com.fr.intelli.metrics.memory

类 MemoryMeter

java.lang.Object

com.fr.intelli.metrics.memory.MemoryMeter

public class MemoryMeter
extends java.lang.Object

构造器概要

构造器

构造器和说明
MemoryMeter()

方法概要

方法

限定符和类型	方法和说明
static MemoryMeter	build() 获取一个内存测量实例
long	countChildren(java.lang.Object object)
MemoryMeter	enableDebug() Makes this MemoryMeter prints the classes tree to System.out when measuring
MemoryMeter	enableDebug(int depth) Makes this MemoryMeter prints the classes tree to System.out up to the specified depth when measuring
static boolean	hasInstrumentation()
MemoryMeter	ignoreKnownSingletons() return a MemoryMeter that ignores space occupied by known singletons such as Class objects and Enums
MemoryMeter	ignoreNonStrongReferences() return a MemoryMeter that ignores space occupied by known singletons such as Class objects and Enums
MemoryMeter	ignoreOuterClassReference()
long	measure(java.lang.Object object)
long	measureDeep(java.lang.Object object)
MemoryMeter	omitSharedBufferOverhead()
MemoryMeter	withGuessing(GuessPolicy guess)
MemoryMeter	withTrackerProvider(java.util.concurrent.Callable<java.util.Set<java.lang.Object>> trackerProvider)

从类继承的方法 java.lang.Object

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

构造器详细资料

MemoryMeter

public MemoryMeter()

方法详细资料

hasInstrumentation

public static boolean hasInstrumentation()

build

public static MemoryMeter build()

获取一个内存测量实例

返回:

内存测试实例

withTrackerProvider

public MemoryMeter withTrackerProvider(java.util.concurrent.Callable<java.util.Set<java.lang.Object>> trackerProvider)

参数:

trackerProvider -

返回:

a MemoryMeter with the given provider

omitSharedBufferOverhead

public MemoryMeter omitSharedBufferOverhead()

返回:

a MemoryMeter that only counts the bytes remaining in a ByteBuffer in measureDeep, rather than the full size of the backing array. TODO: handle other types of Buffers

withGuessing

public MemoryMeter withGuessing(GuessPolicy guess)

返回:

a MemoryMeter that permits guessing the size of objects if instrumentation isn't enabled

ignoreOuterClassReference

public MemoryMeter ignoreOuterClassReference()

返回:

a MemoryMeter that ignores the size of an outer class reference

ignoreKnownSingletons

public MemoryMeter ignoreKnownSingletons()

return a MemoryMeter that ignores space occupied by known singletons such as Class objects and Enums

ignoreNonStrongReferences

public MemoryMeter ignoreNonStrongReferences()

return a MemoryMeter that ignores space occupied by known singletons such as Class objects and Enums

enableDebug

public MemoryMeter enableDebug()

Makes this MemoryMeter prints the classes tree to System.out when measuring

enableDebug

public MemoryMeter enableDebug(int depth)

Makes this MemoryMeter prints the classes tree to System.out up to the specified depth when measuring

参数:

depth - the maximum depth for which the class tree must be printed

measure

public long measure(java.lang.Object object)

返回:

the shallow memory usage of @param object

抛出:

java.lang.NullPointerException - if object is null

measureDeep

public long measureDeep(java.lang.Object object)

返回:

the memory usage of @param object including referenced objects

抛出:

java.lang.NullPointerException - if object is null

countChildren

public long countChildren(java.lang.Object object)

返回:

the number of child objects referenced by @param object

抛出:

java.lang.NullPointerException - if object is null