1// Copyright 2019 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//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris || zos 6// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris zos 7 8package unix 9 10// Set adds fd to the set fds. 11func (fds *FdSet) Set(fd int) { 12 fds.Bits[fd/NFDBITS] |= (1 << (uintptr(fd) % NFDBITS)) 13} 14 15// Clear removes fd from the set fds. 16func (fds *FdSet) Clear(fd int) { 17 fds.Bits[fd/NFDBITS] &^= (1 << (uintptr(fd) % NFDBITS)) 18} 19 20// IsSet returns whether fd is in the set fds. 21func (fds *FdSet) IsSet(fd int) bool { 22 return fds.Bits[fd/NFDBITS]&(1<<(uintptr(fd)%NFDBITS)) != 0 23} 24 25// Zero clears the set fds. 26func (fds *FdSet) Zero() { 27 for i := range fds.Bits { 28 fds.Bits[i] = 0 29 } 30} 31