4s.util.E4Object
      e4s.util.E4MemoryWatchdog

All Implemented Interfaces:

java.lang.Runnable

public class E4MemoryWatchdog
extends E4Object
implements java.lang.Runnable

The Memory-Watchdog will be check in a certain intervall, if enought memory is free. Registered objects can be added using the AEP interface, and if free memory is below a specified trashold, then the registered object is kindly advised to give memory free.

Nested Class Summary

static interface

E4MemoryWatchdog.AEP_MemoryFree

Field Summary

Fields inherited from class e4s.util.E4Object

CRLF, E4S_CORE_SYSTEM_LANGUAGE, NBSP, NULLSTR, URL_ENCODING_CHARSET

Method Summary

static java.lang.String	_getSVNVersionString() Get version info string from subversion.
void	finalize()
static float	freeMemoryPercentage() Get free memory.
static java.lang.String	getHeapMemoryInfoString()
static java.lang.String	getHeapMemoryInfoString(E4DecimalSign ds)
static java.lang.String	getMemoryInfoString()
static java.lang.String	getMemoryInfoString(E4DecimalSign ds)
static java.lang.String	getPermGenMemoryInfoString()
static java.lang.String	getPermGenMemoryInfoString(E4DecimalSign ds)
static java.lang.management.MemoryPoolMXBean	getPermGenSpaceMXBean()
E4MemoryWatchdog.AEP_MemoryFree[]	getRegisteredInterfaces()
static void	init()
static void	log(java.lang.String txt)
static void	register(E4MemoryWatchdog.AEP_MemoryFree free)
static void	register(java.util.Hashtable hash, float trashhold)
static void	register(java.util.Vector vec, float trashhold)
void	run()
void	stop()
static void	stopAll()
void	unregister(E4MemoryWatchdog.AEP_MemoryFree free)

Methods inherited from class e4s.util.E4Object

Calendar, CName, CName, E4LabelApp, E4LabelApp, E4LabelApp, E4LabelApp, E4LabelApp, E4LabelApp, E4LabelNone, E4LabelNone, E4LabelNone, E4LabelNone, E4LabelSys, E4LabelSys, e4sCopyright, e4sVersion, encode, encode, encode, encodeHtml, encodeHtml, encodeHtml, encodeURL, encodeURL, encodeURL, getLINE, getTRACE, getTRACE, getTRACE, getTRACE, getTRACE, getTRACE, getTraceMemory, HtmlEncode, HtmlEncode, HtmlEncode, isdecimal, isdigit, isnotok, isnotok, isnumeric, isok, isok, isok, isok, lastCallingFunction, lastCallingFunction, lastCallingFunction, lastCallingFunction, lastCallingStack, mkdirs, null2nbsp, null2nbsp, null2nbsp, ok, ok, ok, ok, outPrintln, setLogFile4Trace, setTraceMemory, STACKTRACE, toDebug, toDouble, toFloat, toFloat, toString, TRACE_CALLS, TRACE, TRACE, TRACE, TRACE, TRACE, TRACE, TRACE, TRACE, TRACE, TRACE, TRACE, TRACE, wait

Methods inherited from class java.lang.Object

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

Method Detail

run

public void run()

Specified by:

run in interface java.lang.Runnable

log

public static void log(java.lang.String txt)

init

public static void init()

finalize

public void finalize()

Overrides:

finalize in class E4Object

freeMemoryPercentage

public static float freeMemoryPercentage()

Get free memory.

Returns:

a value between 0.0f (no memory is free) and 1.0f (all memory is free).

getRegisteredInterfaces

public E4MemoryWatchdog.AEP_MemoryFree[] getRegisteredInterfaces()

unregister

public void unregister(E4MemoryWatchdog.AEP_MemoryFree free)

register

public static void register(java.util.Hashtable hash,
                            float trashhold)

register

public static void register(java.util.Vector vec,
                            float trashhold)

register

public static void register(E4MemoryWatchdog.AEP_MemoryFree free)

getMemoryInfoString

public static java.lang.String getMemoryInfoString()

getMemoryInfoString

public static java.lang.String getMemoryInfoString(E4DecimalSign ds)

getHeapMemoryInfoString

public static java.lang.String getHeapMemoryInfoString()

getHeapMemoryInfoString

public static java.lang.String getHeapMemoryInfoString(E4DecimalSign ds)

getPermGenMemoryInfoString

public static java.lang.String getPermGenMemoryInfoString()

getPermGenMemoryInfoString

public static java.lang.String getPermGenMemoryInfoString(E4DecimalSign ds)

getPermGenSpaceMXBean

public static java.lang.management.MemoryPoolMXBean getPermGenSpaceMXBean()

stop

public void stop()

stopAll

public static void stopAll()

_getSVNVersionString

public static java.lang.String _getSVNVersionString()

Get version info string from subversion.

Returns:

the version info string.

See Also:

E4Util.getRevisionCodeFromSVN(Class)