0.8.8.21:

[sbcl.git] / src / compiler / early-c.lisp

diff --git a/src/compiler/early-c.lisp b/src/compiler/early-c.lisp
index a98ec19..6b793b7 100644 (file)
--- a/src/compiler/early-c.lisp
+++ b/src/compiler/early-c.lisp
@@ -16,16 +16,16 @@
 (in-package "SB!C")
 
 ;;; ANSI limits on compilation
-(defconstant sb!xc:call-arguments-limit most-positive-fixnum
+(def!constant sb!xc:call-arguments-limit most-positive-fixnum
   #!+sb-doc
   "The exclusive upper bound on the number of arguments which may be passed
   to a function, including &REST args.")
-(defconstant sb!xc:lambda-parameters-limit most-positive-fixnum
+(def!constant sb!xc:lambda-parameters-limit 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.")
-(defconstant sb!xc:multiple-values-limit most-positive-fixnum
+(def!constant sb!xc:multiple-values-limit most-positive-fixnum
   #!+sb-doc
   "The exclusive upper bound on the number of multiple VALUES that you can
   return.")
@@ -73,12 +73,12 @@
 (defvar *lexenv*)
 (declaim (type lexenv *lexenv*))
 
-;;; *FREE-VARIABLES* translates from the names of variables referenced
-;;; globally to the LEAF structures for them. *FREE-FUNCTIONS* is like
-;;; *FREE-VARIABLES*, only it deals with function names.
-(defvar *free-variables*)
-(defvar *free-functions*)
-(declaim (type hash-table *free-variables* *free-functions*))
+;;; *FREE-VARS* translates from the names of variables referenced
+;;; globally to the LEAF structures for them. *FREE-FUNS* is like
+;;; *FREE-VARS*, only it deals with function names.
+(defvar *free-vars*)
+(defvar *free-funs*)
+(declaim (type hash-table *free-vars* *free-funs*))
 
 ;;; We use the same CONSTANT structure to represent all equal anonymous
 ;;; constants. This hashtable translates from constants to the LEAFs that
@@ -107,7 +107,7 @@
 (defvar *event-info*)
 (defvar *event-note-threshold*)
 (defvar *failure-p*)
-(defvar *fixups*)
+(defvar *fixup-notes*)
 (defvar *in-pack*)
 (defvar *info-environment*)
 (defvar *lexenv*)
@@ -115,6 +115,23 @@
 (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"))
+
+;;; unique ID for the next object created (to let us track object
+;;; identity even across GC, useful for understanding weird compiler
+;;; bugs where something is supposed to be unique but is instead
+;;; exists as duplicate objects)
+#!+sb-show
+(progn
+  (defvar *object-id-counter* 0)
+  (defun new-object-id ()
+    (prog1
+       *object-id-counter*
+      (incf *object-id-counter*))))
 \f
 ;;;; miscellaneous utilities
 
@@ -125,7 +142,7 @@
                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).
+  ;; not in a compilation unit (as when loading top level forms).
   (when (boundp '*undefined-warnings*)
     (setq *undefined-warnings*
          (delete-if (lambda (x)
@@ -148,8 +165,25 @@
     ;;         (FOO 14)))
     ;; 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~@
+    ;; 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))
   (values))
+
+;;; shorthand for creating debug names from source names or other
+;;; stems, e.g.
+;;;   (DEBUG-NAMIFY "FLET ~S" SOURCE-NAME)
+;;;   (DEBUG-NAMIFY "top level form ~S" FORM)
+;;;
+;;; FIXME: This function seems to have a lot in common with
+;;; STRINGIFY-FORM, and perhaps there's some way to merge the two
+;;; functions.
+(declaim (ftype (sfunction (string &rest t) string) debug-namify))
+(defun debug-namify (format-string &rest format-arguments)
+  (with-standard-io-syntax
+   (let ((*print-readably* nil)
+         (*package* *cl-package*)
+         (*print-length* 3)
+         (*print-level* 2))
+     (apply #'format nil format-string format-arguments))))