文件操作 - fdset.go
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文件: /usr/share/go-1.23/src/cmd/vendor/golang.org/x/sys/unix/fdset.go
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// Copyright 2019 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. //go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris || zos package unix // Set adds fd to the set fds. func (fds *FdSet) Set(fd int) { fds.Bits[fd/NFDBITS] |= (1 << (uintptr(fd) % NFDBITS)) } // Clear removes fd from the set fds. func (fds *FdSet) Clear(fd int) { fds.Bits[fd/NFDBITS] &^= (1 << (uintptr(fd) % NFDBITS)) } // IsSet returns whether fd is in the set fds. func (fds *FdSet) IsSet(fd int) bool { return fds.Bits[fd/NFDBITS]&(1<<(uintptr(fd)%NFDBITS)) != 0 } // Zero clears the set fds. func (fds *FdSet) Zero() { for i := range fds.Bits { fds.Bits[i] = 0 } }
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