diff options
Diffstat (limited to 'Lisp')
| -rw-r--r-- | Lisp/internal-utilities.lisp | 27 | ||||
| -rw-r--r-- | Lisp/parameters.lisp | 2 |
2 files changed, 27 insertions, 2 deletions
diff --git a/Lisp/internal-utilities.lisp b/Lisp/internal-utilities.lisp index 1c54068..87746b9 100644 --- a/Lisp/internal-utilities.lisp +++ b/Lisp/internal-utilities.lisp @@ -19,8 +19,31 @@ (defmacro atomically (&body body) - ;; FIXME: Use a reentrant global lock here. - `(progn ,@body)) + ;; FIXME + `(progn ,@body) + #+(or) + `(prog2 + (objcl-acquire-global-lock) + ,@body + (objcl-release-global-lock))) + + +(defmacro with-exclusive-access ((&rest objects) &body body) + (etypecase objects + (null `(progn ,@body)) + (cons `(with-lock ,(first objects) + (with-exclusive-access (,(rest objects)) + ,@body))))) + + +(defmacro with-lock (object &body body) + ;; FIXME: Implement LOCK-FOR-OBJECT. + (let ((lock (gensym "LOCK"))) + `(let ((,lock (lock-for-object ,object))) + (prog2 + (%objcl-acquire-lock ,lock) + (progn ,@body) + (%objcl-release-lock ,lock))))) (defun featurep (symbol) diff --git a/Lisp/parameters.lisp b/Lisp/parameters.lisp index 875adb8..a26908b 100644 --- a/Lisp/parameters.lisp +++ b/Lisp/parameters.lisp @@ -20,6 +20,8 @@ (defvar *runtime-initialisation-level* 0) +(defvar *object-locks* (make-hash-table :test 'eql)) + (defvar *boolean-return-exceptions* (make-hash-table :test #'equal)) (defvar *skip-retaining* nil) |