src/impl-lispworks.lisp

   1 ;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; 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 LispWorks Multiprocessing interface can be found at
  12 ;;; http://www.lispworks.com/documentation/lw445/LWUG/html/lwuser-156.htm
  13
  14 (mp:initialize-multiprocessing)
  15
  16 ;;; Thread Creation
  17
  18 (defun %make-thread (function name)
  19   (mp:process-run-function name nil function))
  20
  21 (defun current-thread ()
  22   mp:*current-process*)
  23
  24 (defun threadp (object)
  25   (typep object 'mp:process))
  26
  27 (defun thread-name (thread)
  28   (mp:process-name thread))
  29
  30 ;;; Resource contention: locks and recursive locks
  31
  32 (defun make-lock (&optional name)
  33   (mp:make-lock :name (or name "Anonymous lock")))
  34
  35 (defun acquire-lock (lock &optional (wait-p t))
  36   (mp:process-lock lock nil
  37                    (cond ((null wait-p)         0)
  38                          ((numberp wait-p) wait-p)
  39                          (t                   nil))))
  40
  41 (defun release-lock (lock)
  42   (mp:process-unlock lock))
  43
  44 (defmacro with-lock-held ((place) &body body)
  45   `(mp:with-lock (,place) ,@body))
  46
  47 ;;; Resource contention: condition variables
  48
  49 (defun thread-yield ()
  50   (mp:process-allow-scheduling))
  51
  52 ;;; Introspection/debugging
  53
  54 (defun all-threads ()
  55   (mp:list-all-processes))
  56
  57 (defun interrupt-thread (thread function)
  58   (mp:process-interrupt thread function))
  59
  60 (defun destroy-thread (thread)
  61   (signal-error-if-current-thread thread)
  62   (mp:process-kill thread))
  63
  64 (defun thread-alive-p (thread)
  65   (mp:process-alive-p thread))
  66
  67 (defun join-thread (thread)
  68   (mp:process-wait (format nil "Waiting for thread ~A to complete" thread)
  69                    (complement #'mp:process-alive-p) thread))
  70
  71 (mark-supported)