ProfilerCounter.h - mozsearch

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/* 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_ProfilerCounter_h

#define mozilla_dom_ProfilerCounter_h

#include "mozilla/RefPtr.h"

#include "nsCOMPtr.h"

#include "nsISupports.h"

#include "nsWrapperCache.h"

namespace mozilla {

class ChromeProfilerCounter;

namespace dom {

/**

 * The thin, refcounted C++ backing object for the JS ProfilerCounter interface

 * returned by ChromeUtils.addProfilerCounter(). It owns the underlying

 * ChromeProfilerCounter and forwards calls to it, such as Add().

*/

class ProfilerCounter final : public nsISupports, public nsWrapperCache {

 public:

  NS_DECL_CYCLE_COLLECTING_ISUPPORTS_FINAL

  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(ProfilerCounter)

  ProfilerCounter(nsISupports* aParent,

                  already_AddRefed<ChromeProfilerCounter> aCounter);

  void Add(int64_t aDelta);

  nsISupports* GetParentObject() const { return mParent; }

  JSObject* WrapObject(JSContext* aCx,

                       JS::Handle<JSObject*> aGivenProto) override;

 private:

  ~ProfilerCounter();

  nsCOMPtr<nsISupports> mParent;

  RefPtr<ChromeProfilerCounter> mCounter;

};

}  // namespace dom

}  // namespace mozilla

#endif  // mozilla_dom_ProfilerCounter_h