\f
;;;; DYNAMIC-USAGE and friends
-(eval-when (:compile-toplevel :execute)
- (sb!xc:defmacro def-c-var-fun (lisp-fun c-var-name)
- `(defun ,lisp-fun ()
- (sb!alien:extern-alien ,c-var-name (sb!alien:unsigned 32)))))
-
#!-sb-fluid
(declaim (inline current-dynamic-space-start))
#!+gencgc
(defun current-dynamic-space-start () sb!vm:dynamic-space-start)
#!-gencgc
-(def-c-var-fun current-dynamic-space-start "current_dynamic_space")
+(defun current-dynamic-space-start ()
+ (sb!alien:extern-alien "current_dynamic_space" sb!alien:unsigned-long))
#!-sb-fluid
(declaim (inline dynamic-usage))
#!+gencgc
-(def-c-var-fun dynamic-usage "bytes_allocated")
+(defun dynamic-usage ()
+ (sb!alien:extern-alien "bytes_allocated" sb!alien:unsigned-long))
#!-gencgc
(defun dynamic-usage ()
(the (unsigned-byte 32)
(current-dynamic-space-start))))
(defun static-space-usage ()
- (- (* sb!vm:*static-space-free-pointer* sb!vm:n-word-bytes)
+ (- (ash sb!vm:*static-space-free-pointer* sb!vm:n-fixnum-tag-bits)
sb!vm:static-space-start))
(defun read-only-space-usage ()
- (- (* sb!vm::*read-only-space-free-pointer* sb!vm:n-word-bytes)
+ (- (ash sb!vm::*read-only-space-free-pointer* sb!vm:n-fixnum-tag-bits)
sb!vm:read-only-space-start))
(defun control-stack-usage ()
(defun gc-stop-the-world ())
(defun gc-start-the-world ()))
+#!+gencgc
+(progn
+ (sb!alien:define-alien-variable ("gc_logfile" %gc-logfile) (* char))
+ (defun (setf gc-logfile) (pathname)
+ "Use PATHNAME to log garbage collections. If non-null, the
+designated file is opened before and after each collection, and
+generation statistics are appended to it. To stop writing the log, use
+NIL as the pathname."
+ (let ((new (when pathname
+ (sb!alien:make-alien-string
+ (native-namestring (translate-logical-pathname pathname)
+ :as-file t))))
+ (old %gc-logfile))
+ (setf %gc-logfile new)
+ (when old
+ (sb!alien:free-alien old))))
+ (defun gc-logfile ()
+ "Return the name of the current GC logfile."
+ (let ((val %gc-logfile))
+ (when val
+ (native-pathname (cast val c-string)))))
+ (declaim (inline dynamic-space-size))
+ (defun dynamic-space-size ()
+ (sb!alien:extern-alien "dynamic_space_size" sb!alien:unsigned-long)))
\f
;;;; SUB-GC
;; Now, if GET-MUTEX did not cons, that would be enough.
;; Because it does, we need the :IN-PROGRESS bit above to
;; tell the runtime not to trigger gcs.
- (let ((sb!impl::*in-without-gcing* t)
- (sb!impl::*deadline* nil)
- (sb!impl::*deadline-seconds* nil))
- (sb!thread:with-mutex (*already-in-gc*)
- (let ((*gc-inhibit* t))
- (let ((old-usage (dynamic-usage))
- (new-usage 0))
- (unsafe-clear-roots)
- (gc-stop-the-world)
- (let ((start-time (get-internal-run-time)))
- (collect-garbage gen)
- (setf *gc-epoch* (cons nil nil))
- (incf *gc-run-time*
- (- (get-internal-run-time) start-time)))
- (setf *gc-pending* nil
- new-usage (dynamic-usage))
- #!+sb-thread
- (assert (not *stop-for-gc-pending*))
- (gc-start-the-world)
- ;; In a multithreaded environment the other threads
- ;; will see *n-b-f-o-p* change a little late, but
- ;; that's OK.
- (let ((freed (- old-usage new-usage)))
- ;; GENCGC occasionally reports negative here, but
- ;; the current belief is that it is part of the
- ;; normal order of things and not a bug.
- (when (plusp freed)
- (incf *n-bytes-freed-or-purified* freed)))))))
+ (sb!thread::without-thread-waiting-for (:already-without-interrupts t)
+ (let* ((sb!impl::*in-without-gcing* t)
+ (sb!impl::*deadline* nil)
+ (sb!impl::*deadline-seconds* nil))
+ (sb!thread:with-mutex (*already-in-gc*)
+ (let ((*gc-inhibit* t))
+ (let ((old-usage (dynamic-usage))
+ (new-usage 0))
+ (unsafe-clear-roots gen)
+ (gc-stop-the-world)
+ (let ((start-time (get-internal-run-time)))
+ (collect-garbage gen)
+ (setf *gc-epoch* (cons nil nil))
+ (let ((run-time (- (get-internal-run-time) start-time)))
+ ;; KLUDGE: Sometimes we see the second getrusage() call
+ ;; return a smaller value than the first, which can
+ ;; lead to *GC-RUN-TIME* to going negative, which in
+ ;; turn is a type-error.
+ (when (plusp run-time)
+ (incf *gc-run-time* run-time))))
+ (setf *gc-pending* nil
+ new-usage (dynamic-usage))
+ #!+sb-thread
+ (assert (not *stop-for-gc-pending*))
+ (gc-start-the-world)
+ ;; In a multithreaded environment the other threads
+ ;; will see *n-b-f-o-p* change a little late, but
+ ;; that's OK.
+ (let ((freed (- old-usage new-usage)))
+ ;; GENCGC occasionally reports negative here, but
+ ;; the current belief is that it is part of the
+ ;; normal order of things and not a bug.
+ (when (plusp freed)
+ (incf *n-bytes-freed-or-purified* freed))))))))
;; While holding the mutex we were protected from
;; SIG_STOP_FOR_GC and recursive GCs. Now, in order to
;; preserve the invariant (*GC-PENDING* ->
;; finalizers and after-gc hooks.
(when (sb!thread:thread-alive-p sb!thread:*current-thread*)
(when *allow-with-interrupts*
- (with-interrupts
- (run-pending-finalizers)
- (call-hooks "after-GC" *after-gc-hooks* :on-error :warn)))))
+ (sb!thread::without-thread-waiting-for ()
+ (with-interrupts
+ (run-pending-finalizers)
+ (call-hooks "after-GC" *after-gc-hooks* :on-error :warn))))))
;;; This is the user-advertised garbage collection function.
(defun gc (&key (gen 0) (full nil) &allow-other-keys)
(define-alien-routine scrub-control-stack sb!alien:void)
-(defun unsafe-clear-roots ()
+(defun unsafe-clear-roots (gen)
+ #!-gencgc (declare (ignore gen))
;; KLUDGE: Do things in an attempt to get rid of extra roots. Unsafe
;; as having these cons more then we have space left leads to huge
;; badness.
;; Power cache of the bignum printer: drops overly large bignums and
;; removes duplicate entries.
(scrub-power-cache)
- ;; FIXME: CTYPE-OF-CACHE-CLEAR isn't thread-safe.
- #!-sb-thread
- (ctype-of-cache-clear))
-
+ ;; Clear caches depending on the generation being collected.
+ #!+gencgc
+ (cond ((eql 0 gen))
+ ((eql 1 gen)
+ (ctype-of-cache-clear))
+ (t
+ (drop-all-hash-caches)))
+ #!-gencgc
+ (drop-all-hash-caches))
\f
;;;; auxiliary functions
(number-of-gcs int)
(number-of-gcs-before-promotion int)
(cum-sum-bytes-allocated unsigned-long)
- (minimum-age-before-gc double)))
+ (minimum-age-before-gc double)
+ ;; `struct lutex *' or `void *', depending.
+ (lutexes (* char))))
#!+gencgc
(define-alien-variable generations
(defun ,(symbolicate "GENERATION-" slot) (generation)
#!+sb-doc
,doc
+ #!+gencgc
(declare (generation-index generation))
#!-gencgc
(declare (ignore generation))
#!-gencgc
(error "~S is a GENCGC only function and unavailable in this build"
- ',name)
+ ',slot)
#!+gencgc
(slot (deref generations generation) ',slot))
,@(when setfp
`((defun (setf ,(symbolicate "GENERATION-" slot)) (value generation)
+ #!+gencgc
(declare (generation-index generation))
#!-gencgc
(declare (ignore value generation))
#!-gencgc
(error "(SETF ~S) is a GENCGC only function and unavailable in this build"
- ',name)
+ ',slot)
#!+gencgc
(setf (slot (deref generations generation) ',slot) value)))))))
(def bytes-consed-between-gcs
Available on GENCGC platforms only.
Experimental: interface subject to change."
+ #!+gencgc
(declare (generation-index generation))
#!-gencgc (declare (ignore generation))
#!-gencgc
projects / sbcl.git / blobdiff