Function: with-mutex

with-mutex is a macro defined in subr.el.gz.

Signature

(with-mutex MUTEX &rest BODY)

Documentation

Invoke BODY with MUTEX held, releasing MUTEX when done.

This is the simplest safe way to acquire and release a mutex.

View in manual

Source Code

;; Defined in /usr/src/emacs/lisp/subr.el.gz
;;; Thread support.

(defmacro with-mutex (mutex &rest body)
  "Invoke BODY with MUTEX held, releasing MUTEX when done.
This is the simplest safe way to acquire and release a mutex."
  (declare (indent 1) (debug t))
  (let ((sym (make-symbol "mutex")))
    `(let ((,sym ,mutex))
       (mutex-lock ,sym)
       (unwind-protect
	   (progn ,@body)
	 (mutex-unlock ,sym)))))