LCOV - code coverage report
Current view: top level - dom/file - StreamBlobImpl.cpp (source / functions) Hit Total Coverage
Test: output.info Lines: 0 57 0.0 %
Date: 2017-07-14 16:53:18 Functions: 0 14 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim: set ts=8 sts=2 et sw=2 tw=80: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #include "StreamBlobImpl.h"
       8             : #include "nsStringStream.h"
       9             : 
      10             : namespace mozilla {
      11             : namespace dom {
      12             : 
      13           0 : NS_IMPL_ISUPPORTS_INHERITED(StreamBlobImpl, BlobImpl, nsIMemoryReporter)
      14             : 
      15             : /* static */ already_AddRefed<StreamBlobImpl>
      16           0 : StreamBlobImpl::Create(nsIInputStream* aInputStream,
      17             :                        const nsAString& aContentType,
      18             :                        uint64_t aLength)
      19             : {
      20             :   RefPtr<StreamBlobImpl> blobImplStream =
      21           0 :     new StreamBlobImpl(aInputStream, aContentType, aLength);
      22           0 :   blobImplStream->MaybeRegisterMemoryReporter();
      23           0 :   return blobImplStream.forget();
      24             : }
      25             : 
      26             : /* static */ already_AddRefed<StreamBlobImpl>
      27           0 : StreamBlobImpl::Create(nsIInputStream* aInputStream,
      28             :                        const nsAString& aName,
      29             :                        const nsAString& aContentType,
      30             :                        int64_t aLastModifiedDate,
      31             :                        uint64_t aLength)
      32             : {
      33             :   RefPtr<StreamBlobImpl> blobImplStream =
      34             :     new StreamBlobImpl(aInputStream, aName, aContentType, aLastModifiedDate,
      35           0 :                        aLength);
      36           0 :   blobImplStream->MaybeRegisterMemoryReporter();
      37           0 :   return blobImplStream.forget();
      38             : }
      39             : 
      40           0 : StreamBlobImpl::StreamBlobImpl(nsIInputStream* aInputStream,
      41             :                                const nsAString& aContentType,
      42           0 :                                uint64_t aLength)
      43             :   : BaseBlobImpl(aContentType, aLength)
      44             :   , mInputStream(aInputStream)
      45             :   , mIsDirectory(false)
      46           0 :   , mFileId(-1)
      47             : {
      48           0 :   mImmutable = true;
      49           0 : }
      50             : 
      51           0 : StreamBlobImpl::StreamBlobImpl(StreamBlobImpl* aOther,
      52             :                                const nsAString& aContentType,
      53           0 :                                uint64_t aStart, uint64_t aLength)
      54           0 :   : BaseBlobImpl(aContentType, aOther->mStart + aStart, aLength)
      55           0 :   , mInputStream(new SlicedInputStream(aOther->mInputStream, aStart, aLength))
      56             :   , mIsDirectory(false)
      57           0 :   , mFileId(-1)
      58             : {
      59           0 :   mImmutable = true;
      60           0 : }
      61             : 
      62           0 : StreamBlobImpl::StreamBlobImpl(nsIInputStream* aInputStream,
      63             :                                const nsAString& aName,
      64             :                                const nsAString& aContentType,
      65             :                                int64_t aLastModifiedDate,
      66           0 :                                uint64_t aLength)
      67             :   : BaseBlobImpl(aName, aContentType, aLength, aLastModifiedDate)
      68             :   , mInputStream(aInputStream)
      69             :   , mIsDirectory(false)
      70           0 :   , mFileId(-1)
      71             : {
      72           0 :   mImmutable = true;
      73           0 : }
      74             : 
      75           0 : StreamBlobImpl::~StreamBlobImpl()
      76             : {
      77           0 :   UnregisterWeakMemoryReporter(this);
      78           0 : }
      79             : 
      80             : void
      81           0 : StreamBlobImpl::GetInternalStream(nsIInputStream** aStream, ErrorResult& aRv)
      82             : {
      83           0 :   nsCOMPtr<nsIInputStream> clonedStream;
      84           0 :   nsCOMPtr<nsIInputStream> replacementStream;
      85             : 
      86           0 :   aRv = NS_CloneInputStream(mInputStream, getter_AddRefs(clonedStream),
      87           0 :                             getter_AddRefs(replacementStream));
      88           0 :   if (NS_WARN_IF(aRv.Failed())) {
      89           0 :     return;
      90             :   }
      91             : 
      92           0 :   if (replacementStream) {
      93           0 :     mInputStream = replacementStream.forget();
      94             :   }
      95             : 
      96           0 :   clonedStream.forget(aStream);
      97             : }
      98             : 
      99             : already_AddRefed<BlobImpl>
     100           0 : StreamBlobImpl::CreateSlice(uint64_t aStart, uint64_t aLength,
     101             :                             const nsAString& aContentType, ErrorResult& aRv)
     102             : {
     103           0 :   if (!aLength) {
     104           0 :     RefPtr<BlobImpl> impl = new EmptyBlobImpl(aContentType);
     105           0 :     return impl.forget();
     106             :   }
     107             : 
     108             :   RefPtr<BlobImpl> impl =
     109           0 :     new StreamBlobImpl(this, aContentType, aStart, aLength);
     110           0 :   return impl.forget();
     111             : }
     112             : 
     113             : void
     114           0 : StreamBlobImpl::MaybeRegisterMemoryReporter()
     115             : {
     116             :   // We report only stringInputStream.
     117             :   nsCOMPtr<nsIStringInputStream> stringInputStream =
     118           0 :     do_QueryInterface(mInputStream);
     119           0 :   if (!stringInputStream) {
     120           0 :     return;
     121             :   }
     122             : 
     123           0 :   RegisterWeakMemoryReporter(this);
     124             : }
     125             : 
     126             : NS_IMETHODIMP
     127           0 : StreamBlobImpl::CollectReports(nsIHandleReportCallback* aHandleReport,
     128             :                                nsISupports* aData, bool aAnonymize)
     129             : {
     130             :   nsCOMPtr<nsIStringInputStream> stringInputStream =
     131           0 :     do_QueryInterface(mInputStream);
     132           0 :   if (!stringInputStream) {
     133           0 :     return NS_OK;
     134             :   }
     135             : 
     136           0 :   MOZ_COLLECT_REPORT(
     137             :     "explicit/dom/memory-file-data/stream", KIND_HEAP, UNITS_BYTES,
     138             :     stringInputStream->SizeOfIncludingThis(MallocSizeOf),
     139           0 :     "Memory used to back a File/Blob based on an input stream.");
     140             : 
     141           0 :   return NS_OK;
     142             : }
     143             : 
     144             : } // namespace dom
     145             : } // namespace mozilla

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