--- /dev/null
+# This file is part of NIT (http://www.nitlanguage.org).
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Example implemented from "The computer Language Benchmarks Game" - Chameneos-Redux
+# http://benchmarksgame.alioth.debian.org/
+#
+# Complete description of the chameneos-redux :
+# https://benchmarksgame.alioth.debian.org/u64q/chameneosredux-description.html#chameneosredux
+module chameneosredux is no_warning("missing-doc")
+
+import actors
+
+class Creature
+ actor
+ var place: MeetingPlace
+ var color: Int
+ var id: Int
+ var count = 0
+ var samecount = 0
+
+ fun run do
+ loop
+ var p = place.meet(id, color)
+ if p == null then break
+ color = p.color
+ if p.sameid then samecount += 1
+ count += 1
+ end
+ end
+
+ fun to_string: String do return count.to_s + " " + numbers[samecount]
+end
+
+class Pair
+ var sameid: Bool
+ var color: Int
+end
+
+class MeetingPlace
+ var meetings_left: Int
+ var firstcolor: nullable Int
+ var firstid: Int = 0
+ var current: Future[Pair] is noinit
+
+ private var mutex = new Mutex
+
+ fun meet(id, c: Int): nullable Pair do
+ var new_pair = new Future[Pair]
+ mutex.lock
+ if meetings_left == 0 then
+ mutex.unlock
+ return null
+ else
+ if firstcolor == null then
+ firstcolor = c
+ firstid = id
+ current = new Future[Pair]
+ else
+ var color = complement(c, firstcolor.as(not null))
+ current.set_value(new Pair(id == firstid, color))
+ firstcolor = null
+ meetings_left -= 1
+ end
+ new_pair = current
+ end
+ mutex.unlock
+ return new_pair.join
+ end
+end
+
+redef class Sys
+ fun blue: Int do return 0
+ fun red: Int do return 1
+ fun yellow: Int do return 2
+ var numbers: Array[String] = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
+ var colors: Array[String] = ["blue", "red", "yellow"]
+end
+
+fun complement(c, other: Int): Int do
+ if c == blue then
+ if other == blue then
+ return blue
+ else if other == red then
+ return yellow
+ else if other == yellow then
+ return red
+ end
+ else if c == red then
+ if other == blue then
+ return yellow
+ else if other == red then
+ return red
+ else if other == yellow then
+ return blue
+ end
+ else if c == yellow then
+ if other == blue then
+ return red
+ else if other == red then
+ return blue
+ else if other == yellow then
+ return yellow
+ end
+ end
+ abort
+end
+
+fun print_all_colors do
+ print_colors(blue, blue)
+ print_colors(blue, red)
+ print_colors(blue, yellow)
+ print_colors(red, blue)
+ print_colors(red, red)
+ print_colors(red, yellow)
+ print_colors(yellow, blue)
+ print_colors(yellow, red)
+ print_colors(yellow, yellow)
+end
+
+fun print_colors(c1, c2: Int) do
+ print colors[c1] + " + " + colors[c2] + " -> " + colors[complement(c1, c2)]
+end
+
+fun get_number(n: Int): String do
+ var str = ""
+ var nstr = n.to_s
+ for c in nstr do
+ str += " " + numbers[c.to_i]
+ end
+ return str
+end
+
+fun work(n, nb_colors : Int ) do
+ var place = new MeetingPlace(n)
+ var creatures = new Array[Creature]
+ for i in [0..nb_colors[ do
+ printn " " + colors[i % 3]
+ creatures[i] = new Creature(place, i % 3, i)
+ end
+ print ""
+
+ for c in creatures do c.async.run
+
+ active_actors.is_empty
+
+ var total = 0
+ for c in creatures do
+ print c.to_string
+ total += c.count
+ end
+
+ print get_number(total)
+ print ""
+
+ for c in creatures do
+ c.async.terminate
+ c.async.wait_termination
+ end
+end
+
+var n = 0
+if args.is_empty then
+ n = 600
+else
+ n = args[0].to_i
+end
+
+print_all_colors
+print ""
+
+work(n, 3)
+work(n, 10)
nitlanguage / nit.git / commitdiff