mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-30 20:00:19 +02:00
6c20a0b34b
* libguile/vm.h (struct scm_vm): Remove "time" and "clock" members. The time was bogusly measured, and the "clock" measured instructions retired, which is not a very useful measurement, and it was causing lots of memory accesses. Not that I have done a proper profile, though... (scm_vm_stats): Remove this procedure, which provided access to "time" and "clock". * libguile/vm.c: * libguile/vm-engine.h: * libguile/vm-engine.c: * libguile/vm-i-system.c: Adapt to scm_vm changes and scm_vm_stats removal. * module/system/repl/command.scm: * module/system/vm/vm.scm: Adapt to vm-stats removal by removing vm-stats from <repl>.
491 lines
15 KiB
Scheme
491 lines
15 KiB
Scheme
;;; Repl commands
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;; Copyright (C) 2001, 2009 Free Software Foundation, Inc.
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;; This library is free software; you can redistribute it and/or
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;; modify it under the terms of the GNU Lesser General Public
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;; License as published by the Free Software Foundation; either
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;; version 3 of the License, or (at your option) any later version.
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;;
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;; This library is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;; Lesser General Public License for more details.
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;;
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;; You should have received a copy of the GNU Lesser General Public
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;; License along with this library; if not, write to the Free Software
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;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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;; 02110-1301 USA
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;;; Code:
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(define-module (system repl command)
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#:use-module (system base syntax)
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#:use-module (system base pmatch)
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#:use-module (system base compile)
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#:use-module (system repl common)
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#:use-module (system vm objcode)
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#:use-module (system vm program)
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#:use-module (system vm vm)
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#:autoload (system base language) (lookup-language language-reader)
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#:autoload (system vm debug) (vm-debugger vm-backtrace)
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#:autoload (system vm trace) (vm-trace vm-trace-on vm-trace-off)
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#:autoload (system vm profile) (vm-profile)
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#:use-module (ice-9 format)
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#:use-module (ice-9 session)
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#:use-module (ice-9 documentation)
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#:use-module (ice-9 and-let-star)
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#:use-module (ice-9 rdelim)
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#:export (meta-command))
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;;;
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;;; Meta command interface
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;;;
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(define *command-table*
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'((help (help h) (apropos a) (describe d) (option o) (quit q))
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(module (module m) (import i) (load l) (binding b))
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(language (language L))
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(compile (compile c) (compile-file cc)
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(disassemble x) (disassemble-file xx))
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(profile (time t) (profile pr))
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(debug (backtrace bt) (debugger db) (trace tr) (step st))
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(system (gc) (statistics stat))))
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(define (group-name g) (car g))
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(define (group-commands g) (cdr g))
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;; Hack, until core can be extended.
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(define procedure-documentation
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(let ((old-definition procedure-documentation))
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(lambda (p)
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(if (program? p)
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(program-documentation p)
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(old-definition p)))))
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(define *command-module* (current-module))
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(define (command-name c) (car c))
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(define (command-abbrev c) (if (null? (cdr c)) #f (cadr c)))
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(define (command-procedure c) (module-ref *command-module* (command-name c)))
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(define (command-doc c) (procedure-documentation (command-procedure c)))
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(define (command-usage c)
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(let ((doc (command-doc c)))
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(substring doc 0 (string-index doc #\newline))))
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(define (command-summary c)
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(let* ((doc (command-doc c))
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(start (1+ (string-index doc #\newline))))
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(cond ((string-index doc #\newline start)
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=> (lambda (end) (substring doc start end)))
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(else (substring doc start)))))
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(define (lookup-group name)
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(assq name *command-table*))
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(define (lookup-command key)
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(let loop ((groups *command-table*) (commands '()))
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(cond ((and (null? groups) (null? commands)) #f)
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((null? commands)
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(loop (cdr groups) (cdar groups)))
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((memq key (car commands)) (car commands))
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(else (loop groups (cdr commands))))))
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(define (display-group group . opts)
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(format #t "~:(~A~) Commands [abbrev]:~2%" (group-name group))
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(for-each (lambda (c)
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(display-summary (command-usage c)
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(command-abbrev c)
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(command-summary c)))
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(group-commands group))
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(newline))
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(define (display-command command)
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(display "Usage: ")
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(display (command-doc command))
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(newline))
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(define (display-summary usage abbrev summary)
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(let ((abbrev (if abbrev (format #f "[,~A]" abbrev) "")))
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(format #t " ,~24A ~8@A - ~A\n" usage abbrev summary)))
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(define (read-datum repl)
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(read))
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(define read-line
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(let ((orig-read-line read-line))
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(lambda (repl)
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(orig-read-line))))
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(define (meta-command repl)
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(let ((command (read-datum repl)))
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(if (not (symbol? command))
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(user-error "Meta-command not a symbol: ~s" command))
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(let ((c (lookup-command command)))
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(if c
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((command-procedure c) repl)
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(user-error "Unknown meta command: ~A" command)))))
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(define-syntax define-meta-command
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(syntax-rules ()
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((_ (name repl (expression0 ...) . datums) docstring b0 b1 ...)
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(define (name repl)
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docstring
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(let* ((expression0
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(repl-reader ""
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(lambda args
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(let ((port (if (pair? args)
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(car args)
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(current-input-port))))
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((language-reader (repl-language repl))
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port (current-module))))))
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...)
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(apply (lambda datums b0 b1 ...)
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(let ((port (open-input-string (read-line repl))))
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(let lp ((out '()))
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(let ((x (read port)))
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(if (eof-object? x)
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(reverse out)
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(lp (cons x out))))))))))
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((_ (name repl . datums) docstring b0 b1 ...)
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(define-meta-command (name repl () . datums)
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docstring b0 b1 ...))))
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;;;
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;;; Help commands
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;;;
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(define-meta-command (help repl . args)
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"help
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help GROUP
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help [-c] COMMAND
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Gives help on the meta-commands available at the REPL.
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With one argument, tries to look up the argument as a group name, giving
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help on that group if successful. Otherwise tries to look up the
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argument as a command, giving help on the command.
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If there is a command whose name is also a group name, use the ,help
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-c COMMAND form to give help on the command instead of the group.
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Without any argument, a list of help commands and command groups
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are displayed."
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(pmatch args
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(()
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(display-group (lookup-group 'help))
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(display "Command Groups:\n\n")
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(display-summary "help all" #f "List all commands")
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(for-each (lambda (g)
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(let* ((name (symbol->string (group-name g)))
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(usage (string-append "help " name))
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(header (string-append "List " name " commands")))
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(display-summary usage #f header)))
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(cdr *command-table*))
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(newline)
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(display "Type `,COMMAND -h' to show documentation of each command.")
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(newline))
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((all)
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(for-each display-group *command-table*))
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((,group) (guard (lookup-group group))
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(display-group (lookup-group group)))
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((,command) (guard (lookup-command command))
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(display-command (lookup-command command)))
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((-c ,command) (guard (lookup-command command))
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(display-command (lookup-command command)))
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((,command)
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(user-error "Unknown command or group: ~A" command))
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((-c ,command)
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(user-error "Unknown command: ~A" command))
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(else
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(user-error "Bad arguments: ~A" args))))
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(define guile:apropos apropos)
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(define-meta-command (apropos repl regexp)
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"apropos REGEXP
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Find bindings/modules/packages."
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(guile:apropos (->string regexp)))
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(define-meta-command (describe repl (form))
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"describe OBJ
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Show description/documentation."
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(display (object-documentation (repl-eval repl (repl-parse repl form))))
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(newline))
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(define-meta-command (option repl . args)
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"option [KEY VALUE]
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List/show/set options."
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(pmatch args
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(()
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(for-each (lambda (key+val)
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(format #t "~A\t~A\n" (car key+val) (cdr key+val)))
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(repl-options repl)))
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((,key)
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(display (repl-option-ref repl key))
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(newline))
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((,key ,val)
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(repl-option-set! repl key val)
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(case key
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((trace)
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(let ((vm (repl-vm repl)))
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(if val
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(apply vm-trace-on vm val)
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(vm-trace-off vm))))))))
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(define-meta-command (quit repl)
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"quit
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Quit this session."
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(throw 'quit))
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;;;
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;;; Module commands
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;;;
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(define-meta-command (module repl . args)
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"module [MODULE]
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Change modules / Show current module."
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(pmatch args
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(() (puts (module-name (current-module))))
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((,mod-name) (guard (list? mod-name))
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(set-current-module (resolve-module mod-name)))
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(,mod-name (set-current-module (resolve-module mod-name)))))
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(define-meta-command (import repl . args)
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"import [MODULE ...]
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Import modules / List those imported."
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(let ()
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(define (use name)
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(let ((mod (resolve-interface name)))
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(if mod
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(module-use! (current-module) mod)
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(user-error "No such module: ~A" name))))
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(if (null? args)
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(for-each puts (map module-name (module-uses (current-module))))
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(for-each use args))))
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(define guile:load load)
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(define-meta-command (load repl file . opts)
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"load FILE
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Load a file in the current module.
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-f Load source file (see `compile')"
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(let ((file (->string file)))
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(if (memq #:f opts)
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(primitive-load file)
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(guile:load file))))
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(define-meta-command (binding repl)
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"binding
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List current bindings."
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(module-for-each (lambda (k v) (format #t "~23A ~A\n" k v))
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(current-module)))
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;;;
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;;; Language commands
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;;;
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(define-meta-command (language repl name)
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"language LANGUAGE
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Change languages."
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(set! (repl-language repl) (lookup-language name))
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(repl-welcome repl))
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;;;
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;;; Compile commands
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;;;
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(define-meta-command (compile repl (form) . opts)
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"compile FORM
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Generate compiled code.
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-e Stop after expanding syntax/macro
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-t Stop after translating into GHIL
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-c Stop after generating GLIL
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-O Enable optimization
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-D Add debug information"
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(let ((x (apply repl-compile repl (repl-parse repl form) opts)))
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(cond ((objcode? x) (guile:disassemble x))
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(else (repl-print repl x)))))
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(define guile:compile-file compile-file)
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(define-meta-command (compile-file repl file . opts)
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"compile-file FILE
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Compile a file."
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(guile:compile-file (->string file) #:opts opts))
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(define (guile:disassemble x)
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((@ (language assembly disassemble) disassemble) x))
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(define-meta-command (disassemble repl (form))
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"disassemble PROGRAM
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Disassemble a program."
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(guile:disassemble (repl-eval repl (repl-parse repl form))))
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(define-meta-command (disassemble-file repl file)
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"disassemble-file FILE
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Disassemble a file."
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(guile:disassemble (load-objcode (->string file))))
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;;;
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;;; Profile commands
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;;;
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(define-meta-command (time repl (form))
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"time FORM
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Time execution."
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(let* ((gc-start (gc-run-time))
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(tms-start (times))
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(result (repl-eval repl (repl-parse repl form)))
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(tms-end (times))
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(gc-end (gc-run-time)))
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(define (get proc start end)
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(exact->inexact (/ (- (proc end) (proc start)) internal-time-units-per-second)))
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(repl-print repl result)
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(display "clock utime stime cutime cstime gctime\n")
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(format #t "~5,2F ~5,2F ~5,2F ~6,2F ~6,2F ~6,2F\n"
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(get tms:clock tms-start tms-end)
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(get tms:utime tms-start tms-end)
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(get tms:stime tms-start tms-end)
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(get tms:cutime tms-start tms-end)
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(get tms:cstime tms-start tms-end)
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(get identity gc-start gc-end))
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result))
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(define-meta-command (profile repl form . opts)
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"profile FORM
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Profile execution."
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(apply vm-profile
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(repl-vm repl)
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(repl-compile repl (repl-parse repl form))
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opts))
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;;;
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;;; Debug commands
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;;;
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(define-meta-command (backtrace repl)
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"backtrace
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Display backtrace."
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(vm-backtrace (repl-vm repl)))
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(define-meta-command (debugger repl)
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"debugger
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Start debugger."
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(vm-debugger (repl-vm repl)))
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(define-meta-command (trace repl form . opts)
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"trace FORM
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Trace execution.
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-s Display stack
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-l Display local variables
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-b Bytecode level trace"
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(apply vm-trace (repl-vm repl)
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(repl-compile repl (repl-parse repl form))
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opts))
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(define-meta-command (step repl)
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"step FORM
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Step execution."
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(display "Not implemented yet\n"))
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;;;
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;;; System commands
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;;;
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(define guile:gc gc)
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(define-meta-command (gc repl)
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"gc
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Garbage collection."
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(guile:gc))
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(define-meta-command (statistics repl)
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"statistics
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Display statistics."
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(let ((this-tms (times))
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(this-gcs (gc-stats))
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(last-tms (repl-tm-stats repl))
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(last-gcs (repl-gc-stats repl)))
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;; GC times
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(let ((this-times (assq-ref this-gcs 'gc-times))
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(last-times (assq-ref last-gcs 'gc-times)))
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(display-diff-stat "GC times:" #t this-times last-times "times")
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(newline))
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;; Memory size
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(let ((this-cells (assq-ref this-gcs 'cells-allocated))
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(this-heap (assq-ref this-gcs 'cell-heap-size))
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(this-bytes (assq-ref this-gcs 'bytes-malloced))
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(this-malloc (assq-ref this-gcs 'gc-malloc-threshold)))
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(display-stat-title "Memory size:" "current" "limit")
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(display-stat "heap" #f this-cells this-heap "cells")
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(display-stat "malloc" #f this-bytes this-malloc "bytes")
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(newline))
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;; Cells collected
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(let ((this-marked (assq-ref this-gcs 'cells-marked))
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(last-marked (assq-ref last-gcs 'cells-marked))
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(this-swept (assq-ref this-gcs 'cells-swept))
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(last-swept (assq-ref last-gcs 'cells-swept)))
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(display-stat-title "Cells collected:" "diff" "total")
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(display-diff-stat "marked" #f this-marked last-marked "cells")
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(display-diff-stat "swept" #f this-swept last-swept "cells")
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(newline))
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;; GC time taken
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(let ((this-mark (assq-ref this-gcs 'gc-mark-time-taken))
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(last-mark (assq-ref last-gcs 'gc-mark-time-taken))
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(this-total (assq-ref this-gcs 'gc-time-taken))
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(last-total (assq-ref last-gcs 'gc-time-taken)))
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(display-stat-title "GC time taken:" "diff" "total")
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(display-time-stat "mark" this-mark last-mark)
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(display-time-stat "total" this-total last-total)
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(newline))
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;; Process time spent
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(let ((this-utime (tms:utime this-tms))
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(last-utime (tms:utime last-tms))
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(this-stime (tms:stime this-tms))
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(last-stime (tms:stime last-tms))
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(this-cutime (tms:cutime this-tms))
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(last-cutime (tms:cutime last-tms))
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(this-cstime (tms:cstime this-tms))
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(last-cstime (tms:cstime last-tms)))
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(display-stat-title "Process time spent:" "diff" "total")
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(display-time-stat "user" this-utime last-utime)
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(display-time-stat "system" this-stime last-stime)
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(display-time-stat "child user" this-cutime last-cutime)
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(display-time-stat "child system" this-cstime last-cstime)
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(newline))
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;; Save statistics
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;; Save statistics
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(set! (repl-tm-stats repl) this-tms)
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(set! (repl-gc-stats repl) this-gcs)))
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(define (display-stat title flag field1 field2 unit)
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(let ((str (format #f "~~20~AA ~~10@A /~~10@A ~~A~~%" (if flag "" "@"))))
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(format #t str title field1 field2 unit)))
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(define (display-stat-title title field1 field2)
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(display-stat title #t field1 field2 ""))
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(define (display-diff-stat title flag this last unit)
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(display-stat title flag (- this last) this unit))
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(define (display-time-stat title this last)
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(define (conv num)
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(format #f "~10,2F" (exact->inexact (/ num internal-time-units-per-second))))
|
||
(display-stat title #f (conv (- this last)) (conv this) "s"))
|
||
|
||
(define (display-mips-stat title this-time this-clock last-time last-clock)
|
||
(define (mips time clock)
|
||
(if (= time 0) "----" (format #f "~10,2F" (/ clock time 1000000.0))))
|
||
(display-stat title #f
|
||
(mips (- this-time last-time) (- this-clock last-clock))
|
||
(mips this-time this-clock) "mips"))
|