Module jdk.dynalink

Package jdk.dynalink.linker.support

Class SimpleLinkRequest

java.lang.Object

jdk.dynalink.linker.support.SimpleLinkRequest

All Implemented Interfaces:

LinkRequest

public class SimpleLinkRequest
extends Object
implements LinkRequest

Default simple implementation of LinkRequest.

Constructor Summary

Constructors

Constructor and Description
SimpleLinkRequest(CallSiteDescriptor callSiteDescriptor, boolean callSiteUnstable, Object... arguments) Creates a new link request.

Method Summary

Modifier and Type	Method and Description
Object[]	getArguments() Returns the arguments for the invocation being linked.
CallSiteDescriptor	getCallSiteDescriptor() Returns the call site descriptor for the call site being linked.
Object	getReceiver() Returns the first argument for the invocation being linked; this is typically the receiver object.
boolean	isCallSiteUnstable() Returns true if the call site is considered unstable, that is, it has been relinked more times than was specified in DynamicLinkerFactory.setUnstableRelinkThreshold(int).
LinkRequest	replaceArguments(CallSiteDescriptor newCallSiteDescriptor, Object... newArguments) Returns a request identical to this one with call site descriptor and arguments replaced with the ones specified.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleLinkRequest

public SimpleLinkRequest(CallSiteDescriptor callSiteDescriptor,
                         boolean callSiteUnstable,
                         Object... arguments)

Creates a new link request.

Parameters:

callSiteDescriptor - the descriptor for the call site being linked. Must not be null.

callSiteUnstable - true if the call site being linked is considered unstable.

arguments - the arguments for the invocation. Must not be null.

Throws:

NullPointerException - if either callSiteDescriptor or arguments is null.

Method Detail

getArguments

public Object[] getArguments()

Description copied from interface: LinkRequest

Returns the arguments for the invocation being linked. The returned array must be a clone; modifications to it must not affect the arguments in this request.

Specified by:

getArguments in interface LinkRequest

Returns:

the arguments for the invocation being linked.

getReceiver

public Object getReceiver()

Description copied from interface: LinkRequest

Returns the first argument for the invocation being linked; this is typically the receiver object. This is a shorthand for getArguments()[0] that also avoids the cloning of the arguments array.

Specified by:

getReceiver in interface LinkRequest

Returns:

the receiver object.

getCallSiteDescriptor

public CallSiteDescriptor getCallSiteDescriptor()

Description copied from interface: LinkRequest

Returns the call site descriptor for the call site being linked.

Specified by:

getCallSiteDescriptor in interface LinkRequest

Returns:

the call site descriptor for the call site being linked.

isCallSiteUnstable

public boolean isCallSiteUnstable()

Description copied from interface: LinkRequest

Returns true if the call site is considered unstable, that is, it has been relinked more times than was specified in DynamicLinkerFactory.setUnstableRelinkThreshold(int). Linkers should use this as a hint to prefer producing linkage that is more stable (its guard fails less frequently), even if that assumption causes a less effective version of an operation to be linked. This is just a hint, though, and linkers are allowed to ignore this property.

Specified by:

isCallSiteUnstable in interface LinkRequest

Returns:

true if the call site is considered unstable.

replaceArguments

public LinkRequest replaceArguments(CallSiteDescriptor newCallSiteDescriptor,
                                    Object... newArguments)

Description copied from interface: LinkRequest

Returns a request identical to this one with call site descriptor and arguments replaced with the ones specified.

Specified by:

replaceArguments in interface LinkRequest

Parameters:

newCallSiteDescriptor - the new call site descriptor

newArguments - the new arguments

Returns:

a new request identical to this one, except with the call site descriptor and arguments replaced with the specified ones.