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go/scanner: improve variety in benchmarks for file scanning
BenchmarkScanFile was scanning scanner.go, which makes comparison difficult for a CL modifying that file. That file is also is not necessarily representative syntax. Add a few additional files as subtests to provide a larger variety of metrics. Change-Id: Ib78303c2546debd84a0b5478ae438ba891d9e6e9 Reviewed-on: https://go-review.googlesource.com/c/go/+/308610 Trust: Robert Findley <rfindley@google.com> Run-TryBot: Robert Findley <rfindley@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Robert Griesemer <gri@golang.org>
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@ -889,12 +889,21 @@ func BenchmarkScan(b *testing.B) {
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}
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}
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}
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}
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func BenchmarkScanFile(b *testing.B) {
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func BenchmarkScanFiles(b *testing.B) {
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// Scan a few arbitrary large files, and one small one, to provide some
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// variety in benchmarks.
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for _, p := range []string{
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"go/types/expr.go",
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"go/parser/parser.go",
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"net/http/server.go",
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"go/scanner/errors.go",
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} {
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b.Run(p, func(b *testing.B) {
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b.StopTimer()
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b.StopTimer()
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const filename = "scanner.go"
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filename := filepath.Join("..", "..", filepath.FromSlash(p))
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src, err := os.ReadFile(filename)
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src, err := os.ReadFile(filename)
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if err != nil {
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if err != nil {
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panic(err)
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b.Fatal(err)
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}
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}
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fset := token.NewFileSet()
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fset := token.NewFileSet()
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file := fset.AddFile(filename, fset.Base(), len(src))
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file := fset.AddFile(filename, fset.Base(), len(src))
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@ -910,6 +919,8 @@ func BenchmarkScanFile(b *testing.B) {
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}
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}
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}
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}
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}
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}
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})
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}
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}
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}
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func TestNumbers(t *testing.T) {
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func TestNumbers(t *testing.T) {
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