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[DOM] Clear sinks and block further use after storage observer shutdown.

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This commit is contained in:
Moonchild 2022-02-09 18:23:27 +00:00 • committed by roytam1
commit bc2aa1f05c
2 changed files with 10 additions and 2 deletions
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6
dom/storage/DOMStorageIPC.cpp
View file

@ -213,8 +213,10 @@ DOMStorageDBChild::RecvObserve(const nsCString& aTopic,
const nsString& aOriginAttributesPattern,
const nsCString& aOriginScope)
{
DOMStorageObserver::Self()->Notify(
aTopic.get(), aOriginAttributesPattern, aOriginScope);
DOMStorageObserver* observer = DOMStorageObserver::Self();
if (observer) {
observer->Notify(aTopic.get(), aOriginAttributesPattern, aOriginScope);
}
return true;
}

6
dom/storage/DOMStorageObserver.cpp
View file

@ -90,6 +90,8 @@ DOMStorageObserver::Shutdown()
if (!sSelf) {
return NS_ERROR_NOT_INITIALIZED;
}
sSelf->mSinks.Clear();
NS_RELEASE(sSelf);
return NS_OK;
@ -123,6 +125,10 @@ DOMStorageObserver::Observe(nsISupports* aSubject,
const char* aTopic,
const char16_t* aData)
{
if (NS_WARN_IF(!sSelf)) { // Shutdown took place, so bail.
return NS_OK;
}
nsresult rv;
// Start the thread that opens the database.