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Optimize bytes copying after receiving a message from zmq #158

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Optimize bytes copying after receiving a message from zmq #158

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8 changes: 6 additions & 2 deletions src/utilities.lisp
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Original file line number Diff line number Diff line change
Expand Up @@ -47,8 +47,12 @@

(defun unpack-foreign-msg-to-bytes (msg)
"Converts a foreign array of unsigned characters to a Lisp vector of such."
(cffi:foreign-array-to-lisp (pzmq:msg-data msg)
`(:array :uint8 ,(pzmq:msg-size msg))))
(flet ((copy-foreign-bytes (pointer len)
(let ((lisp-vector (cffi:make-shareable-byte-vector len)))
(cffi:with-pointer-to-vector-data (vec-ptr lisp-vector)
(cffi:foreign-funcall "memcpy" :pointer vec-ptr :pointer pointer :size len :pointer)
lisp-vector))))
(copy-foreign-bytes (pzmq:msg-data msg) (pzmq:msg-size msg))))

(defun global-function-p (symbol)
"Return true if SYMBOL is a symbol naming a global function. Return false otherwise."
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