src/armedbear.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 ;;; the implementation of the Armed Bear thread interface can be found in
  10 ;;; src/org/armedbearlisp/LispThread.java
  11
  12 ;;; Thread Creation
  13
  14 (defun make-thread (function &key name)
  15   (ext:make-thread function :name name))
  16
  17 (defun current-thread ()
  18   (ext:current-thread))
  19
  20 (defun thread-name (thread)
  21   (ext:thread-name thread))
  22
  23 ;;; Yes, this is nasty
  24 (defun threadp (object)
  25   (handler-case (progn (thread-name object) t)
  26     (type-error () nil)))
  27
  28 ;;; Resource contention: locks and recursive locks
  29
  30 ;;; Don't know what the arguments to MAKE-THREAD-LOCK are, but it
  31 ;;; doesn't mind being a thunk
  32 (defun make-lock (&optional name)
  33   (declare (ignore name))
  34   (ext:make-thread-lock))
  35
  36 (defun acquire-lock (lock &optional (wait-p t))
  37   (declare (ignore wait-p))
  38   (ext:thread-lock lock))
  39
  40 (defun release-lock (lock)
  41   (ext:thread-unlock lock))
  42
  43 (defmacro with-lock-held ((place) &body body)
  44   `(ext:with-thread-lock (,place) ,@body))
  45
  46 ;;; Resource contention: condition variables
  47
  48 (defun thread-yield ()
  49   (sleep 0))
  50
  51 ;;; Introspection/debugging
  52
  53 (defun interrupt-thread (thread function)
  54   (ext:interrupt-thread thread function))
  55
  56 (defun destroy-thread (thread)
  57   (signal-error-if-current-thread thread)
  58   (ext:destroy-thread thread))
  59
  60 (defun thread-alive-p (thread)
  61   (ext:thread-alive-p thread))
  62
  63 (mark-supported)