78defee492
This extends the existing wasm profiling test to also check that wasm-to-js and js-to-wasm wrappers appear in the profiles as expected. It thus serves as a regression test for the status quo. R=bmeurer@chromium.org Bug: chromium:1054386 Change-Id: I5d4d8e6a252c6eb266b910621fca43a6ff0837bd Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2066970 Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Commit-Queue: Clemens Backes <clemensb@chromium.org> Cr-Commit-Position: refs/heads/master@{#66401}
93 lines
3.3 KiB
JavaScript
93 lines
3.3 KiB
JavaScript
// Copyright 2019 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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let {session, contextGroup, Protocol} = InspectorTest.start(
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'Test that console profiles contain wasm function names.');
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utils.load('test/mjsunit/wasm/wasm-module-builder.js');
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// Add fibonacci function, calling back and forth between JS and Wasm to also
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// check for the occurrence of the wrappers.
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var builder = new WasmModuleBuilder();
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const imp_index = builder.addImport('q', 'f', kSig_i_i);
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builder.addFunction('fib', kSig_i_i)
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.addBody([
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kExprLocalGet, 0,
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kExprLocalGet, 0,
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kExprI32Const, 2,
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kExprI32LeS, // i < 2 ?
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kExprBrIf, 0, // --> return i
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kExprI32Const, 1, kExprI32Sub, // i - 1
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kExprCallFunction, imp_index, // imp(i - 1)
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kExprLocalGet, 0, kExprI32Const, 2, kExprI32Sub, // i - 2
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kExprCallFunction, imp_index, // imp(i - 2)
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kExprI32Add
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])
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.exportFunc();
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let module_bytes = builder.toArray();
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function compile(bytes) {
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let buffer = new ArrayBuffer(bytes.length);
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let view = new Uint8Array(buffer);
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for (var i = 0; i < bytes.length; i++) {
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view[i] = bytes[i] | 0;
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}
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let module = new WebAssembly.Module(buffer);
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let fib = undefined;
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function imp(i) { return fib(i); }
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let instance = new WebAssembly.Instance(module, {q: {f: imp}});
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fib = instance.exports.fib;
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return instance;
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}
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function checkError(message) {
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if (!message.error) return;
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InspectorTest.log('Error: ');
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InspectorTest.logMessage(message);
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InspectorTest.completeTest();
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}
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(async function test() {
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Protocol.Profiler.enable();
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checkError(await Protocol.Profiler.start());
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let found_good_profile = false;
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let finished_profiles = 0;
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Protocol.Profiler.onConsoleProfileFinished(e => {
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++finished_profiles;
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let function_names =
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e.params.profile.nodes.map(n => n.callFrame.functionName);
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// InspectorTest.log(function_names.join(', '));
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// Check for at least one full cycle of
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// fib -> wasm-to-js -> imp -> js-to-wasm -> fib.
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const expected = ['fib', 'wasm-to-js:i:i', 'imp', 'js-to-wasm:i:i', 'fib'];
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for (let i = 0; i <= function_names.length - expected.length; ++i) {
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if (expected.every((val, idx) => val == function_names[i + idx])) {
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found_good_profile = true;
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}
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}
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});
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InspectorTest.log('Compiling wasm.');
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checkError(await Protocol.Runtime.evaluate({
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expression: 'const instance = (' + compile + ')(' +
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JSON.stringify(module_bytes) + ');'
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}));
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InspectorTest.log(
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'Running fib with increasing input until it shows up in the profile.');
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for (let i = 1; !found_good_profile; ++i) {
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checkError(await Protocol.Runtime.evaluate(
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{expression: 'console.profile(\'profile\');'}));
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checkError(await Protocol.Runtime.evaluate(
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{expression: 'instance.exports.fib(' + i + ');'}));
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checkError(await Protocol.Runtime.evaluate(
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{expression: 'console.profileEnd(\'profile\');'}));
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if (finished_profiles != i) {
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InspectorTest.log(
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'Missing consoleProfileFinished message (expected ' + i + ', got ' +
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finished_profiles + ')');
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}
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}
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InspectorTest.log('Found expected functions in profile.');
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InspectorTest.completeTest();
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})().catch(e => InspectorTest.log('caught: ' + e));
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