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519474451a
This is a subset of https://golang.org/cl/20022 with only the copyright header lines, so the next CL will be smaller and more reviewable. Go policy has been single space after periods in comments for some time. The copyright header template at: https://golang.org/doc/contribute.html#copyright also uses a single space. Make them all consistent. Change-Id: Icc26c6b8495c3820da6b171ca96a74701b4a01b0 Reviewed-on: https://go-review.googlesource.com/20111 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
88 lines
1.7 KiB
Go
88 lines
1.7 KiB
Go
// Copyright 2013 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package net
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import (
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"syscall"
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"time"
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)
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type pollDesc struct {
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fd *netFD
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closing bool
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}
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func (pd *pollDesc) Init(fd *netFD) error { pd.fd = fd; return nil }
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func (pd *pollDesc) Close() {}
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func (pd *pollDesc) Evict() {
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pd.closing = true
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if pd.fd != nil {
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syscall.StopIO(pd.fd.sysfd)
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}
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}
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func (pd *pollDesc) Prepare(mode int) error {
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if pd.closing {
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return errClosing
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}
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return nil
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}
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func (pd *pollDesc) PrepareRead() error { return pd.Prepare('r') }
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func (pd *pollDesc) PrepareWrite() error { return pd.Prepare('w') }
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func (pd *pollDesc) Wait(mode int) error {
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if pd.closing {
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return errClosing
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}
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return errTimeout
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}
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func (pd *pollDesc) WaitRead() error { return pd.Wait('r') }
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func (pd *pollDesc) WaitWrite() error { return pd.Wait('w') }
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func (pd *pollDesc) WaitCanceled(mode int) {}
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func (pd *pollDesc) WaitCanceledRead() {}
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func (pd *pollDesc) WaitCanceledWrite() {}
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func (fd *netFD) setDeadline(t time.Time) error {
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return setDeadlineImpl(fd, t, 'r'+'w')
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}
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func (fd *netFD) setReadDeadline(t time.Time) error {
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return setDeadlineImpl(fd, t, 'r')
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}
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func (fd *netFD) setWriteDeadline(t time.Time) error {
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return setDeadlineImpl(fd, t, 'w')
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}
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func setDeadlineImpl(fd *netFD, t time.Time, mode int) error {
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d := t.UnixNano()
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if t.IsZero() {
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d = 0
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}
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if err := fd.incref(); err != nil {
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return err
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}
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switch mode {
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case 'r':
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syscall.SetReadDeadline(fd.sysfd, d)
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case 'w':
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syscall.SetWriteDeadline(fd.sysfd, d)
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case 'r' + 'w':
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syscall.SetReadDeadline(fd.sysfd, d)
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syscall.SetWriteDeadline(fd.sysfd, d)
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}
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fd.decref()
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return nil
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}
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