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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/AppShutdown.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/Maybe.h"
#include "mozilla/Telemetry.h"
#include "mozilla/Tuple.h"
#include "mozilla/DataMutex.h"
#include "nsThreadUtils.h"
#ifndef mozilla_glean_HistogramGifftMap_h
#define mozilla_glean_HistogramGifftMap_h
namespace mozilla::glean {
using Telemetry::HistogramID;
using MetricId = uint32_t; // Same type as in api/src/private/mod.rs
using TimerId = uint64_t; // Same as in TimingDistribution.h.
using MetricTimerTuple = Tuple<MetricId, TimerId>;
class MetricTimerTupleHashKey : public PLDHashEntryHdr {
public:
using KeyType = const MetricTimerTuple&;
using KeyTypePointer = const MetricTimerTuple*;
explicit MetricTimerTupleHashKey(KeyTypePointer aKey) : mValue(*aKey) {}
MetricTimerTupleHashKey(MetricTimerTupleHashKey&& aOther)
: PLDHashEntryHdr(std::move(aOther)),
mValue(std::move(aOther.mValue)) {}
~MetricTimerTupleHashKey() = default;
KeyType GetKey() const { return mValue; }
bool KeyEquals(KeyTypePointer aKey) const {
return Get<0>(*aKey) == Get<0>(mValue) && Get<1>(*aKey) == Get<1>(mValue);
}
static KeyTypePointer KeyToPointer(KeyType aKey) { return &aKey; }
static PLDHashNumber HashKey(KeyTypePointer aKey) {
// Chosen because this is how nsIntegralHashKey does it.
return HashGeneric(Get<0>(*aKey), Get<1>(*aKey));
}
enum { ALLOW_MEMMOVE = true };
private:
const MetricTimerTuple mValue;
};
typedef StaticDataMutex<UniquePtr<nsTHashMap<MetricTimerTupleHashKey, TimeStamp>>> TimerToStampMutex;
static inline Maybe<TimerToStampMutex::AutoLock> GetTimerIdToStartsLock() {
static TimerToStampMutex sTimerIdToStarts("sTimerIdToStarts");
auto lock = sTimerIdToStarts.Lock();
// GIFFT will work up to the end of AppShutdownTelemetry.
if (AppShutdown::IsInOrBeyond(ShutdownPhase::XPCOMWillShutdown)) {
return Nothing();
}
if (!*lock) {
*lock = MakeUnique<nsTHashMap<MetricTimerTupleHashKey, TimeStamp>>();
RefPtr<nsIRunnable> cleanupFn = NS_NewRunnableFunction(__func__, [&] {
if (AppShutdown::IsInOrBeyond(ShutdownPhase::XPCOMWillShutdown)) {
auto lock = sTimerIdToStarts.Lock();
*lock = nullptr; // deletes, see UniquePtr.h
return;
}
RunOnShutdown([&] {
auto lock = sTimerIdToStarts.Lock();
*lock = nullptr; // deletes, see UniquePtr.h
}, ShutdownPhase::XPCOMWillShutdown);
});
// Both getting the main thread and dispatching to it can fail.
// In that event we leak. Grab a pointer so we have something to NS_RELEASE
// in that case.
nsIRunnable* temp = cleanupFn.get();
nsCOMPtr<nsIThread> mainThread;
if (NS_FAILED(NS_GetMainThread(getter_AddRefs(mainThread)))
|| NS_FAILED(mainThread->Dispatch(cleanupFn.forget(), nsIThread::DISPATCH_NORMAL))
) {
// Failed to dispatch cleanup routine.
// First, un-leak the runnable (but only if we actually attempted dispatch)
if (!cleanupFn) {
NS_RELEASE(temp);
}
// Next, cleanup immediately, and allow metrics to try again later.
*lock = nullptr;
return Nothing();
}
}
return Some(std::move(lock));
}
static Maybe<HistogramID> HistogramIdForMetric(uint32_t aId) {
switch(aId) {
case 12: { // test.timing_distribution_metric
return Some(HistogramID::SOME_TIME_HISTOGRAM_MS);
}
case 13: { // test.memory_distribution_metric
return Some(HistogramID::SOME_MEM_HISTOGRAM_KB);
}
case 14: { // test.custom_distribution_metric
return Some(HistogramID::SOME_LINEAR_HISTOGRAM);
}
default: {
return Nothing();
}
}
}
} // namespace mozilla::glean
#endif // mozilla_glean_HistogramGifftMaps_h
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