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