allocate-fobject-c

Arguments: type &optional size

This function is defined by the ACLWIN compatibility package. It is loaded with

(require :aclwffi)

However, it is for compatibility with Allegro CL 4.3.2, an early release of the UNIX product on Windows which had limited distribution, not compatibility with Allegro CL 3.0.x on Windows.

This function is provided for porting from Allegro CL 4.3.2 only and users with 4.3.2 code calling this function are urged to convert the call to an allocate-fobject call as quickly as possible. (Use the allocation argument of allocate-fobject to specify where the allocation should occur. Specify :c for allocation to get behavior equivalent to this macro.)

This function allocates an object of the given type in the C heap. If the size argument is given, then it is the minimum size (in bytes) of the data portion of the object that will be allocated. The object will not be moved by the garbage collector. The object will not be automatically reclaimed. To return the space to the C heap, call free-fobject-c. This object is represented in lisp by an integer (which points to the beginning of the object in memory).

See ftype.htm for information on foreign types in Allegro CL and foreign-functions.htm for general information on foreign functions in Allegro CL.

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This page was not revised from the 10.0 page.
Created 2019.8.20.