mirror of
https://github.com/mozilla/gecko-dev.git
synced 2025-11-11 13:48:23 +02:00
82dd133f9e
Automatic update from web-platform-tests [WebLocks]: Modifying weblocks algos to be O(1) The behaviour of the request/release operations of web locks are modified to be O(1) instead of their currently O(n) worst case runtime. Additionally the query-order wpt is modified to reflect the new spec requirement that the state returned by navigator.locks.query need only respect ordering for requested locks per resource. Bug: 913014 Change-Id: I819f8c27c995cb698a7c8b2c75ee80d32c744f07 Spec: https://wicg.github.io/web-locks/#algorithms Reviewed-on: https://chromium-review.googlesource.com/c/1367910 Commit-Queue: Andreas Butler <andreasbutler@google.com> Reviewed-by: Victor Costan <pwnall@chromium.org> Reviewed-by: Joshua Bell <jsbell@chromium.org> Reviewed-by: Daniel Murphy <dmurph@chromium.org> Cr-Commit-Position: refs/heads/master@{#621833} -- wpt-commits: 27085bc4fef9a55a5f5dd530c6e8ff798ff8c6c4 wpt-pr: 14420
52 lines
1.4 KiB
HTML
52 lines
1.4 KiB
HTML
<!DOCTYPE html>
|
|
<title>Helper IFrame</title>
|
|
<script>
|
|
'use strict';
|
|
|
|
// Map of lock_id => function that releases a lock.
|
|
|
|
const held = new Map();
|
|
let next_lock_id = 1;
|
|
|
|
self.addEventListener('message', e => {
|
|
function respond(data) {
|
|
parent.postMessage(Object.assign(data, {rqid: e.data.rqid}), '*');
|
|
}
|
|
|
|
switch (e.data.op) {
|
|
case 'request':
|
|
navigator.locks.request(
|
|
e.data.name, {
|
|
mode: e.data.mode || 'exclusive',
|
|
ifAvailable: e.data.ifAvailable || false
|
|
}, lock => {
|
|
if (lock === null) {
|
|
respond({ack: 'request', failed: true});
|
|
return;
|
|
}
|
|
let lock_id = next_lock_id++;
|
|
let release;
|
|
const promise = new Promise(r => { release = r; });
|
|
held.set(lock_id, release);
|
|
respond({ack: 'request', lock_id: lock_id});
|
|
return promise
|
|
});
|
|
break;
|
|
|
|
case 'release':
|
|
held.get(e.data.lock_id)();
|
|
held.delete(e.data.lock_id);
|
|
respond({ack: 'release', lock_id: e.data.lock_id});
|
|
break;
|
|
|
|
case 'client_id':
|
|
navigator.locks.request(e.data.name, async lock => {
|
|
const lock_state = await navigator.locks.query();
|
|
const held_lock =
|
|
lock_state.held.filter(l => l.name === lock.name)[0];
|
|
respond({ack: 'client_id', client_id: held_lock.clientId});
|
|
});
|
|
break;
|
|
}
|
|
});
|
|
</script>
|