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This commit exposes the Permissions API to DOM Workers. It achieves this goal by introducing a thread-safe bridge between `PermissionStatus` and the `PermissionObserver`: the `PermissionStatusSink` object. Actors: - The `PermissionObserver` is a main-thread-only singleton that monitors permission change events and propagates the notification to the right sink objects. - The `PermissionStatus` is the DOM object exposed to the global. It's not thread-safe. - The `PermissionStatusSink` is the new bridge introduced by this commit. The `PermissionStatusSink` lifetime: - This object is kept alive on the current thread by the `PermissionStatus` and on the main thread by the `PermissionObserver`. - The `PermissionStatus` creates the object on its creation thread. When `PermissionStatus` object is released (or disconnected from the owner, it disentangles itself from the `PermissionStatusSink`. The disentangle operation triggers the un-registration procedure from the `PermissionObserver` on the main thread. - A weak `WorkerRef` is used to monitor the worker's lifetime. Permission change notification: - When the `PermissionObserver` is notified for a permission-change event, it notifies all the `PermissionStatusSink`. This happens on the main thread (see `MaybeUpdatedByOnMainThread` and `MaybeUpdatedByNotifyOnlyOnMainThread`). - Using `MozPromise`, the `PermissionStatusSink` computes the permission action (`PermissionChangedOnMainThread`) on the main thread, then informs the parent `PermissionStatus` object on its creation thread. - The `PermissionStatus` object converts the action to the DOM `PermissionState` and dispatches an event. Differential Revision: https://phabricator.services.mozilla.com/D224594 |
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| .. | ||
| loader | ||
| remoteworkers | ||
| sharedworkers | ||
| test | ||
| ChromeWorker.cpp | ||
| ChromeWorker.h | ||
| ChromeWorkerScope.cpp | ||
| ChromeWorkerScope.h | ||
| EventWithOptionsRunnable.cpp | ||
| EventWithOptionsRunnable.h | ||
| JSExecutionManager.cpp | ||
| JSExecutionManager.h | ||
| JSSettings.h | ||
| MessageEventRunnable.cpp | ||
| MessageEventRunnable.h | ||
| moz.build | ||
| nsIWorkerChannelInfo.idl | ||
| nsIWorkerDebugger.idl | ||
| nsIWorkerDebuggerManager.idl | ||
| Queue.h | ||
| RegisterBindings.cpp | ||
| RuntimeService.cpp | ||
| RuntimeService.h | ||
| ScriptLoader.cpp | ||
| ScriptLoader.h | ||
| Worker.cpp | ||
| Worker.h | ||
| WorkerChannelInfo.cpp | ||
| WorkerChannelInfo.h | ||
| WorkerCommon.h | ||
| WorkerCSPEventListener.cpp | ||
| WorkerCSPEventListener.h | ||
| WorkerDebugger.cpp | ||
| WorkerDebugger.h | ||
| WorkerDebuggerManager.cpp | ||
| WorkerDebuggerManager.h | ||
| WorkerDocumentListener.cpp | ||
| WorkerDocumentListener.h | ||
| WorkerError.cpp | ||
| WorkerError.h | ||
| WorkerEventTarget.cpp | ||
| WorkerEventTarget.h | ||
| WorkerIPCUtils.h | ||
| WorkerLoadInfo.cpp | ||
| WorkerLoadInfo.h | ||
| WorkerLocation.cpp | ||
| WorkerLocation.h | ||
| WorkerNavigator.cpp | ||
| WorkerNavigator.h | ||
| WorkerPrivate.cpp | ||
| WorkerPrivate.h | ||
| WorkerRef.cpp | ||
| WorkerRef.h | ||
| WorkerRunnable.cpp | ||
| WorkerRunnable.h | ||
| WorkerScope.cpp | ||
| WorkerScope.h | ||
| WorkerStatus.h | ||
| WorkerTestUtils.cpp | ||
| WorkerTestUtils.h | ||
| WorkerThread.cpp | ||
| WorkerThread.h | ||