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e2921e188a
1. ParseFiles (in util.go) parses each file in its own goroutine. 2. (*Importer).LoadPackage asynchronously prefetches the import graph by scanning the imports of each loaded package and calling LoadPackage on each one. LoadPackage is now thread-safe and idempotent: it uses a condition variable per package; the first goroutine to request a package becomes responsible for loading it and broadcasts to the others (waiting) when it becomes ready. ssadump runs 34% faster when loading the oracle. Also, refactorings: - delete SourceLoader mechanism; just expose go/build.Context directly. - CreateSourcePackage now also returns an error directly, rather than via PackageInfo.Err, since every client wants that. R=crawshaw CC=golang-dev https://golang.org/cl/13509045 |
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