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1 // skip
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2
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3 // Copyright 2010 The Go Authors. All rights reserved.
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4 // Use of this source code is governed by a BSD-style
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5 // license that can be found in the LICENSE file.
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6
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7 package life
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8
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9 // #include "life.h"
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10 import "C"
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11
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12 import "unsafe"
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13
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14 func Run(gen, x, y int, a []int32) {
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15 n := make([]int32, x*y)
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16 for i := 0; i < gen; i++ {
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17 C.Step(C.int(x), C.int(y), (*C.int)(unsafe.Pointer(&a[0])), (*C.int)(unsafe.Pointer(&n[0])))
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18 copy(a, n)
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19 }
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20 }
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21
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22 // Keep the channels visible from Go.
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23 var chans [4]chan bool
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24
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25 //export GoStart
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26 // Double return value is just for testing.
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27 func GoStart(i, xdim, ydim, xstart, xend, ystart, yend C.int, a *C.int, n *C.int) (int, int) {
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28 c := make(chan bool, int(C.MYCONST))
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29 go func() {
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30 C.DoStep(xdim, ydim, xstart, xend, ystart, yend, a, n)
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31 c <- true
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32 }()
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33 chans[i] = c
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34 return int(i), int(i + 100)
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35 }
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36
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37 //export GoWait
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38 func GoWait(i C.int) {
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39 <-chans[i]
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40 chans[i] = nil
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41 }
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