blob: da902ac4f176938b229efa56f1343c3f62bb309b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
// META: script=/common/gc.js
// META: script=resources/maybe-garbage-collect.js
// ├──> maybeGarbageCollectAndCleanupAsync
// └──> resolveGarbageCollection
/*---
esid: sec-finalization-registry.prototype.cleanupSome
info: |
FinalizationRegistry.prototype.cleanupSome ( [ callback ] )
1. Let finalizationRegistry be the this value.
2. If Type(finalizationRegistry) is not Object, throw a TypeError exception.
3. If finalizationRegistry does not have a [[Cells]] internal slot, throw a TypeError exception.
4. If callback is not undefined and IsCallable(callback) is false, throw a TypeError exception.
5. Perform ? CleanupFinalizationRegistry(finalizationRegistry, callback).
6. Return undefined.
---*/
let holdingsList = [];
function cb(holding) {
holdingsList.push(holding);
};
let finalizationRegistry = new FinalizationRegistry(function() {});
let referenced = {};
function emptyCells() {
let target = {};
finalizationRegistry.register(target, 'target!');
finalizationRegistry.register(referenced, 'referenced');
let prom = maybeGarbageCollectAndCleanupAsync(target);
target = null;
return prom;
}
promise_test(() => {
return (async () => {
assert_implements(
typeof FinalizationRegistry.prototype.cleanupSome === 'function',
'FinalizationRegistry.prototype.cleanupSome is not implemented.'
);
await emptyCells();
finalizationRegistry.cleanupSome(cb);
assert_equals(holdingsList.length, 1);
assert_equals(holdingsList[0], 'target!');
assert_equals(typeof referenced, 'object', 'referenced preserved');
})().catch(resolveGarbageCollection);
}, 'cleanupCallback has only one optional chance to be called for a GC that cleans up a registered target.');
|
