/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "nsISupports.idl"

[scriptable, uuid(e388fded-1321-41af-a988-861a2bc5cfc3)]
interface nsIProfiler : nsISupports
{
  void StartProfiler(in PRUint32 aEntries, in PRUint32 aInterval,
                      [array, size_is(aFeatureCount)] in string aFeatures,
                      in PRUint32 aFeatureCount);
  void StopProfiler();
  string GetProfile();
  [implicit_jscontext]
  jsval getProfileData();
  boolean IsActive();
  void GetResponsivenessTimes(out PRUint32 aCount, [retval, array, size_is(aCount)] out double aResult);
  void GetFeatures(out PRUint32 aCount, [retval, array, size_is(aCount)] out string aFeatures);

  /**
   * Returns a JSON string of an array of shared library objects.
   * Every object has three properties: start, end, and name.
   * start and end are integers describing the address range that the library
   * occupies in memory. name is the path of the library as a string.
   *
   * On Windows profiling builds, the shared library objects will have
   * additional pdbSignature and pdbAge properties for uniquely identifying
   * shared library versions for stack symbolication.
   */
  AString getSharedLibraryInformation();
};