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wireguard-go/rwcancel/fdset.go
David Crawshaw 224bc9e60c rwcancel: no-op builds for windows and darwin
This lets us include the package on those platforms in a
followup commit where we split out a conn package from device.
It also lets us run `go test ./...` when developing on macOS.

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
2020-03-30 18:41:39 +11:00

25 lines
447 B
Go

// +build !windows
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
*/
package rwcancel
import "golang.org/x/sys/unix"
type fdSet struct {
unix.FdSet
}
func (fdset *fdSet) set(i int) {
bits := 32 << (^uint(0) >> 63)
fdset.Bits[i/bits] |= 1 << uint(i%bits)
}
func (fdset *fdSet) check(i int) bool {
bits := 32 << (^uint(0) >> 63)
return (fdset.Bits[i/bits] & (1 << uint(i%bits))) != 0
}