Generic Function: ALLOCATE-BLOCK

Documentation

Allocates a block of the requested size and returns the heap position of that block. If the free list is full and EXPAND is true, the system will try to expand the free list; otherwise it returns nil. As a second value, ALLOCATE-BLOCK returns the number of octets that were allocated. Note: both the requested size and the returned heap position include the block's header.

Source

(defgeneric allocate-block (heap &key size expand)
  (:documentation "Allocates a block of the requested size and returns
the heap position of that block.  If the free list is full and EXPAND
is true, the system will try to expand the free list; otherwise it
returns nil.
  As a second value, ALLOCATE-BLOCK returns the number of octets that
were allocated.
Note: both the requested size and the returned heap position include
the block's header."))