Add m-esr52 at 52.6.0

1 files changed, 283 insertions, 0 deletions

diff --git a/dom/indexedDB/IDBMutableFile.cpp b/dom/indexedDB/IDBMutableFile.cpp
new file mode 100644
index 000000000..9e9bfc4ee
--- /dev/null
+++ b/dom/indexedDB/IDBMutableFile.cpp
@@ -0,0 +1,283 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "IDBMutableFile.h"
+
+#include "ActorsChild.h"
+#include "FileInfo.h"
+#include "FileSnapshot.h"
+#include "IDBDatabase.h"
+#include "IDBFactory.h"
+#include "IDBFileHandle.h"
+#include "IDBFileRequest.h"
+#include "IndexedDatabaseManager.h"
+#include "MainThreadUtils.h"
+#include "mozilla/Assertions.h"
+#include "mozilla/ErrorResult.h"
+#include "mozilla/dom/File.h"
+#include "mozilla/dom/IDBMutableFileBinding.h"
+#include "mozilla/dom/filehandle/ActorsChild.h"
+#include "mozilla/dom/indexedDB/PBackgroundIDBSharedTypes.h"
+#include "mozilla/dom/quota/FileStreams.h"
+#include "mozilla/dom/quota/QuotaManager.h"
+#include "mozilla/ipc/BackgroundUtils.h"
+#include "mozilla/ipc/PBackgroundSharedTypes.h"
+#include "nsContentUtils.h"
+#include "nsDebug.h"
+#include "nsError.h"
+#include "nsIInputStream.h"
+#include "nsIPrincipal.h"
+#include "ReportInternalError.h"
+
+namespace mozilla {
+namespace dom {
+
+using namespace mozilla::dom::indexedDB;
+using namespace mozilla::dom::quota;
+
+IDBMutableFile::IDBMutableFile(IDBDatabase* aDatabase,
+                               BackgroundMutableFileChild* aActor,
+                               const nsAString& aName,
+                               const nsAString& aType)
+  : DOMEventTargetHelper(aDatabase)
+  , MutableFileBase(DEBUGONLY(aDatabase->OwningThread(),)
+                    aActor)
+  , mDatabase(aDatabase)
+  , mName(aName)
+  , mType(aType)
+  , mInvalidated(false)
+{
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aDatabase);
+  aDatabase->AssertIsOnOwningThread();
+
+  mDatabase->NoteLiveMutableFile(this);
+}
+
+IDBMutableFile::~IDBMutableFile()
+{
+  AssertIsOnOwningThread();
+
+  mDatabase->NoteFinishedMutableFile(this);
+}
+
+int64_t
+IDBMutableFile::GetFileId() const
+{
+  AssertIsOnOwningThread();
+
+  int64_t fileId;
+  if (!mBackgroundActor ||
+      NS_WARN_IF(!mBackgroundActor->SendGetFileId(&fileId))) {
+    return -1;
+  }
+
+  return fileId;
+}
+
+void
+IDBMutableFile::Invalidate()
+{
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(!mInvalidated);
+
+  mInvalidated = true;
+
+  AbortFileHandles();
+}
+
+void
+IDBMutableFile::RegisterFileHandle(IDBFileHandle* aFileHandle)
+{
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aFileHandle);
+  aFileHandle->AssertIsOnOwningThread();
+  MOZ_ASSERT(!mFileHandles.Contains(aFileHandle));
+
+  mFileHandles.PutEntry(aFileHandle);
+}
+
+void
+IDBMutableFile::UnregisterFileHandle(IDBFileHandle* aFileHandle)
+{
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aFileHandle);
+  aFileHandle->AssertIsOnOwningThread();
+  MOZ_ASSERT(mFileHandles.Contains(aFileHandle));
+
+  mFileHandles.RemoveEntry(aFileHandle);
+}
+
+void
+IDBMutableFile::AbortFileHandles()
+{
+  AssertIsOnOwningThread();
+
+  class MOZ_STACK_CLASS Helper final
+  {
+  public:
+    static void
+    AbortFileHandles(nsTHashtable<nsPtrHashKey<IDBFileHandle>>& aTable)
+    {
+      if (!aTable.Count()) {
+        return;
+      }
+
+      nsTArray<RefPtr<IDBFileHandle>> fileHandlesToAbort;
+      fileHandlesToAbort.SetCapacity(aTable.Count());
+
+      for (auto iter = aTable.Iter(); !iter.Done(); iter.Next()) {
+        IDBFileHandle* fileHandle = iter.Get()->GetKey();
+        MOZ_ASSERT(fileHandle);
+
+        fileHandle->AssertIsOnOwningThread();
+
+        if (!fileHandle->IsDone()) {
+          fileHandlesToAbort.AppendElement(iter.Get()->GetKey());
+        }
+      }
+      MOZ_ASSERT(fileHandlesToAbort.Length() <= aTable.Count());
+
+      if (fileHandlesToAbort.IsEmpty()) {
+        return;
+      }
+
+      for (RefPtr<IDBFileHandle>& fileHandle : fileHandlesToAbort) {
+        MOZ_ASSERT(fileHandle);
+
+        fileHandle->Abort();
+      }
+    }
+  };
+
+  Helper::AbortFileHandles(mFileHandles);
+}
+
+IDBDatabase*
+IDBMutableFile::Database() const
+{
+  AssertIsOnOwningThread();
+
+  return mDatabase;
+}
+
+already_AddRefed<IDBFileHandle>
+IDBMutableFile::Open(FileMode aMode, ErrorResult& aError)
+{
+  AssertIsOnOwningThread();
+
+  if (QuotaManager::IsShuttingDown() ||
+      mDatabase->IsClosed() ||
+      !GetOwner()) {
+    aError.Throw(NS_ERROR_DOM_FILEHANDLE_UNKNOWN_ERR);
+    return nullptr;
+  }
+
+  RefPtr<IDBFileHandle> fileHandle =
+    IDBFileHandle::Create(this, aMode);
+  if (NS_WARN_IF(!fileHandle)) {
+    aError.Throw(NS_ERROR_DOM_FILEHANDLE_UNKNOWN_ERR);
+    return nullptr;
+  }
+
+  BackgroundFileHandleChild* actor =
+    new BackgroundFileHandleChild(DEBUGONLY(mBackgroundActor->OwningThread(),)
+                                  fileHandle);
+
+  MOZ_ALWAYS_TRUE(
+    mBackgroundActor->SendPBackgroundFileHandleConstructor(actor, aMode));
+
+  fileHandle->SetBackgroundActor(actor);
+
+  return fileHandle.forget();
+}
+
+already_AddRefed<DOMRequest>
+IDBMutableFile::GetFile(ErrorResult& aError)
+{
+  RefPtr<IDBFileHandle> fileHandle = Open(FileMode::Readonly, aError);
+  if (NS_WARN_IF(aError.Failed())) {
+    return nullptr;
+  }
+
+  FileRequestGetFileParams params;
+
+  RefPtr<IDBFileRequest> request =
+    IDBFileRequest::Create(GetOwner(),
+                           fileHandle,
+                           /* aWrapAsDOMRequest */ true);
+
+  fileHandle->StartRequest(request, params);
+
+  return request.forget();
+}
+
+NS_IMPL_ADDREF_INHERITED(IDBMutableFile, DOMEventTargetHelper)
+NS_IMPL_RELEASE_INHERITED(IDBMutableFile, DOMEventTargetHelper)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(IDBMutableFile)
+NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
+
+NS_IMPL_CYCLE_COLLECTION_CLASS(IDBMutableFile)
+
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(IDBMutableFile,
+                                                  DOMEventTargetHelper)
+  tmp->AssertIsOnOwningThread();
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDatabase)
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(IDBMutableFile,
+                                                DOMEventTargetHelper)
+  tmp->AssertIsOnOwningThread();
+
+  // Don't unlink mDatabase!
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+
+JSObject*
+IDBMutableFile::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
+{
+  return IDBMutableFileBinding::Wrap(aCx, this, aGivenProto);
+}
+
+const nsString&
+IDBMutableFile::Name() const
+{
+  AssertIsOnOwningThread();
+
+  return mName;
+}
+
+const nsString&
+IDBMutableFile::Type() const
+{
+  AssertIsOnOwningThread();
+
+  return mType;
+}
+
+bool
+IDBMutableFile::IsInvalidated()
+{
+  AssertIsOnOwningThread();
+
+  return mInvalidated;
+}
+
+already_AddRefed<File>
+IDBMutableFile::CreateFileFor(BlobImpl* aBlobImpl,
+                              FileHandleBase* aFileHandle)
+{
+  AssertIsOnOwningThread();
+
+  RefPtr<BlobImpl> blobImplSnapshot =
+    new BlobImplSnapshot(aBlobImpl, static_cast<IDBFileHandle*>(aFileHandle));
+
+  RefPtr<File> file = File::Create(GetOwner(), blobImplSnapshot);
+  return file.forget();
+}
+
+} // namespace dom
+} // namespace mozilla