forked from mirrors/gecko-dev
14fee064de
TimerIds are only unique for a given metric, not globally. Differential Revision: https://phabricator.services.mozilla.com/D145988
113 lines
3.8 KiB
C++
113 lines
3.8 KiB
C++
// -*- mode: C++ -*-
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/* This file is auto-generated by run_glean_parser.py.
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It is only for internal use by types in
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toolkit/components/glean/bindings/private */
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#include "mozilla/AppShutdown.h"
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#include "mozilla/ClearOnShutdown.h"
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#include "mozilla/Maybe.h"
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#include "mozilla/Telemetry.h"
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#include "mozilla/Tuple.h"
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#include "mozilla/DataMutex.h"
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#include "nsThreadUtils.h"
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#ifndef mozilla_glean_HistogramGifftMap_h
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#define mozilla_glean_HistogramGifftMap_h
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namespace mozilla::glean {
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using Telemetry::HistogramID;
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using MetricId = uint32_t; // Same type as in api/src/private/mod.rs
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using TimerId = uint64_t; // Same as in TimingDistribution.h.
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using MetricTimerTuple = Tuple<MetricId, TimerId>;
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class MetricTimerTupleHashKey : public PLDHashEntryHdr {
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public:
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using KeyType = const MetricTimerTuple&;
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using KeyTypePointer = const MetricTimerTuple*;
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explicit MetricTimerTupleHashKey(KeyTypePointer aKey) : mValue(*aKey) {}
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MetricTimerTupleHashKey(MetricTimerTupleHashKey&& aOther)
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: PLDHashEntryHdr(std::move(aOther)),
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mValue(std::move(aOther.mValue)) {}
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~MetricTimerTupleHashKey() = default;
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KeyType GetKey() const { return mValue; }
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bool KeyEquals(KeyTypePointer aKey) const {
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return Get<0>(*aKey) == Get<0>(mValue) && Get<1>(*aKey) == Get<1>(mValue);
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}
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static KeyTypePointer KeyToPointer(KeyType aKey) { return &aKey; }
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static PLDHashNumber HashKey(KeyTypePointer aKey) {
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// Chosen because this is how nsIntegralHashKey does it.
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return HashGeneric(Get<0>(*aKey), Get<1>(*aKey));
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}
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enum { ALLOW_MEMMOVE = true };
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private:
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const MetricTimerTuple mValue;
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};
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typedef StaticDataMutex<UniquePtr<nsTHashMap<MetricTimerTupleHashKey, TimeStamp>>> TimerToStampMutex;
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static inline Maybe<TimerToStampMutex::AutoLock> GetTimerIdToStartsLock() {
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static TimerToStampMutex sTimerIdToStarts("sTimerIdToStarts");
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auto lock = sTimerIdToStarts.Lock();
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// GIFFT will work up to the end of AppShutdownTelemetry.
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if (AppShutdown::IsInOrBeyond(ShutdownPhase::XPCOMWillShutdown)) {
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return Nothing();
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}
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if (!*lock) {
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*lock = MakeUnique<nsTHashMap<MetricTimerTupleHashKey, TimeStamp>>();
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RefPtr<nsIRunnable> cleanupFn = NS_NewRunnableFunction(__func__, [&] {
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if (AppShutdown::IsInOrBeyond(ShutdownPhase::XPCOMWillShutdown)) {
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auto lock = sTimerIdToStarts.Lock();
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*lock = nullptr; // deletes, see UniquePtr.h
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return;
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}
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RunOnShutdown([&] {
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auto lock = sTimerIdToStarts.Lock();
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*lock = nullptr; // deletes, see UniquePtr.h
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}, ShutdownPhase::XPCOMWillShutdown);
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});
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// Both getting the main thread and dispatching to it can fail.
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// In that event we leak. Grab a pointer so we have something to NS_RELEASE
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// in that case.
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nsIRunnable* temp = cleanupFn.get();
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nsCOMPtr<nsIThread> mainThread;
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if (NS_FAILED(NS_GetMainThread(getter_AddRefs(mainThread)))
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|| NS_FAILED(mainThread->Dispatch(cleanupFn.forget(), nsIThread::DISPATCH_NORMAL))
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) {
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// Failed to dispatch cleanup routine.
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// First, un-leak the runnable (but only if we actually attempted dispatch)
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if (!cleanupFn) {
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NS_RELEASE(temp);
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}
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// Next, cleanup immediately, and allow metrics to try again later.
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*lock = nullptr;
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return Nothing();
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}
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}
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return Some(std::move(lock));
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}
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static Maybe<HistogramID> HistogramIdForMetric(uint32_t aId) {
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switch(aId) {
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case 12: { // test.timing_distribution_metric
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return Some(HistogramID::SOME_TIME_HISTOGRAM_MS);
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}
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case 13: { // test.memory_distribution_metric
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return Some(HistogramID::SOME_MEM_HISTOGRAM_KB);
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}
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case 14: { // test.custom_distribution_metric
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return Some(HistogramID::SOME_LINEAR_HISTOGRAM);
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}
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default: {
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return Nothing();
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}
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}
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}
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} // namespace mozilla::glean
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#endif // mozilla_glean_HistogramGifftMaps_h
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