Makes sure that the OfflineAudioContext objects are not leaking when suspended.

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".

PASS internals.numberOfBaseAudioContexts() >= instancesToCreate is true

PASS internals.numberOfBaseAudioContexts() < instancesToCreate is true

PASS successfullyParsed is true

TEST COMPLETE

<script src="../../resources/js-test.js"></script>

jsTestIsAsync = true;

const instancesToCreate = 100;

function test() {

let promises = [];

for (let i = 0; i < instancesToCreate; i++) {

let context = new OfflineAudioContext(2, 44100, 44100);

promises.push(context.suspend(0.5));

context.startRendering();

}

shouldBeTrue("internals.numberOfBaseAudioContexts() >= instancesToCreate");

Promise.all(promises).then((values) => {

gc();

setTimeout(() => {

gc();

shouldBeTrue("internals.numberOfBaseAudioContexts() < instancesToCreate");

finishJSTest();

}, 0);

});

2021-04-08 Chris Dumez <cdumez@apple.com>

Suspended OfflineAudioContext objects are leaking

https://bugs.webkit.org/show_bug.cgi?id=224333

Reviewed by Darin Adler.

When offline rendering is suspended, we now release the ActiveDOMObject::PendingActivity we hold

to keep the OfflineAudioContext and its wrapper alive during rendering. The JS has to keep a

reference to the context's wrapper anyway if they ever want to resume rendering.

Test: webaudio/OfflineAudioContext/offlineaudiocontext-leak-while-suspended.html

* Modules/webaudio/OfflineAudioContext.cpp:

(WebCore::OfflineAudioContext::didSuspendRendering):

clearPendingActivity();