| // Copyright 2017 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. |
| |
| //go:build linux |
| // +build linux |
| |
| package socket |
| |
| import ( |
| "net" |
| "os" |
| ) |
| |
| func (c *Conn) recvMsgs(ms []Message, flags int) (int, error) { |
| for i := range ms { |
| ms[i].raceWrite() |
| } |
| packer := defaultMmsghdrsPool.Get() |
| defer defaultMmsghdrsPool.Put(packer) |
| var parseFn func([]byte, string) (net.Addr, error) |
| if c.network != "tcp" { |
| parseFn = parseInetAddr |
| } |
| hs := packer.pack(ms, parseFn, nil) |
| var operr error |
| var n int |
| fn := func(s uintptr) bool { |
| n, operr = recvmmsg(s, hs, flags) |
| return ioComplete(flags, operr) |
| } |
| if err := c.c.Read(fn); err != nil { |
| return n, err |
| } |
| if operr != nil { |
| return n, os.NewSyscallError("recvmmsg", operr) |
| } |
| if err := hs[:n].unpack(ms[:n], parseFn, c.network); err != nil { |
| return n, err |
| } |
| return n, nil |
| } |
| |
| func (c *Conn) sendMsgs(ms []Message, flags int) (int, error) { |
| for i := range ms { |
| ms[i].raceRead() |
| } |
| packer := defaultMmsghdrsPool.Get() |
| defer defaultMmsghdrsPool.Put(packer) |
| var marshalFn func(net.Addr, []byte) int |
| if c.network != "tcp" { |
| marshalFn = marshalInetAddr |
| } |
| hs := packer.pack(ms, nil, marshalFn) |
| var operr error |
| var n int |
| fn := func(s uintptr) bool { |
| n, operr = sendmmsg(s, hs, flags) |
| return ioComplete(flags, operr) |
| } |
| if err := c.c.Write(fn); err != nil { |
| return n, err |
| } |
| if operr != nil { |
| return n, os.NewSyscallError("sendmmsg", operr) |
| } |
| if err := hs[:n].unpack(ms[:n], nil, ""); err != nil { |
| return n, err |
| } |
| return n, nil |
| } |