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Measuring elapsed time (deprecated)
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.. important::
Legacy Telemetry collection APIs are now deprecated.
Please use Glean instead.
To make it easier to measure how long operations take, we have helpers for C++.
These helpers record the elapsed time into histograms, so you have to create suitable :doc:`histograms` for them first.
API:
.. code-block:: cpp
void AccumulateTimeDelta(HistogramID id, TimeStamp start, TimeStamp end = TimeStamp::Now());
void AccumulateTimeDelta(HistogramID id, const nsCString& key, TimeStamp start, TimeStamp end = TimeStamp::Now());