Module jdk.dynalink

Package jdk.dynalink.linker

Interface LinkRequest

All Known Implementing Classes:

SimpleLinkRequest

public interface LinkRequest

Represents a request to link a particular invocation at a particular call site. Instances of these requests will be constructed and passed to all GuardingDynamicLinker objects managed by the DynamicLinker that is trying to link the call site.

Since:

9

Method Summary

Modifier and Type	Method	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 callSiteDescriptor, Object... arguments)	Returns a request identical to this one with call site descriptor and arguments replaced with the ones specified.

Method Details

getCallSiteDescriptor

CallSiteDescriptor getCallSiteDescriptor()

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

Returns:

the call site descriptor for the call site being linked.

getArguments

Object[] getArguments()

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.

Returns:

the arguments for the invocation being linked.

getReceiver

Object getReceiver()

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.

Returns:

the receiver object.

isCallSiteUnstable

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). 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.

Returns:

true if the call site is considered unstable.

replaceArguments

LinkRequest replaceArguments(CallSiteDescriptor callSiteDescriptor,
 Object... arguments)

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

Parameters:

callSiteDescriptor - the new call site descriptor

arguments - the new arguments

Returns:

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