1// Copyright (C) 2018 The Android Open Source Project
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//      http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15import * as init_trace_processor from '../gen/trace_processor';
16
17import {WasmBridge, WasmBridgeRequest} from './wasm_bridge';
18
19// tslint:disable no-any
20// Proxy all messages to WasmBridge#callWasm.
21const anySelf = (self as any);
22
23// Messages can arrive before we are initialized, queue these for later.
24const msgQueue: MessageEvent[] = [];
25anySelf.onmessage = (msg: MessageEvent) => {
26  msgQueue.push(msg);
27};
28
29const bridge = new WasmBridge(init_trace_processor);
30bridge.whenInitialized.then(() => {
31  const handleMsg = (msg: MessageEvent) => {
32    const request: WasmBridgeRequest = msg.data;
33    anySelf.postMessage(bridge.callWasm(request));
34  };
35
36  // Dispatch queued messages.
37  let msg;
38  while (msg = msgQueue.shift()) {
39    handleMsg(msg);
40  }
41
42  anySelf.onmessage = handleMsg;
43});
44