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	---
	timpl-sbcl.lisp (3462B)
	---
	1 ;;;; -- 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 ;;; documentation on the SBCL Threads interface can be found at
	12 ;;; http://www.sbcl.org/manual/Threading.html
	13
	14 (deftype thread ()
	15 'sb-thread:thread)
	16
	17 ;;; Thread Creation
	18
	19 (defun %make-thread (function name)
	20 (sb-thread:make-thread function :name name))
	21
	22 (defun current-thread ()
	23 sb-thread:current-thread)
	24
	25 (defun threadp (object)
	26 (typep object 'sb-thread:thread))
	27
	28 (defun thread-name (thread)
	29 (sb-thread:thread-name thread))
	30
	31 ;;; Resource contention: locks and recursive locks
	32
	33 (deftype lock () 'sb-thread:mutex)
	34
	35 (deftype recursive-lock () 'sb-thread:mutex)
	36
	37 (defun lock-p (object)
	38 (typep object 'sb-thread:mutex))
	39
	40 (defun recursive-lock-p (object)
	41 (typep object 'sb-thread:mutex))
	42
	43 (defun make-lock (&optional name)
	44 (sb-thread:make-mutex :name (or name "Anonymous lock")))
	45
	46 (defun acquire-lock (lock &optional (wait-p t))
	47 #+#.(cl:if (cl:find-symbol (cl:string '#:grab-mutex) :sb-thread) '(and…
	48 (sb-thread:grab-mutex lock :waitp wait-p)
	49 #-#.(cl:if (cl:find-symbol (cl:string '#:grab-mutex) :sb-thread) '(and…
	50 (sb-thread:get-mutex lock nil wait-p))
	51
	52 (defun release-lock (lock)
	53 (sb-thread:release-mutex lock))
	54
	55 (defmacro with-lock-held ((place) &body body)
	56 `(sb-thread:with-mutex (,place) ,@body))
	57
	58 (defun make-recursive-lock (&optional name)
	59 (sb-thread:make-mutex :name (or name "Anonymous recursive lock")))
	60
	61 ;;; XXX acquire-recursive-lock and release-recursive-lock are actually
	62 ;;; complicated because we can't use control stack tricks. We need to
	63 ;;; actually count something to check that the acquire/releases are
	64 ;;; balanced
	65
	66 (defmacro with-recursive-lock-held ((place) &body body)
	67 `(sb-thread:with-recursive-lock (,place)
	68 ,@body))
	69
	70 ;;; Resource contention: condition variables
	71
	72 (defun make-condition-variable (&key name)
	73 (sb-thread:make-waitqueue :name (or name "Anonymous condition variable…
	74
	75 (defun condition-wait (condition-variable lock &key timeout)
	76 (sb-thread:condition-wait condition-variable lock :timeout timeout))
	77
	78 (defun condition-notify (condition-variable)
	79 (sb-thread:condition-notify condition-variable))
	80
	81 (defun thread-yield ()
	82 (sb-thread:release-foreground))
	83
	84 ;;; Timeouts
	85
	86 (deftype timeout ()
	87 'sb-ext:timeout)
	88
	89 (defmacro with-timeout ((timeout) &body body)
	90 `(sb-ext:with-timeout ,timeout
	91 ,@body))
	92
	93 ;;; Semaphores
	94
	95 (deftype semaphore ()
	96 'sb-thread:semaphore)
	97
	98 (defun make-semaphore (&key name (count 0))
	99 (sb-thread:make-semaphore :name name :count count))
	100
	101 (defun signal-semaphore (semaphore &key (count 1))
	102 (sb-thread:signal-semaphore semaphore count))
	103
	104 (defun wait-on-semaphore (semaphore &key timeout)
	105 (sb-thread:wait-on-semaphore semaphore :timeout timeout))
	106
	107 ;;; Introspection/debugging
	108
	109 (defun all-threads ()
	110 (sb-thread:list-all-threads))
	111
	112 (defun interrupt-thread (thread function &rest args)
	113 (flet ((apply-function ()
	114 (if args
	115 (lambda () (apply function args))
	116 function)))
	117 (declare (dynamic-extent #'apply-function))
	118 (sb-thread:interrupt-thread thread (apply-function))))
	119
	120 (defun destroy-thread (thread)
	121 (signal-error-if-current-thread thread)
	122 (sb-thread:terminate-thread thread))
	123
	124 (defun thread-alive-p (thread)
	125 (sb-thread:thread-alive-p thread))
	126
	127 (defun join-thread (thread)
	128 (sb-thread:join-thread thread))
	129
	130 (mark-supported)