fli:allocate-foreign-object

(fli:allocate-foreign-object &key type pointer-type nelems initial-element initial-contents fill)

Allocates nelems (default 1) objects of the FLI type type -- or the pointee of pointer-type, (:pointer type) -- in zeroed foreign memory and answers a foreign pointer to the first. fill sets every byte; initial-element sets every object and initial-contents, a sequence, the first ones. The memory is the process's heap on every target and lives until fli:free-foreign-object. Part of the macOS-only fli package, beside objc -- the interpreter (java -jar, or the rontolisp native binary), a compiled .class / .jar and a --native executable for macOS on Apple silicon, never a .wasm. See the macOS GUI guide.

CL-USER> (defvar *p* (fli:allocate-foreign-object :type :double :nelems 3 :initial-contents '(1 2.5 3)))
*P*
CL-USER> (fli:dereference *p* :index 1)
2.5
CL-USER> (fli:free-foreign-object *p*)
NIL