org.rocksdb

Enum ReusedSynchronisationType

java.lang.Object

java.lang.Enum<ReusedSynchronisationType>

org.rocksdb.ReusedSynchronisationType

All Implemented Interfaces:

Serializable, Comparable<ReusedSynchronisationType>

public enum ReusedSynchronisationType
extends Enum<ReusedSynchronisationType>

Determines the type of synchronisation primitive used in native code.

Enum Constant Summary

Enum Constants

Enum Constant and Description
ADAPTIVE_MUTEX Use adaptive mutex, which spins in the user space before resorting to kernel.
MUTEX Standard mutex.
THREAD_LOCAL There is a reused buffer per-thread.

Method Summary

Modifier and Type	Method and Description
static ReusedSynchronisationType	getReusedSynchronisationType(byte value) Get ReusedSynchronisationType by byte value.
byte	getValue() Returns the byte value of the enumerations value
static ReusedSynchronisationType	valueOf(String name) Returns the enum constant of this type with the specified name.
static ReusedSynchronisationType[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

MUTEX

public static final ReusedSynchronisationType MUTEX

Standard mutex.

ADAPTIVE_MUTEX

public static final ReusedSynchronisationType ADAPTIVE_MUTEX

Use adaptive mutex, which spins in the user space before resorting to kernel. This could reduce context switch when the mutex is not heavily contended. However, if the mutex is hot, we could end up wasting spin time.

THREAD_LOCAL

public static final ReusedSynchronisationType THREAD_LOCAL

There is a reused buffer per-thread.

Method Detail

values

public static ReusedSynchronisationType[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

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

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static ReusedSynchronisationType valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

getValue

public byte getValue()

Returns the byte value of the enumerations value

Returns:

byte representation

getReusedSynchronisationType

public static ReusedSynchronisationType getReusedSynchronisationType(byte value)

Get ReusedSynchronisationType by byte value.

Parameters:

value - byte representation of ReusedSynchronisationType.

Returns:

ReusedSynchronisationType instance.

Throws:

IllegalArgumentException - if an invalid value is provided.