impl-clasp.lisp - clic - Clic is an command line interactive client for gopher written in Common LISP
 (HTM) git clone git://bitreich.org/clic/ git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws65d7roiv6bfj7d652fid.onion/clic/
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       impl-clasp.lisp (2703B)
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            1 ;;;; -*- indent-tabs-mode: nil -*-
            2 
            3 #|
            4 Copyright 2006, 2007 Greg Pfeil
            5 
            6 Distributed under the MIT license (see LICENSE file)
            7 |#
            8 
            9 (in-package #:bordeaux-threads)
           10 
           11 ;;; documentation on the ECL Multiprocessing interface can be found at
           12 ;;; http://ecls.sourceforge.net/cgi-bin/view/Main/MultiProcessing
           13 
           14 (deftype thread ()
           15   'mp:process)
           16 
           17 ;;; Thread Creation
           18 
           19 (defun %make-thread (function name)
           20   (mp:process-run-function name function bordeaux-threads:*default-special-bindings*))
           21 
           22 (defun current-thread ()
           23   mp:*current-process*)
           24 
           25 (defun threadp (object)
           26   (typep object 'mp:process))
           27 
           28 (defun thread-name (thread)
           29   (mp:process-name thread))
           30 
           31 ;;; Resource contention: locks and recursive locks
           32 
           33 (deftype lock () 'mp:mutex)
           34 
           35 (deftype recursive-lock ()
           36   '(and mp:mutex (satisfies mp:recursive-lock-p)))
           37 
           38 (defun lock-p (object)
           39   (typep object 'mp:mutex))
           40 
           41 (defun recursive-lock-p (object)
           42   (and (typep object 'mp:lock)
           43        (mp:recursive-lock-p object)))
           44 
           45 (defun make-lock (&optional name)
           46   (mp:make-lock :name (or name :anonymous)))
           47 
           48 (defun acquire-lock (lock &optional (wait-p t))
           49   (mp:get-lock lock wait-p))
           50 
           51 (defun release-lock (lock)
           52   (mp:giveup-lock lock))
           53 
           54 
           55 (defmacro with-lock-held ((place) &body body)
           56   `(mp:with-lock (,place) ,@body))
           57 
           58 (defun make-recursive-lock (&optional name)
           59   (mp:make-recursive-mutex (or name :anonymous-recursive-lock)))
           60 
           61 (defun acquire-recursive-lock (lock &optional (wait-p t))
           62   (mp:get-lock lock wait-p))
           63 
           64 (defun release-recursive-lock (lock)
           65   (mp:giveup-lock lock))
           66 
           67 (defmacro with-recursive-lock-held ((place) &body body)
           68   `(mp:with-lock (,place) ,@body))
           69 
           70 ;;; Resource contention: condition variables
           71 
           72 (defun make-condition-variable (&key name)
           73   (declare (ignore name))
           74   (mp:make-condition-variable))
           75 
           76 (defun condition-wait (condition-variable lock &key timeout)
           77   (if timeout
           78       (mp:condition-variable-timedwait condition-variable lock timeout)
           79       (mp:condition-variable-wait condition-variable lock))
           80   t)
           81 
           82 (defun condition-notify (condition-variable)
           83   (mp:condition-variable-signal condition-variable))
           84 
           85 (defun thread-yield ()
           86   (mp:process-yield))
           87 
           88 ;;; Introspection/debugging
           89 
           90 (defun all-threads ()
           91   (mp:all-processes))
           92 
           93 (defun interrupt-thread (thread function &rest args)
           94   (flet ((apply-function ()
           95            (if args
           96                (lambda () (apply function args))
           97                function)))
           98     (declare (dynamic-extent #'apply-function))
           99     (mp:interrupt-process thread (apply-function))))
          100 
          101 (defun destroy-thread (thread)
          102   (signal-error-if-current-thread thread)
          103   (mp:process-kill thread))
          104 
          105 (defun thread-alive-p (thread)
          106   (mp:process-active-p thread))
          107 
          108 (defun join-thread (thread)
          109   (mp:process-join thread))
          110 
          111 (mark-supported)