X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fearly-c.lisp;h=877d2c8fc8eb61cfd4b27c0d2cd94886aff1e572;hb=95f17ca63742f8c164309716b35bc25545a849a6;hp=43d22da1d04d5a8eb0b3d5dbba2bda5a101fdcae;hpb=ff92598854bf7cae8d57fe49cef4d9a98e1ab345;p=sbcl.git diff --git a/src/compiler/early-c.lisp b/src/compiler/early-c.lisp index 43d22da..877d2c8 100644 --- a/src/compiler/early-c.lisp +++ b/src/compiler/early-c.lisp @@ -16,33 +16,19 @@ (in-package "SB!C") ;;; ANSI limits on compilation -(def!constant sb!xc:call-arguments-limit most-positive-fixnum +(def!constant sb!xc:call-arguments-limit sb!xc:most-positive-fixnum #!+sb-doc "The exclusive upper bound on the number of arguments which may be passed to a function, including &REST args.") -(def!constant sb!xc:lambda-parameters-limit most-positive-fixnum +(def!constant sb!xc:lambda-parameters-limit sb!xc:most-positive-fixnum #!+sb-doc "The exclusive upper bound on the number of parameters which may be specifed in a given lambda list. This is actually the limit on required and &OPTIONAL parameters. With &KEY and &AUX you can get more.") -(def!constant sb!xc:multiple-values-limit most-positive-fixnum +(def!constant sb!xc:multiple-values-limit sb!xc:most-positive-fixnum #!+sb-doc "The exclusive upper bound on the number of multiple VALUES that you can return.") - -(defconstant-eqx sb!xc:lambda-list-keywords - '(&allow-other-keys - &aux - &body - &environment - &key - &more - &optional - &rest - &whole) - #'equal - #!+sb-doc - "symbols which are magical in a lambda list") ;;;; cross-compiler-only versions of CL special variables, so that we ;;;; don't have weird interactions with the host compiler @@ -86,6 +72,12 @@ (defvar *constants*) (declaim (type hash-table *constants*)) +;;; *ALLOW-INSTRUMENTING* controls whether we should allow the +;;; insertion of instrumenting code (like a (CATCH ...)) around code +;;; to allow the debugger RETURN and STEP commands to function (we +;;; disallow it for internal stuff). +(defvar *allow-instrumenting*) + ;;; miscellaneous forward declarations (defvar *code-segment*) #!+sb-dyncount (defvar *collect-dynamic-statistics*) @@ -96,7 +88,7 @@ (defvar *compiler-style-warning-count*) (defvar *compiler-note-count*) (defvar *compiler-trace-output*) -(defvar *constraint-number*) +(defvar *constraint-universe*) (defvar *count-vop-usages*) (defvar *current-path*) (defvar *current-component*) @@ -117,11 +109,29 @@ (defvar *trace-table*) (defvar *undefined-warnings*) (defvar *warnings-p*) - -;;; This lock is seized in the compiler, and related areas: the -;;; compiler is not presently thread-safe -(defvar *big-compiler-lock* - (sb!thread:make-mutex :name "big compiler lock")) +(defvar *lambda-conversions*) + +(defvar *stack-allocate-dynamic-extent* t + "If true (the default), the compiler respects DYNAMIC-EXTENT declarations +and stack allocates otherwise inaccessible parts of the object whenever +possible. Potentially long (over one page in size) vectors are, however, not +stack allocated except in zero SAFETY code, as such a vector could overflow +the stack without triggering overflow protection.") + +(!begin-collecting-cold-init-forms) +;;; This lock is seized in the compiler, and related areas -- like the +;;; classoid/layout/class system. +(defvar *world-lock*) +(!cold-init-forms + (setf *world-lock* (sb!thread:make-mutex :name "World Lock"))) +(!defun-from-collected-cold-init-forms !world-lock-cold-init) + +(defmacro with-world-lock (() &body body) + `(sb!thread:with-recursive-lock (*world-lock*) + ,@body)) + +(declaim (type fixnum *compiler-sset-counter*)) +(defvar *compiler-sset-counter* 0) ;;; unique ID for the next object created (to let us track object ;;; identity even across GC, useful for understanding weird compiler @@ -132,7 +142,7 @@ (defvar *object-id-counter* 0) (defun new-object-id () (prog1 - *object-id-counter* + *object-id-counter* (incf *object-id-counter*)))) ;;;; miscellaneous utilities @@ -141,16 +151,16 @@ ;;; benefit of the compiler, but it's sometimes called from stuff like ;;; type-defining code which isn't logically part of the compiler. (declaim (ftype (function ((or symbol cons) keyword) (values)) - note-name-defined)) + note-name-defined)) (defun note-name-defined (name kind) ;; We do this BOUNDP check because this function can be called when ;; not in a compilation unit (as when loading top level forms). (when (boundp '*undefined-warnings*) (setq *undefined-warnings* - (delete-if (lambda (x) - (and (equal (undefined-warning-name x) name) - (eq (undefined-warning-kind x) kind))) - *undefined-warnings*))) + (delete-if (lambda (x) + (and (equal (undefined-warning-name x) name) + (eq (undefined-warning-kind x) kind))) + *undefined-warnings*))) (values)) ;;; to be called when a variable is lexically bound @@ -168,63 +178,78 @@ ;; and then we happen to compile bar.lisp before foo.lisp. (when (looks-like-name-of-special-var-p symbol) ;; FIXME: should be COMPILER-STYLE-WARNING? - (style-warn "using the lexical binding of the symbol ~S, not the~@ -dynamic binding, even though the symbol name follows the usual naming~@ -convention (names like *FOO*) for special variables" symbol)) + (style-warn 'sb!kernel:asterisks-around-lexical-variable-name + :format-control + "using the lexical binding of the symbol ~S, not the~@ + dynamic binding" + :format-arguments (list symbol))) (values)) -;;; Hacky (duplicating machinery found elsewhere because this function -;;; turns out to be on a critical path in the compiler) shorthand for -;;; creating debug names from source names or other stems, e.g. -;;; -;;; (DEBUG-NAMIFY "FLET " SOURCE-NAME) -> "FLET FOO:BAR" -;;; (DEBUG-NAMIFY "top level form " FORM) -> "top level form (QUUX :FOO)" -;;; -;;; If ALT is given it must be a string -- it is then used in place of -;;; either HEAD or TAIL if either of them is EQ to SB-C::.ANONYMOUS. -;;; -(declaim (inline debug-namify)) -(defun debug-namify (head tail &optional alt) - (declare (type (or null string) alt)) - (flet ((symbol-debug-name (symbol) - ;; KLUDGE: (OAOOM warning) very much akin to OUTPUT-SYMBOL. - (if (and alt (eq '.anonymous. symbol)) - alt - (let ((package (symbol-package symbol)) - (name (symbol-name symbol))) - (cond - ((eq package *keyword-package*) - (concatenate 'string ":" name)) - ((eq package *cl-package*) - name) - ((null package) - (concatenate 'string "#:" name)) - (t - (multiple-value-bind (symbol status) - (find-symbol name package) - (declare (ignore symbol)) - (concatenate 'string - (package-name package) - (if (eq status :external) ":" "::") - name)))))))) - (cond ((and (stringp head) (stringp tail)) - (concatenate 'string head tail)) - ((and (stringp head) (symbolp tail)) - (concatenate 'string head (symbol-debug-name tail))) - ((and (symbolp head) (stringp tail)) - (concatenate 'string (symbol-debug-name head) tail)) - (t - (macrolet ((out (obj s) - `(typecase ,obj - (string (write-string ,obj ,s)) - (symbol (write-string (symbol-debug-name ,obj) ,s)) - (t (prin1 ,obj ,s))))) - (with-standard-io-syntax - (let ((*print-readably* nil) - (*print-pretty* nil) - (*package* *cl-package*) - (*print-length* 3) - (*print-level* 2)) - (with-output-to-string (s) - (out head s) - (out tail s))))))))) +(def!struct (debug-name-marker (:make-load-form-fun dump-debug-name-marker) + (:print-function print-debug-name-marker))) + +(defvar *debug-name-level* 4) +(defvar *debug-name-length* 12) +(defvar *debug-name-punt*) +(defvar *debug-name-sharp*) +(defvar *debug-name-ellipsis*) + +(eval-when (:compile-toplevel :load-toplevel :execute) + (defun dump-debug-name-marker (marker &optional env) + (declare (ignore env)) + (cond ((eq marker *debug-name-sharp*) + `(if (boundp '*debug-name-sharp*) + *debug-name-sharp* + (make-debug-name-marker))) + ((eq marker *debug-name-ellipsis*) + `(if (boundp '*debug-name-ellipsis*) + *debug-name-ellipsis* + (make-debug-name-marker))) + (t + (warn "Dumping unknown debug-name marker.") + '(make-debug-name-marker))))) + +(defun print-debug-name-marker (marker stream level) + (declare (ignore level)) + (cond ((eq marker *debug-name-sharp*) + (write-char #\# stream)) + ((eq marker *debug-name-ellipsis*) + (write-string "..." stream)) + (t + (write-string "???" stream)))) + +(setf *debug-name-sharp* (make-debug-name-marker) + *debug-name-ellipsis* (make-debug-name-marker)) + +(defun debug-name (type thing) + (let ((*debug-name-punt* nil)) + (labels ((walk (x) + (typecase x + (cons + (if (plusp *debug-name-level*) + (let ((*debug-name-level* (1- *debug-name-level*))) + (do ((tail (cdr x) (cdr tail)) + (name (cons (walk (car x)) nil) + (cons (walk (car tail)) name)) + (n (1- *debug-name-length*) (1- n))) + ((or (not (consp tail)) + (not (plusp n)) + *debug-name-punt*) + (cond (*debug-name-punt* + (setf *debug-name-punt* nil) + (nreverse name)) + ((atom tail) + (nconc (nreverse name) (walk tail))) + (t + (setf *debug-name-punt* t) + (nconc (nreverse name) (list *debug-name-ellipsis*))))))) + *debug-name-sharp*)) + ((or symbol number string) + x) + (t + (type-of x))))) + (let ((name (list type (walk thing)))) + (when (legal-fun-name-p name) + (bug "~S is a legal function name, and cannot be used as a ~ + debug name." name)) + name))))