Package software.amazon.awssdk.crt

Class CrtResource

java.lang.Object

software.amazon.awssdk.crt.CrtResource

All Implemented Interfaces:

AutoCloseable

Direct Known Subclasses:

AwsSigningConfig, ClientBootstrap, ClientConnection, ClientConnectionContinuation, CredentialsProvider, EccKeyPair, EventLoopGroup, HostResolver, Http2StreamManager, HttpClientConnection, HttpClientConnectionManager, HttpStreamBase, Message, Mqtt5Client, MqttClient, MqttClientConnection, MqttConnectionConfig, MqttRequestResponseClient, Pkcs11Lib, S3Client, S3MetaRequest, ServerBootstrap, ServerConnection, ServerConnectionContinuation, ServerListener, SocketOptions, StreamingOperation, TlsConnectionOptions, TlsContext, TlsContextOptions, TlsContextPkcs11Options

public abstract class CrtResource
extends Object
implements AutoCloseable

This wraps a native pointer and/or one or more references to an AWS Common Runtime resource. It also ensures that the first time a resource is referenced, the CRT will be loaded and bound.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	CrtResource.ResourceInstance	Debug/diagnostic data about a CrtResource object

Constructor Summary

Constructors

Constructor	Description
CrtResource()	Default constructor

Method Summary

Modifier and Type	Method	Description
void	addRef()	Increments the reference count to this resource.
void	addReferenceTo(CrtResource resource)	Marks a resource as referenced by this resource.
void	close()
static void	collectNativeResource(Consumer<CrtResource.ResourceInstance> fn)	Applies a generic diagnostic-gathering functor to all CRTResource objects
static void	collectNativeResources(Consumer<String> fn)	Applies a resource description consuming functor to all CRTResource objects
void	decRef()	Decrements the reference count to this resource.
void	decRef(CrtResource decRefInstigator)	Decrements the reference count to this resource.
long	getNativeHandle()	returns the native handle associated with this CRTResource.
String	getResourceLogDescription()	Gets a debug/diagnostic string describing this resource and its reference state
boolean	isNull()	Checks if this resource's native handle is NULL.
static void	logNativeResources()	Debug method to log all of the currently un-closed CRTResource objects.
static void	logNativeResources(Log.LogLevel logLevel)
void	removeReferenceTo(CrtResource resource)	Removes a reference from this resource to another.
void	setDescription(String description)	Sets a custom logging description for this resource
static void	waitForNoResources()	Debug/test method to wait for the CRTResource count to drop to zero.

Methods inherited from class java.lang.Object

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

Constructor Detail

CrtResource

public CrtResource()

Default constructor

Method Detail

addReferenceTo

public void addReferenceTo(CrtResource resource)

Marks a resource as referenced by this resource.

Parameters:

resource - The resource to add a reference to

removeReferenceTo

public void removeReferenceTo(CrtResource resource)

Removes a reference from this resource to another.

Parameters:

resource - The resource to remove a reference to

getNativeHandle

public long getNativeHandle()

returns the native handle associated with this CRTResource.

Returns:

native address

addRef

public void addRef()

Increments the reference count to this resource.

isNull

public boolean isNull()

Checks if this resource's native handle is NULL. For always-null resources this is always true. For all other resources it means it has already been cleaned up or was not properly constructed.

Returns:

true if no native resource is bound, false otherwise

close

public void close()

Specified by:

close in interface AutoCloseable

decRef

public void decRef(CrtResource decRefInstigator)

Decrements the reference count to this resource. If zero is reached, begins (and possibly completes) the resource's cleanup process.

Parameters:

decRefInstigator - Instigating CrtResource

decRef

public void decRef()

Decrements the reference count to this resource.

setDescription

public void setDescription(String description)

Sets a custom logging description for this resource

Parameters:

description - custom resource description

getResourceLogDescription

public String getResourceLogDescription()

Gets a debug/diagnostic string describing this resource and its reference state

Returns:

resource diagnostic string

collectNativeResources

public static void collectNativeResources(Consumer<String> fn)

Applies a resource description consuming functor to all CRTResource objects

Parameters:

fn - function to apply to each resource description

collectNativeResource

public static void collectNativeResource(Consumer<CrtResource.ResourceInstance> fn)

Applies a generic diagnostic-gathering functor to all CRTResource objects

Parameters:

fn - function to apply to each outstanding Crt resource

logNativeResources

public static void logNativeResources()

Debug method to log all of the currently un-closed CRTResource objects.

logNativeResources

public static void logNativeResources(Log.LogLevel logLevel)

waitForNoResources

public static void waitForNoResources()

Debug/test method to wait for the CRTResource count to drop to zero. Times out with an exception after a period of waiting.