/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Firefox.
*
* The Initial Developer of the Original Code is
* the Mozilla Foundation <http://www.mozilla.org/>.
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */

#ifndef PSMRunnable_h
#define PSMRunnable_h

#include "mozilla/Monitor.h"
#include "nsThreadUtils.h"
#include "nsIObserver.h"

namespace mozilla { namespace psm {

// Wait for the event to run on the target thread without spinning the event
// loop on the calling thread. (Dispatching events to a thread using
// NS_DISPATCH_SYNC would cause the event loop on the calling thread to spin.)
class SyncRunnableBase : public nsRunnable
{
public:
  NS_DECL_NSIRUNNABLE
  nsresult DispatchToMainThreadAndWait();
protected:
  SyncRunnableBase();
  virtual void RunOnTargetThread() = 0;
private:
  mozilla::Monitor monitor;
};

class NotifyObserverRunnable : public nsRunnable
{
public:
  NotifyObserverRunnable(nsIObserver * observer,
                         const char * topicStringLiteral)
    : mObserver(), mTopic(topicStringLiteral) { mObserver = observer; }
  NS_DECL_NSIRUNNABLE
private:
  nsCOMPtr<nsIObserver> mObserver;
  const char * const mTopic;
};

} } // namespace mozilla::psm

#endif
