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cmd/go: modload should use a read-write lock to improve concurrency

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Change-Id: I3f9bc8a2459059a924a04fa02794e258957819b5
GitHub-Last-Rev: 6ad6f6a70e
GitHub-Pull-Request: golang/go#74311
Reviewed-on: https://go-review.googlesource.com/c/go/+/683215
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Ian Alexander <jitsu@google.com>
Reviewed-by: Michael Matloob <matloob@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
Roy Reznik 2025-06-22 12:37:23 +00:00 • committed by Michael Matloob
parent e666972a67
commit 4ab1aec007
1 changed files with 3 additions and 3 deletions
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6
src/cmd/go/internal/modload/init.go
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@ -149,7 +149,7 @@ type MainModuleSet struct {
// highest replaced version of each module path; empty string for wildcard-only replacements
highestReplaced map[string]string
indexMu sync.Mutex
indexMu sync.RWMutex
indices map[module.Version]*modFileIndex
}
@ -228,8 +228,8 @@ func (mms *MainModuleSet) GetSingleIndexOrNil() *modFileIndex {
}
func (mms *MainModuleSet) Index(m module.Version) *modFileIndex {
mms.indexMu.Lock()
defer mms.indexMu.Unlock()
mms.indexMu.RLock()
defer mms.indexMu.RUnlock()
return mms.indices[m]
}