Function benchmarkDecode

flate/reader_test.go:42–76

(b *testing.B, testfile, level, n int)

}

func benchmarkDecode(b *testing.B, testfile, level, n int) {
	b.ReportAllocs()
	b.StopTimer()
	b.SetBytes(int64(n))
	buf0, err := os.ReadFile(testfiles[testfile])
	if err != nil {
		b.Fatal(err)
	}
	if len(buf0) == 0 {
		b.Fatalf("test file %q has no data", testfiles[testfile])
	}
	compressed := new(bytes.Buffer)
	w, err := NewWriter(compressed, level)
	if err != nil {
		b.Fatal(err)
	}
	for i := 0; i < n; i += len(buf0) {
		if len(buf0) > n-i {
			buf0 = buf0[:n-i]
		}
		io.Copy(w, bytes.NewReader(buf0))
	}
	w.Close()
	buf1 := compressed.Bytes()
	buf0, compressed, w = nil, nil, nil
	r := NewReader(bytes.NewReader(buf1))
	res := r.(Resetter)
	runtime.GC()
	b.StartTimer()

	for i := 0; i < b.N; i++ {
		_ = res.Reset(bytes.NewReader(buf1), nil)
		_, _ = io.Copy(io.Discard, r)
	}
}

// These short names are so that gofmt doesn't break the BenchmarkXxx function
// bodies below over multiple lines.