Package org.codehaus.groovy.vmplugin.v8

Class IndyInterface

java.lang.Object

org.codehaus.groovy.vmplugin.v8.IndyInterface

public class IndyInterface
extends Object

Bytecode level interface for bootstrap methods used by invokedynamic. This class provides a logging ability by using the boolean system property groovy.indy.logging. Other than that this class contains the interfacing methods with bytecode for invokedynamic as well as some helper methods and classes.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	IndyInterface.CallType	Enum for easy differentiation between call types

Field Summary

Fields

Modifier and Type	Field	Description
static final int	GROOVY_OBJECT	flags for method and property calls
static final int	IMPLICIT_THIS	flags for method and property calls
protected static final Logger	LOG	Logger
protected static final boolean	LOG_ENABLED	boolean to indicate if logging for indy is enabled
static final MethodHandles.Lookup	LOOKUP	LOOKUP constant used for for example unreflect calls
static final int	SAFE_NAVIGATION	flags for method and property calls
static final int	SPREAD_CALL	flags for method and property calls
protected static SwitchPoint	switchPoint
static final int	THIS_CALL	flags for method and property calls
static final int	UNCACHED_CALL	flags for method and property calls

Constructor Summary

Constructors

Constructor	Description
IndyInterface()

Method Summary

Modifier and Type	Method	Description
static CallSite	bootstrap(MethodHandles.Lookup caller, String callType, MethodType type, String name, int flags)	bootstrap method for method calls from Groovy compiled code with indy enabled.
static Object	fromCache(MutableCallSite callSite, Class<?> sender, String methodName, int callID, Boolean safeNavigation, Boolean thisCall, Boolean spreadCall, Object dummyReceiver, Object[] arguments)	Get the cached methodhandle.
protected static void	invalidateSwitchPoints()	Callback for constant meta class update change
protected static MethodHandle	makeFallBack(MutableCallSite mc, Class<?> sender, String name, int callID, MethodType type, boolean safeNavigation, boolean thisCall, boolean spreadCall)	Makes a fallback method for an invalidated method selection
static Object	selectMethod(MutableCallSite callSite, Class<?> sender, String methodName, int callID, Boolean safeNavigation, Boolean thisCall, Boolean spreadCall, Object dummyReceiver, Object[] arguments)	Core method for indy method selection using runtime types.
static CallSite	staticArrayAccess(MethodHandles.Lookup lookup, String name, MethodType type)

Methods inherited from class java.lang.Object

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

Field Details

SAFE_NAVIGATION

public static final int SAFE_NAVIGATION

flags for method and property calls

See Also:

• Constant Field Values

THIS_CALL

public static final int THIS_CALL

flags for method and property calls

See Also:

• Constant Field Values

GROOVY_OBJECT

public static final int GROOVY_OBJECT

flags for method and property calls

See Also:

• Constant Field Values

IMPLICIT_THIS

public static final int IMPLICIT_THIS

flags for method and property calls

See Also:

• Constant Field Values

SPREAD_CALL

public static final int SPREAD_CALL

flags for method and property calls

See Also:

• Constant Field Values

UNCACHED_CALL

public static final int UNCACHED_CALL

flags for method and property calls

See Also:

• Constant Field Values

LOG

protected static final Logger LOG

Logger

LOG_ENABLED

protected static final boolean LOG_ENABLED

boolean to indicate if logging for indy is enabled

LOOKUP

public static final MethodHandles.Lookup LOOKUP

LOOKUP constant used for for example unreflect calls

switchPoint

protected static SwitchPoint switchPoint

Constructor Details

IndyInterface

public IndyInterface()

Method Details

invalidateSwitchPoints

protected static void invalidateSwitchPoints()

Callback for constant meta class update change

bootstrap

public static CallSite bootstrap(MethodHandles.Lookup caller,
 String callType,
 MethodType type,
 String name,
 int flags)

bootstrap method for method calls from Groovy compiled code with indy enabled. This method gets a flags parameter which uses the following encoding:

• 1 is the flag value for safe navigation see SAFE_NAVIGATION
• 2 is the flag value for a call on this see THIS_CALL

Parameters:

caller - - the caller

callType - - the type of the call

type - - the call site type

name - - the real method name

flags - - call flags

Returns:

the produced CallSite

Since:

Groovy 2.1.0

makeFallBack

protected static MethodHandle makeFallBack(MutableCallSite mc,
 Class<?> sender,
 String name,
 int callID,
 MethodType type,
 boolean safeNavigation,
 boolean thisCall,
 boolean spreadCall)

Makes a fallback method for an invalidated method selection

fromCache

public static Object fromCache(MutableCallSite callSite,
 Class<?> sender,
 String methodName,
 int callID,
 Boolean safeNavigation,
 Boolean thisCall,
 Boolean spreadCall,
 Object dummyReceiver,
 Object[] arguments)
                        throws Throwable

Get the cached methodhandle. if the related methodhandle is not found in the inline cache, cache and return it.

Throws:

Throwable

selectMethod

public static Object selectMethod(MutableCallSite callSite,
 Class<?> sender,
 String methodName,
 int callID,
 Boolean safeNavigation,
 Boolean thisCall,
 Boolean spreadCall,
 Object dummyReceiver,
 Object[] arguments)
                           throws Throwable

Core method for indy method selection using runtime types.

Throws:

Throwable

staticArrayAccess

public static CallSite staticArrayAccess(MethodHandles.Lookup lookup,
 String name,
 MethodType type)

Since:

2.5.0