src/impl-mcl.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 (deftype thread ()
  12   'ccl::process)
  13
  14 ;;; Thread Creation
  15
  16 (defun %make-thread (function name)
  17   (ccl:process-run-function name function))
  18
  19 (defun current-thread ()
  20   ccl:*current-process*)
  21
  22 (defun threadp (object)
  23   (ccl::processp object))
  24
  25 (defun thread-name (thread)
  26   (ccl:process-name thread))
  27
  28 ;;; Resource contention: locks and recursive locks
  29
  30 (defun make-lock (&optional name)
  31   (ccl:make-lock (or name "Anonymous lock")))
  32
  33 (defun acquire-lock (lock &optional (wait-p t))
  34   (if wait-p
  35     (ccl:process-lock lock ccl:*current-process*)
  36     ;; this is broken, but it's better than a no-op
  37     (ccl:without-interrupts
  38      (when (null (ccl::lock.value lock))
  39        (ccl:process-lock lock ccl:*current-process*)))))
  40
  41 (defun release-lock (lock)
  42   (ccl:process-unlock lock))
  43
  44 (defmacro with-lock-held ((place) &body body)
  45   `(ccl:with-lock-grabbed (,place) ,@body))
  46
  47 (defun thread-yield ()
  48   (ccl:process-allow-schedule))
  49
  50 ;;; Introspection/debugging
  51
  52 (defun all-threads ()
  53   ccl:*all-processes*)
  54
  55 (defun interrupt-thread (thread function &rest args)
  56   (declare (dynamic-extent args))
  57   (apply #'ccl:process-interrupt thread function args))
  58
  59 (defun destroy-thread (thread)
  60   (signal-error-if-current-thread thread)
  61   (ccl:process-kill thread))
  62
  63 (mark-supported)