1 // skip 2 3 // Copyright 2010 The Go Authors. All rights reserved. 4 // Use of this source code is governed by a BSD-style 5 // license that can be found in the LICENSE file. 6 7 package life 8 9 // #include "life.h" 10 import "C" 11 12 import "unsafe" 13 14 func Run(gen, x, y int, a []int32) { 15 n := make([]int32, x*y) 16 for i := 0; i < gen; i++ { 17 C.Step(C.int(x), C.int(y), (*C.int)(unsafe.Pointer(&a[0])), (*C.int)(unsafe.Pointer(&n[0]))) 18 copy(a, n) 19 } 20 } 21 22 // Keep the channels visible from Go. 23 var chans [4]chan bool 24 25 //export GoStart 26 // Double return value is just for testing. 27 func GoStart(i, xdim, ydim, xstart, xend, ystart, yend C.int, a *C.int, n *C.int) (int, int) { 28 c := make(chan bool, int(C.MYCONST)) 29 go func() { 30 C.DoStep(xdim, ydim, xstart, xend, ystart, yend, a, n) 31 c <- true 32 }() 33 chans[i] = c 34 return int(i), int(i + 100) 35 } 36 37 //export GoWait 38 func GoWait(i C.int) { 39 <-chans[i] 40 chans[i] = nil 41 } 42
