apiv1/impl-mcl.lisp

   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 (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 (deftype lock () 'ccl:lock)
  31
  32 (defun lock-p (object)
  33   (typep object 'ccl:lock))
  34
  35 (defun make-lock (&optional name)
  36   (ccl:make-lock (or name "Anonymous lock")))
  37
  38 (defun acquire-lock (lock &optional (wait-p t))
  39   (if wait-p
  40     (ccl:process-lock lock ccl:*current-process*)
  41     ;; this is broken, but it's better than a no-op
  42     (ccl:without-interrupts
  43      (when (null (ccl::lock.value lock))
  44        (ccl:process-lock lock ccl:*current-process*)))))
  45
  46 (defun release-lock (lock)
  47   (ccl:process-unlock lock))
  48
  49 (defmacro with-lock-held ((place) &body body)
  50   `(ccl:with-lock-grabbed (,place) ,@body))
  51
  52 (defun thread-yield ()
  53   (ccl:process-allow-schedule))
  54
  55 ;;; Introspection/debugging
  56
  57 (defun all-threads ()
  58   ccl:*all-processes*)
  59
  60 (defun interrupt-thread (thread function &rest args)
  61   (declare (dynamic-extent args))
  62   (apply #'ccl:process-interrupt thread function args))
  63
  64 (defun destroy-thread (thread)
  65   (signal-error-if-current-thread thread)
  66   (ccl:process-kill thread))
  67
  68 (mark-supported)