org.apache.flink.runtime.memory

类 SharedResources

java.lang.Object

org.apache.flink.runtime.memory.SharedResources

public final class SharedResources
extends Object

A map that keeps track of acquired shared resources and handles their allocation disposal.

嵌套类概要

嵌套类

限定符和类型	类和说明
static interface	SharedResources.ResourceAndSize<T extends AutoCloseable> A resource handle with size.

构造器概要

构造器

构造器和说明
SharedResources()

方法概要

限定符和类型	方法和说明
<T extends AutoCloseable> SharedResources.ResourceAndSize<T>	getOrAllocateSharedResource(String type, Object leaseHolder, org.apache.flink.util.function.LongFunctionWithException<T,Exception> initializer, long sizeForInitialization) Gets the shared memory resource for the given owner and registers a lease.
void	release(String type, Object leaseHolder, java.util.function.LongConsumer releaser) Releases a lease (identified by the lease holder object) for the given type.

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

SharedResources

public SharedResources()

方法详细资料

getOrAllocateSharedResource

public <T extends AutoCloseable> SharedResources.ResourceAndSize<T> getOrAllocateSharedResource(String type,
                                                                                                Object leaseHolder,
                                                                                                org.apache.flink.util.function.LongFunctionWithException<T,Exception> initializer,
                                                                                                long sizeForInitialization)
                                                                                         throws Exception

Gets the shared memory resource for the given owner and registers a lease. If the resource does not yet exist, it will be created via the given initializer function.

The resource must be released when no longer used. That releases the lease. When all leases are released, the resource is disposed.

抛出:

Exception

release

public void release(String type,
                    Object leaseHolder,
                    java.util.function.LongConsumer releaser)
             throws Exception

Releases a lease (identified by the lease holder object) for the given type. If no further leases exist, the resource is disposed.

This method takes an additional hook that is called when the resource is disposed.

抛出:

Exception