/usr/share/acl2-7.2dfsg/books/misc/with-waterfall-parallelism.lisp is in acl2-books-source 7.2dfsg-3.
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; License: (An MIT/X11-style license)
;
; Permission is hereby granted, free of charge, to any person obtaining a
; copy of this software and associated documentation files (the "Software"),
; to deal in the Software without restriction, including without limitation
; the rights to use, copy, modify, merge, publish, distribute, sublicense,
; and/or sell copies of the Software, and to permit persons to whom the
; Software is furnished to do so, subject to the following conditions:
;
; The above copyright notice and this permission notice shall be included in
; all copies or substantial portions of the Software.
;
; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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; DEALINGS IN THE SOFTWARE.
; Defines a macro that temporarily disables waterfall parallelism and then
; restores it to its previous value. Perhaps the calls of
; set-waterfall-parallelism need not be local, but be careful about removing
; the LOCALs: perhaps that would cause problems for how
; set-waterfall-parallelism changes the memoization status of functions, in the
; case of locally defined functions. Another reason to keep the LOCALs is that
; the user of this macro will be unhappy if it messes with
; waterfall-parallelism settings when including a book.
(in-package "ACL2")
(include-book "xdoc/top" :dir :system)
(defun with-waterfall-parallelism-fn (events state)
; (declare (xargs :guard (state-p state) :stobjs state))
(declare (xargs :mode :program :stobjs state))
(let ((curr-waterfall-parallelism-val
(f-get-global 'waterfall-parallelism state)))
`(progn (local (make-event
(er-progn (set-waterfall-parallelism t)
(value '(value-triple nil)))
:check-expansion t))
,@events
(local (make-event
(er-progn (set-waterfall-parallelism
',curr-waterfall-parallelism-val)
(value '(value-triple t)))
:check-expansion t)))))
(defmacro with-waterfall-parallelism (&rest events)
`(make-event (with-waterfall-parallelism-fn ',events state)))
(defxdoc with-waterfall-parallelism
:parents (parallelism)
:short "Enable waterfall parallelism for an enclosed event"
:long "<p>Example usage:</p>
@({
(with-waterfall-parallelism
(defthm assoc-append
(equal (append x (append y z))
(append (append x y) z))))
})")
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