src/lispworks.lisp

   1 #|
   2 Copyright 2006, 2007 Greg Pfeil
   3
   4 Distributed under the MIT license (see LICENSE file)
   5 |#
   6
   7 (in-package #:bordeaux-threads)
   8
   9 ;;; documentation on the LispWorks Multiprocessing interface can be found at
  10 ;;; http://www.lispworks.com/documentation/lw445/LWUG/html/lwuser-156.htm
  11
  12 (mp:initialize-multiprocessing)
  13
  14 ;;; Thread Creation
  15
  16 (defun make-thread (function &key name)
  17   (mp:process-run-function name nil function))
  18
  19 (defun current-thread ()
  20   mp:*current-process*)
  21
  22 (defun threadp (object)
  23   (typep object 'mp:process))
  24
  25 (defun thread-name (thread)
  26   (mp:process-name thread))
  27
  28 ;;; Resource contention: locks and recursive locks
  29
  30 (defun make-lock (&optional name)
  31   (mp:make-lock :name name))
  32
  33 (defun acquire-lock (lock &optional (wait-p t))
  34   (mp:process-lock lock nil (if wait-p
  35                                 (if (typep wait-p 'number) wait-p nil)
  36                                 0)))
  37
  38 (defun release-lock (lock)
  39   (mp:process-unlock lock))
  40
  41 ;;; Apparently this EVAL-WHEN is needed so that the macro is available
  42 ;;; when compiling condition-variables.lisp
  43 (eval-when (:compile-toplevel :load-toplevel :execute)
  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 (mark-supported)