c4e6ff13ff
This implementation of nsIChannel wraps an inner nsIChannel, and allows suspend() to be called immediately without waiting for asyncOpen to have been called. Differential Revision: https://phabricator.services.mozilla.com/D237639
83 lines
2.0 KiB
C++
83 lines
2.0 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "SuspendableChannelWrapper.h"
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#include "nsIStreamListener.h"
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namespace mozilla {
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namespace net {
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NS_IMPL_ISUPPORTS(BaseSuspendableChannelWrapper, nsISuspendableChannelWrapper)
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NS_IMPL_ADDREF_INHERITED(SuspendableChannelWrapper,
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BaseSuspendableChannelWrapper)
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NS_IMPL_RELEASE_INHERITED(SuspendableChannelWrapper,
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BaseSuspendableChannelWrapper)
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NS_INTERFACE_MAP_BEGIN(SuspendableChannelWrapper)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIChannel)
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NS_INTERFACE_MAP_ENTRY(nsIRequest)
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NS_INTERFACE_MAP_ENTRY(nsIChannel)
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NS_INTERFACE_MAP_ENTRY(nsISuspendableChannelWrapper)
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NS_INTERFACE_MAP_END_AGGREGATED(mInnerChannel)
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NS_IMETHODIMP
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SuspendableChannelWrapper::Suspend() {
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if (mInnerOpened) {
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mInnerChannel->Suspend();
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} else {
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mSuspendCount++;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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SuspendableChannelWrapper::Resume() {
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if (mInnerOpened) {
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mInnerChannel->Resume();
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} else if (mSuspendCount > 0) {
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mSuspendCount--;
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}
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if (!mSuspendCount && mOuterOpened && !mInnerOpened) {
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mInnerOpened = true;
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MOZ_ASSERT(mListener);
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return mInnerChannel->AsyncOpen(mListener);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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SuspendableChannelWrapper::IsPending(bool* _retval) {
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NS_ENSURE_ARG_POINTER(_retval);
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if (mInnerOpened) {
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return mInnerChannel->IsPending(_retval);
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}
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*_retval = mSuspendCount > 0;
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return NS_OK;
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}
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NS_IMETHODIMP
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SuspendableChannelWrapper::AsyncOpen(nsIStreamListener* aListener) {
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if (mOuterOpened) {
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return NS_ERROR_ALREADY_OPENED;
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}
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mListener = aListener;
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mOuterOpened = true;
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if (mInnerOpened || !mSuspendCount) {
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return mInnerChannel->AsyncOpen(mListener);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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SuspendableChannelWrapper::Open(nsIInputStream** _retval) {
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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} // namespace net
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} // namespace mozilla
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