;;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; Base: 10; Package: modlisp -*-
;;;; *************************************************************************
;;;; FILE IDENTIFICATION
;;;;
;;;; Name:          processes.lisp
;;;; Purpose:       Multiprocessing functions
;;;; Programmer:    Kevin M. Rosenberg
;;;; Date Started:  June 2003
;;;;
;;;; $Id: processes.lisp,v 1.2 2003/07/09 22:12:52 kevin Exp $
;;;; *************************************************************************

(in-package #:kmrcl)


(defun make-process (name func)
  #+allegro (mp:process-run-function name func)
  #+cmu (mp:make-process func :name name)
  #+lispworks (mp:process-run-function name nil func)
  #+sb-thread (sb-thread:make-thread func)
  #-(or allegro cmu lispworks sb-thread) (funcall func)
  )

(defun destroy-process (process)
  #+cmu (mp:destroy-process process)
  #+allegro (mp:process-kill process)
  #+sbcl-thread (sb-thread:destroy-thread process)
  #+lispworks (mp:process-kill process)
  )

(defun make-lock (name)
  #+allegro (mp:make-process-lock :name name)
  #+cmu (mp:make-lock name)
  #+lispworks (mp:make-lock :name name)
  #+sbcl-thread (sb-thread:make-mutex :name name)
  )

(defmacro with-lock-held ((lock) &body body)
  #+allegro
  `(mp:with-process-lock (,lock) ,@body)
  #+cmu
  `(mp:with-lock-held (,lock) ,@body)
  #+lispworks
  `(mp:with-lock (,lock) ,@body)
  #+sbcl-thread
  `(sb-thread:with-recursive-lock (,lock) ,@body)
  )