26 lines
734 B
Go
26 lines
734 B
Go
// Copyright 2021 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 darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
|
|
|
|
package socket
|
|
|
|
import (
|
|
"syscall"
|
|
)
|
|
|
|
// ioComplete checks the flags and result of a syscall, to be used as return
|
|
// value in a syscall.RawConn.Read or Write callback.
|
|
func ioComplete(flags int, operr error) bool {
|
|
if flags&syscall.MSG_DONTWAIT != 0 {
|
|
// Caller explicitly said don't wait, so always return immediately.
|
|
return true
|
|
}
|
|
if operr == syscall.EAGAIN || operr == syscall.EWOULDBLOCK {
|
|
// No data available, block for I/O and try again.
|
|
return false
|
|
}
|
|
return true
|
|
}
|