Imported Upstream version 60upstream/60

1 files changed, 43 insertions, 0 deletions

diff --git a/src/pkg/net/newpollserver.go b/src/pkg/net/newpollserver.go
new file mode 100644
index 000000000..427208701
--- /dev/null
+++ b/src/pkg/net/newpollserver.go
@@ -0,0 +1,43 @@
+// Copyright 2010 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.
+
+package net
+
+import (
+	"os"
+	"syscall"
+)
+
+func newPollServer() (s *pollServer, err os.Error) {
+	s = new(pollServer)
+	s.cr = make(chan *netFD, 1)
+	s.cw = make(chan *netFD, 1)
+	if s.pr, s.pw, err = os.Pipe(); err != nil {
+		return nil, err
+	}
+	var e int
+	if e = syscall.SetNonblock(s.pr.Fd(), true); e != 0 {
+		goto Errno
+	}
+	if e = syscall.SetNonblock(s.pw.Fd(), true); e != 0 {
+		goto Errno
+	}
+	if s.poll, err = newpollster(); err != nil {
+		goto Error
+	}
+	if _, err = s.poll.AddFD(s.pr.Fd(), 'r', true); err != nil {
+		s.poll.Close()
+		goto Error
+	}
+	s.pending = make(map[int]*netFD)
+	go s.Run()
+	return s, nil
+
+Errno:
+	err = &os.PathError{"setnonblock", s.pr.Name(), os.Errno(e)}
+Error:
+	s.pr.Close()
+	s.pw.Close()
+	return nil, err
+}