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ext:stack-overflow Stack overflow condition. ext:stack-overflow, storage-condition, serious-condition, condition, t ext:stack-overflow-size condition integer ext:stack-overflow-type condition concept integer A non-negative integer. concept A symbol from , except ext:heap-size. This condition is signaled when one of the stack limits in are violated or dangerously approached. It can be handled by resetting the limits and continuing, or jumping to an outer control point. ext:storage-exhausted Memory overflow condition. ext:storage-exhausted, storage-condition, serious-condition, condition, t This condition is signaled when &ECL; exhausts the ext:heap-size limit from . In handling this condition &ECL; follows this logic If the heap size limit was set to 0 (that is no limit), but there is some free space in the safety region &ECL; frees this space and issues a non-restartable error. The user may jump to an outer point or quit. If the heap size had a finite limit, &ECL; offers the user the chance to resize it, issuing a restartable condition. The user may at this point use (ext:set-limit 'ext:heap-size 0) to remove the heap limit and avoid further messages, or use the (continue) restart to let &ECL; enlarge the heap by some amount. Independently of the heap size limit, if &ECL; finds that ther is no space to free or to grow, &ECL; simply quits. There will be no chance to do some cleanup because there is no way to cons any additional data. ext:get-finalizer Return finalizer associated to an object. ext:get-finalizer object object Any lisp object. This function returns the finalizer associated to an object, or &nil;. ext:get-limit Query a memory or stack limit. ext:get-limit concept concept A symbol. Queries the different memory and stack limits that condition &ECL;'s behavior. The value to be queried is denoted by the symbol concept, which should be one from the list ext:set-finalizer Associate a finalizer to an object. ext:set-finalizer object function object Any lisp object. function A function or closure that takes one argument or &nil;. If function is &nil; no finalizer is associated to the object. Otherwise function must be a function or a closure of one argument, which will be invoked before the object is destroyed. Close a file associated to an object. (defclass my-class () ((file :initarg :file :initform nil))) (defun finalize-my-class (x) (let ((s (slot-value x 'file))) (when s (format t "~%;;; Closing" s) (close s)))) (defmethod initialize-instance :around ((my-instance my-class) &rest args) (ext:set-finalizer my-instance #'finalize-my-class) (call-next-method)) (progn (make-instance 'my-class :file (open "~/.ecl.old" :direction :input)) nil) (si::gc t) (si::gc t) ;; Closing ext:set-limit Set a memory or stack limit. ext:set-limit concept value concept A symbol. function A positive integer. Changes the different memory and stack limits that condition &ECL;'s behavior. The value to be changed is denoted by the symbol concept, while the value is the new maximum size. The valid symbols and units are listed in . Note that the limit has to be positive, but it may be smaller than the previous value of the limit. However, if the supplied value is smaller than what &ECL; is using at the moment, the new value will be silently ignored. Concept Units Default Command line ext:frame-stack Nested frames 2048 --frame-stack ext:binding-stack Bindings 8192 ext:c-stack Bytes 128 kilobytes --c-stack ext:heap-size Bytes 256 megabytes --heap-size ext:lisp-stack Bytes 32 kilobytes --lisp-stack