From: Stephen Adams <edu/mit/csail/zurich/adams>
Date: Thu, 15 Dec 1994 03:02:45 +0000 (+0000)
Subject: Moved compiler statistics to own file.
X-Git-Tag: 20090517-FFI~6877
X-Git-Url: https://birchwood-abbey.net/git?a=commitdiff_plain;h=8c61c9eccbed27a6ccdec8f039eaad94198b4bb6;p=mit-scheme.git

Moved compiler statistics to own file.
---

diff --git a/v8/src/compiler/base/utils.scm b/v8/src/compiler/base/utils.scm
index 6131748a2..83ada6a7b 100644
--- a/v8/src/compiler/base/utils.scm
+++ b/v8/src/compiler/base/utils.scm
@@ -1,6 +1,6 @@
 #| -*-Scheme-*-
 
-$Id: utils.scm,v 1.3 1994/12/15 01:28:15 adams Exp $
+$Id: utils.scm,v 1.4 1994/12/15 03:02:45 adams Exp $
 
 Copyright (c) 1987-1994 Massachusetts Institute of Technology
 
@@ -389,177 +389,14 @@ MIT in each case. |#
 	  (else
 	   (loop (cdr l) yes (cons (car l) no))))))
 
-;; Statistics gathering machinery
-;;
-;; (compiler:reset-statistics!)
-;; (compiler:display-statistics)
-;; (sample/1 '(name type [parameters]) datum)
-;; (sample/2 '(name type [parameters]) datum1 datum2)
-
-
-(define *compiler-statistics-enabled?* #T)
-(define *compiler-statistics* (make-eq-hash-table))
-
-(define (compiler:reset-statistics!)
-  (set! *compiler-statistics* (make-eq-hash-table))
-  unspecific)
-
-(define-structure
-    (compiler-statistic
-     (conc-name compiler-statistic/))
-  sample
-  display)
-
-(define (compiler:display-statistics)
-  (for-each (lambda (name.statistic)
-	      (newline) (newline)
-	      ((compiler-statistic/display (cdr name.statistic))))
-	    (sort
-	     (hash-table->alist *compiler-statistics*)
-	     (lambda (pair1 pair2)
-	       (symbol<? (car pair1) (car pair2))))))
+;; Integrated procedures from Statistics gathering machinery
 
 (define-integrable (sample/1 statistic datum)
-  (if *compiler-statistics-enabled?*
+  (if compiler:enable-statistics?
       (sample/1/really statistic datum)
       unspecific))
 
 (define-integrable (sample/2 statistic datum1 datum2)
-  (if *compiler-statistics-enabled?*
+  (if compiler:enable-statistics?
       (sample/2/really statistic datum1 datum2)
       unspecific))
-
-(define (sample statistic . data)
-  (cond ((find-statistic statistic)
-	 => (lambda (stat)
-	      (apply (compiler-statistic/sample stat) data)
-	      datum))	 
-	(else
-	 (define-compiler-statistic (length data) statistic)
-	 (warn "SAMPLE should be replaced with call to SAMPLE/1 or SAMPLE/2"
-	       `(sample ,statistic ...))
-	 (apply sample/1/really statistic data))))
-
-(define (sample/1/really statistic datum)
-  (cond ((find-statistic statistic)
-	 => (lambda (stat)
-	      ((compiler-statistic/sample stat) datum)))
-	(else
-	 (define-compiler-statistic 1 statistic)
-	 (sample/1/really statistic datum))))
-
-(define (sample/2/really statistic datum1 datum2)
-  (cond ((find-statistic statistic)
-	 => (lambda (stat)
-	      ((compiler-statistic/sample stat) datum1 datum2)))
-	(else
-	 (define-compiler-statistic 2 statistic)
-	 (sample/2/really statistic datum1 datum2))))
-
-(define-integrable (find-statistic specification)
-  (if (pair? specification)
-      (hash-table/get *compiler-statistics* (car specification) #F)
-      #F))
-
-(define (define-compiler-statistic arity specification)
-  arity					; ignored
-  (if (not (and (pair? specification)
-		(pair? (cdr specification))))
-      (error "Illegal compiler-statistic specification:" specification))
-  (let ((name (first specification))
-	(type (second specification)))
-    (cond ((hash-table/get *compiler-statistic-types* type #F)
-	   => (lambda (maker)
-		(let ((statistic  (apply maker specification)))
-		  (hash-table/put! *compiler-statistics* name statistic))))
-	  (else
-	   (error "Unknown compiler-statistic type:" type specification)))))
-
-(define *compiler-statistic-types* (make-eq-hash-table))
-
-(define (define-statistic-type name maker)
-  (hash-table/put! *compiler-statistic-types* name maker))
-
-
-(define-statistic-type 'COUNT
-  (lambda (name type)
-    (let ((count 0))
-      (define (sample datum)
-	(set! count (+ count datum))
-	unspecific)
-      (define (print)
-	(define (say . stuff) (for-each display stuff))
-	(say name  " " type "   "  count))
-      (make-compiler-statistic sample print))))
-
-
-(define-statistic-type 'AVERAGE
-  (lambda (name type)
-    (let ((n   0)
-	  (sum 0))
-      (define (sample datum)
-	(set! n (+ n 1))
-	(set! sum (+ sum datum))
-	unspecific)
-      (define (print)
-	(define (say . stuff) (for-each display stuff))
-	(say name  " " type "   ")
-	(say " n = "  n  "   sum = "  sum  "   mean = " (/ sum n)))
-      (make-compiler-statistic sample print))))
-
-(define-statistic-type 'HISTOGRAM
-  (lambda (name type #!optional method)
-
-    (define (key<? u v)
-      (cond ((and (number? u) (number? v))
-	     (< u v))
-	    ((number? u) #T)
-	    ((number? v) #F)
-	    ((< (object-type u) (object-type v))
-	     #T)
-	    ((> (object-type u) (object-type v))
-	     #F)
-	    ((and (symbol? u) (symbol? v))
-	     (symbol<? u v))
-	    ((and (string? u) (string? v))
-	     (string<? u v))
-	    (else '(DONT KNOW))))
-
-    (define (pp-alist alist)
-      (define (say . stuff) (for-each display stuff))
-      (say name  " "  type  "   total: "  (reduce + 0 (map cdr alist))
-	   "   (datum . count):")
-      (newline)
-      (pp alist (current-output-port) #F 4))
-
-    (define (make-hash-table-histogram)
-      (let ((samples  (make-eqv-hash-table)))
-	(define (sample datum)
-	  (hash-table/put! samples datum
-			   (+ (hash-table/get samples datum 0) 1)))
-	(define (print)
-	  (pp-alist (sort (hash-table->alist samples)
-			  (lambda (u v) (key<? (car u) (car v))))))
-	(make-compiler-statistic sample print)))
-    
-    (define (make-vector-histogram)
-      (let ((samples  (vector)))
-	(define (sample datum)
-	  (if (>= datum (vector-length samples))
-	      (set! samples (vector-grow samples (+ 1 datum))))
-	  (vector-set! samples datum
-		       (+ 1 (or (vector-ref samples datum) 0))))
-	(define (print)
-	  (pp-alist (list-transform-positive
-			(vector->list
-			 (make-initialized-vector (vector-length samples)
-			   (lambda (i) (cons i (vector-ref samples i)))))
-		      cdr)))
-	(make-compiler-statistic sample print)))
-    
-    (let ((method (if (default-object? method) 'HASH-TABLE method)))
-      (case method
-	((HASH-TABLE HASH)  (make-hash-table-histogram))
-	((VECTOR)           (make-vector-histogram))
-	(else
-	 (error "Unknown histogram method:" method `(,name ,type ,method)))))))