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02166a9802
A sync.Pool is used to reduce allocations of the msghdr struct. When using a struct obtained from the pool, the fields need to be cleared. Fixes golang/go#54693. Change-Id: Ie693979abf3aa6bc3c834b9558c5029b376326e6 Reviewed-on: https://go-review.googlesource.com/c/net/+/425915 Run-TryBot: Ian Lance Taylor <iant@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Damien Neil <dneil@google.com> Auto-Submit: Ian Lance Taylor <iant@google.com>
37 lines
740 B
Go
37 lines
740 B
Go
// Copyright 2017 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 socket
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import "unsafe"
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func (h *msghdr) pack(vs []iovec, bs [][]byte, oob []byte, sa []byte) {
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for i := range vs {
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vs[i].set(bs[i])
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}
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h.setIov(vs)
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if len(oob) > 0 {
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h.setControl(oob)
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}
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if sa != nil {
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h.Name = (*byte)(unsafe.Pointer(&sa[0]))
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h.Namelen = uint32(len(sa))
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}
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}
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func (h *msghdr) name() []byte {
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if h.Name != nil && h.Namelen > 0 {
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return (*[sizeofSockaddrInet6]byte)(unsafe.Pointer(h.Name))[:h.Namelen]
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}
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return nil
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}
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func (h *msghdr) controllen() int {
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return int(h.Controllen)
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}
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func (h *msghdr) flags() int {
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return int(h.Flags)
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}
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