some deletions

[dotfiles/.git] / .config / coc / extensions / coc-go-data / tools / pkg / mod / honnef.co / go / tools@v0.0.1-2020.1.5 / internal / robustio / robustio_flaky.go

diff --git a/.config/coc/extensions/coc-go-data/tools/pkg/mod/honnef.co/go/tools@v0.0.1-2020.1.5/internal/robustio/robustio_flaky.go b/.config/coc/extensions/coc-go-data/tools/pkg/mod/honnef.co/go/tools@v0.0.1-2020.1.5/internal/robustio/robustio_flaky.go
deleted file mode 100644 (file)
index e0bf5b9..0000000
--- a/.config/coc/extensions/coc-go-data/tools/pkg/mod/honnef.co/go/tools@v0.0.1-2020.1.5/internal/robustio/robustio_flaky.go
+++ /dev/null
@@ -1,93 +0,0 @@
-// 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.
-
-// +build windows darwin
-
-package robustio
-
-import (
-       "io/ioutil"
-       "math/rand"
-       "os"
-       "syscall"
-       "time"
-)
-
-const arbitraryTimeout = 500 * time.Millisecond
-
-const ERROR_SHARING_VIOLATION = 32
-
-// retry retries ephemeral errors from f up to an arbitrary timeout
-// to work around filesystem flakiness on Windows and Darwin.
-func retry(f func() (err error, mayRetry bool)) error {
-       var (
-               bestErr     error
-               lowestErrno syscall.Errno
-               start       time.Time
-               nextSleep   time.Duration = 1 * time.Millisecond
-       )
-       for {
-               err, mayRetry := f()
-               if err == nil || !mayRetry {
-                       return err
-               }
-
-               if errno, ok := err.(syscall.Errno); ok && (lowestErrno == 0 || errno < lowestErrno) {
-                       bestErr = err
-                       lowestErrno = errno
-               } else if bestErr == nil {
-                       bestErr = err
-               }
-
-               if start.IsZero() {
-                       start = time.Now()
-               } else if d := time.Since(start) + nextSleep; d >= arbitraryTimeout {
-                       break
-               }
-               time.Sleep(nextSleep)
-               nextSleep += time.Duration(rand.Int63n(int64(nextSleep)))
-       }
-
-       return bestErr
-}
-
-// rename is like os.Rename, but retries ephemeral errors.
-//
-// On windows it wraps os.Rename, which (as of 2019-06-04) uses MoveFileEx with
-// MOVEFILE_REPLACE_EXISTING.
-//
-// Windows also provides a different system call, ReplaceFile,
-// that provides similar semantics, but perhaps preserves more metadata. (The
-// documentation on the differences between the two is very sparse.)
-//
-// Empirical error rates with MoveFileEx are lower under modest concurrency, so
-// for now we're sticking with what the os package already provides.
-func rename(oldpath, newpath string) (err error) {
-       return retry(func() (err error, mayRetry bool) {
-               err = os.Rename(oldpath, newpath)
-               return err, isEphemeralError(err)
-       })
-}
-
-// readFile is like ioutil.ReadFile, but retries ephemeral errors.
-func readFile(filename string) ([]byte, error) {
-       var b []byte
-       err := retry(func() (err error, mayRetry bool) {
-               b, err = ioutil.ReadFile(filename)
-
-               // Unlike in rename, we do not retry errFileNotFound here: it can occur
-               // as a spurious error, but the file may also genuinely not exist, so the
-               // increase in robustness is probably not worth the extra latency.
-
-               return err, isEphemeralError(err) && err != errFileNotFound
-       })
-       return b, err
-}
-
-func removeAll(path string) error {
-       return retry(func() (err error, mayRetry bool) {
-               err = os.RemoveAll(path)
-               return err, isEphemeralError(err)
-       })
-}