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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /dom/events/test/test_event_handler_cc.html
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+<!DOCTYPE HTML>
+<html>
+<head>
+ <meta charset="utf-8">
+ <title>Test for cycle collection of event handlers</title>
+ <script src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
+ <script>
+ SimpleTest.waitForExplicitFinish();
+
+ function listener() {}
+
+ function make_weak_ref(obj) {
+ let m = new WeakMap;
+ m.set(obj, {});
+ return m;
+ }
+
+ function weak_ref_dead(r) {
+ return !SpecialPowers.nondeterministicGetWeakMapKeys(r).length;
+ }
+
+ function setupTarget1() {
+ let ifr = document.getElementById("target1");
+ let doc = ifr.contentDocument;
+ let b = doc.createElement("button");
+ doc.body.appendChild(b);
+ b.onclick = listener;
+ ifr.remove();
+ return make_weak_ref(b);
+ }
+
+ function setupTarget2() {
+ let ifr = document.getElementById("target2");
+ let doc = ifr.contentDocument;
+ let b = doc.createElement("button");
+ doc.body.appendChild(b);
+ let setFunc = new ifr.contentWindow.Function(`
+ var b = document.querySelector("button");
+ var proto = parent.HTMLElement.prototype;
+ var setter = Object.getOwnPropertyDescriptor(proto, "onclick").set;
+ // Here the current global (and hence CallbackObject global) will be
+ // the parent, the callback will be a known-live thing from the
+ // parent, but the incumbent global will be the child.
+ setter.call(b, parent.listener);
+ `);
+ setFunc();
+ ifr.remove();
+ return make_weak_ref(b);
+ }
+
+ var ref1;
+ var ref2;
+ var maxCounter = 20;
+
+ function GCCCUntilCollected() {
+ SpecialPowers.exactGC(function () {
+ SpecialPowers.forceCC();
+ SpecialPowers.forceGC();
+ SpecialPowers.forceGC();
+
+ if ((!weak_ref_dead(ref1) || !weak_ref_dead(ref2)) && --maxCounter > 0) {
+ requestIdleCallback(GCCCUntilCollected, {timeout: 250});
+ return;
+ }
+
+ ok(weak_ref_dead(ref1),
+ "Should collect cycle through callback global");
+ ok(weak_ref_dead(ref2),
+ "Should collect cycle through incumbent global");
+
+ SimpleTest.finish();
+ });
+ }
+
+ addLoadEvent(function() {
+ ref1 = setupTarget1();
+ ref2 = setupTarget2();
+ GCCCUntilCollected();
+ });
+ </script>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none"></div>
+<iframe id="target1"></iframe>
+<iframe id="target2"></iframe>
+<pre id="test"></pre>
+</body>
+</html>