From 14bb08c1df8db9ec6c8a05520d4eee67971235d9 Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Thu, 27 Sep 2018 20:03:23 +0200 Subject: mod tidy --- vendor/golang.org/x/net/netutil/listen.go | 74 ------------------------------- 1 file changed, 74 deletions(-) delete mode 100644 vendor/golang.org/x/net/netutil/listen.go (limited to 'vendor/golang.org/x/net/netutil') diff --git a/vendor/golang.org/x/net/netutil/listen.go b/vendor/golang.org/x/net/netutil/listen.go deleted file mode 100644 index cee46e3..0000000 --- a/vendor/golang.org/x/net/netutil/listen.go +++ /dev/null @@ -1,74 +0,0 @@ -// Copyright 2013 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 netutil provides network utility functions, complementing the more -// common ones in the net package. -package netutil // import "golang.org/x/net/netutil" - -import ( - "net" - "sync" -) - -// LimitListener returns a Listener that accepts at most n simultaneous -// connections from the provided Listener. -func LimitListener(l net.Listener, n int) net.Listener { - return &limitListener{ - Listener: l, - sem: make(chan struct{}, n), - done: make(chan struct{}), - } -} - -type limitListener struct { - net.Listener - sem chan struct{} - closeOnce sync.Once // ensures the done chan is only closed once - done chan struct{} // no values sent; closed when Close is called -} - -// acquire acquires the limiting semaphore. Returns true if successfully -// accquired, false if the listener is closed and the semaphore is not -// acquired. -func (l *limitListener) acquire() bool { - select { - case <-l.done: - return false - case l.sem <- struct{}{}: - return true - } -} -func (l *limitListener) release() { <-l.sem } - -func (l *limitListener) Accept() (net.Conn, error) { - acquired := l.acquire() - // If the semaphore isn't acquired because the listener was closed, expect - // that this call to accept won't block, but immediately return an error. - c, err := l.Listener.Accept() - if err != nil { - if acquired { - l.release() - } - return nil, err - } - return &limitListenerConn{Conn: c, release: l.release}, nil -} - -func (l *limitListener) Close() error { - err := l.Listener.Close() - l.closeOnce.Do(func() { close(l.done) }) - return err -} - -type limitListenerConn struct { - net.Conn - releaseOnce sync.Once - release func() -} - -func (l *limitListenerConn) Close() error { - err := l.Conn.Close() - l.releaseOnce.Do(l.release) - return err -} -- cgit v1.2.3