rawconn_mmsg.go raw

   1  // Copyright 2017 The Go Authors. All rights reserved.
   2  // Use of this source code is governed by a BSD-style
   3  // license that can be found in the LICENSE file.
   4  
   5  //go:build linux
   6  
   7  package socket
   8  
   9  import (
  10  	"net"
  11  )
  12  
  13  func (c *Conn) recvMsgs(ms []Message, flags int) (int, error) {
  14  	for i := range ms {
  15  		ms[i].raceWrite()
  16  	}
  17  	tmps := defaultMmsgTmpsPool.Get()
  18  	defer defaultMmsgTmpsPool.Put(tmps)
  19  	var parseFn func([]byte, string) (net.Addr, error)
  20  	if c.network != "tcp" {
  21  		parseFn = parseInetAddr
  22  	}
  23  	hs := tmps.packer.pack(ms, parseFn, nil)
  24  	n, err := tmps.syscaller.recvmmsg(c.c, hs, flags)
  25  	if err != nil {
  26  		return n, err
  27  	}
  28  	if err := hs[:n].unpack(ms[:n], parseFn, c.network); err != nil {
  29  		return n, err
  30  	}
  31  	return n, nil
  32  }
  33  
  34  func (c *Conn) sendMsgs(ms []Message, flags int) (int, error) {
  35  	for i := range ms {
  36  		ms[i].raceRead()
  37  	}
  38  	tmps := defaultMmsgTmpsPool.Get()
  39  	defer defaultMmsgTmpsPool.Put(tmps)
  40  	var marshalFn func(net.Addr, []byte) int
  41  	if c.network != "tcp" {
  42  		marshalFn = marshalInetAddr
  43  	}
  44  	hs := tmps.packer.pack(ms, nil, marshalFn)
  45  	n, err := tmps.syscaller.sendmmsg(c.c, hs, flags)
  46  	if err != nil {
  47  		return n, err
  48  	}
  49  	if err := hs[:n].unpack(ms[:n], nil, ""); err != nil {
  50  		return n, err
  51  	}
  52  	return n, nil
  53  }
  54