Improve perf start/stop recording

dist/indexeddb-backend.js

@@ -829,17 +829,35 @@ class IndexedDBBackend {
 
  async init() {
  let argBuffer = new SharedArrayBuffer(4096 * 9);
- writer = new Writer(argBuffer, { name: 'args (backend)', debug: false });
+ this.writer = new Writer(argBuffer, {
+ name: 'args (backend)',
+ debug: false
+ });
 
  let resultBuffer = new SharedArrayBuffer(4096 * 9);
- reader = new Reader(resultBuffer, { name: 'results', debug: false });
+ this.reader = new Reader(resultBuffer, { name: 'results', debug: false });
 
  await startWorker(argBuffer, resultBuffer);
  }
 
  createFile(filename) {
  return new File(filename, this.defaultBlockSize, new FileOps(filename));
  }
+
+ startProfile() {
+ writer.string('profile-start');
+ writer.finalize();
+ reader.int32();
+ reader.done();
+ }
+
+ stopProfile() {
+ end();
+ writer.string('profile-end');
+ writer.finalize();
+ reader.int32();
+ reader.done();
+ }
 }
 
 export default IndexedDBBackend;

package.json

@@ -1,6 +1,6 @@
 {
  "name": "absurd-sql.js-backend",
- "version": "0.0.10",
+ "version": "0.0.12",
  "main": "./dist/index.js",
  "scripts": {
  "build": "rm -r dist && rollup -c rollup.config.js",

src/blocked-file.js

@@ -333,7 +333,6 @@ export class File {
  }
 
  startStats() {
- perf.start();
  this.ops.startStats();
  }
 

src/indexeddb/backend.js

@@ -1,5 +1,6 @@
 import { Reader, Writer } from './shared-channel';
 import { File } from '../blocked-file';
+import * as perf from '../perf';
 
 // These are temporarily global, but will be easy to clean up later
 let reader, writer;
@@ -233,15 +234,34 @@ export default class IndexedDBBackend {
 
  async init() {
  let argBuffer = new SharedArrayBuffer(4096 * 9);
- writer = new Writer(argBuffer, { name: 'args (backend)', debug: false });
+ this.writer = new Writer(argBuffer, {
+ name: 'args (backend)',
+ debug: false
+ });
 
  let resultBuffer = new SharedArrayBuffer(4096 * 9);
- reader = new Reader(resultBuffer, { name: 'results', debug: false });
+ this.reader = new Reader(resultBuffer, { name: 'results', debug: false });
 
  await startWorker(argBuffer, resultBuffer);
  }
 
  createFile(filename) {
  return new File(filename, this.defaultBlockSize, new FileOps(filename));
  }
+
+ startProfile() {
+ perf.start();
+ writer.string('profile-start');
+ writer.finalize();
+ reader.int32();
+ reader.done();
+ }
+
+ stopProfile() {
+ perf.end();
+ writer.string('profile-end');
+ writer.finalize();
+ reader.int32();
+ reader.done();
+ }
 }

src/indexeddb/main-thread.js

@@ -56,10 +56,12 @@ export function initBackend(worker) {
  listenForPerfData(worker);
 
  worker.addEventListener('message', e => {
- if (e.data.type === 'spawn-idb-worker') {
- startWorkerFromMain(e.data.argBuffer, e.data.resultBuffer).then(() => {
- worker.postMessage({ type: 'worker-ready' });
- });
+ switch (e.data.type) {
+ case 'spawn-idb-worker':
+ startWorkerFromMain(e.data.argBuffer, e.data.resultBuffer).then(() => {
+ worker.postMessage({ type: 'worker-ready' });
+ });
+ break;
  }
  });
 }

src/indexeddb/worker.js

@@ -348,6 +348,7 @@ async function loadDb(name) {
 function closeDb(name) {
  let openDb = openDbs.get(name);
  if (openDb) {
+ console.log('closing db');
  openDb.close();
  openDbs.delete(name);
  }
@@ -603,7 +604,7 @@ async function listen(reader, writer) {
  let method = reader.string();
 
  switch (method) {
- case 'stats-start': {
+ case 'profile-start': {
  reader.done();
 
  perf.start();
@@ -614,7 +615,7 @@ async function listen(reader, writer) {
  break;
  }
 
- case 'stats': {
+ case 'profile-end': {
  reader.done();
 
  await perf.end();