gecko-dev/tools/profiler/nsIProfiler.idl

/* -*- 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"

%{C++
template<class T> class nsTArray;
class nsCString;
%}

[ref] native StringArrayRef(const nsTArray<nsCString>);

[scriptable, uuid(f7f3709c-04a9-45c6-8e34-40f762654a78)]
interface nsIProfiler : nsISupports
{
  void StartProfiler(in uint32_t aEntries, in double aInterval,
                      [array, size_is(aFeatureCount)] in string aFeatures,
                      in uint32_t aFeatureCount,
                      [array, size_is(aFilterCount), optional] in string aThreadNameFilters,
                      [optional] in uint32_t aFilterCount);
  void StopProfiler();
  boolean IsPaused();
  void PauseSampling();
  void ResumeSampling();
  void AddMarker(in string aMarker);
  string GetProfile();
  [implicit_jscontext]
  jsval getProfileData();
  boolean IsActive();
  void GetFeatures(out uint32_t 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();
};

/**
 * Start-up parameters for subprocesses are passed through nsIObserverService,
 * which, unfortunately, means we need to implement nsISupports in order to
 * go through it.
 */
[uuid(0a175ba7-8fcf-4ce9-9c4b-ccc6272f4425)]
interface nsIProfilerStartParams : nsISupports
{
  attribute uint32_t entries;
  attribute double interval;

  [noscript, notxpcom, nostdcall] StringArrayRef getFeatures();
  [noscript, notxpcom, nostdcall] StringArrayRef getThreadFilterNames();
};