Source file src/golang.org/x/net/internal/socket/complete_dontwait.go

Documentation: golang.org/x/net/internal/socket

     1  // Copyright 2021 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 darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
     6  
     7  package socket
     8  
     9  import (
    10  	"syscall"
    11  )
    12  
    13  // ioComplete checks the flags and result of a syscall, to be used as return
    14  // value in a syscall.RawConn.Read or Write callback.
    15  func ioComplete(flags int, operr error) bool {
    16  	if flags&syscall.MSG_DONTWAIT != 0 {
    17  		// Caller explicitly said don't wait, so always return immediately.
    18  		return true
    19  	}
    20  	if operr == syscall.EAGAIN || operr == syscall.EWOULDBLOCK {
    21  		// No data available, block for I/O and try again.
    22  		return false
    23  	}
    24  	return true
    25  }
    26  

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