Add m-esr52 at 52.6.0

1 files changed, 221 insertions, 0 deletions

diff --git a/dom/filehandle/ActorsParent.h b/dom/filehandle/ActorsParent.h
new file mode 100644
index 0000000000..5d251715ed
--- /dev/null
+++ b/dom/filehandle/ActorsParent.h
@@ -0,0 +1,221 @@
+/* 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/. */
+
+#ifndef mozilla_dom_filehandle_ActorsParent_h
+#define mozilla_dom_filehandle_ActorsParent_h
+
+#include "mozilla/dom/FileHandleStorage.h"
+#include "mozilla/dom/PBackgroundMutableFileParent.h"
+#include "mozilla/ipc/BackgroundParent.h"
+#include "nsAutoPtr.h"
+#include "nsClassHashtable.h"
+#include "nsCOMPtr.h"
+#include "nsHashKeys.h"
+#include "nsString.h"
+#include "nsTArrayForwardDeclare.h"
+#include "nsTHashtable.h"
+
+template <class> struct already_AddRefed;
+class nsIFile;
+class nsIRunnable;
+class nsIThreadPool;
+
+namespace mozilla {
+
+namespace ipc {
+
+class PBackgroundParent;
+
+} // namespace ipc
+
+namespace dom {
+
+class BlobImpl;
+class FileHandle;
+class FileHandleOp;
+
+class FileHandleThreadPool final
+{
+  class FileHandleQueue;
+  struct DelayedEnqueueInfo;
+  class DirectoryInfo;
+  struct StoragesCompleteCallback;
+
+  nsCOMPtr<nsIThreadPool> mThreadPool;
+  nsCOMPtr<nsIEventTarget> mOwningThread;
+
+  nsClassHashtable<nsCStringHashKey, DirectoryInfo> mDirectoryInfos;
+
+  nsTArray<nsAutoPtr<StoragesCompleteCallback>> mCompleteCallbacks;
+
+  bool mShutdownRequested;
+  bool mShutdownComplete;
+
+public:
+  static already_AddRefed<FileHandleThreadPool>
+  Create();
+
+#ifdef DEBUG
+  void
+  AssertIsOnOwningThread() const;
+
+  nsIEventTarget*
+  GetThreadPoolEventTarget() const;
+#else
+  void
+  AssertIsOnOwningThread() const
+  { }
+#endif
+
+  void
+  Enqueue(FileHandle* aFileHandle,
+          FileHandleOp* aFileHandleOp,
+          bool aFinish);
+
+  NS_INLINE_DECL_REFCOUNTING(FileHandleThreadPool)
+
+  void
+  WaitForDirectoriesToComplete(nsTArray<nsCString>&& aDirectoryIds,
+                               nsIRunnable* aCallback);
+
+  void
+  Shutdown();
+
+private:
+  FileHandleThreadPool();
+
+  // Reference counted.
+  ~FileHandleThreadPool();
+
+  nsresult
+  Init();
+
+  void
+  Cleanup();
+
+  void
+  FinishFileHandle(FileHandle* aFileHandle);
+
+  bool
+  MaybeFireCallback(StoragesCompleteCallback* aCallback);
+};
+
+class BackgroundMutableFileParentBase
+  : public PBackgroundMutableFileParent
+{
+  nsTHashtable<nsPtrHashKey<FileHandle>> mFileHandles;
+  nsCString mDirectoryId;
+  nsString mFileName;
+  FileHandleStorage mStorage;
+  bool mInvalidated;
+  bool mActorWasAlive;
+  bool mActorDestroyed;
+
+protected:
+  nsCOMPtr<nsIFile> mFile;
+
+public:
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(BackgroundMutableFileParentBase)
+
+  void
+  Invalidate();
+
+  FileHandleStorage
+  Storage() const
+  {
+    return mStorage;
+  }
+
+  const nsCString&
+  DirectoryId() const
+  {
+    return mDirectoryId;
+  }
+
+  const nsString&
+  FileName() const
+  {
+    return mFileName;
+  }
+
+  bool
+  RegisterFileHandle(FileHandle* aFileHandle);
+
+  void
+  UnregisterFileHandle(FileHandle* aFileHandle);
+
+  void
+  SetActorAlive();
+
+  bool
+  IsActorDestroyed() const
+  {
+    mozilla::ipc::AssertIsOnBackgroundThread();
+
+    return mActorWasAlive && mActorDestroyed;
+  }
+
+  bool
+  IsInvalidated() const
+  {
+    mozilla::ipc::AssertIsOnBackgroundThread();
+
+    return mInvalidated;
+  }
+
+  virtual void
+  NoteActiveState()
+  { }
+
+  virtual void
+  NoteInactiveState()
+  { }
+
+  virtual mozilla::ipc::PBackgroundParent*
+  GetBackgroundParent() const = 0;
+
+  virtual already_AddRefed<nsISupports>
+  CreateStream(bool aReadOnly);
+
+  virtual already_AddRefed<BlobImpl>
+  CreateBlobImpl()
+  {
+    return nullptr;
+  }
+
+protected:
+  BackgroundMutableFileParentBase(FileHandleStorage aStorage,
+                                  const nsACString& aDirectoryId,
+                                  const nsAString& aFileName,
+                                  nsIFile* aFile);
+
+  // Reference counted.
+  ~BackgroundMutableFileParentBase();
+
+  // IPDL methods are only called by IPDL.
+  virtual void
+  ActorDestroy(ActorDestroyReason aWhy) override;
+
+  virtual PBackgroundFileHandleParent*
+  AllocPBackgroundFileHandleParent(const FileMode& aMode) override;
+
+  virtual bool
+  RecvPBackgroundFileHandleConstructor(PBackgroundFileHandleParent* aActor,
+                                       const FileMode& aMode) override;
+
+  virtual bool
+  DeallocPBackgroundFileHandleParent(PBackgroundFileHandleParent* aActor)
+                                     override;
+
+  virtual bool
+  RecvDeleteMe() override;
+
+  virtual bool
+  RecvGetFileId(int64_t* aFileId) override;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_filehandle_ActorsParent_h