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/* -*- 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++
#include "nsTArrayForwardDeclare.h"
class nsCString;
%}
[ref] native StringArrayRef(const nsTArray<nsCString>);
/**
* 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();
};
[scriptable, uuid(ead3f75c-0e0e-4fbb-901c-1e5392ef5b2a)]
interface nsIProfiler : nsISupports
{
boolean CanProfile();
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);
/*
* Returns the JSON string of the profile. If aSinceTime is passed, only
* report samples taken at >= aSinceTime.
*/
string GetProfile([optional] in double aSinceTime);
/*
* Returns a JS object of the profile. If aSinceTime is passed, only report
* samples taken at >= aSinceTime.
*/
[implicit_jscontext]
jsval getProfileData([optional] in double aSinceTime);
[implicit_jscontext]
nsISupports getProfileDataAsync([optional] in double aSinceTime);
boolean IsActive();
void GetFeatures(out uint32_t aCount, [retval, array, size_is(aCount)] out string aFeatures);
/**
* The starting parameters that were sent to the profiler for sampling.
* If the profiler is not currently sampling, this will return null.
*/
readonly attribute nsIProfilerStartParams startParams;
/**
* The profileGatherer will be null if the profiler is not currently
* active.
*/
readonly attribute nsISupports profileGatherer;
void GetBufferInfo(out uint32_t aCurrentPosition, out uint32_t aTotalSize,
out uint32_t aGeneration);
/**
* Returns the elapsed time, in milliseconds, since the profiler's epoch.
* The epoch is guaranteed to be constant for the duration of the
* process, but is otherwise arbitrary.
*/
double getElapsedTime();
/**
* 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();
/**
* Dump the collected profile to a file.
*/
void dumpProfileToFile(in string aFilename);
};
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