lispworks.lisp

   1 ;;; -*- Mode: LISP; Syntax: COMMON-LISP; Package: HUNCHENTOOT; Base: 10 -*-
   2
   3 ;;; Copyright (c) 2004-2010, Dr. Edmund Weitz. All rights reserved.
   4
   5 ;;; Redistribution and use in source and binary forms, with or without
   6 ;;; modification, are permitted provided that the following conditions
   7 ;;; are met:
   8
   9 ;;;   * Redistributions of source code must retain the above copyright
  10 ;;;     notice, this list of conditions and the following disclaimer.
  11
  12 ;;;   * Redistributions in binary form must reproduce the above
  13 ;;;     copyright notice, this list of conditions and the following
  14 ;;;     disclaimer in the documentation and/or other materials
  15 ;;;     provided with the distribution.
  16
  17 ;;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR 'AS IS' AND ANY EXPRESSED
  18 ;;; OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19 ;;; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20 ;;; ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  21 ;;; DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22 ;;; DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  23 ;;; GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24 ;;; INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  25 ;;; WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  26 ;;; NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  27 ;;; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28
  29 (in-package :hunchentoot)
  30
  31 (eval-when (:compile-toplevel :load-toplevel :execute)
  32   ;; make sure socket code is loaded
  33   (require "comm"))
  34
  35 (defun get-env-variable-as-directory (name)
  36   "Retrieves the environment variable named NAME and interprets it as
  37 the pathname of a directory which is returned."
  38   (lw:when-let (string (lw:environment-variable name))
  39     (when (plusp (length string))
  40       (cond ((find (char string (1- (length string))) "\\/" :test #'char=) string)
  41             (t (lw:string-append string "/"))))))
  42
  43 #+(and :lispworks4.4 (or :win32 :linux))
  44 (let ((id :system-cons-free-chain))
  45   (unless (scm::patch-id-loaded-p id)
  46     (error "You need a patch to improve the performance of this code. Request patch ~S for ~A for ~A from lisp-support@lispworks.com using the Report Bug command."
  47           id (lisp-implementation-type)
  48           #+:win32 "Windows"
  49           #+:linux "Linux")))
  50
  51 (defvar *cleanup-interval* 100
  52   "Should be NIL or a positive integer.  The system calls
  53 *CLEANUP-FUNCTION* whenever *CLEANUP-INTERVAL* new worker threads
  54 \(counted globally across all acceptors) have been created unless the
  55 value is NIL.  The initial value is 100.
  56
  57 This variable is only available on LispWorks.")
  58
  59 (defvar *cleanup-function* 'cleanup-function
  60   "A designator for a function without arguments which is called on a
  61 regular basis if *CLEANUP-INTERVAL* is not NIL.  The initial value is
  62 the name of a function which invokes a garbage collection on 32-bit
  63 versions of LispWorks.
  64
  65 This variable is only available on LispWorks.")
  66
  67 (defvar *worker-counter* 0
  68   "Internal counter used to count worker threads.  Needed for
  69 *CLEANUP-FUNCTION*.")
  70
  71 (defun cleanup-function ()
  72   "The default for *CLEANUP-FUNCTION*.  Invokes a GC on 32-bit
  73 LispWorks."
  74   #-:lispworks-64bit
  75   (hcl:mark-and-sweep 2))
  76
  77 (defun get-peer-address-and-port (socket)
  78   "Returns the peer address and port of the socket SOCKET as two
  79 values.  The address is returned as a string in dotted IP address
  80 notation."
  81   (multiple-value-bind (peer-addr peer-port)
  82       (comm:get-socket-peer-address socket)
  83     (values (ignore-errors (comm:ip-address-string peer-addr)) peer-port)))
  84
  85 (defun get-local-address-and-port (socket)
  86   "Returns the local address and port of the socket SOCKET as two
  87 values.  The address is returned as a string in dotted IP address
  88 notation."
  89   (multiple-value-bind (local-addr local-port)
  90       (comm:get-socket-address socket)
  91     (values (ignore-errors (comm:ip-address-string local-addr)) local-port)))
  92
  93 (eval-when (:compile-toplevel :load-toplevel)
  94   (when (let ((sym (find-symbol "STREAM-READ-TIMEOUT" :stream)))
  95           (and sym (fboundp sym)))
  96     (pushnew :stream-has-timeouts *features*)))
  97
  98 (defun make-socket-stream (socket acceptor)
  99   "Returns a stream for the socket SOCKET.  The ACCEPTOR argument is
 100 used to set the timeouts."
 101   #-stream-has-timeouts
 102   (when (acceptor-write-timeout acceptor)
 103     (parameter-error "You need LispWorks 5 or higher for write timeouts."))
 104   (make-instance 'comm:socket-stream
 105                  :socket socket
 106                  :direction :io
 107                  :read-timeout (acceptor-read-timeout acceptor)
 108                  #+stream-has-timeouts #+stream-has-timeouts
 109                  :write-timeout (acceptor-write-timeout acceptor)
 110                  :element-type 'octet))
 111
 112 (defun make-lock (name)
 113   "Simple wrapper to allow LispWorks and Bordeaux Threads to coexist."
 114   (mp:make-lock :name name))
 115
 116 (defmacro with-lock-held ((lock) &body body)
 117   "Simple wrapper to allow LispWorks and Bordeaux Threads to coexist."
 118   `(mp:with-lock (,lock) ,@body))
 119
 120 ;; some help for the IDE
 121 (dspec:define-dspec-alias defvar-unbound (name)
 122   `(defparameter ,name))
 123
 124 (dspec:define-dspec-alias def-http-return-code (name)
 125   `(defconstant ,name))
 126
 127 (editor:setup-indent "defvar-unbound" 1 2 4)
 128
 129 (editor:setup-indent "def-http-return-code" 1 2 4)
 130
 131 (editor:setup-indent "handler-case*" 1 2 4)
 132
 133 (defun make-condition-variable (&key name)
 134   (declare (ignore name))
 135   (mp:make-condition-variable))
 136
 137 (defun condition-variable-signal (condition-variable)
 138   (mp:condition-variable-signal condition-variable))
 139
 140 (defun condition-variable-wait (condition-variable lock)
 141   (mp:condition-variable-wait condition-variable lock))