test/misc/bench.ts

// Copyright 2015 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// eslint-disable-next-line @typescript-eslint/no-var-requires
const v8debugapi = require('../src/v8debugapi.js');
const config = require('../config.js').default;
import * as assert from 'assert';
// eslint-disable-next-line @typescript-eslint/no-var-requires
const pretty = require('pretty-hrtime');
// eslint-disable-next-line @typescript-eslint/no-var-requires
const fib = require('./bench-code.js');

// tslint:disable:variable-name
// eslint-disable-next-line @typescript-eslint/no-var-requires
const Logger = require('../src/logger.js');
const logger = new Logger(config.logLevel);
assert.ok(v8debugapi.init(logger, config));

function bench(message: {}, f: Function) {
  let t = process.hrtime();
  f();
  t = process.hrtime(t);
  console.log(message + ': ' + pretty(t));
}

bench('100x set', () => {
  for (let i = 0; i < 100; i++) {
    const bp = {id: 'fake-breakpoint', location: {path: __filename, line: 4}};
    v8debugapi.set(bp);
    v8debugapi.clear(bp);
  }
});

bench('100x set + validate', () => {
  for (let i = 0; i < 100; i++) {
    const bp = {
      id: 'breakpoint1',
      location: {path: __filename, line: 4},
      condition: 'x === 1, 2, {f: 2}, process.env, (this ? this : this)',
    };
    v8debugapi.set(bp);
    v8debugapi.clear(bp);
  }
});

bench('fib(29)', () => {
  fib(29);
});

// FIXME: the following test isn't really working because of a V8 bug.
(() => {
  const bp = {
    id: 'breakpoint1',
    location: {path: __filename, line: 4},
    condition: 'n > 50000',
  };
  v8debugapi.set(bp);
  bench('fib(29) with breakpoint: ', () => {
    fib(29);
  });
  v8debugapi.clear(bp);
})();