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Minimal test - lines (19, 19)

Code

class nsIEventTarget;

Minimal test - lines (23, 25)

Code

namespace ipc {
enum class ResponseRejectReason;
}

Minimal test - lines (31, 70)

Code

class MemoryTelemetry final : public nsIObserver,
                              public nsSupportsWeakReference {
 public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIOBSERVER

  static MemoryTelemetry& Get();

  nsresult GatherReports(
      const std::function& aCompletionCallback = nullptr);

  void GetUniqueSetSize(std::function&& aCallback);

  /**
   * Does expensive initialization, which should happen only after startup has
   * completed, and the event loop is idle.
   */
  nsresult DelayedInit();

  nsresult Shutdown();

 private:
  MemoryTelemetry();

  ~MemoryTelemetry() = default;

  void Init();

  static Result GetOpenTabsCount();

  void GatherTotalMemory();
  nsresult FinishGatheringTotalMemory(int64_t aTotalMemory,
                                      const nsTArray& aChildSizes);

  nsCOMPtr mThreadPool;

  bool mGatheringTotalMemory = false;

  TimeStamp mLastPoll{};
};

Minimal test - lines (21, 72)

Code

namespace mozilla {

namespace ipc {
enum class ResponseRejectReason;
}

/**
 * Periodically gathers memory usage metrics after cycle collection, and
 * populates telemetry histograms with their values.
 */
class MemoryTelemetry final : public nsIObserver,
                              public nsSupportsWeakReference {
 public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIOBSERVER

  static MemoryTelemetry& Get();

  nsresult GatherReports(
      const std::function& aCompletionCallback = nullptr);

  void GetUniqueSetSize(std::function&& aCallback);

  /**
   * Does expensive initialization, which should happen only after startup has
   * completed, and the event loop is idle.
   */
  nsresult DelayedInit();

  nsresult Shutdown();

 private:
  MemoryTelemetry();

  ~MemoryTelemetry() = default;

  void Init();

  static Result GetOpenTabsCount();

  void GatherTotalMemory();
  nsresult FinishGatheringTotalMemory(int64_t aTotalMemory,
                                      const nsTArray& aChildSizes);

  nsCOMPtr mThreadPool;

  bool mGatheringTotalMemory = false;

  TimeStamp mLastPoll{};
};

}  // namespace mozilla