cn.hutool.core.thread

Enum RejectPolicy

java.lang.Object

java.lang.Enum<RejectPolicy>

cn.hutool.core.thread.RejectPolicy

All Implemented Interfaces:

Serializable, Comparable<RejectPolicy>

public enum RejectPolicy
extends Enum<RejectPolicy>

线程拒绝策略枚举

如果设置了maxSize, 当总线程数达到上限, 会调用RejectedExecutionHandler进行处理，此枚举为JDK预定义的几种策略枚举表示

Since:

4.1.13

Author:

looly

Enum Constant Summary

Enum Constants

Enum Constant and Description
ABORT 处理程序遭到拒绝将抛出RejectedExecutionException
BLOCK 当任务队列过长时处于阻塞状态，直到添加到队列中，固定并发数去访问，并且不希望丢弃任务时使用此策略
CALLER_RUNS 由主线程来直接执行
DISCARD 放弃当前任务
DISCARD_OLDEST 如果执行程序尚未关闭，则位于工作队列头部的任务将被删除，然后重试执行程序（如果再次失败，则重复此过程）

Method Summary

Modifier and Type	Method and Description
RejectedExecutionHandler	getValue() 获取RejectedExecutionHandler枚举值
static RejectPolicy	valueOf(String name) Returns the enum constant of this type with the specified name.
static RejectPolicy[]	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

ABORT

public static final RejectPolicy ABORT

处理程序遭到拒绝将抛出RejectedExecutionException

DISCARD

public static final RejectPolicy DISCARD

放弃当前任务

DISCARD_OLDEST

public static final RejectPolicy DISCARD_OLDEST

如果执行程序尚未关闭，则位于工作队列头部的任务将被删除，然后重试执行程序（如果再次失败，则重复此过程）

CALLER_RUNS

public static final RejectPolicy CALLER_RUNS

由主线程来直接执行

BLOCK

public static final RejectPolicy BLOCK

当任务队列过长时处于阻塞状态，直到添加到队列中，固定并发数去访问，并且不希望丢弃任务时使用此策略

Method Detail

values

public static RejectPolicy[] 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 (RejectPolicy c : RejectPolicy.values())
    System.out.println(c);

Returns:

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

valueOf

public static RejectPolicy 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 RejectedExecutionHandler getValue()

获取RejectedExecutionHandler枚举值

Returns:

RejectedExecutionHandler