Uses of Class
java.lang.invoke.VarHandle
Package
Description
Provides low-level access to memory and functions outside the Java runtime.
The
java.lang.invoke
package provides low-level primitives for interacting
with the Java Virtual Machine.-
Uses of VarHandle in java.lang.foreign
Modifier and TypeMethodDescriptionMemoryLayout.arrayElementVarHandle
(MemoryLayout.PathElement... elements) Creates a var handle that accesses adjacent elements in a memory segment at offsets selected by the given layout path, where the accessed elements have this layout, and where the initial layout in the path is this layout.MemoryLayout.varHandle
(MemoryLayout.PathElement... elements) Creates a var handle that accesses a memory segment at the offset selected by the given layout path, where the initial layout in the path is this layout.ValueLayout.varHandle()
Returns a var handle which can be used to access values described by this value layout, in a given memory segment. -
Uses of VarHandle in java.lang.invoke
Modifier and TypeClassDescriptionstatic final class
A nominal descriptor for aVarHandle
constant.Modifier and TypeMethodDescriptionstatic VarHandle
MethodHandles.arrayElementVarHandle
(Class<?> arrayClass) Produces a VarHandle giving access to elements of an array of typearrayClass
.static VarHandle
ConstantBootstraps.arrayVarHandle
(MethodHandles.Lookup lookup, String name, Class<VarHandle> type, Class<?> arrayClass) Finds aVarHandle
for an array type.static VarHandle
MethodHandles.byteArrayViewVarHandle
(Class<?> viewArrayClass, ByteOrder byteOrder) Produces a VarHandle giving access to elements of abyte[]
array viewed as if it were a different primitive array type, such asint[]
orlong[]
.static VarHandle
MethodHandles.byteBufferViewVarHandle
(Class<?> viewArrayClass, ByteOrder byteOrder) Produces a VarHandle giving access to elements of aByteBuffer
viewed as if it were an array of elements of a different primitive component type to that ofbyte
, such asint[]
orlong[]
.static VarHandle
MethodHandles.collectCoordinates
(VarHandle target, int pos, MethodHandle filter) Adapts a target var handle by pre-processing a sub-sequence of its coordinate values with a filter (a method handle).static VarHandle
MethodHandles.dropCoordinates
(VarHandle target, int pos, Class<?>... valueTypes) Returns a var handle which will discard some dummy coordinates before delegating to the target var handle.static VarHandle
ConstantBootstraps.fieldVarHandle
(MethodHandles.Lookup lookup, String name, Class<VarHandle> type, Class<?> declaringClass, Class<?> fieldType) Finds aVarHandle
for an instance field.static VarHandle
MethodHandles.filterCoordinates
(VarHandle target, int pos, MethodHandle... filters) Adapts a target var handle by pre-processing incoming coordinate values using unary filter functions.static VarHandle
MethodHandles.filterValue
(VarHandle target, MethodHandle filterToTarget, MethodHandle filterFromTarget) Adapts a target var handle by pre-processing incoming and outgoing values using a pair of filter functions.MethodHandles.Lookup.findStaticVarHandle
(Class<?> decl, String name, Class<?> type) Produces a VarHandle giving access to a static fieldname
of typetype
declared in a class of typedecl
.MethodHandles.Lookup.findVarHandle
(Class<?> recv, String name, Class<?> type) Produces a VarHandle giving access to a non-static fieldname
of typetype
declared in a class of typerecv
.static VarHandle
MethodHandles.insertCoordinates
(VarHandle target, int pos, Object... values) Provides a target var handle with one or more bound coordinates in advance of the var handle's invocation.static VarHandle
MethodHandles.permuteCoordinates
(VarHandle target, List<Class<?>> newCoordinates, int... reorder) Provides a var handle which adapts the coordinate values of the target var handle, by re-arranging them so that the new coordinates match the provided ones.VarHandle.VarHandleDesc.resolveConstantDesc
(MethodHandles.Lookup lookup) static VarHandle
ConstantBootstraps.staticFieldVarHandle
(MethodHandles.Lookup lookup, String name, Class<VarHandle> type, Class<?> declaringClass, Class<?> fieldType) Finds aVarHandle
for a static field.MethodHandles.Lookup.unreflectVarHandle
(Field f) Produces a VarHandle giving access to a reflected fieldf
of typeT
declared in a class of typeR
.abstract VarHandle
VarHandle.withInvokeBehavior()
Returns a VarHandle, with access to the same variable(s) as this VarHandle, but whose invocation behavior of access mode methods is adjusted to invoke behavior.abstract VarHandle
VarHandle.withInvokeExactBehavior()
Returns a VarHandle, with access to the same variable(s) as this VarHandle, but whose invocation behavior of access mode methods is adjusted to invoke-exact behavior.Modifier and TypeMethodDescriptionstatic VarHandle
MethodHandles.collectCoordinates
(VarHandle target, int pos, MethodHandle filter) Adapts a target var handle by pre-processing a sub-sequence of its coordinate values with a filter (a method handle).static VarHandle
MethodHandles.dropCoordinates
(VarHandle target, int pos, Class<?>... valueTypes) Returns a var handle which will discard some dummy coordinates before delegating to the target var handle.static VarHandle
MethodHandles.filterCoordinates
(VarHandle target, int pos, MethodHandle... filters) Adapts a target var handle by pre-processing incoming coordinate values using unary filter functions.static VarHandle
MethodHandles.filterValue
(VarHandle target, MethodHandle filterToTarget, MethodHandle filterFromTarget) Adapts a target var handle by pre-processing incoming and outgoing values using a pair of filter functions.static VarHandle
MethodHandles.insertCoordinates
(VarHandle target, int pos, Object... values) Provides a target var handle with one or more bound coordinates in advance of the var handle's invocation.static VarHandle
MethodHandles.permuteCoordinates
(VarHandle target, List<Class<?>> newCoordinates, int... reorder) Provides a var handle which adapts the coordinate values of the target var handle, by re-arranging them so that the new coordinates match the provided ones.Modifier and TypeMethodDescriptionstatic VarHandle
ConstantBootstraps.arrayVarHandle
(MethodHandles.Lookup lookup, String name, Class<VarHandle> type, Class<?> arrayClass) Finds aVarHandle
for an array type.static VarHandle
ConstantBootstraps.fieldVarHandle
(MethodHandles.Lookup lookup, String name, Class<VarHandle> type, Class<?> declaringClass, Class<?> fieldType) Finds aVarHandle
for an instance field.static VarHandle
ConstantBootstraps.staticFieldVarHandle
(MethodHandles.Lookup lookup, String name, Class<VarHandle> type, Class<?> declaringClass, Class<?> fieldType) Finds aVarHandle
for a static field.