1 files changed, 113 insertions, 0 deletions
diff --git a/toolkit/components/glean/tests/pytest/gifft_output_Histogram b/toolkit/components/glean/tests/pytest/gifft_output_Histogram
new file mode 100644
index 0000000000..ef01708dfe
--- /dev/null
+++ b/toolkit/components/glean/tests/pytest/gifft_output_Histogram
@@ -0,0 +1,113 @@
+// -*- 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