Uses of Class
jdk.incubator.foreign.FunctionDescriptor

Packages that use FunctionDescriptor

Package	Description
jdk.incubator.foreign	Classes to support low-level and efficient foreign memory/function access, directly from Java.

Uses of FunctionDescriptor in jdk.incubator.foreign

Methods in jdk.incubator.foreign that return FunctionDescriptor

Modifier and Type	Method	Description
static FunctionDescriptor	FunctionDescriptor.of(MemoryLayout resLayout, MemoryLayout... argLayouts)	Create a function descriptor with given return and argument layouts.
static FunctionDescriptor	FunctionDescriptor.ofVoid(MemoryLayout... argLayouts)	Create a function descriptor with given argument layouts and no return layout.
FunctionDescriptor	FunctionDescriptor.withAppendedArgumentLayouts(MemoryLayout... addedLayouts)	Create a new function descriptor with the given argument layouts appended to the argument layout array of this function descriptor.
FunctionDescriptor	FunctionDescriptor.withAttribute(String name, Constable value)	Returns a new function descriptor which features the same attributes as this descriptor, plus the newly specified attribute.
FunctionDescriptor	FunctionDescriptor.withReturnLayout(MemoryLayout newReturn)	Create a new function descriptor with the given memory layout as the new return layout.
FunctionDescriptor	FunctionDescriptor.withVoidReturnLayout()	Create a new function descriptor with the return layout dropped.

Methods in jdk.incubator.foreign that return types with arguments of type FunctionDescriptor

Modifier and Type	Method	Description
Optional<DynamicConstantDesc<FunctionDescriptor>>	FunctionDescriptor.describeConstable()

Methods in jdk.incubator.foreign with parameters of type FunctionDescriptor

Modifier and Type	Method	Description
MethodHandle	CLinker.downcallHandle(Addressable symbol, MethodType type, FunctionDescriptor function)	Obtain a foreign method handle, with given type, which can be used to call a target foreign function at a given address and featuring a given function descriptor.
MemorySegment	CLinker.upcallStub(MethodHandle target, FunctionDescriptor function)	Allocates a native segment whose base address (see MemorySegment.address()) can be passed to other foreign functions (as a function pointer); calling such a function pointer from native code will result in the execution of the provided method handle.