src/clisp.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 ;;; Thread Creation
  12
  13 (defun %make-thread (function name)
  14   (mt:make-thread function :name name))
  15
  16 (defun current-thread ()
  17   (mt:current-thread))
  18
  19 (defun threadp (object)
  20   (mt:threadp object))
  21
  22 (defun thread-name (thread)
  23   (mt:thread-name thread))
  24
  25 ;;; Resource contention: locks and recursive locks
  26
  27 (defun make-lock (&optional name)
  28   (mt:make-mutex :name name))
  29
  30 (defun acquire-lock (lock &optional (wait-p t))
  31   (declare (ignore wait-p))
  32   (mt:mutex-lock lock))
  33
  34 (defun release-lock (lock)
  35   (mt:mutex-unlock lock))
  36
  37 (defmacro with-lock-held ((place) &body body)
  38   `(mt:with-lock (,place) ,@body))
  39
  40 (defun make-recursive-lock (&optional name)
  41   (mt:make-mutex :name name :recursive-p t))
  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   `(mt:with-lock (,place) ,@body))
  50
  51 ;;; Resource contention: condition variables
  52
  53 (defun make-condition-variable ()
  54   (mt::make-exemption))
  55
  56 (defun condition-wait (condition-variable lock)
  57   (mt:exemption-wait condition-variable lock))
  58
  59 (defun condition-notify (condition-variable)
  60   (mt:exemption-signal condition-variable))
  61
  62 (defun thread-yield ()
  63   (mt:thread-yield))
  64
  65 ;;; Timeouts
  66
  67 (defmacro with-timeout ((timeout) &body body)
  68   `(mt:with-timeout (,timeout)
  69      ,@body))
  70
  71 ;;; Introspection/debugging
  72
  73 (defun all-threads ()
  74   (mt:list-threads))
  75
  76 (defun interrupt-thread (thread function)
  77   (mt:thread-interrupt thread function))
  78
  79 (defun destroy-thread (thread)
  80   (signal-error-if-current-thread thread)
  81   (mt:thread-kill thread))
  82
  83 (defun thread-alive-p (thread)
  84   (mt:thread-active-p thread))
  85
  86 (mark-supported)