main.go

Documentation: cmd/cgo/internal/testplugin/testdata/issue25756

     1  // Copyright 2018 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  
     5  // Run the game of life in C using Go for parallelization.
     6  
     7  package main
     8  
     9  import (
    10  	"flag"
    11  	"fmt"
    12  	"plugin"
    13  )
    14  
    15  const MAXDIM = 100
    16  
    17  var dim = flag.Int("dim", 16, "board dimensions")
    18  var gen = flag.Int("gen", 10, "generations")
    19  
    20  func main() {
    21  	flag.Parse()
    22  
    23  	var a [MAXDIM * MAXDIM]int32
    24  	for i := 2; i < *dim; i += 8 {
    25  		for j := 2; j < *dim-3; j += 8 {
    26  			for y := 0; y < 3; y++ {
    27  				a[i**dim+j+y] = 1
    28  			}
    29  		}
    30  	}
    31  
    32  	p, err := plugin.Open("life.so")
    33  	if err != nil {
    34  		panic(err)
    35  	}
    36  	f, err := p.Lookup("Run")
    37  	if err != nil {
    38  		panic(err)
    39  	}
    40  	f.(func(int, int, int, []int32))(*gen, *dim, *dim, a[:])
    41  
    42  	for i := 0; i < *dim; i++ {
    43  		for j := 0; j < *dim; j++ {
    44  			if a[i**dim+j] == 0 {
    45  				fmt.Print(" ")
    46  			} else {
    47  				fmt.Print("X")
    48  			}
    49  		}
    50  		fmt.Print("\n")
    51  	}
    52  }
    53
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