gtsocial-umbx

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race.go (907B)

      1 // Copyright 2019 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 race
      6 // +build race
      7 
      8 package socket
      9 
     10 import (
     11 	"runtime"
     12 	"unsafe"
     13 )
     14 
     15 // This package reads and writes the Message buffers using a
     16 // direct system call, which the race detector can't see.
     17 // These functions tell the race detector what is going on during the syscall.
     18 
     19 func (m *Message) raceRead() {
     20 	for _, b := range m.Buffers {
     21 		if len(b) > 0 {
     22 			runtime.RaceReadRange(unsafe.Pointer(&b[0]), len(b))
     23 		}
     24 	}
     25 	if b := m.OOB; len(b) > 0 {
     26 		runtime.RaceReadRange(unsafe.Pointer(&b[0]), len(b))
     27 	}
     28 }
     29 func (m *Message) raceWrite() {
     30 	for _, b := range m.Buffers {
     31 		if len(b) > 0 {
     32 			runtime.RaceWriteRange(unsafe.Pointer(&b[0]), len(b))
     33 		}
     34 	}
     35 	if b := m.OOB; len(b) > 0 {
     36 		runtime.RaceWriteRange(unsafe.Pointer(&b[0]), len(b))
     37 	}
     38 }