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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#ifndef VRB_PERFORMANCE_MONITOR_DOT_H
#define VRB_PERFORMANCE_MONITOR_DOT_H
#include "vrb/Forward.h"
#include "vrb/MacroUtils.h"
#include "vrb/Updatable.h"
#include <string>
#include <memory>
namespace vrb {
class PerformanceMonitorObserver {
public:
virtual void PoorPerformanceDetected(const double& aTargetFrameRate, const double& aAverageFrameRate) = 0;
virtual void PerformanceRestored(const double& aTargetFrameRate, const double& aAverageFrameRate) = 0;
protected:
explicit PerformanceMonitorObserver() = default;
~PerformanceMonitorObserver() = default;
VRB_NO_DEFAULTS(PerformanceMonitorObserver)
VRB_NO_NEW_DELETE
};
class PerformanceMonitor : protected Updatable {
public:
static PerformanceMonitorPtr Create(CreationContextPtr& aContext);
double GetAverageFrameRate() const;
double GetPerfomranceDelta() const;
void SetPerformanceDelta(const double aDelta);
void Pause();
void Resume();
void Resample();
void AddPerformanceMonitorObserver(PerformanceMonitorObserverPtr aObserver);
void RemovePerformanceMonitorObserver(const PerformanceMonitorObserver& aObserver);
protected:
struct State;
PerformanceMonitor(State& aState, CreationContextPtr& aContext);
~PerformanceMonitor() = default;
// Updatable interface
void UpdateResource(RenderContext& aContext) override;
private:
VRB_NO_DEFAULTS(PerformanceMonitor)
State& m;
};
class PausePerformanceMonitor {
private:
PerformanceMonitor& mMonitor;
VRB_NO_DEFAULTS(PausePerformanceMonitor)
PausePerformanceMonitor() = delete;
public:
PausePerformanceMonitor(PerformanceMonitor& aMonitor) : mMonitor(aMonitor) {
mMonitor.Pause();
}
~PausePerformanceMonitor() {
mMonitor.Resume();
}
};
}
#endif // VRB_PERFORMANCE_MONITOR_DOT_H