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Kmake/deps/v8/test/mjsunit/shared-memory/shared-struct-workers-optimized-code.js
2026-05-26 23:36:42 -07:00

41 lines
1.1 KiB
JavaScript

// Copyright 2022 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// Flags: --shared-string-table --harmony-struct --allow-natives-syntax
// Flags: --verify-heap
"use strict";
if (this.Worker) {
(function TestSharedStructOptimizedCode() {
let workerScript =
`onmessage = function({data:struct}) {
%PrepareFunctionForOptimization(writePayload);
for (let i = 0; i < 5; i++) writePayload(struct);
%OptimizeFunctionOnNextCall(writePayload);
writePayload(struct);
postMessage("done");
};
function writePayload(struct) {
for (let i = 0; i < 100; i++) {
struct.payload = struct.payload + 1;
}
}
postMessage("started");`;
let worker = new Worker(workerScript, { type: 'string' });
assertEquals("started", worker.getMessage());
let MyStruct = new SharedStructType(['payload']);
let struct = new MyStruct();
struct.payload = 0;
worker.postMessage(struct);
assertEquals("done", worker.getMessage());
worker.terminate();
})();
}