github.com/Andyfoo/golang/x/net@v0.0.0-20190901054642-57c1bf301704/internal/socket/sys_bsdvar.go (about)

     1  // Copyright 2017 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  // +build aix freebsd netbsd openbsd
     6  
     7  package socket
     8  
     9  import (
    10  	"runtime"
    11  	"unsafe"
    12  )
    13  
    14  func probeProtocolStack() int {
    15  	if (runtime.GOOS == "netbsd" || runtime.GOOS == "openbsd") && runtime.GOARCH == "arm" {
    16  		return 8
    17  	}
    18  	if runtime.GOOS == "aix" {
    19  		return 1
    20  	}
    21  	var p uintptr
    22  	return int(unsafe.Sizeof(p))
    23  }