Created
May 29, 2020 02:03
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Mutex en Chicken Scheme con SRFI-18
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;; mutex.scm | |
;; Copyright (C) 2020 Iván Alejandro Ávalos Díaz | |
;; | |
;; This program is free software: you can redistribute it and/or modify | |
;; it under the terms of the GNU General Public License as published by | |
;; the Free Software Foundation, either version 3 of the License, or | |
;; (at your option) any later version. | |
;; | |
;; This program is distributed in the hope that it will be useful, | |
;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
;; GNU General Public License for more details. | |
;; | |
;; You should have received a copy of the GNU General Public License | |
;; along with this program. If not, see <https://www.gnu.org/licenses/>. | |
(require-extension srfi-13) | |
(require-extension srfi-18) | |
(require-extension srfi-28) | |
(define-constant n-thread 20) | |
(define-constant sleep-thread 0.2) | |
(define-constant MAX 2) | |
(define ans 0) | |
(define finished 0) | |
(define mtx (make-mutex)) | |
(define threads (make-vector n-thread)) | |
(define hello | |
(lambda () | |
(mutex-lock! mtx) | |
(print* (format "Thread: ~a | " (thread-name (current-thread)))) | |
(let loop ((i 0)) | |
(when (< i MAX) | |
(set! ans (add1 ans)) | |
(loop (add1 i)))) | |
(print (format "Count: ~a" ans)) | |
(thread-sleep! sleep-thread) | |
(set! finished (add1 finished)) | |
(mutex-unlock! mtx))) | |
(print (format "Threads: ~a | Sleep: ~a | Value: ~a" n-thread sleep-thread MAX)) | |
(thread-sleep! sleep-thread) | |
(let loop ((i 0)) | |
(when (< i n-thread) | |
(vector-set! threads i (make-thread hello i)) | |
(loop (add1 i)))) | |
(let loop ((i 0)) | |
(when (< i n-thread) | |
(thread-start! (vector-ref threads i)) | |
(loop (add1 i)))) | |
(let loop () | |
(when (< finished n-thread) | |
(loop))) | |
(print (format "Actual Count: ~a | Expected Count: ~a" | |
ans (* MAX n-thread))) |
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