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improve: more smart conditions of string decoding functions #39
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,50 +1,45 @@ | ||
| /* eslint-disable no-console */ | ||
| import { utf8Encode, utf8Count, utf8Decode } from "../src/utils/utf8"; | ||
| import { utf8Encode, utf8Count, utf8DecodeJs, utf8DecodeTD } from "../src/utils/utf8"; | ||
| import { utf8DecodeWasm } from "../src/wasmFunctions"; | ||
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| // @ts-ignore | ||
| import Benchmark from "benchmark"; | ||
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| const textDecoder = new TextDecoder(); | ||
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| const dataSet = [10, 100, 200, 1_000, 10_000, 100_000].map((n) => { | ||
| return "a".repeat(n); | ||
| }); | ||
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| for (const str of dataSet) { | ||
| const byteLength = utf8Count(str); | ||
| const bytes = new Uint8Array(new ArrayBuffer(byteLength)); | ||
| utf8Encode(str, bytes, 0); | ||
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| console.log(`\n## string length=${str.length} byteLength=${byteLength}\n`); | ||
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| const suite = new Benchmark.Suite(); | ||
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| const N = Math.round(100_0000 / str.length); | ||
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| // use the result to avoid void-context optimizations | ||
| let count = 0; | ||
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| suite.add("utf8Decode", () => { | ||
| if (utf8Decode(bytes, 0, byteLength) !== str) { | ||
| throw new Error("wrong result!"); | ||
| } | ||
| }); | ||
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| suite.add("utf8DecodeWasm", () => { | ||
| if (utf8DecodeWasm(bytes, 0, byteLength) !== str) { | ||
| throw new Error("wrong result!"); | ||
| } | ||
| }); | ||
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| suite.add("TextDecoder", () => { | ||
| if (textDecoder.decode(bytes.subarray(0, byteLength)) !== str) { | ||
| throw new Error("wrong result!"); | ||
| } | ||
| }); | ||
| suite.on("cycle", (event: any) => { | ||
| console.log(String(event.target)); | ||
| for (const baseStr of ["A", "あ", "🌏"]) { | ||
| const dataSet = [10, 100, 200, 1_000, 10_000, 100_000].map((n) => { | ||
| return baseStr.repeat(n); | ||
| }); | ||
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| suite.run(); | ||
| for (const str of dataSet) { | ||
| const byteLength = utf8Count(str); | ||
| const bytes = new Uint8Array(new ArrayBuffer(byteLength)); | ||
| utf8Encode(str, bytes, 0); | ||
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| console.log(`\n## string "${baseStr}" x ${str.length} (byteLength=${byteLength})\n`); | ||
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| const suite = new Benchmark.Suite(); | ||
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| suite.add("utf8DecodeJs", () => { | ||
| if (utf8DecodeJs(bytes, 0, byteLength) !== str) { | ||
| throw new Error("wrong result!"); | ||
| } | ||
| }); | ||
|
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| suite.add("utf8DecodeWasm", () => { | ||
| if (utf8DecodeWasm(bytes, 0, byteLength) !== str) { | ||
| throw new Error("wrong result!"); | ||
| } | ||
| }); | ||
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| suite.add("TextDecoder", () => { | ||
| if (utf8DecodeTD(bytes, 0, byteLength) !== str) { | ||
| throw new Error("wrong result!"); | ||
| } | ||
| }); | ||
| suite.on("cycle", (event: any) => { | ||
| console.log(String(event.target)); | ||
| }); | ||
|
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| suite.run(); | ||
| } | ||
| } | ||
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To benchmark them separately, I have split utf8decode functions.