зеркало из https://github.com/mozilla/gecko-dev.git
140 строки
4.1 KiB
C++
140 строки
4.1 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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#include "StreamBlobImpl.h"
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#include "nsStringStream.h"
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namespace mozilla {
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namespace dom {
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NS_IMPL_ISUPPORTS_INHERITED(StreamBlobImpl, BlobImpl, nsIMemoryReporter)
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/* static */ already_AddRefed<StreamBlobImpl>
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StreamBlobImpl::Create(nsIInputStream* aInputStream,
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const nsAString& aContentType,
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uint64_t aLength)
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{
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RefPtr<StreamBlobImpl> blobImplStream =
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new StreamBlobImpl(aInputStream, aContentType, aLength);
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blobImplStream->MaybeRegisterMemoryReporter();
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return blobImplStream.forget();
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}
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/* static */ already_AddRefed<StreamBlobImpl>
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StreamBlobImpl::Create(nsIInputStream* aInputStream,
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const nsAString& aName,
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const nsAString& aContentType,
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int64_t aLastModifiedDate,
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uint64_t aLength)
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{
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RefPtr<StreamBlobImpl> blobImplStream =
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new StreamBlobImpl(aInputStream, aName, aContentType, aLastModifiedDate,
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aLength);
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blobImplStream->MaybeRegisterMemoryReporter();
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return blobImplStream.forget();
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}
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StreamBlobImpl::StreamBlobImpl(nsIInputStream* aInputStream,
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const nsAString& aContentType,
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uint64_t aLength)
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: BaseBlobImpl(aContentType, aLength)
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, mInputStream(aInputStream)
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{
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mImmutable = true;
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}
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StreamBlobImpl::StreamBlobImpl(StreamBlobImpl* aOther,
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const nsAString& aContentType,
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uint64_t aStart, uint64_t aLength)
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: BaseBlobImpl(aContentType, aOther->mStart + aStart, aLength)
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, mInputStream(new SlicedInputStream(aOther->mInputStream, aStart, aLength))
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{
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mImmutable = true;
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}
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StreamBlobImpl::StreamBlobImpl(nsIInputStream* aInputStream,
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const nsAString& aName,
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const nsAString& aContentType,
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int64_t aLastModifiedDate,
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uint64_t aLength)
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: BaseBlobImpl(aName, aContentType, aLength, aLastModifiedDate)
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, mInputStream(aInputStream)
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{
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mImmutable = true;
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}
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StreamBlobImpl::~StreamBlobImpl()
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{
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UnregisterWeakMemoryReporter(this);
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}
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void
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StreamBlobImpl::GetInternalStream(nsIInputStream** aStream, ErrorResult& aRv)
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{
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nsCOMPtr<nsIInputStream> clonedStream;
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nsCOMPtr<nsIInputStream> replacementStream;
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aRv = NS_CloneInputStream(mInputStream, getter_AddRefs(clonedStream),
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getter_AddRefs(replacementStream));
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if (NS_WARN_IF(aRv.Failed())) {
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return;
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}
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if (replacementStream) {
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mInputStream = replacementStream.forget();
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}
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clonedStream.forget(aStream);
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}
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already_AddRefed<BlobImpl>
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StreamBlobImpl::CreateSlice(uint64_t aStart, uint64_t aLength,
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const nsAString& aContentType, ErrorResult& aRv)
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{
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if (!aLength) {
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RefPtr<BlobImpl> impl = new EmptyBlobImpl(aContentType);
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return impl.forget();
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}
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RefPtr<BlobImpl> impl =
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new StreamBlobImpl(this, aContentType, aStart, aLength);
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return impl.forget();
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}
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void
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StreamBlobImpl::MaybeRegisterMemoryReporter()
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{
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// We report only stringInputStream.
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nsCOMPtr<nsIStringInputStream> stringInputStream =
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do_QueryInterface(mInputStream);
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if (!stringInputStream) {
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return;
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}
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RegisterWeakMemoryReporter(this);
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}
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NS_IMETHODIMP
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StreamBlobImpl::CollectReports(nsIHandleReportCallback* aHandleReport,
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nsISupports* aData, bool aAnonymize)
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{
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nsCOMPtr<nsIStringInputStream> stringInputStream =
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do_QueryInterface(mInputStream);
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if (!stringInputStream) {
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return NS_OK;
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}
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MOZ_COLLECT_REPORT(
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"explicit/dom/memory-file-data/stream", KIND_HEAP, UNITS_BYTES,
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stringInputStream->SizeOfIncludingThis(MallocSizeOf),
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"Memory used to back a File/Blob based on an input stream.");
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return NS_OK;
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}
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} // namespace dom
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} // namespace mozilla
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