/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim:set ts=2 sw=2 sts=2 et cindent: */

/* 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/. */

#if !defined(GMPCrashHelper_h_)

#define GMPCrashHelper_h_

#include "MainThreadUtils.h"

#include "nsISupportsImpl.h"

#include "nsPIDOMWindow.h"

namespace mozilla {

// For every GMP actor requested, the caller can specify a crash helper,

// which is an object which supplies the nsPIDOMWindowInner to which we'll

// dispatch the PluginCrashed event if the GMP crashes.

// GMPCrashHelper has threadsafe refcounting. Its release method ensures

// that instances are destroyed on the main thread.

class GMPCrashHelper

{

public:

  NS_METHOD_(MozExternalRefCountType) AddRef(void);

  NS_METHOD_(MozExternalRefCountType) Release(void);

  // Called on the main thread.

  virtual already_AddRefed<nsPIDOMWindowInner> GetPluginCrashedEventTarget() = 0;

protected:

  virtual ~GMPCrashHelper()

  {

    MOZ_ASSERT(NS_IsMainThread());

  }

  void Destroy();

  mozilla::ThreadSafeAutoRefCnt mRefCnt;

  NS_DECL_OWNINGTHREAD

};

} // namespace mozilla

#endif // GMPCrashHelper_h_