src/impl-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 ;;; Resource contention: locks and recursive locks
  24
  25 (defun make-lock (&optional name)
  26   (thread:make-lock (or name "Anonymous lock")))
  27
  28 (defun acquire-lock (lock &optional (wait-p t))
  29   (thread::acquire-lock lock nil wait-p))
  30
  31 (defun release-lock (lock)
  32   (thread::release-lock lock))
  33
  34 (defmacro with-lock-held ((place) &body body)
  35   `(thread:with-lock-held (,place) ,@body))
  36
  37 (defun make-recursive-lock (&optional name)
  38   (thread:make-lock (or name "Anonymous recursive lock")
  39                     :type :recursive))
  40
  41 ;;; XXX acquire-recursive-lock and release-recursive-lock are actually
  42 ;;; complicated because we can't use control stack tricks.  We need to
  43 ;;; actually count something to check that the acquire/releases are
  44 ;;; balanced
  45
  46 (defmacro with-recursive-lock-held ((place) &body body)
  47   `(thread:with-lock-held (,place)
  48      ,@body))
  49
  50 ;;; Resource contention: condition variables
  51
  52 (defun make-condition-variable (&key name)
  53   (thread:make-cond-var (or name "Anonymous condition variable")))
  54
  55 (defun condition-wait (condition-variable lock)
  56   (thread:cond-var-wait condition-variable lock))
  57
  58 (defun condition-notify (condition-variable)
  59   (thread:cond-var-broadcast condition-variable))
  60
  61 (defun thread-yield ()
  62   (mp:process-yield))
  63
  64 ;;; Introspection/debugging
  65
  66 (defun all-threads ()
  67   (mp:all-processes))
  68
  69 (defun interrupt-thread (thread function)
  70   (thread:thread-interrupt thread function))
  71
  72 (defun destroy-thread (thread)
  73   (thread:destroy-thread thread))
  74
  75 (defun thread-alive-p (thread)
  76   (mp:process-alive-p thread))
  77
  78 (defun join-thread (thread)
  79   (mp:process-wait (format nil "Waiting for thread ~A to complete" thread)
  80                    (lambda () (not (mp:process-alive-p thread)))))
  81
  82 (mark-supported)