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// -*- mode: C++ -*-
/* This file is auto-generated by run_glean_parser.py.
It is only for internal use by types in
toolkit/components/glean/bindings/private */
#include "mozilla/glean/bindings/HistogramGIFFTMap.h"
#include "mozilla/glean/bindings/GleanJSMetricsLookup.h"
#include "mozilla/glean/bindings/jog/JOG.h"
#define DYNAMIC_METRIC_BIT (26)
#define GLEAN_METRIC_ID(id) ((id) & ((1ULL << 27) - 1))
namespace mozilla::glean {
using Telemetry::HistogramID;
Maybe<HistogramID> HistogramIdForMetric(uint32_t aId) {
switch(aId) {
case 3: { // test.custom_distribution_metric
return Some(HistogramID::SOME_LINEAR_HISTOGRAM);
}
case 10: { // test.memory_distribution_metric
return Some(HistogramID::SOME_MEM_HISTOGRAM_KB);
}
case 15: { // test.timing_distribution_metric
return Some(HistogramID::SOME_TIME_HISTOGRAM_MS);
}
default: {
if (MOZ_UNLIKELY(aId & (1 << DYNAMIC_METRIC_BIT))) {
// Dynamic (runtime-registered) metric. Use its static (compiletime-
// registered) metric's telemetry_mirror mapping.
// ...if applicable.
// Only JS can use dynamic (runtime-registered) metric ids.
MOZ_ASSERT(NS_IsMainThread());
auto metricName = JOG::GetMetricName(aId);
// All of these should have names, but the storage only lasts until
// XPCOMWillShutdown, so it might return `Nothing()`.
if (metricName.isSome()) {
auto maybeMetric = MetricByNameLookup(metricName.ref());
if (maybeMetric.isSome()) {
uint32_t staticId = GLEAN_METRIC_ID(maybeMetric.value());
// Let's ensure we don't infinite loop, huh.
MOZ_ASSERT(!(staticId & (1 << DYNAMIC_METRIC_BIT)));
return HistogramIdForMetric(staticId);
}
}
}
return Nothing();
}
}
}
} // namespace mozilla::glean
#undef GLEAN_METRIC_ID
#undef DYNAMIC_METRIC_BIT
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