src/scl.lisp

   1 ;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; indent-tabs-mode: nil -*-
   2
   3 #|
   4 Copyright 2008 Scieneer Pty Ltd
   5
   6 Distributed under the MIT license (see LICENSE file)
   7 |#
   8
   9 (in-package #:bordeaux-threads)
  10
  11 (defun %make-thread (function name)
  12   (thread:thread-create function :name name))
  13
  14 (defun current-thread ()
  15   thread:*thread*)
  16
  17 (defun threadp (object)
  18   (typep object 'thread:thread))
  19
  20 (defun thread-name (thread)
  21   (thread:thread-name thread))
  22
  23 (defun make-lock (&optional name)
  24   (thread:make-lock name))
  25
  26 (defun acquire-lock (lock &optional (wait-p t))
  27   (thread::acquire-lock lock nil wait-p))
  28
  29 (defun release-lock (lock)
  30   (thread::release-lock lock))
  31
  32 (defmacro with-lock-held ((place) &body body)
  33   `(thread:with-lock-held (,place) ,@body))
  34
  35 (defun make-recursive-lock (&optional name)
  36   (thread:make-lock name :type :recursive))
  37
  38 ;;; XXX acquire-recursive-lock and release-recursive-lock are actually
  39 ;;; complicated because we can't use control stack tricks.  We need to
  40 ;;; actually count something to check that the acquire/releases are
  41 ;;; balanced
  42
  43 (defmacro with-recursive-lock-held ((place) &body body)
  44   `(thread:with-lock-held (,place)
  45      ,@body))
  46
  47 ;;; Resource contention: condition variables
  48
  49 (defun make-condition-variable ()
  50   (thread:make-cond-var))
  51
  52 (defun condition-wait (condition-variable lock)
  53   (thread:cond-var-wait condition-variable lock))
  54
  55 (defun condition-notify (condition-variable)
  56   (thread:cond-var-broadcast condition-variable))
  57
  58 (defun thread-yield ()
  59   (mp:process-yield))
  60
  61 ;;; Timeouts
  62
  63 (defmacro with-timeout ((timeout) &body body)
  64   `(error "with-timeout is not reliable and should not be used."))
  65
  66 ;;; Introspection/debugging
  67
  68 (defun all-threads ()
  69   (mp:all-processes))
  70
  71 (defun interrupt-thread (thread function)
  72   (thread:thread-interrupt thread function))
  73
  74 (defun destroy-thread (thread)
  75   (thread:destroy-thread thread))
  76
  77 (defun thread-alive-p (thread)
  78   (mp:process-alive-p thread))
  79
  80 (defun join-thread (thread)
  81   (error "Join-thread not implemented."))
  82
  83 (mark-supported)