impl-clozure.lisp - clic - Clic is an command line interactive client for gophe… | |
git clone git://bitreich.org/clic/ git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws65… | |
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impl-clozure.lisp (3061B) | |
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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 OpenMCL Threads interface can be found at | |
12 ;;; http://openmcl.clozure.com/Doc/Programming-with-Threads.html | |
13 | |
14 (deftype thread () | |
15 'ccl:process) | |
16 | |
17 ;;; Thread Creation | |
18 | |
19 (defun %make-thread (function name) | |
20 (ccl:process-run-function name function)) | |
21 | |
22 (defun current-thread () | |
23 ccl:*current-process*) | |
24 | |
25 (defun threadp (object) | |
26 (typep object 'ccl:process)) | |
27 | |
28 (defun thread-name (thread) | |
29 (ccl:process-name thread)) | |
30 | |
31 ;;; Resource contention: locks and recursive locks | |
32 | |
33 (deftype lock () 'ccl:lock) | |
34 | |
35 (deftype recursive-lock () 'ccl:lock) | |
36 | |
37 (defun lock-p (object) | |
38 (typep object 'ccl:lock)) | |
39 | |
40 (defun recursive-lock-p (object) | |
41 (typep object 'ccl:lock)) | |
42 | |
43 (defun make-lock (&optional name) | |
44 (ccl:make-lock (or name "Anonymous lock"))) | |
45 | |
46 (defun acquire-lock (lock &optional (wait-p t)) | |
47 (if wait-p | |
48 (ccl:grab-lock lock) | |
49 (ccl:try-lock lock))) | |
50 | |
51 (defun release-lock (lock) | |
52 (ccl:release-lock lock)) | |
53 | |
54 (defmacro with-lock-held ((place) &body body) | |
55 `(ccl:with-lock-grabbed (,place) | |
56 ,@body)) | |
57 | |
58 (defun make-recursive-lock (&optional name) | |
59 (ccl:make-lock (or name "Anonymous recursive lock"))) | |
60 | |
61 (defun acquire-recursive-lock (lock) | |
62 (ccl:grab-lock lock)) | |
63 | |
64 (defun release-recursive-lock (lock) | |
65 (ccl:release-lock lock)) | |
66 | |
67 (defmacro with-recursive-lock-held ((place) &body body) | |
68 `(ccl:with-lock-grabbed (,place) | |
69 ,@body)) | |
70 | |
71 ;;; Resource contention: condition variables | |
72 | |
73 (defun make-condition-variable (&key name) | |
74 (declare (ignore name)) | |
75 (ccl:make-semaphore)) | |
76 | |
77 (defun condition-wait (condition-variable lock &key timeout) | |
78 (release-lock lock) | |
79 (unwind-protect | |
80 (if timeout | |
81 (ccl:timed-wait-on-semaphore condition-variable timeout) | |
82 (ccl:wait-on-semaphore condition-variable)) | |
83 (acquire-lock lock t)) | |
84 t) | |
85 | |
86 (defun condition-notify (condition-variable) | |
87 (ccl:signal-semaphore condition-variable)) | |
88 | |
89 (defun thread-yield () | |
90 (ccl:process-allow-schedule)) | |
91 | |
92 ;;; Semaphores | |
93 | |
94 (deftype semaphore () | |
95 'ccl:semaphore) | |
96 | |
97 (defun make-semaphore (&key name (count 0)) | |
98 (declare (ignore name)) | |
99 (let ((semaphore (ccl:make-semaphore))) | |
100 (dotimes (c count) (ccl:signal-semaphore semaphore)) | |
101 semaphore)) | |
102 | |
103 (defun signal-semaphore (semaphore &key (count 1)) | |
104 (dotimes (c count) (ccl:signal-semaphore semaphore))) | |
105 | |
106 (defun wait-on-semaphore (semaphore &key timeout) | |
107 (if timeout | |
108 (ccl:timed-wait-on-semaphore semaphore timeout) | |
109 (ccl:wait-on-semaphore semaphore))) | |
110 | |
111 ;;; Introspection/debugging | |
112 | |
113 (defun all-threads () | |
114 (ccl:all-processes)) | |
115 | |
116 (defun interrupt-thread (thread function &rest args) | |
117 (declare (dynamic-extent args)) | |
118 (apply #'ccl:process-interrupt thread function args)) | |
119 | |
120 (defun destroy-thread (thread) | |
121 (signal-error-if-current-thread thread) | |
122 (ccl:process-kill thread)) | |
123 | |
124 (defun thread-alive-p (thread) | |
125 (not (ccl:process-exhausted-p thread))) | |
126 | |
127 (defun join-thread (thread) | |
128 (ccl:join-process thread)) | |
129 | |
130 (mark-supported) |