2010-06-28 14:58:56 -06:00
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// Copyright 2010 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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build: add build comments to core packages
The go/build package already recognizes
system-specific file names like
mycode_darwin.go
mycode_darwin_386.go
mycode_386.s
However, it is also common to write files that
apply to multiple architectures, so a recent CL added
to go/build the ability to process comments
listing a set of conditions for building. For example:
// +build darwin freebsd openbsd/386
says that this file should be compiled only on
OS X, FreeBSD, or 32-bit x86 OpenBSD systems.
These conventions are not yet documented
(hence this long CL description).
This CL adds build comments to the multi-system
files in the core library, a step toward making it
possible to use go/build to build them.
With this change go/build can handle crypto/rand,
exec, net, path/filepath, os/user, and time.
os and syscall need additional adjustments.
R=golang-dev, r, gri, r, gustavo
CC=golang-dev
https://golang.org/cl/5011046
2011-09-15 14:48:57 -06:00
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// +build darwin freebsd linux openbsd
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2010-06-28 14:58:56 -06:00
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package net
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import (
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"os"
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"syscall"
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)
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2011-11-01 20:05:34 -06:00
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func newPollServer() (s *pollServer, err error) {
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2010-06-28 14:58:56 -06:00
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s = new(pollServer)
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s.cr = make(chan *netFD, 1)
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s.cw = make(chan *netFD, 1)
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if s.pr, s.pw, err = os.Pipe(); err != nil {
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return nil, err
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}
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2011-11-13 20:44:52 -07:00
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if err = syscall.SetNonblock(s.pr.Fd(), true); err != nil {
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2011-06-17 04:07:13 -06:00
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goto Errno
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2010-06-28 14:58:56 -06:00
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}
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2011-11-13 20:44:52 -07:00
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if err = syscall.SetNonblock(s.pw.Fd(), true); err != nil {
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2010-06-28 14:58:56 -06:00
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goto Errno
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}
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if s.poll, err = newpollster(); err != nil {
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goto Error
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}
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2011-03-28 13:39:09 -06:00
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if _, err = s.poll.AddFD(s.pr.Fd(), 'r', true); err != nil {
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2010-06-28 14:58:56 -06:00
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s.poll.Close()
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goto Error
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}
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s.pending = make(map[int]*netFD)
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go s.Run()
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return s, nil
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2011-06-17 04:07:13 -06:00
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Errno:
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2011-11-13 20:44:52 -07:00
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err = &os.PathError{"setnonblock", s.pr.Name(), err}
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2011-06-17 04:07:13 -06:00
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Error:
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s.pr.Close()
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s.pw.Close()
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return nil, err
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2010-06-28 14:58:56 -06:00
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}
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