Name Description Size
ChromeWorker.cpp static 3120
ChromeWorker.h unused 1077
ChromeWorkerScope.cpp 1887
ChromeWorkerScope.h 646
EventWithOptionsRunnable.cpp 5826
EventWithOptionsRunnable.h 2110
JSExecutionManager.cpp 7200
JSExecutionManager.h 6963
JSSettings.h 1819
loader
MessageEventRunnable.cpp 4752
MessageEventRunnable.h 1217
moz.build 2550
nsIWorkerChannelInfo.idl 847
nsIWorkerDebugger.idl 2349
nsIWorkerDebuggerManager.idl 834
Queue.h mozilla_dom_workerinternals_Queue_h 3754
RegisterBindings.cpp 1460
remoteworkers
RuntimeService.cpp 74887
RuntimeService.h 5316
ScriptLoader.cpp 68868
ScriptLoader.h 13820
sharedworkers
test
Worker.cpp static 7531
Worker.h mozilla_dom_Worker_h 2538
WorkerChannelInfo.cpp 1889
WorkerChannelInfo.h 1363
WorkerCommon.h 1589
WorkerCSPEventListener.cpp static 3070
WorkerCSPEventListener.h 1100
WorkerDebugger.cpp 13488
WorkerDebugger.h 1689
WorkerDebuggerManager.cpp anonymous namespace 9492
WorkerDebuggerManager.h 3251
WorkerDocumentListener.cpp 3493
WorkerDocumentListener.h mozilla_dom_WorkerDocumentListener_h__ 1153
WorkerError.cpp isErrorEvent 16803
WorkerError.h 2509
WorkerEventTarget.cpp 5778
WorkerEventTarget.h 1619
WorkerIPCUtils.h 879
WorkerLoadInfo.cpp 17542
WorkerLoadInfo.h 6344
WorkerLocation.cpp static 1419
WorkerLocation.h 2491
WorkerNavigator.cpp static 8606
WorkerNavigator.h unused 3505
WorkerPrivate.cpp 197806
WorkerPrivate.h 55954
WorkerRef.cpp static 7318
WorkerRef.h If you want to play with a DOM Worker, you must know that it can go away at any time if nothing prevents its shutting down. This documentation helps to understand how to play with DOM Workers correctly. There are several reasons why a DOM Worker could go away. Here is the complete list: a. GC/CC - If the DOM Worker thread is idle and the Worker object is garbage collected, it goes away. b. The worker script can call self.close() c. The Worker object calls worker.terminate() d. Firefox is shutting down. When a DOM Worker goes away, it does several steps. See more in WorkerStatus.h. The DOM Worker thread will basically stop scheduling WorkerRunnables, and eventually WorkerControlRunnables. But if there is something preventing the shutting down, it will always possible to dispatch WorkerControlRunnables. Of course, at some point, the worker _must_ be released, otherwise firefox will leak it and the browser shutdown will hang. WeakWorkerRef is a refcounted, NON thread-safe object. From this object, you can obtain a WorkerPrivate, calling WeakWorkerRef::GetPrivate(). It returns nullptr if the worker is shutting down or if it is already gone away. If you want to know when a DOM Worker starts the shutting down procedure, pass a callback to the mozilla::dom::WeakWorkerRef::Create() method. Your function will be called. Note that _after_ the callback, WeakWorkerRef::GetPrivate() will return nullptr. How to keep a DOM Worker alive? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ If you need to keep the worker alive, you must use StrongWorkerRef. You can have this refcounted, NON thread-safe object, calling mozilla::dom::StrongWorkerRef::Create(WorkerPrivate* aWorkerPrivate); If you have a StrongWorkerRef: a. the DOM Worker is kept alive. b. you can have access to the WorkerPrivate, calling: Private(). c. WorkerControlRunnable can be dispatched. Note that the DOM Worker shutdown can start at any time, but having a StrongWorkerRef prevents the full shutdown. Also with StrongWorkerRef, you can pass a callback when calling mozilla::dom::StrongWorkerRef::Create(). When the DOM Worker shutdown starts, WorkerRunnable cannot be dispatched anymore. At this point, you should dispatch WorkerControlRunnable just to release resources. How to have a thread-safe DOM Worker reference? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Sometimes you need to play with threads and you need a thread-safe worker reference. ThreadSafeWorkerRef is what you want. Just because this object can be sent to different threads, we don't allow the setting of a callback. It would be confusing. ThreadSafeWorkerRef can be destroyed in any thread. Internally it keeps a reference to its StrongWorkerRef creator and this ref will be dropped on the correct thread when the ThreadSafeWorkerRef is deleted. IPC WorkerRef ~~~~~~~~~~~~~ IPDL protocols require a correct shutdown sequence. Because of this, they need a special configuration: 1. they need to be informed when the Worker starts the shutting down 2. they don't want to prevent the shutdown 3. but at the same time, they need to block the shutdown until the WorkerRef is not longer alive. Point 1 is a standard feature of WorkerRef; point 2 is similar to WeakWorkerRef; point 3 is similar to StrongWorkerRef. You can create a special IPC WorkerRef using this static method: mozilla::dom::IPCWorkerRef::Create(WorkerPrivate* aWorkerPrivate, const char* * aName); 8223
WorkerRunnable.cpp 21638
WorkerRunnable.h 17463
WorkerScope.cpp 46586
WorkerScope.h 17291
WorkerStatus.h Use this chart to help figure out behavior during each of the closing statuses. Details below. +========================================================+ | Closing Statuses | +=============+=============+=================+==========+ | status | clear queue | abort execution | notified | +=============+=============+=================+==========+ | Closing | yes | no | no | +-------------+-------------+-----------------+----------+ | Canceling | yes | yes | yes | +-------------+-------------+-----------------+----------+ | Killing | yes | yes | yes | +-------------+-------------+-----------------+----------+ 2185
WorkerTestUtils.cpp 814
WorkerTestUtils.h dom/webidl/WorkerTestUtils.webidl defines APIs to expose worker's internal status for glass-box testing. The APIs are only exposed to Workers with prefs dom.workers.testing.enabled. WorkerTestUtils is the implementation of dom/webidl/WorkerTestUtils.webidl 1333
WorkerThread.cpp aKey 10367
WorkerThread.h 3386