r8844: laptop updates

[kmrcl.git] / macros.lisp

diff --git a/macros.lisp b/macros.lisp
index 044f1f6b16de173bbb3d5855c43dbb7ed7d65e87..9b6150a470dc9597470fe8ad2ba8e303e9c3e853 100644 (file)
--- a/macros.lisp
+++ b/macros.lisp
@@ -7,7 +7,7 @@
 ;;;; Programmer:    Kevin M. Rosenberg
 ;;;; Date Started:  Apr 2000
 ;;;;
-;;;; $Id: macros.lisp,v 1.5 2003/08/06 11:37:23 kevin Exp $
+;;;; $Id$
 ;;;;
 ;;;; This file, part of KMRCL, is Copyright (c) 2002 by Kevin M. Rosenberg
 ;;;;
@@ -187,3 +187,55 @@
       ,@(when docp
              `((setf (documentation ',var 'variable) ,doc)))
       (define-symbol-macro ,var ,backing-var))))
+
+(defmacro def-cached-vector (name element-type)
+  (let ((get-name (concat-symbol "get-" name "-vector"))
+       (release-name (concat-symbol "release-" name "-vector"))
+       (table-name (concat-symbol "*cached-" name "-table*"))
+       (lock-name (concat-symbol "*cached-" name "-lock*")))
+    `(eval-when (:compile-toplevel :load-toplevel :execute)
+       (defvar ,table-name (make-hash-table :test 'equal))
+       (defvar ,lock-name (kmrcl::make-lock ,name))
+        
+        (defun ,get-name (size)
+          (kmrcl::with-lock-held (,lock-name)
+            (let ((buffers (gethash (cons size ,element-type) ,table-name)))
+              (if buffers
+                  (let ((buffer (pop buffers)))
+                    (setf (gethash (cons size ,element-type) ,table-name) buffers)
+                    buffer)
+                (make-array size :element-type ,element-type)))))
+        
+        (defun ,release-name (buffer)
+          (kmrcl::with-lock-held (,lock-name)
+            (let ((buffers (gethash (cons (array-total-size buffer)
+                                          ,element-type)
+                                    ,table-name)))
+              (setf (gethash (cons (array-total-size buffer)
+                                   ,element-type) ,table-name)
+                (cons buffer buffers))))))))
+
+(defmacro def-cached-instance (name)
+  (let* ((new-name (concat-symbol "new-" name "-instance"))
+        (release-name (concat-symbol "release-" name "-instance"))
+        (cache-name (concat-symbol "*cached-" name "-instance-table*"))
+        (lock-name (concat-symbol "*cached-" name "-instance-lock*")))
+    `(eval-when (:compile-toplevel :load-toplevel :execute)
+       (defvar ,cache-name nil)
+       (defvar ,lock-name (kmrcl::make-lock ',name))
+        
+        (defun ,new-name ()
+          (kmrcl::with-lock-held (,lock-name)
+            (if ,cache-name
+                (pop ,cache-name)
+                (make-instance ',name))))
+        
+        (defun ,release-name (instance)
+          (kmrcl::with-lock-held (,lock-name)
+            (push instance ,cache-name))))))
+
+(defmacro with-ignore-errors (&rest forms)
+  `(progn
+     ,@(mapcar
+       (lambda (x) (list 'ignore-errors x))
+       forms)))