v8/test/mjsunit/wasm/tier-down-to-liftoff.js
Clemens Backes 81b3372efa [wasm] Fix tier-down test for multiple isolates
The test was explicitly tiering up or down a module, without respecting
other isolates. Thus it was failing in multi-isolate mode.
This CL removes two runtime functions which do not make sense in a
multi-isolate setting (and were only used in this one test), and
replaces them with runtime functions that mimic what enabling/disabling
the debugger domain does: As long as there is at least one isolate which
needs modules to be tiered down, we keep them tiered down.

R=thibaudm@chromium.org

Bug: v8:10359, v8:10099
Change-Id: Ia85f4ea29ba6a6bb54aca54a48fadd351121d3eb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2637231
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72164}
2021-01-19 16:11:01 +00:00

68 lines
1.7 KiB
JavaScript

// Copyright 2019 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
load('test/mjsunit/wasm/wasm-module-builder.js');
const num_functions = 200;
function create_builder(delta = 0) {
const builder = new WasmModuleBuilder();
for (let i = 0; i < num_functions; ++i) {
builder.addFunction('f' + i, kSig_i_v)
.addBody(wasmI32Const(i + delta))
.exportFunc();
}
return builder;
}
function checkTieredDown(instance) {
for (let i = 0; i < num_functions; ++i) {
assertTrue(%IsLiftoffFunction(instance.exports['f' + i]));
}
}
function checkTieredUp(instance) {
// Busy waiting until all functions are tiered up.
let num_liftoff_functions;
while (true) {
num_liftoff_functions = 0;
for (let i = 0; i < num_functions; ++i) {
if (%IsLiftoffFunction(instance.exports['f' + i])) {
num_liftoff_functions++;
}
}
if (num_liftoff_functions == 0) return;
}
}
function check(instance) {
%WasmTierDown();
checkTieredDown(instance);
for (let i = 0; i < num_functions; ++i) {
%WasmTierUpFunction(instance, i);
}
checkTieredDown(instance);
%WasmTierUp();
checkTieredUp(instance);
}
(function testTierDownToLiftoff() {
print(arguments.callee.name);
const instance = create_builder().instantiate();
check(instance);
})();
// Use slightly different module for this test to avoid sharing native module.
async function testTierDownToLiftoffAsync() {
print(arguments.callee.name);
const instance = await create_builder(num_functions).asyncInstantiate();
check(instance);
}
assertPromiseResult(testTierDownToLiftoffAsync());