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797 regels
28 KiB
797 regels
28 KiB
;;;; -*- indent-tabs-mode: nil -*-
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;;;
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;;; swank-clasp.lisp --- SLIME backend for CLASP.
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;;;
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;;; This code has been placed in the Public Domain. All warranties
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;;; are disclaimed.
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;;;
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;;; Administrivia
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(defpackage swank/clasp
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(:use cl swank/backend))
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(in-package swank/clasp)
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#+(or)
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(eval-when (:compile-toplevel :load-toplevel :execute)
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(setq swank::*log-output* (open "/tmp/slime.log" :direction :output))
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(setq swank:*log-events* t))
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(defmacro slime-dbg (fmt &rest args)
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`(swank::log-event "slime-dbg ~a ~a~%" mp:*current-process* (apply #'format nil ,fmt ,args)))
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;; Hard dependencies.
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(eval-when (:compile-toplevel :load-toplevel :execute)
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(require 'sockets))
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;; Soft dependencies.
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(eval-when (:compile-toplevel :load-toplevel :execute)
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(when (probe-file "sys:profile.fas")
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(require :profile)
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(pushnew :profile *features*))
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(when (probe-file "sys:serve-event")
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(require :serve-event)
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(pushnew :serve-event *features*)))
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(declaim (optimize (debug 3)))
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;;; Swank-mop
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(eval-when (:compile-toplevel :load-toplevel :execute)
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(import-swank-mop-symbols :clos nil))
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(defimplementation gray-package-name ()
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"GRAY")
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;;;; TCP Server
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(defimplementation preferred-communication-style ()
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:spawn
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#| #+threads :spawn
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#-threads nil
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|#
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)
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(defun resolve-hostname (name)
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(car (sb-bsd-sockets:host-ent-addresses
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(sb-bsd-sockets:get-host-by-name name))))
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(defimplementation create-socket (host port &key backlog)
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(let ((socket (make-instance 'sb-bsd-sockets:inet-socket
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:type :stream
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:protocol :tcp)))
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(setf (sb-bsd-sockets:sockopt-reuse-address socket) t)
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(sb-bsd-sockets:socket-bind socket (resolve-hostname host) port)
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(sb-bsd-sockets:socket-listen socket (or backlog 5))
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socket))
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(defimplementation local-port (socket)
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(nth-value 1 (sb-bsd-sockets:socket-name socket)))
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(defimplementation close-socket (socket)
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(sb-bsd-sockets:socket-close socket))
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(defimplementation accept-connection (socket
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&key external-format
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buffering timeout)
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(declare (ignore timeout))
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(sb-bsd-sockets:socket-make-stream (accept socket)
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:output t
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:input t
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:buffering (ecase buffering
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((t) :full)
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((nil) :none)
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(:line :line))
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:element-type (if external-format
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'character
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'(unsigned-byte 8))
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:external-format external-format))
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(defun accept (socket)
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"Like socket-accept, but retry on EAGAIN."
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(loop (handler-case
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(return (sb-bsd-sockets:socket-accept socket))
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(sb-bsd-sockets:interrupted-error ()))))
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(defimplementation socket-fd (socket)
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(etypecase socket
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(fixnum socket)
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(two-way-stream (socket-fd (two-way-stream-input-stream socket)))
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(sb-bsd-sockets:socket (sb-bsd-sockets:socket-file-descriptor socket))
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(file-stream (si:file-stream-fd socket))))
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(defvar *external-format-to-coding-system*
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'((:latin-1
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"latin-1" "latin-1-unix" "iso-latin-1-unix"
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"iso-8859-1" "iso-8859-1-unix")
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(:utf-8 "utf-8" "utf-8-unix")))
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(defun external-format (coding-system)
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(or (car (rassoc-if (lambda (x) (member coding-system x :test #'equal))
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*external-format-to-coding-system*))
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(find coding-system (ext:all-encodings) :test #'string-equal)))
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(defimplementation find-external-format (coding-system)
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#+unicode (external-format coding-system)
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;; Without unicode support, CLASP uses the one-byte encoding of the
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;; underlying OS, and will barf on anything except :DEFAULT. We
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;; return NIL here for known multibyte encodings, so
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;; SWANK:CREATE-SERVER will barf.
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#-unicode (let ((xf (external-format coding-system)))
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(if (member xf '(:utf-8))
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nil
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:default)))
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;;;; Unix Integration
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;;; If CLASP is built with thread support, it'll spawn a helper thread
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;;; executing the SIGINT handler. We do not want to BREAK into that
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;;; helper but into the main thread, though. This is coupled with the
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;;; current choice of NIL as communication-style in so far as CLASP's
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;;; main-thread is also the Slime's REPL thread.
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#+clasp-working
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(defimplementation call-with-user-break-handler (real-handler function)
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(let ((old-handler #'si:terminal-interrupt))
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(setf (symbol-function 'si:terminal-interrupt)
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(make-interrupt-handler real-handler))
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(unwind-protect (funcall function)
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(setf (symbol-function 'si:terminal-interrupt) old-handler))))
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#+threads
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(defun make-interrupt-handler (real-handler)
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(let ((main-thread (find 'si:top-level (mp:all-processes)
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:key #'mp:process-name)))
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#'(lambda (&rest args)
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(declare (ignore args))
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(mp:interrupt-process main-thread real-handler))))
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#-threads
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(defun make-interrupt-handler (real-handler)
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#'(lambda (&rest args)
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(declare (ignore args))
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(funcall real-handler)))
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(defimplementation getpid ()
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(si:getpid))
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(defimplementation set-default-directory (directory)
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(ext:chdir (namestring directory)) ; adapts *DEFAULT-PATHNAME-DEFAULTS*.
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(default-directory))
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(defimplementation default-directory ()
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(namestring (ext:getcwd)))
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(defimplementation quit-lisp ()
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(core:quit))
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;;; Instead of busy waiting with communication-style NIL, use select()
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;;; on the sockets' streams.
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#+serve-event
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(progn
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(defun poll-streams (streams timeout)
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(let* ((serve-event::*descriptor-handlers*
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(copy-list serve-event::*descriptor-handlers*))
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(active-fds '())
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(fd-stream-alist
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(loop for s in streams
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for fd = (socket-fd s)
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collect (cons fd s)
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do (serve-event:add-fd-handler fd :input
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#'(lambda (fd)
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(push fd active-fds))))))
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(serve-event:serve-event timeout)
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(loop for fd in active-fds collect (cdr (assoc fd fd-stream-alist)))))
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(defimplementation wait-for-input (streams &optional timeout)
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(assert (member timeout '(nil t)))
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(loop
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(cond ((check-slime-interrupts) (return :interrupt))
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(timeout (return (poll-streams streams 0)))
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(t
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(when-let (ready (poll-streams streams 0.2))
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(return ready))))))
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) ; #+serve-event (progn ...
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#-serve-event
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(defimplementation wait-for-input (streams &optional timeout)
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(assert (member timeout '(nil t)))
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(loop
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(cond ((check-slime-interrupts) (return :interrupt))
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(timeout (return (remove-if-not #'listen streams)))
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(t
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(let ((ready (remove-if-not #'listen streams)))
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(if ready (return ready))
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(sleep 0.1))))))
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;;;; Compilation
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(defvar *buffer-name* nil)
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(defvar *buffer-start-position*)
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(defun condition-severity (condition)
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(etypecase condition
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(cmp:redefined-function-warning :redefinition)
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(style-warning :style-warning)
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(warning :warning)
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(reader-error :read-error)
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(error :error)))
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(defun condition-location (origin)
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(if (null origin)
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(make-error-location "No error location available")
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(let ((location (core:source-pos-info-filepos origin)))
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(if *buffer-name*
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(make-buffer-location *buffer-name*
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*buffer-start-position*
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location)
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(make-file-location
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(core:file-scope-pathname
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(core:file-scope origin))
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location)))))
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(defun signal-compiler-condition (condition origin)
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(signal 'compiler-condition
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:original-condition condition
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:severity (condition-severity condition)
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:message (princ-to-string condition)
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:location (condition-location origin)))
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(defun handle-compiler-condition (condition)
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;; First resignal warnings, so that outer handlers - which may choose to
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;; muffle this - get a chance to run.
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(when (typep condition 'warning)
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(signal condition))
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(signal-compiler-condition (cmp:deencapsulate-compiler-condition condition)
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(cmp:compiler-condition-origin condition)))
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(defimplementation call-with-compilation-hooks (function)
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(handler-bind
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(((or error warning) #'handle-compiler-condition))
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(funcall function)))
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(defimplementation swank-compile-file (input-file output-file
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load-p external-format
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&key policy)
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(declare (ignore policy))
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(format t "Compiling file input-file = ~a output-file = ~a~%" input-file output-file)
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;; Ignore the output-file and generate our own
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(let ((tmp-output-file (compile-file-pathname (si:mkstemp "TMP:clasp-swank-compile-file-"))))
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(format t "Using tmp-output-file: ~a~%" tmp-output-file)
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(multiple-value-bind (fasl warnings-p failure-p)
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(with-compilation-hooks ()
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(compile-file input-file :output-file tmp-output-file
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:external-format external-format))
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(values fasl warnings-p
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(or failure-p
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(when load-p
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(not (load fasl))))))))
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(defvar *tmpfile-map* (make-hash-table :test #'equal))
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(defun note-buffer-tmpfile (tmp-file buffer-name)
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;; EXT:COMPILED-FUNCTION-FILE below will return a namestring.
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(let ((tmp-namestring (namestring (truename tmp-file))))
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(setf (gethash tmp-namestring *tmpfile-map*) buffer-name)
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tmp-namestring))
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(defun tmpfile-to-buffer (tmp-file)
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(gethash tmp-file *tmpfile-map*))
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(defimplementation swank-compile-string (string &key buffer position filename policy)
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(declare (ignore policy))
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(with-compilation-hooks ()
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(let ((*buffer-name* buffer) ; for compilation hooks
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(*buffer-start-position* position))
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(let ((tmp-file (si:mkstemp "TMP:clasp-swank-tmpfile-"))
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(fasl-file)
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(warnings-p)
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(failure-p))
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(unwind-protect
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(with-open-file (tmp-stream tmp-file :direction :output
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:if-exists :supersede)
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(write-string string tmp-stream)
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(finish-output tmp-stream)
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(multiple-value-setq (fasl-file warnings-p failure-p)
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(let ((truename (or filename (note-buffer-tmpfile tmp-file buffer))))
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(compile-file tmp-file
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:source-debug-pathname (pathname truename)
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:source-debug-offset (1- position)))))
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(when fasl-file (load fasl-file))
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(when (probe-file tmp-file)
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(delete-file tmp-file))
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(when fasl-file
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(delete-file fasl-file)))
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(not failure-p)))))
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;;;; Documentation
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(defimplementation arglist (name)
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(multiple-value-bind (arglist foundp)
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(core:function-lambda-list name) ;; Uses bc-split
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(if foundp arglist :not-available)))
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(defimplementation function-name (f)
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(typecase f
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(generic-function (clos::generic-function-name f))
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(function (ext:compiled-function-name f))))
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;; FIXME
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(defimplementation macroexpand-all (form &optional env)
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(declare (ignore env))
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(macroexpand form))
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;;; modified from sbcl.lisp
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(defimplementation collect-macro-forms (form &optional environment)
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(let ((macro-forms '())
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(compiler-macro-forms '())
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(function-quoted-forms '()))
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(format t "In collect-macro-forms~%")
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(cmp:code-walk
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form environment
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:code-walker-function
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(lambda (form environment)
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(when (and (consp form)
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(symbolp (car form)))
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(cond ((eq (car form) 'function)
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(push (cadr form) function-quoted-forms))
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((member form function-quoted-forms)
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nil)
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((macro-function (car form) environment)
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(push form macro-forms))
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((not (eq form (core:compiler-macroexpand-1 form environment)))
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(push form compiler-macro-forms))))
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form))
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(values macro-forms compiler-macro-forms)))
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(defimplementation describe-symbol-for-emacs (symbol)
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(let ((result '()))
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(flet ((frob (type boundp)
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(when (funcall boundp symbol)
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(let ((doc (describe-definition symbol type)))
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(setf result (list* type doc result))))))
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(frob :VARIABLE #'boundp)
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(frob :FUNCTION #'fboundp)
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(frob :CLASS (lambda (x) (find-class x nil))))
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result))
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(defimplementation describe-definition (name type)
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(case type
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(:variable (documentation name 'variable))
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(:function (documentation name 'function))
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(:class (documentation name 'class))
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(t nil)))
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(defimplementation type-specifier-p (symbol)
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(or (subtypep nil symbol)
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(not (eq (type-specifier-arglist symbol) :not-available))))
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;;; Debugging
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(eval-when (:compile-toplevel :load-toplevel :execute)
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(import
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'(si::*break-env*
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si::*ihs-top*
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si::*ihs-current*
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si::*ihs-base*
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#+frs si::*frs-base*
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#+frs si::*frs-top*
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si::*tpl-commands*
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si::*tpl-level*
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#+frs si::frs-top
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si::ihs-top
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si::ihs-fun
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si::ihs-env
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#+frs si::sch-frs-base
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si::set-break-env
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si::set-current-ihs
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si::tpl-commands)))
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(defun make-invoke-debugger-hook (hook)
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(when hook
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#'(lambda (condition old-hook)
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;; Regard *debugger-hook* if set by user.
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(if *debugger-hook*
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nil ; decline, *DEBUGGER-HOOK* will be tried next.
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(funcall hook condition old-hook)))))
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(defimplementation install-debugger-globally (function)
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(setq *debugger-hook* function)
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(setq ext:*invoke-debugger-hook* (make-invoke-debugger-hook function))
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)
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(defimplementation call-with-debugger-hook (hook fun)
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(let ((*debugger-hook* hook)
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(ext:*invoke-debugger-hook* (make-invoke-debugger-hook hook)))
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(funcall fun))
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)
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(defvar *backtrace* '())
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;;; Commented out; it's not clear this is a good way of doing it. In
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;;; particular because it makes errors stemming from this file harder
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;;; to debug, and given the "young" age of CLASP's swank backend, that's
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;;; a bad idea.
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;; (defun in-swank-package-p (x)
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;; (and
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;; (symbolp x)
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;; (member (symbol-package x)
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;; (list #.(find-package :swank)
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;; #.(find-package :swank/backend)
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;; #.(ignore-errors (find-package :swank-mop))
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;; #.(ignore-errors (find-package :swank-loader))))
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;; t))
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;; (defun is-swank-source-p (name)
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;; (setf name (pathname name))
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;; (pathname-match-p
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;; name
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;; (make-pathname :defaults swank-loader::*source-directory*
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;; :name (pathname-name name)
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;; :type (pathname-type name)
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;; :version (pathname-version name))))
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;; (defun is-ignorable-fun-p (x)
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;; (or
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;; (in-swank-package-p (frame-name x))
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;; (multiple-value-bind (file position)
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;; (ignore-errors (si::bc-file (car x)))
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;; (declare (ignore position))
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;; (if file (is-swank-source-p file)))))
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(defimplementation call-with-debugging-environment (debugger-loop-fn)
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(declare (type function debugger-loop-fn))
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(let* ((*ihs-top* 0)
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(*ihs-current* *ihs-top*)
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#+frs (*frs-base* (or (sch-frs-base *frs-top* *ihs-base*) (1+ (frs-top))))
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#+frs (*frs-top* (frs-top))
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(*tpl-level* (1+ *tpl-level*)))
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(core:call-with-backtrace
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(lambda (raw-backtrace)
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(let ((*backtrace*
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(let ((backtrace (core::common-lisp-backtrace-frames
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raw-backtrace
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:gather-start-trigger
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(lambda (frame)
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(let ((function-name (core::backtrace-frame-function-name frame)))
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(and (symbolp function-name)
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(eq function-name 'core::universal-error-handler))))
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:gather-all-frames nil)))
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(unless backtrace
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(setq backtrace (core::common-lisp-backtrace-frames
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:gather-all-frames nil)))
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backtrace)))
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(declare (special *ihs-current*))
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(set-break-env)
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(set-current-ihs)
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(let ((*ihs-base* *ihs-top*))
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(funcall debugger-loop-fn)))))))
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(defimplementation compute-backtrace (start end)
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(subseq *backtrace* start
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(and (numberp end)
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(min end (length *backtrace*)))))
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(defun frame-name (frame)
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(let ((x (core::backtrace-frame-function-name frame)))
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(if (symbolp x)
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x
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(function-name x))))
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(defun frame-function (frame-number)
|
|
(let ((x (core::backtrace-frame-function-name (elt *backtrace* frame-number))))
|
|
(etypecase x
|
|
(symbol
|
|
(and (fboundp x)
|
|
(fdefinition x)))
|
|
(cons
|
|
(if (eq (car x) 'cl:setf)
|
|
(fdefinition x)
|
|
nil))
|
|
(function
|
|
x))))
|
|
|
|
(defimplementation print-frame (frame stream)
|
|
(if (core::backtrace-frame-arguments frame)
|
|
(format stream "(~a~{ ~s~})" (core::backtrace-frame-print-name frame)
|
|
(coerce (core::backtrace-frame-arguments frame) 'list))
|
|
(format stream "~a" (core::backtrace-frame-print-name frame))))
|
|
|
|
(defimplementation frame-source-location (frame-number)
|
|
(let* ((address (core::backtrace-frame-return-address (elt *backtrace* frame-number)))
|
|
(code-source-location (ext::code-source-position address)))
|
|
(format t "code-source-location ~s~%" code-source-location)
|
|
;; (core::source-info-backtrace *backtrace*)
|
|
(make-location (list :file (namestring (ext::code-source-line-source-pathname code-source-location)))
|
|
(list :line (ext::code-source-line-line-number code-source-location))
|
|
'(:align t))))
|
|
|
|
#+clasp-working
|
|
(defimplementation frame-catch-tags (frame-number)
|
|
(third (elt *backtrace* frame-number)))
|
|
|
|
(defun ihs-frame-id (frame-number)
|
|
(- (core:ihs-top) frame-number))
|
|
|
|
(defimplementation frame-locals (frame-number)
|
|
(let* ((frame (elt *backtrace* frame-number))
|
|
(env nil) ; no env yet
|
|
(locals (loop for x = env then (core:get-parent-environment x)
|
|
while x
|
|
nconc (loop for name across (core:environment-debug-names x)
|
|
for value across (core:environment-debug-values x)
|
|
collect (list :name name :id 0 :value value)))))
|
|
(nconc
|
|
(loop for arg across (core::backtrace-frame-arguments frame)
|
|
for i from 0
|
|
collect (list :name (intern (format nil "ARG~d" i) :cl-user)
|
|
:id 0
|
|
:value arg))
|
|
locals)))
|
|
|
|
(defimplementation frame-var-value (frame-number var-number)
|
|
(let* ((frame (elt *backtrace* frame-number))
|
|
(env nil)
|
|
(args (core::backtrace-frame-arguments frame)))
|
|
(if (< var-number (length args))
|
|
(svref args var-number)
|
|
(elt (frame-locals frame-number) var-number))))
|
|
|
|
(defimplementation disassemble-frame (frame-number)
|
|
(let ((fun (frame-function frame-number)))
|
|
(disassemble fun)))
|
|
|
|
(defimplementation eval-in-frame (form frame-number)
|
|
(let* ((frame (elt *backtrace* frame-number))
|
|
(raw-arg-values (coerce (core::backtrace-frame-arguments frame) 'list)))
|
|
(if (and (= (length raw-arg-values) 2) (core:vaslistp (car raw-arg-values)))
|
|
(let* ((arg-values (core:list-from-va-list (car raw-arg-values)))
|
|
(bindings (append (loop for i from 0 for value in arg-values collect `(,(intern (core:bformat nil "ARG%d" i) :cl-user) ',value))
|
|
(list (list (intern "NEXT-METHODS" :cl-user) (cadr raw-arg-values))))))
|
|
(eval
|
|
`(let (,@bindings) ,form)))
|
|
(let* ((arg-values raw-arg-values)
|
|
(bindings (loop for i from 0 for value in arg-values collect `(,(intern (core:bformat nil "ARG%d" i) :cl-user) ',value))))
|
|
(eval
|
|
`(let (,@bindings) ,form))))))
|
|
|
|
|
|
#+clasp-working
|
|
(defimplementation gdb-initial-commands ()
|
|
;; These signals are used by the GC.
|
|
#+linux '("handle SIGPWR noprint nostop"
|
|
"handle SIGXCPU noprint nostop"))
|
|
|
|
#+clasp-working
|
|
(defimplementation command-line-args ()
|
|
(loop for n from 0 below (si:argc) collect (si:argv n)))
|
|
|
|
|
|
;;;; Inspector
|
|
|
|
;;; FIXME: Would be nice if it was possible to inspect objects
|
|
;;; implemented in C.
|
|
|
|
|
|
;;;; Definitions
|
|
|
|
(defun make-file-location (file file-position)
|
|
;; File positions in CL start at 0, but Emacs' buffer positions
|
|
;; start at 1. We specify (:ALIGN T) because the positions comming
|
|
;; from CLASP point at right after the toplevel form appearing before
|
|
;; the actual target toplevel form; (:ALIGN T) will DTRT in that case.
|
|
(make-location `(:file ,(namestring (translate-logical-pathname file)))
|
|
`(:position ,(1+ file-position))
|
|
`(:align t)))
|
|
|
|
(defun make-buffer-location (buffer-name start-position &optional (offset 0))
|
|
(make-location `(:buffer ,buffer-name)
|
|
`(:offset ,start-position ,offset)
|
|
`(:align t)))
|
|
|
|
(defun translate-location (location)
|
|
(make-location (list :file (namestring (ext:source-location-pathname location)))
|
|
(list :position (ext:source-location-offset location))
|
|
'(:align t)))
|
|
|
|
(defimplementation find-definitions (name)
|
|
(loop for kind in ext:*source-location-kinds*
|
|
for locations = (ext:source-location name kind)
|
|
when locations
|
|
nconc (loop for location in locations
|
|
collect (list kind (translate-location location)))))
|
|
|
|
(defun source-location (object)
|
|
(let ((location (ext:source-location object t)))
|
|
(when location
|
|
(translate-location (car location)))))
|
|
|
|
(defimplementation find-source-location (object)
|
|
(or (source-location object)
|
|
(make-error-location "Source definition of ~S not found." object)))
|
|
|
|
|
|
;;;; Profiling
|
|
|
|
#+profile
|
|
(progn
|
|
|
|
(defimplementation profile (fname)
|
|
(when fname (eval `(profile:profile ,fname))))
|
|
|
|
(defimplementation unprofile (fname)
|
|
(when fname (eval `(profile:unprofile ,fname))))
|
|
|
|
(defimplementation unprofile-all ()
|
|
(profile:unprofile-all)
|
|
"All functions unprofiled.")
|
|
|
|
(defimplementation profile-report ()
|
|
(profile:report))
|
|
|
|
(defimplementation profile-reset ()
|
|
(profile:reset)
|
|
"Reset profiling counters.")
|
|
|
|
(defimplementation profiled-functions ()
|
|
(profile:profile))
|
|
|
|
(defimplementation profile-package (package callers methods)
|
|
(declare (ignore callers methods))
|
|
(eval `(profile:profile ,(package-name (find-package package)))))
|
|
) ; #+profile (progn ...
|
|
|
|
|
|
;;;; Threads
|
|
|
|
#+threads
|
|
(progn
|
|
(defvar *thread-id-counter* 0)
|
|
|
|
(defparameter *thread-id-map* (make-hash-table))
|
|
|
|
(defvar *thread-id-map-lock*
|
|
(mp:make-lock :name "thread id map lock"))
|
|
|
|
(defimplementation spawn (fn &key name)
|
|
(mp:process-run-function name fn))
|
|
|
|
(defimplementation thread-id (target-thread)
|
|
(block thread-id
|
|
(mp:with-lock (*thread-id-map-lock*)
|
|
;; Does TARGET-THREAD have an id already?
|
|
(maphash (lambda (id thread-pointer)
|
|
(let ((thread (si:weak-pointer-value thread-pointer)))
|
|
(cond ((not thread)
|
|
(remhash id *thread-id-map*))
|
|
((eq thread target-thread)
|
|
(return-from thread-id id)))))
|
|
*thread-id-map*)
|
|
;; TARGET-THREAD not found in *THREAD-ID-MAP*
|
|
(let ((id (incf *thread-id-counter*))
|
|
(thread-pointer (si:make-weak-pointer target-thread)))
|
|
(setf (gethash id *thread-id-map*) thread-pointer)
|
|
id))))
|
|
|
|
(defimplementation find-thread (id)
|
|
(mp:with-lock (*thread-id-map-lock*)
|
|
(let* ((thread-ptr (gethash id *thread-id-map*))
|
|
(thread (and thread-ptr (si:weak-pointer-value thread-ptr))))
|
|
(unless thread
|
|
(remhash id *thread-id-map*))
|
|
thread)))
|
|
|
|
(defimplementation thread-name (thread)
|
|
(mp:process-name thread))
|
|
|
|
(defimplementation thread-status (thread)
|
|
(if (mp:process-active-p thread)
|
|
"RUNNING"
|
|
"STOPPED"))
|
|
|
|
(defimplementation make-lock (&key name)
|
|
(mp:make-lock :name name :recursive t))
|
|
|
|
(defimplementation call-with-lock-held (lock function)
|
|
(declare (type function function))
|
|
(mp:with-lock (lock) (funcall function)))
|
|
|
|
(defimplementation current-thread ()
|
|
mp:*current-process*)
|
|
|
|
(defimplementation all-threads ()
|
|
(mp:all-processes))
|
|
|
|
(defimplementation interrupt-thread (thread fn)
|
|
(mp:interrupt-process thread fn))
|
|
|
|
(defimplementation kill-thread (thread)
|
|
(mp:process-kill thread))
|
|
|
|
(defimplementation thread-alive-p (thread)
|
|
(mp:process-active-p thread))
|
|
|
|
(defvar *mailbox-lock* (mp:make-lock :name "mailbox lock"))
|
|
(defvar *mailboxes* (list))
|
|
(declaim (type list *mailboxes*))
|
|
|
|
(defstruct (mailbox (:conc-name mailbox.))
|
|
thread
|
|
(mutex (mp:make-lock :name "SLIMELCK"))
|
|
(cvar (mp:make-condition-variable))
|
|
(queue '() :type list))
|
|
|
|
(defun mailbox (thread)
|
|
"Return THREAD's mailbox."
|
|
(mp:with-lock (*mailbox-lock*)
|
|
(or (find thread *mailboxes* :key #'mailbox.thread)
|
|
(let ((mb (make-mailbox :thread thread)))
|
|
(push mb *mailboxes*)
|
|
mb))))
|
|
|
|
(defimplementation wake-thread (thread)
|
|
(let* ((mbox (mailbox thread))
|
|
(mutex (mailbox.mutex mbox)))
|
|
(format t "About to with-lock in wake-thread~%")
|
|
(mp:with-lock (mutex)
|
|
(format t "In wake-thread~%")
|
|
(mp:condition-variable-broadcast (mailbox.cvar mbox)))))
|
|
|
|
(defimplementation send (thread message)
|
|
(let* ((mbox (mailbox thread))
|
|
(mutex (mailbox.mutex mbox)))
|
|
(swank::log-event "clasp.lisp: send message ~a mutex: ~a~%" message mutex)
|
|
(swank::log-event "clasp.lisp: (lock-owner mutex) -> ~a~%" (mp:lock-owner mutex))
|
|
(swank::log-event "clasp.lisp: (lock-count mutex) -> ~a~%" (mp:lock-count mutex))
|
|
(mp:with-lock (mutex)
|
|
(swank::log-event "clasp.lisp: in with-lock (lock-owner mutex) -> ~a~%" (mp:lock-owner mutex))
|
|
(swank::log-event "clasp.lisp: in with-lock (lock-count mutex) -> ~a~%" (mp:lock-count mutex))
|
|
(setf (mailbox.queue mbox)
|
|
(nconc (mailbox.queue mbox) (list message)))
|
|
(swank::log-event "clasp.lisp: send about to broadcast~%")
|
|
(mp:condition-variable-broadcast (mailbox.cvar mbox)))))
|
|
|
|
|
|
(defimplementation receive-if (test &optional timeout)
|
|
(slime-dbg "Entered receive-if")
|
|
(let* ((mbox (mailbox (current-thread)))
|
|
(mutex (mailbox.mutex mbox)))
|
|
(slime-dbg "receive-if assert")
|
|
(assert (or (not timeout) (eq timeout t)))
|
|
(loop
|
|
(slime-dbg "receive-if check-slime-interrupts")
|
|
(check-slime-interrupts)
|
|
(slime-dbg "receive-if with-lock")
|
|
(mp:with-lock (mutex)
|
|
(let* ((q (mailbox.queue mbox))
|
|
(tail (member-if test q)))
|
|
(when tail
|
|
(setf (mailbox.queue mbox) (nconc (ldiff q tail) (cdr tail)))
|
|
(return (car tail))))
|
|
(slime-dbg "receive-if when (eq")
|
|
(when (eq timeout t) (return (values nil t)))
|
|
(slime-dbg "receive-if condition-variable-timedwait")
|
|
(mp:condition-variable-wait (mailbox.cvar mbox) mutex) ; timedwait 0.2
|
|
(slime-dbg "came out of condition-variable-timedwait")
|
|
(core:check-pending-interrupts)))))
|
|
|
|
) ; #+threads (progn ...
|
|
|
|
|
|
(defmethod emacs-inspect ((object core:cxx-object))
|
|
(let ((encoded (core:encode object)))
|
|
(loop for (key . value) in encoded
|
|
append (list (string key) ": " (list :value value) (list :newline)))))
|