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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
dictionary ProfilerCounterOptions {
/**
* The name of the counter, used for its display in the profiler UI.
*/
required UTF8String name;
/**
* See deriveCounterDisplay() in the Firefox Profiler for options on how different
* counter types can map to display options in the profiler UI.
*
*
* Some categories will match (case-sensitive) existing UI display heuristics, which at
* this time are: Bandwidth, Memory, power, CPU, processCPU
*
* If the category doesn't match, a gray "line-rate" graphType is used.
*/
required UTF8String category;
/**
* A description for the counter. It's stored in the serialized profile, but is not
* currently surfaced anywhere in the profiler UI.
*/
UTF8String description = "";
};
/**
* A counter that records the value of some quantity over the course of a
* profile. The profiler samples the counter's value on each sample and shows
* it as its own track, correlated in time with the sampled stacks and markers.
* This is the same mechanism the profiler uses to track allocated memory, but
* exposed for any quantity a caller wants to observe e.g. queue depth, open
* connections, or cache size.
*
* Create one with ChromeUtils.addProfilerCounter(). The counter is sampled for
* as long as this object is alive.
*/
[ChromeOnly, Exposed=Window]
interface ProfilerCounter {
/**
* Adds the signed delta to the counter's current value. Use a negative delta
* to decrement. The track graphs the running total of all added deltas.
*/
undefined add(long long delta);
};