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7d3887bb0b
D95456 didn't properly include headers (`--header-filter=dom`). Differential Revision: https://phabricator.services.mozilla.com/D145665
81 lines
2.7 KiB
C++
81 lines
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* 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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#ifndef mozilla_dom_BlobURLInputStream_h
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#define mozilla_dom_BlobURLInputStream_h
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#include "mozilla/dom/BlobImpl.h"
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#include "mozilla/Mutex.h"
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#include "nsCOMPtr.h"
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#include "nsIAsyncInputStream.h"
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#include "nsIInputStreamLength.h"
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namespace mozilla::dom {
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class BlobURL;
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class BlobURLChannel;
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class BlobURLInputStream final : public nsIAsyncInputStream,
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public nsIInputStreamLength,
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public nsIAsyncInputStreamLength,
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public nsIInputStreamCallback,
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public nsIInputStreamLengthCallback {
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public:
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSIINPUTSTREAM
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NS_DECL_NSIASYNCINPUTSTREAM
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NS_DECL_NSIINPUTSTREAMLENGTH
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NS_DECL_NSIASYNCINPUTSTREAMLENGTH
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NS_DECL_NSIINPUTSTREAMCALLBACK
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NS_DECL_NSIINPUTSTREAMLENGTHCALLBACK
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static already_AddRefed<nsIInputStream> Create(BlobURLChannel* const aChannel,
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BlobURL* const aBlobURL);
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BlobURLInputStream(BlobURLChannel* const aChannel, nsACString& aBlobURLSpec);
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private:
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enum class State { INITIAL, READY, WAITING, CLOSED, ERROR };
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~BlobURLInputStream();
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void WaitOnUnderlyingStream(const MutexAutoLock& aProofOfLock);
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// This method should only be used to call RetrieveBlobData in a different
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// thread
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void CallRetrieveBlobData();
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void RetrieveBlobData(const MutexAutoLock& aProofOfLock);
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nsresult StoreBlobImplStream(already_AddRefed<BlobImpl> aBlobImpl,
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const MutexAutoLock& aProofOfLock);
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void NotifyWaitTargets(const MutexAutoLock& aProofOfLock);
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void ReleaseUnderlyingStream(const MutexAutoLock& aProofOfLock);
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RefPtr<BlobURLChannel> mChannel;
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const nsCString mBlobURLSpec;
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// Non-recursive mutex introduced in order to guard access to mState, mError
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// and mAsyncInputStream
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Mutex mStateMachineMutex MOZ_UNANNOTATED;
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State mState;
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// Stores the error code if stream is in error state
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nsresult mError;
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int64_t mBlobSize;
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nsCOMPtr<nsIAsyncInputStream> mAsyncInputStream;
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nsCOMPtr<nsIInputStreamCallback> mAsyncWaitCallback;
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nsCOMPtr<nsIEventTarget> mAsyncWaitTarget;
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uint32_t mAsyncWaitFlags;
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uint32_t mAsyncWaitRequestedCount;
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nsCOMPtr<nsIInputStreamLengthCallback> mAsyncLengthWaitCallback;
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nsCOMPtr<nsIEventTarget> mAsyncLengthWaitTarget;
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};
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} // namespace mozilla::dom
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#endif /* mozilla_dom_BlobURLInputStream_h */
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