summaryrefslogtreecommitdiffstats
path: root/dom/indexedDB/IDBMutableFile.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'dom/indexedDB/IDBMutableFile.cpp')
-rw-r--r--dom/indexedDB/IDBMutableFile.cpp283
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