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