org.rocksdb

枚举 MemoryUsageType

java.lang.Object

java.lang.Enum<MemoryUsageType>

org.rocksdb.MemoryUsageType

所有已实现的接口:

java.io.Serializable, java.lang.Comparable<MemoryUsageType>

public enum MemoryUsageType
extends java.lang.Enum<MemoryUsageType>

MemoryUsageType

The value will be used as a key to indicate the type of memory usage described

枚举常量概要

枚举常量

枚举常量和说明
kCacheTotal Memory usage by Cache.
kMemTableTotal Memory usage of all the mem-tables.
kMemTableUnFlushed Memory usage of those un-flushed mem-tables.
kNumUsageTypes Max usage types - copied to keep 1:1 with native.
kTableReadersTotal Memory usage of all the table readers.

方法概要

限定符和类型	方法和说明
static MemoryUsageType	getMemoryUsageType(byte byteIdentifier) Get the MemoryUsageType enumeration value by passing the byte identifier to this method.
byte	getValue() Returns the byte value of the enumerations value
static MemoryUsageType	valueOf(java.lang.String name) 返回带有指定名称的该类型的枚举常量。
static MemoryUsageType[]	values() 按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。

从类继承的方法 java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

kMemTableTotal

public static final MemoryUsageType kMemTableTotal

Memory usage of all the mem-tables.

kMemTableUnFlushed

public static final MemoryUsageType kMemTableUnFlushed

Memory usage of those un-flushed mem-tables.

kTableReadersTotal

public static final MemoryUsageType kTableReadersTotal

Memory usage of all the table readers.

kCacheTotal

public static final MemoryUsageType kCacheTotal

Memory usage by Cache.

kNumUsageTypes

public static final MemoryUsageType kNumUsageTypes

Max usage types - copied to keep 1:1 with native.

方法详细资料

values

public static MemoryUsageType[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

for (MemoryUsageType c : MemoryUsageType.values())
    System.out.println(c);

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static MemoryUsageType valueOf(java.lang.String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

java.lang.IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

java.lang.NullPointerException - 如果参数为空值

getValue

public byte getValue()

Returns the byte value of the enumerations value

返回:

byte representation

getMemoryUsageType

public static MemoryUsageType getMemoryUsageType(byte byteIdentifier)

Get the MemoryUsageType enumeration value by passing the byte identifier to this method.

参数:

byteIdentifier - of MemoryUsageType.

返回:

MemoryUsageType instance.

抛出:

java.lang.IllegalArgumentException - if the usage type for the byteIdentifier cannot be found