| // Copyright 2023 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. | |
| package pathcache | |
| import ( | |
| "cmd/internal/par" | |
| "os/exec" | |
| ) | |
| var lookPathCache par.ErrCache[string, string] | |
| // LookPath wraps exec.LookPath and caches the result | |
| // which can be called by multiple Goroutines at the same time. | |
| func LookPath(file string) (path string, err error) { | |
| return lookPathCache.Do(file, | |
| func() (string, error) { | |
| return exec.LookPath(file) | |
| }) | |
| } | |