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// Copyright 2018 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: --allow-natives-syntax --expose-gc
load("test/mjsunit/wasm/wasm-module-builder.js");
(function TestPostInterpretedModule() {
let builder = new WasmModuleBuilder();
let add = builder.addFunction("add", kSig_i_ii)
.addBody([kExprLocalGet, 0, kExprLocalGet, 1, kExprI32Add])
.exportFunc();
// Trigger a GC to ensure that the underlying native module is not a cached
// one from a previous run, with functions already redirected to the
// interpreter. This is not observable from pure JavaScript, but this is
// observable with the internal runtime functions used in this test.
gc();
let module = builder.toModule();
let instance = new WebAssembly.Instance(module);
let exp = instance.exports;
let workerScript = `
var instance = null;
onmessage = function(message) {
try {
if (message.command == 'module') {
instance = new WebAssembly.Instance(message.module);
postMessage('OK');
}
if (message.command == 'call') {
let result = instance.exports.add(40, 2);
postMessage(result);
}
} catch(e) {
postMessage('ERROR: ' + e);
}
}
`;
let worker = new Worker(workerScript, {type: 'string'});
// Call method without using the interpreter.
var initial_interpreted = %WasmNumInterpretedCalls(instance);
assertEquals(23, exp.add(20, 3));
assertEquals(initial_interpreted + 0, %WasmNumInterpretedCalls(instance));
// Send module to the worker, still not interpreting.
worker.postMessage({ command:'module', module:module });
assertEquals('OK', worker.getMessage());
worker.postMessage({ command:'call' });
assertEquals(42, worker.getMessage());
assertEquals(initial_interpreted + 0, %WasmNumInterpretedCalls(instance));
// Switch to the interpreter and call method.
%RedirectToWasmInterpreter(instance, add.index);
assertEquals(23, exp.add(20, 3));
assertEquals(initial_interpreted + 1, %WasmNumInterpretedCalls(instance));
// Let worker call interpreted function.
worker.postMessage({ command:'call' });
assertEquals(42, worker.getMessage());
assertEquals(initial_interpreted + 1, %WasmNumInterpretedCalls(instance));
// All done.
worker.terminate();
})();
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