go errno_windows 源码
golang errno_windows 代码
文件路径：/src/internal/poll/errno_windows.go
// Copyright 2019 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 windows
package poll
import "syscall"
// Do the interface allocations only once for common
// Errno values.
var (
errERROR_IO_PENDING error = syscall.Errno(syscall.ERROR_IO_PENDING)
)
// ErrnoErr returns common boxed Errno values, to prevent
// allocations at runtime.
func errnoErr(e syscall.Errno) error {
switch e {
case 0:
return nil
case syscall.ERROR_IO_PENDING:
return errERROR_IO_PENDING
}
// TODO: add more here, after collecting data on the common
// error values see on Windows. (perhaps when running
// all.bat?)
return e
}
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