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Issue #1587 - Part 5: Hook FetchObserver up to the Fetch API

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This commit is contained in:
Moonchild 2020-06-11 08:51:07 +00:00 • committed by Roy Tam
commit 3d2ca85edd
11 changed files with 399 additions and 75 deletions
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37
dom/fetch/FetchDriver.cpp
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@ -667,6 +667,31 @@ FetchDriver::OnStartRequest(nsIRequest* aRequest,
return NS_OK;
}
namespace {
// Runnable to call the observer OnDataAvailable on the main-thread.
class DataAvailableRunnable final : public Runnable
{
RefPtr<FetchDriverObserver> mObserver;
public:
explicit DataAvailableRunnable(FetchDriverObserver* aObserver)
: mObserver(aObserver)
{
MOZ_ASSERT(aObserver);
}
NS_IMETHOD
Run() override
{
mObserver->OnDataAvailable();
mObserver = nullptr;
return NS_OK;
}
};
} // anonymous namespace
NS_IMETHODIMP
FetchDriver::OnDataAvailable(nsIRequest* aRequest,
nsISupports* aContext,
@ -678,6 +703,18 @@ FetchDriver::OnDataAvailable(nsIRequest* aRequest,
// called between OnStartRequest and OnStopRequest, so we don't need to worry
// about races.
if (mObserver) {
if (NS_IsMainThread()) {
mObserver->OnDataAvailable();
} else {
RefPtr<Runnable> runnable = new DataAvailableRunnable(mObserver);
nsresult rv = NS_DispatchToMainThread(runnable);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
}
}
uint32_t aRead;
MOZ_ASSERT(mResponse);
MOZ_ASSERT(mPipeOutputStream);