⎕ffi FFI Helpers r←⎕ffi

r contains the following entries:

null: Null Pointer

A null pointer of type u8.

New: New Object

Left argument is a type (as per ⎕FFI), right argument is a value compatible with that type. Allocates memory and stores that value. Returns the pointer as a pointer object.

NewA: New Array of Objects

Left argument is a type, right argument is a vector of values compatible with that type. Allocates memory and stores those values contiguously. Returns a pointer to the beginning of the values as a pointer object.

NewZ: New Zero-terminated Array of Objects

Left argument is a type, right argument is a vector of values compatible with that type. Allocates memory and stores those values contiguously, followed by a zero. Returns a pointer ot the beginning of the values as a pointer object.

Alloc: Allocate

Left argument is a natural, which defaults to 1. Right argument is a type. Allocates memory enough to fit left argument values of right argument type, and fills the memory with zeros. Returns a pointer to the beginning of the allocated memory.

Free: Free

Argument is a pointer returned by any pointer-creating function both from here and from ⎕FFI. Frees the pointer.

SizeOf: Size Of

Argument is an array of strings. Each string is replaced with the size of the type it describes, in bytes.