Package org.apache.ivy.util
Class MemoryUtil
- java.lang.Object
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- org.apache.ivy.util.MemoryUtil
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public final class MemoryUtil extends java.lang.Object
Memory related utilities.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description 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.
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Method Detail
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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.
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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 sinceRuntime.gc()
is only advisory, results returned by this method should be treated as rough approximation only.- Returns:
- the currently used memory, in bytes.
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main
public static void main(java.lang.String[] args) throws java.lang.ClassNotFoundException
- Throws:
java.lang.ClassNotFoundException
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