v8/test/inspector/heap-profiler/collect-garbage.js
Ulan Degenbaev d1070e417f [inspector] Make collectGarbage of HeapProfiler precise
Instead of forcing GC right away, the function now post a task and
performance GC from the task with an empty stack to avoid false positive
pointers in conservative stack scanning.

Bug: chromium:1098187
Change-Id: I88864845a1e395056c5d5f6e867ad774b87dbb6a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2307217
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69444}
2020-08-18 07:24:14 +00:00

31 lines
1022 B
JavaScript

// Copyright 2020 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: --no-stress-incremental-marking
let {session, contextGroup, Protocol} = InspectorTest.start(
'Tests collectGarbage.');
contextGroup.addScript(`
function createWeakRef() {
globalThis.weak_ref = new WeakRef(new Array(1000).fill(0));
}
function getWeakRef() {
if (!globalThis.weak_ref.deref()) return 'WeakRef is cleared after GC.';
return 'WeakRef is not cleared. GC did not happen?'
}
//# sourceURL=test.js`);
Protocol.Debugger.enable();
Protocol.HeapProfiler.enable();
InspectorTest.runAsyncTestSuite([
async function testCollectGarbage() {
await Protocol.Runtime.evaluate({ expression: 'createWeakRef()' });
await Protocol.HeapProfiler.collectGarbage();
let weak_ref = await Protocol.Runtime.evaluate({ expression: 'getWeakRef()' });
InspectorTest.log(`WeakRef state: ${weak_ref.result.result.value}`);
}
]);