| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROMECAST_BROWSER_CAST_MEMORY_PRESSURE_MONITOR_H_ |
| #define CHROMECAST_BROWSER_CAST_MEMORY_PRESSURE_MONITOR_H_ |
| |
| #include "base/macros.h" |
| #include "base/memory/memory_pressure_monitor.h" |
| #include "base/memory/weak_ptr.h" |
| |
| namespace chromecast { |
| |
| // Memory pressure monitor for Cast: polls for current memory |
| // usage periodically and sends memory pressure notifications. |
| class CastMemoryPressureMonitor : public base::MemoryPressureMonitor { |
| public: |
| CastMemoryPressureMonitor(); |
| ~CastMemoryPressureMonitor() override; |
| |
| // base::MemoryPressureMonitor implementation: |
| MemoryPressureLevel GetCurrentPressureLevel() override; |
| void SetDispatchCallback(const DispatchCallback& callback) override; |
| |
| private: |
| void PollPressureLevel(); |
| void UpdateMemoryPressureLevel(MemoryPressureLevel new_level); |
| |
| const float critical_memory_fraction_; |
| const float moderate_memory_fraction_; |
| |
| MemoryPressureLevel current_level_; |
| const int system_reserved_kb_; |
| DispatchCallback dispatch_callback_; |
| base::WeakPtrFactory<CastMemoryPressureMonitor> weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CastMemoryPressureMonitor); |
| }; |
| |
| } // namespace chromecast |
| |
| #endif // CHROMECAST_BROWSER_CAST_MEMORY_PRESSURE_MONITOR_H_ |