src/sbcl.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 SBCL Threads interface can be found at
  10 ;;; http://www.sbcl.org/manual/Threading.html
  11
  12 ;;; Thread Creation
  13
  14 (defun make-thread (function &key name)
  15   (sb-thread:make-thread function :name name))
  16
  17 (defun current-thread ()
  18   sb-thread:*current-thread*)
  19
  20 (defun threadp (object)
  21   (typep object 'sb-thread:thread))
  22
  23 (defun thread-name (thread)
  24   (sb-thread:thread-name thread))
  25
  26 ;;; Resource contention: locks and recursive locks
  27
  28 (defun make-lock (&optional name)
  29   (sb-thread:make-mutex :name name))
  30
  31 (defun acquire-lock (lock &optional (wait-p t))
  32   (sb-thread:get-mutex lock nil wait-p))
  33
  34 (defun release-lock (lock)
  35   (sb-thread:release-mutex lock))
  36
  37 (defmacro with-lock-held ((place) &body body)
  38   `(sb-thread:with-mutex (,place) ,@body))
  39
  40 (defun make-recursive-lock (&optional name)
  41   (sb-thread:make-mutex :name name))
  42
  43 ;;; XXX acquire-recursive-lock and release-recursive-lock are actually
  44 ;;; complicated because we can't use control stack tricks.  We need to
  45 ;;; actually count something to check that the acquire/releases are
  46 ;;; balanced
  47
  48 (defmacro with-recursive-lock-held ((place) &body body)
  49   `(sb-thread:with-recursive-lock (,place)
  50      ,@body))
  51
  52 ;;; Resource contention: condition variables
  53
  54 (defun make-condition-variable ()
  55   (sb-thread:make-waitqueue))
  56
  57 (defun condition-wait (condition-variable lock)
  58   (sb-thread:condition-wait condition-variable lock))
  59
  60 (defun condition-notify (condition-variable)
  61   (sb-thread:condition-notify condition-variable))
  62
  63 (defun thread-yield ()
  64   (sb-thread:release-foreground))
  65
  66 ;;; Introspection/debugging
  67
  68 (defun all-threads ()
  69   (sb-thread:list-all-threads))
  70
  71 (defun interrupt-thread (thread function)
  72   (sb-thread:interrupt-thread thread function))
  73
  74 (defun destroy-thread (thread)
  75   (signal-error-if-current-thread thread)
  76   (sb-thread:terminate-thread thread))
  77
  78 (defun thread-alive-p (thread)
  79   (sb-thread:thread-alive-p thread))
  80
  81 (mark-supported)