[go-nuts] how to pass c array to golang efficiently

[hui zhang]

I build go as a so called by c program
how implement this Send function to make c  short array to be used in go as 
[]int16 
*efficiently *
of course ,  I can assign it one by one , but it is not an efficient way

package main

import "C"
import "fmt"

//export Summ
func Summ(x, y int) int {
   return x + y
}

//export Hello
func Hello(str string) {
   fmt.Printf("Hello: %s\n", str)
}

//export Send
func Send(confid string, len int, pcm *C.short) {
   //put c.short array to int16 slice/array efficiently , how ?
   // memcopy ?
}

func main() {
   // We need the main function to make possible
   // CGO compiler to compile the package as C shared/archive library
}


go build -buildmode=c-shared -o ws.so ws.go

#include <stdio.h>
#include "ws.h"

int main()
{
    printf("This is exptest application.\n");
    GoString str = {"Hi JXES", 7};
    Hello(str);
    printf("sum: %lld\n", Summ(2, 3));

    short a[] = {1,2,3,4,5,6};
    Send(str,6,a);
    return 0;
}


gcc -o cms cms.c ws.so



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