processes.lisp

   1 ;;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; Base: 10 -*-
   2 ;;;; *************************************************************************
   3 ;;;; FILE IDENTIFICATION
   4 ;;;;
   5 ;;;; Name:          processes.lisp
   6 ;;;; Purpose:       Multiprocessing functions
   7 ;;;; Programmer:    Kevin M. Rosenberg
   8 ;;;; Date Started:  June 2003
   9 ;;;; *************************************************************************
  10
  11 (in-package #:kmrcl)
  12
  13
  14 (defun make-process (name func)
  15   #+allegro (mp:process-run-function name func)
  16   #+cmu (mp:make-process func :name name)
  17   #+lispworks (mp:process-run-function name nil func)
  18   #+sb-thread (sb-thread:make-thread func :name name)
  19   #+ccl (ccl:process-run-function name func)
  20   #-(or allegro cmu lispworks sb-thread ccl) (funcall func)
  21   )
  22
  23 (defun destroy-process (process)
  24   #+cmu (mp:destroy-process process)
  25   #+allegro (mp:process-kill process)
  26   #+sb-thread (sb-thread:terminate-thread process)
  27   #+lispworks (mp:process-kill process)
  28   #+ccl (ccl:process-kill process)
  29   )
  30
  31 (defun make-lock (name)
  32   "Make a named process lock."
  33   #+abcl (ext:make-thread-lock)
  34   #+allegro (mp:make-process-lock :name name)
  35   #+ccl (ccl:make-lock name)
  36   #+cmu (mp:make-lock name)
  37   #+lispworks (mp:make-lock :name name)
  38   #+sb-thread (sb-thread:make-mutex :name name)
  39   #-(or lispworks abcl openmcl allegro sb-thread)
  40   (declare (ignore name))
  41   #-(or abcl allegro ccl cmu lispworks sb-thread)
  42   nil)
  43
  44
  45 (defmacro with-lock-held ((lock) &body body)
  46   #+abcl
  47   `(ext:with-thread-lock (,lock) ,@body)
  48   #+allegro
  49   `(mp:with-process-lock (,lock) ,@body)
  50   #+ccl
  51   `(ccl:with-lock-grabbed (,lock) ,@body)
  52   #+cmu
  53   `(mp:with-lock-held (,lock) ,@body)
  54   #+lispworks
  55   `(mp:with-lock (,lock) ,@body)
  56   #+sb-thread
  57   `(sb-thread:with-recursive-lock (,lock) ,@body)
  58   #-(or abcl allegro ccl cmu lispworks sb-thread)
  59   `(progn ,@body)
  60   )
  61
  62
  63 (defmacro with-timeout ((seconds) &body body)
  64   #+allegro
  65   `(mp:with-timeout (,seconds) ,@body)
  66   #+cmu
  67   `(mp:with-timeout (,seconds) ,@body)
  68   #+sb-thread
  69   `(sb-ext:with-timeout ,seconds ,@body)
  70   #+ccl
  71   `(ccl:process-wait-with-timeout "waiting"
  72                                  (* ,seconds ccl:*ticks-per-second*)
  73                                  #'(lambda ()
  74                                      ,@body) nil)
  75   #-(or allegro cmu sb-thread ccl)
  76   `(progn ,@body)
  77   )
  78
  79 (defun process-sleep (n)
  80   "Put thread to sleep for n seconds."
  81   #+allegro (mp:process-sleep n)
  82   #-allegro (sleep n))