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We can receive IPC events after a DocAccessibleParent is shut down if the BrowserParent is in the process of being destroyed (probably the tab closed) but there are still events in the IPC queue. Most Recv*Event methods in BrowserParent check mShutdown, but a few don't. For the events that don't, if the event is for a document, we'll successfully fire the platform event, and then successfully get and cache an xpcAccessibleDocument. However, that xpcAccessibleDocument will never be removed from the cache because it's already shut down, so NotifyOfRemoteDocShutdown (which would normally remove it from the XPC cache) won't get called. This results in a leaked object. Thus, it's important that all Recv*Event methods drop the event if mShutdown is true. This patch adds that check to the methods which didn't have it already. Differential Revision: https://phabricator.services.mozilla.com/D79780 |
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| aom | ||
| atk | ||
| base | ||
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| html | ||
| interfaces | ||
| ipc | ||
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| tests | ||
| windows | ||
| xpcom | ||
| xul | ||
| moz.build | ||