mirror of
https://github.com/encounter/engine.git
synced 2026-03-30 11:09:55 -07:00
Adam Barth
64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
// Copyright 2015 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 BASE_MEMORY_MEMORY_PRESSURE_MONITOR_MAC_H_
|
|
#define BASE_MEMORY_MEMORY_PRESSURE_MONITOR_MAC_H_
|
|
|
|
#include <dispatch/dispatch.h>
|
|
|
|
#include "base/base_export.h"
|
|
#include "base/memory/memory_pressure_listener.h"
|
|
#include "base/memory/memory_pressure_monitor.h"
|
|
|
|
// The following was added to <dispatch/source.h> after 10.8.
|
|
// TODO(shrike): Remove the DISPATCH_MEMORYPRESSURE_NORMAL ifndef once builders
|
|
// reach 10.9 or higher.
|
|
#ifndef DISPATCH_MEMORYPRESSURE_NORMAL
|
|
|
|
#define DISPATCH_MEMORYPRESSURE_NORMAL 0x01
|
|
#define DISPATCH_MEMORYPRESSURE_WARN 0x02
|
|
#define DISPATCH_MEMORYPRESSURE_CRITICAL 0x04
|
|
|
|
#endif // DISPATCH_MEMORYPRESSURE_NORMAL
|
|
|
|
namespace base {
|
|
namespace mac {
|
|
|
|
class TestMemoryPressureMonitor;
|
|
|
|
struct DispatchSourceSDeleter {
|
|
void operator()(dispatch_source_s* ptr) {
|
|
dispatch_source_cancel(ptr);
|
|
dispatch_release(ptr);
|
|
}
|
|
};
|
|
|
|
// Declares the interface for the Mac MemoryPressureMonitor, which reports
|
|
// memory pressure events and status.
|
|
class BASE_EXPORT MemoryPressureMonitor : public base::MemoryPressureMonitor {
|
|
public:
|
|
MemoryPressureMonitor();
|
|
~MemoryPressureMonitor() override;
|
|
|
|
// Returns the currently-observed memory pressure.
|
|
MemoryPressureLevel GetCurrentPressureLevel() const override;
|
|
|
|
private:
|
|
friend TestMemoryPressureMonitor;
|
|
|
|
static MemoryPressureLevel
|
|
MemoryPressureLevelForMacMemoryPressure(int mac_memory_pressure);
|
|
static void NotifyMemoryPressureChanged(dispatch_source_s* event_source);
|
|
|
|
scoped_ptr<dispatch_source_s, DispatchSourceSDeleter>
|
|
memory_level_event_source_;
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(MemoryPressureMonitor);
|
|
};
|
|
|
|
} // namespace mac
|
|
} // namespace base
|
|
|
|
#endif // BASE_MEMORY_MEMORY_PRESSURE_MONITOR_MAC_H_
|