#!+sb-doc
"the fixnum closest in value to negative infinity")
\f
-;;;; magic specials initialized by genesis
+;;;; magic specials initialized by GENESIS
;;; FIXME: The DEFVAR here is redundant with the (DECLAIM (SPECIAL ..))
;;; of all static symbols in early-impl.lisp.
-#!-gengc
(progn
(defvar *current-catch-block*)
(defvar *current-unwind-protect-block*)
\f
;;; specials initialized by !COLD-INIT
-;;; FIXME: These could be converted to DEFVARs, and the stuff shared
-;;; in both #!+GENGC and #!-GENGC (actually everything in #!+GENGC)
-;;; could be made non-conditional.
-(declaim
- #!-gengc
- (special *gc-inhibit* *already-maybe-gcing*
- *need-to-collect-garbage*
- *gc-notify-stream*
- *before-gc-hooks* *after-gc-hooks*
- #!+x86 *pseudo-atomic-atomic*
- #!+x86 *pseudo-atomic-interrupted*
- sb!unix::*interrupts-enabled*
- sb!unix::*interrupt-pending*
- *type-system-initialized*)
- #!+gengc
- (special *before-gc-hooks* *after-gc-hooks*
- *gc-notify-stream*
- *type-system-initialized*))
+;;; FIXME: These could be converted to DEFVARs.
+(declaim (special *gc-inhibit* *already-maybe-gcing*
+ *need-to-collect-garbage*
+ *gc-notify-stream*
+ *before-gc-hooks* *after-gc-hooks*
+ #!+x86 *pseudo-atomic-atomic*
+ #!+x86 *pseudo-atomic-interrupted*
+ sb!unix::*interrupts-enabled*
+ sb!unix::*interrupt-pending*
+ *type-system-initialized*))
(defvar *cold-init-complete-p*)
\f
;;;; working with *CURRENT-ERROR-DEPTH* and *MAXIMUM-ERROR-DEPTH*
-;;; INFINITE-ERROR-PROTECT is used by ERROR and friends to keep us out of
-;;; hyperspace.
+;;; INFINITE-ERROR-PROTECT is used by ERROR and friends to keep us out
+;;; of hyperspace.
(defmacro infinite-error-protect (&rest forms)
`(unless (infinite-error-protector)
+ (/show0 "back from INFINITE-ERROR-PROTECTOR")
(let ((*current-error-depth* (1+ *current-error-depth*)))
+ (/show0 "in INFINITE-ERROR-PROTECT, incremented error depth")
+ #+sb-show (sb-debug:backtrace)
,@forms)))
;;; a helper function for INFINITE-ERROR-PROTECT
(defun infinite-error-protector ()
+ (/show0 "entering INFINITE-ERROR-PROTECTOR, *CURRENT-ERROR-DEPTH*=..")
+ (/hexstr *current-error-depth*)
(cond ((not *cold-init-complete-p*)
(%primitive print "Argh! error in cold init, halting")
(%primitive sb!c:halt))
(%primitive print "Argh! corrupted error depth, halting")
(%primitive sb!c:halt))
((> *current-error-depth* *maximum-error-depth*)
+ (/show0 "*MAXIMUM-ERROR-DEPTH*=..")
+ (/hexstr *maximum-error-depth*)
(/show0 "in INFINITE-ERROR-PROTECTOR, calling ERROR-ERROR")
(error-error "Help! "
*current-error-depth*
"KERNEL:*MAXIMUM-ERROR-DEPTH* exceeded.")
t)
(t
+ (/show0 "returning normally from INFINITE-ERROR-PROTECTOR")
nil)))
;;; FIXME: I had a badly broken version of INFINITE-ERROR-PROTECTOR at
(defconstant bytes-per-scrub-unit 2048)
+;;; Zero the unused portion of the control stack so that old objects
+;;; are not kept alive because of uninitialized stack variables.
+;;;
+;;; FIXME: Why do we need to do this instead of just letting GC read
+;;; the stack pointer and avoid messing with the unused portion of
+;;; the control stack? (Is this a multithreading thing where there's
+;;; one control stack and stack pointer per thread, and it might not
+;;; be easy to tell what a thread's stack pointer value is when
+;;; looking in from another thread?)
(defun scrub-control-stack ()
- #!+sb-doc
- "Zero the unused portion of the control stack so that old objects are not
- kept alive because of uninitialized stack variables."
- ;; FIXME: Why do we need to do this instead of just letting GC read
- ;; the stack pointer and avoid messing with the unused portion of
- ;; the control stack? (Is this a multithreading thing where there's
- ;; one control stack and stack pointer per thread, and it might not
- ;; be easy to tell what a thread's stack pointer value is when
- ;; looking in from another thread?)
(declare (optimize (speed 3) (safety 0))
(values (unsigned-byte 20))) ; FIXME: DECLARE VALUES?
(look (sap+ ptr bytes-per-scrub-unit) 0 count))
(t
(setf (sap-ref-32 ptr offset) 0)
- (scrub ptr (+ offset sb!vm:word-bytes) count))))
+ (scrub ptr (+ offset sb!vm:n-word-bytes) count))))
(look (ptr offset count)
(declare (type system-area-pointer ptr)
(type (unsigned-byte 16) offset)
(cond ((= offset bytes-per-scrub-unit)
count)
((zerop (sap-ref-32 ptr offset))
- (look ptr (+ offset sb!vm:word-bytes) count))
+ (look ptr (+ offset sb!vm:n-word-bytes) count))
(t
- (scrub ptr offset (+ count sb!vm:word-bytes))))))
+ (scrub ptr offset (+ count sb!vm:n-word-bytes))))))
(let* ((csp (sap-int (sb!c::control-stack-pointer-sap)))
(initial-offset (logand csp (1- bytes-per-scrub-unit))))
(declare (type (unsigned-byte 32) csp))
(scrub (int-sap (- csp initial-offset))
- (* (floor initial-offset sb!vm:word-bytes) sb!vm:word-bytes)
+ (* (floor initial-offset sb!vm:n-word-bytes) sb!vm:n-word-bytes)
0)))
#!+x86 ;; (Stack grows downwards.)
(type (unsigned-byte 16) offset)
(type (unsigned-byte 20) count)
(values (unsigned-byte 20)))
- (let ((loc (int-sap (- (sap-int ptr) (+ offset sb!vm:word-bytes)))))
+ (let ((loc (int-sap (- (sap-int ptr) (+ offset sb!vm:n-word-bytes)))))
(cond ((= offset bytes-per-scrub-unit)
(look (int-sap (- (sap-int ptr) bytes-per-scrub-unit))
0 count))
(t ;; need to fix bug in %SET-STACK-REF
(setf (sap-ref-32 loc 0) 0)
- (scrub ptr (+ offset sb!vm:word-bytes) count)))))
+ (scrub ptr (+ offset sb!vm:n-word-bytes) count)))))
(look (ptr offset count)
(declare (type system-area-pointer ptr)
(type (unsigned-byte 16) offset)
(cond ((= offset bytes-per-scrub-unit)
count)
((zerop (sb!kernel::get-lisp-obj-address (stack-ref loc 0)))
- (look ptr (+ offset sb!vm:word-bytes) count))
+ (look ptr (+ offset sb!vm:n-word-bytes) count))
(t
- (scrub ptr offset (+ count sb!vm:word-bytes)))))))
+ (scrub ptr offset (+ count sb!vm:n-word-bytes)))))))
(let* ((csp (sap-int (sb!c::control-stack-pointer-sap)))
(initial-offset (logand csp (1- bytes-per-scrub-unit))))
(declare (type (unsigned-byte 32) csp))
(scrub (int-sap (+ csp initial-offset))
- (* (floor initial-offset sb!vm:word-bytes) sb!vm:word-bytes)
+ (* (floor initial-offset sb!vm:n-word-bytes) sb!vm:n-word-bytes)
0))))
\f
;;;; the default toplevel function
-;;; FIXME: Most stuff below here can probably be byte-compiled.
-
(defvar / nil
#!+sb-doc
"a list of all the values returned by the most recent top-level EVAL")
projects / sbcl.git / blobdiff