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;; Fibers: cooperative, event-driven user-space threads.
;;;; Copyright (C) 2016 Free Software Foundation, Inc.
;;;;
;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public
;;;; License as published by the Free Software Foundation; either
;;;; version 3 of the License, or (at your option) any later version.
;;;;
;;;; This library 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
;;;; Lesser General Public License for more details.
;;;;
;;;; You should have received a copy of the GNU Lesser General Public
;;;; License along with this library; if not, write to the Free Software
;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;;;;
(define-module (tests basic)
#:use-module (fibers))
(define failed? #f)
(define-syntax-rule (assert-equal expected actual)
(let ((x expected))
(format #t "assert ~s equal to ~s: " 'actual x)
(force-output)
(let ((y actual))
(cond
((equal? x y) (format #t "ok\n"))
(else
(format #t "no (got ~s)\n" y)
(set! failed? #t))))))
(define-syntax-rule (assert-terminates exp)
(begin
(format #t "assert ~s terminates: " 'exp)
(force-output)
exp
(format #t "ok\n")))
(define-syntax-rule (assert-run-fibers-terminates exp kw ...)
(begin
(format #t "assert terminates: ~s: " '(run-fibers (lambda () exp) kw ...))
(force-output)
(let ((start (get-internal-real-time)))
(call-with-values (lambda () (run-fibers (lambda () exp) kw ...))
(lambda vals
(format #t "ok (~a s)\n" (/ (- (get-internal-real-time) start)
1.0 internal-time-units-per-second))
(apply values vals))))))
(define-syntax-rule (assert-run-fibers-returns (expected ...) exp)
(begin
(call-with-values (lambda ()
(assert-run-fibers-terminates exp #:drain? #t))
(lambda run-fiber-return-vals
(assert-equal '(expected ...) run-fiber-return-vals)))))
(define-syntax-rule (do-times n exp)
(let lp ((count n))
(let ((count (1- count)))
exp
(unless (zero? count) (lp count)))))
(assert-equal #f #f)
(assert-terminates #t)
(assert-equal #f (false-if-exception (begin (run-fibers) #t)))
(assert-run-fibers-terminates (sleep 1) #:drain? #t)
(assert-run-fibers-terminates (do-times 1 (spawn-fiber (lambda () #t))) #:drain? #t)
(assert-run-fibers-terminates (do-times 10 (spawn-fiber (lambda () #t))) #:drain? #t)
(assert-run-fibers-terminates (do-times 100 (spawn-fiber (lambda () #t))) #:drain? #t)
(assert-run-fibers-terminates (do-times 1000 (spawn-fiber (lambda () #t))) #:drain? #t)
(assert-run-fibers-terminates (do-times 10000 (spawn-fiber (lambda () #t))) #:drain? #t)
(assert-run-fibers-terminates (do-times 100000 (spawn-fiber (lambda () #t))) #:drain? #t)
(assert-run-fibers-terminates (do-times 100000
(spawn-fiber (lambda () #t) #:parallel? #t)) #:drain? #t)
(define (loop-to-1e4) (let lp ((i 0)) (when (< i #e1e4) (lp (1+ i)))))
(assert-run-fibers-terminates (do-times 100000 (spawn-fiber loop-to-1e4)) #:drain? #t)
(assert-run-fibers-terminates (do-times 100000 (spawn-fiber loop-to-1e4 #:parallel? #t)) #:drain? #t)
(assert-run-fibers-terminates (do-times 1 (spawn-fiber (lambda () (sleep 1)))) #:drain? #t)
(assert-run-fibers-terminates (do-times 10 (spawn-fiber (lambda () (sleep 1)))) #:drain? #t)
(assert-run-fibers-terminates (do-times 100 (spawn-fiber (lambda () (sleep 1)))) #:drain? #t)
(assert-run-fibers-terminates (do-times 1000 (spawn-fiber (lambda () (sleep 1)))) #:drain? #t)
(assert-run-fibers-terminates (do-times 10000 (spawn-fiber (lambda () (sleep 1)))) #:drain? #t)
(assert-run-fibers-terminates (do-times 20000 (spawn-fiber (lambda () (sleep 1)))) #:drain? #t)
(assert-run-fibers-terminates (do-times 40000 (spawn-fiber (lambda () (sleep 1)))) #:drain? #t)
(define (spawn-fiber-tree n leaf)
(do-times n (spawn-fiber
(lambda ()
(if (= n 1)
(leaf)
(spawn-fiber-tree (1- n) leaf))))))
(assert-run-fibers-terminates (spawn-fiber-tree 5 (lambda () (sleep 1))) #:drain? #t)
(define (spawn-fiber-chain n)
(spawn-fiber
(lambda ()
(unless (zero? (1- n))
(spawn-fiber-chain (1- n))))))
(assert-run-fibers-terminates (spawn-fiber-chain 5) #:drain? #t)
(assert-run-fibers-terminates (spawn-fiber-chain 50) #:drain? #t)
(assert-run-fibers-terminates (spawn-fiber-chain 500) #:drain? #t)
(assert-run-fibers-terminates (spawn-fiber-chain 5000) #:drain? #t)
(assert-run-fibers-terminates (spawn-fiber-chain 50000) #:drain? #t)
(assert-run-fibers-terminates (spawn-fiber-chain 500000) #:drain? #t)
(assert-run-fibers-terminates (spawn-fiber-chain 5000000) #:drain? #t)
(let ((run-order 0))
(define (test-run-order count)
(for-each (lambda (n)
(spawn-fiber
(lambda ()
(unless (eqv? run-order n)
(error "bad run order" run-order n))
(set! run-order (1+ n)))))
(iota count)))
(assert-run-fibers-terminates (test-run-order 10) #:parallelism 1 #:drain? #t))
(let ((run-order 0))
(define (test-wakeup-order count)
(for-each (lambda (n)
(spawn-fiber
(lambda ()
(unless (eqv? run-order n)
(error "bad run order" run-order n))
(set! run-order (1+ n)))))
(iota count)))
(assert-run-fibers-terminates (test-wakeup-order 10) #:parallelism 1 #:drain? #t))
(assert-run-fibers-returns (1) 1)
(define (check-sleep timeout)
(spawn-fiber (lambda ()
(let ((start (get-internal-real-time)))
(sleep timeout)
(let ((elapsed (/ (- (get-internal-real-time) start)
1.0 internal-time-units-per-second)))
(format #t "assert sleep ~as < actual ~as: ~a (diff: ~a%)\n"
timeout elapsed (<= timeout elapsed)
(* 100 (/ (- elapsed timeout) timeout)))
(set! failed? (< elapsed timeout)))))))
(assert-run-fibers-terminates
(do-times 20 (check-sleep (random 1.0))) #:drain? #t)
;; exceptions
;; closing port causes pollerr
;; live threads list
(exit (if failed? 1 0))
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