src/sbcl.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 SBCL Threads interface can be found at
  12 ;;; http://www.sbcl.org/manual/Threading.html
  13
  14 ;;; Thread Creation
  15
  16 (defun %make-thread (function name)
  17   (sb-thread:make-thread function :name name))
  18
  19 (defun current-thread ()
  20   sb-thread:*current-thread*)
  21
  22 (defun threadp (object)
  23   (typep object 'sb-thread:thread))
  24
  25 (defun thread-name (thread)
  26   (sb-thread:thread-name thread))
  27
  28 ;;; Resource contention: locks and recursive locks
  29
  30 (defun make-lock (&optional name)
  31   (sb-thread:make-mutex :name name))
  32
  33 (defun acquire-lock (lock &optional (wait-p t))
  34   (sb-thread:get-mutex lock nil wait-p))
  35
  36 (defun release-lock (lock)
  37   (sb-thread:release-mutex lock))
  38
  39 (defmacro with-lock-held ((place) &body body)
  40   `(sb-thread:with-mutex (,place) ,@body))
  41
  42 (defun make-recursive-lock (&optional name)
  43   (sb-thread:make-mutex :name name))
  44
  45 ;;; XXX acquire-recursive-lock and release-recursive-lock are actually
  46 ;;; complicated because we can't use control stack tricks.  We need to
  47 ;;; actually count something to check that the acquire/releases are
  48 ;;; balanced
  49
  50 (defmacro with-recursive-lock-held ((place) &body body)
  51   `(sb-thread:with-recursive-lock (,place)
  52      ,@body))
  53
  54 ;;; Resource contention: condition variables
  55
  56 (defun make-condition-variable ()
  57   (sb-thread:make-waitqueue))
  58
  59 (defun condition-wait (condition-variable lock)
  60   (sb-thread:condition-wait condition-variable lock))
  61
  62 (defun condition-notify (condition-variable)
  63   (sb-thread:condition-notify condition-variable))
  64
  65 (defun thread-yield ()
  66   (sb-thread:release-foreground))
  67
  68 ;;; Timeouts
  69
  70 (defmacro with-timeout ((timeout) &body body)
  71   `(sb-ext:with-timeout ,timeout
  72      ,@body))
  73
  74 ;;; Introspection/debugging
  75
  76 (defun all-threads ()
  77   (sb-thread:list-all-threads))
  78
  79 (defun interrupt-thread (thread function)
  80   (sb-thread:interrupt-thread thread function))
  81
  82 (defun destroy-thread (thread)
  83   (signal-error-if-current-thread thread)
  84   (sb-thread:terminate-thread thread))
  85
  86 (defun thread-alive-p (thread)
  87   (sb-thread:thread-alive-p thread))
  88
  89 (defun join-thread (thread)
  90   (sb-thread:join-thread thread))
  91
  92 (mark-supported)