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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/. */
#include "nsISupports.idl"
/**
* Simple stopwatch mechanism for determining the amount of wall-clock time and
* CPU time (user + system) that has elapsed. It is not fancy. It is either
* running or it is not. If you want coherent cpu and real time values, then
* you had better stop it first. It does not keep counting when stopped,
* although one could add a resumeRetroactive or something to accomplish that.
*/
[scriptable, uuid(7a671d6e-d48f-4a4f-b87e-644815a5e381)]
interface nsIStopwatch : nsISupports {
/**
* Start the stopwatch; all counters are reset to zero. If you want to
* keep the already accumulated values, use resume instead.
*/
void start();
/**
* Stop the stopwatch.
*/
void stop();
/**
* Resume the stopwatch without clearing the existing counters. Any time
* already accumulated on cpuTime/realTime will be kept.
*/
void resume();
/**
* The total CPU time (user + system) in seconds accumulated between calls to
* start/resume and stop. You have to stop the stopwatch to cause this value
* to update.
*/
readonly attribute double cpuTimeSeconds;
/**
* The total wall clock time in seconds accumulated between calls to
* start/resume and stop. You have to stop the stopwatch to cause this value
* to update.
*/
readonly attribute double realTimeSeconds;
};
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