org.apache.ivy.util
Class MemoryUtil

java.lang.Object
  extended by org.apache.ivy.util.MemoryUtil

public final class MemoryUtil
extends java.lang.Object

Memory related utilities.


Method Summary
static long getUsedMemory()
          Returns the currently used memory, after calling garbage collector and waiting enough to get maximal chance it is actually called.
static void main(java.lang.String[] args)
           
static long sizeOf(java.lang.Class clazz)
          Returns the approximate size of a default instance of the given class.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Method Detail

sizeOf

public static long sizeOf(java.lang.Class clazz)
Returns the approximate size of a default instance of the given class.

Parameters:
clazz - the class to evaluate.
Returns:
the estimated size of instance, in bytes.

getUsedMemory

public static long getUsedMemory()
Returns the currently used memory, after calling garbage collector and waiting enough to get maximal chance it is actually called. But since Runtime.gc() is only advisory, results returned by this method should be treated as rough approximation only.

Returns:
the currently used memory, in bytes.

main

public static void main(java.lang.String[] args)
                 throws java.lang.ClassNotFoundException
Throws:
java.lang.ClassNotFoundException