зеркало из https://github.com/mozilla/gecko-dev.git
239 строки
9.6 KiB
Plaintext
239 строки
9.6 KiB
Plaintext
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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typedef DOMString HistogramID;
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typedef DOMString HistogramKey;
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[ChromeOnly, Exposed=Window]
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namespace TelemetryStopwatch {
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/**
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* Starts a timer associated with a telemetry histogram. The timer can be
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* directly associated with a histogram, or with a pair of a histogram and
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* an object.
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*
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* @param histogram - a string which must be a valid histogram name.
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*
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* @param obj - Optional parameter. If specified, the timer is
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* associated with this object, meaning that multiple
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* timers for the same histogram may be run
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* concurrently, as long as they are associated with
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* different objects.
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* @param [options.inSeconds=false] - record elapsed time for this
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* histogram in seconds instead of milliseconds. Defaults to
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* false.
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*
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* @returns True if the timer was successfully started, false
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* otherwise. If a timer already exists, it can't be
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* started again, and the existing one will be cleared in
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* order to avoid measurements errors.
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*/
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boolean start(HistogramID histogram, optional object? obj = null,
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optional TelemetryStopwatchOptions options = {});
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/**
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* Returns whether a timer associated with a telemetry histogram is currently
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* running. The timer can be directly associated with a histogram, or with a
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* pair of a histogram and an object.
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*
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* @param histogram - a string which must be a valid histogram name.
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*
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* @param obj - Optional parameter. If specified, the timer is
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* associated with this object, meaning that multiple
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* timers for the same histogram may be run
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* concurrently, as long as they are associated with
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* different objects.
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*
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* @returns True if the timer exists and is currently running.
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*/
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boolean running(HistogramID histogram, optional object? obj = null);
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/**
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* Deletes the timer associated with a telemetry histogram. The timer can be
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* directly associated with a histogram, or with a pair of a histogram and
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* an object. Important: Only use this method when a legitimate cancellation
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* should be done.
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*
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* @param histogram - a string which must be a valid histogram name.
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*
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* @param obj - Optional parameter. If specified, the timer is
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* associated with this object, meaning that multiple
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* timers or a same histogram may be run concurrently,
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* as long as they are associated with different
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* objects.
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*
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* @returns True if the timer exist and it was cleared, False
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* otherwise.
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*/
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boolean cancel(HistogramID histogram, optional object? obj = null);
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/**
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* Returns the elapsed time for a particular stopwatch. Primarily for
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* debugging purposes. Must be called prior to finish.
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*
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* @param histogram - a string which must be a valid histogram name.
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* if an invalid name is given, the function will
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* throw.
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*
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* @param obj - Optional parameter which associates the histogram
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* timer with the given object.
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*
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* @param canceledOkay - Optional parameter which will suppress any
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* warnings that normally fire when a stopwatch
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* is finished after being cancelled. Defaults
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* to false.
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*
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* @returns Time in milliseconds or -1 if the stopwatch was not
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* found.
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*/
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long timeElapsed(HistogramID histogram,
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optional object? obj = null,
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optional boolean canceledOkay = false);
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/**
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* Stops the timer associated with the given histogram (and object),
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* calculates the time delta between start and finish, and adds the value
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* to the histogram.
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*
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* @param histogram - a string which must be a valid histogram name.
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*
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* @param obj - Optional parameter which associates the histogram
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* timer with the given object.
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*
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* @param canceledOkay - Optional parameter which will suppress any
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* warnings that normally fire when a stopwatch
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* is finished after being cancelled. Defaults
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* to false.
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*
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* @returns True if the timer was succesfully stopped and the data
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* was added to the histogram, false otherwise.
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*/
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boolean finish(HistogramID histogram,
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optional object? obj = null,
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optional boolean canceledOkay = false);
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/**
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* Starts a timer associated with a keyed telemetry histogram. The timer can
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* be directly associated with a histogram and its key. Similarly to
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* @see{TelemetryStopwatch.start} the histogram and its key can be associated
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* with an object. Each key may have multiple associated objects and each
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* object can be associated with multiple keys.
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*
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* @param histogram - a string which must be a valid histogram name.
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*
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* @param key - a string which must be a valid histgram key.
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*
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* @param obj - Optional parameter. If specified, the timer is
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* associated with this object, meaning that multiple
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* timers for the same histogram may be run
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* concurrently,as long as they are associated with
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* different objects.
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* @param [options.inSeconds=false] - record elapsed time for this
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* histogram in seconds instead of milliseconds. Defaults to
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* false.
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*
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* @returns True if the timer was successfully started, false
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* otherwise. If a timer already exists, it can't be
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* started again, and the existing one will be cleared in
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* order to avoid measurements errors.
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*/
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boolean startKeyed(HistogramID histogram, HistogramKey key,
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optional object? obj = null,
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optional TelemetryStopwatchOptions options = {});
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/**
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* Returns whether a timer associated with a telemetry histogram is currently
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* running. Similarly to @see{TelemetryStopwatch.running} the timer and its
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* key can be associated with an object. Each key may have multiple associated
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* objects and each object can be associated with multiple keys.
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*
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* @param histogram - a string which must be a valid histogram name.
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*
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* @param key - a string which must be a valid histgram key.
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*
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* @param obj - Optional parameter. If specified, the timer is
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* associated with this object, meaning that multiple
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* timers for the same histogram may be run
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* concurrently, as long as they are associated with
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* different objects.
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*
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* @returns True if the timer exists and is currently running.
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*/
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boolean runningKeyed(HistogramID histogram, HistogramKey key,
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optional object? obj = null);
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/**
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* Deletes the timer associated with a keyed histogram. Important: Only use
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* this method when a legitimate cancellation should be done.
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*
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* @param histogram - a string which must be a valid histogram name.
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*
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* @param key - a string which must be a valid histgram key.
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*
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* @param obj - Optional parameter. If specified, the timer
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* associated with this object is deleted.
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*
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* @returns True if the timer exist and it was cleared, False
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* otherwise.
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*/
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boolean cancelKeyed(HistogramID histogram, HistogramKey key,
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optional object? obj = null);
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/**
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* Returns the elapsed time for a particular stopwatch. Primarily for
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* debugging purposes. Cannot be called after finish().
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*
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* @param histogram - a string which must be a valid histogram name.
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*
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* @param key - a string which must be a valid histgram key.
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*
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* @param obj - Optional parameter. If specified, the timer
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* associated with this object is used to calculate
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* the elapsed time.
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*
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* @returns Time in milliseconds or -1 if the stopwatch was not
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* found.
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*/
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long timeElapsedKeyed(HistogramID histogram, HistogramKey key,
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optional object? obj = null,
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optional boolean canceledOkay = false);
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/**
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* Stops the timer associated with the given keyed histogram (and object),
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* calculates the time delta between start and finish, and adds the value
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* to the keyed histogram.
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*
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* @param histogram - a string which must be a valid histogram name.
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*
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* @param key - a string which must be a valid histgram key.
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*
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* @param obj - optional parameter which associates the histogram
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* timer with the given object.
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*
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* @param canceledOkay - Optional parameter which will suppress any
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* warnings that normally fire when a stopwatch
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* is finished after being cancelled. Defaults
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* to false.
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*
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* @returns True if the timer was succesfully stopped and the data
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* was added to the histogram, false otherwise.
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*/
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boolean finishKeyed(HistogramID histogram, HistogramKey key,
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optional object? obj = null,
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optional boolean canceledOkay = false);
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/**
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* Set the testing mode. Used by tests.
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*/
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void setTestModeEnabled(optional boolean testing = true);
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};
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dictionary TelemetryStopwatchOptions {
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/**
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* If true, record elapsed time for this histogram in seconds instead of
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* milliseconds.
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*/
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boolean inSeconds = false;
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};
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