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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef ThermalManager_DEFINED
#define ThermalManager_DEFINED
#include "../private/SkTArray.h"
#include "SkString.h"
#if defined(SK_BUILD_FOR_ANDROID) || defined(SK_BUILD_FOR_UNIX)
# define THERMAL_MANAGER_SUPPORTED
#endif
#ifdef THERMAL_MANAGER_SUPPORTED
/*
* This simple class monitors the thermal part of sysfs to ensure we don't trigger thermal events
*/
class ThermalManager {
public:
ThermalManager(int32_t threshold, uint32_t sleepIntervalMs, uint32_t timeoutMs);
bool coolOffIfNecessary();
private:
static int32_t OpenFileAndReadInt32(const char* path);
// current temperature can be read from /thermalZonePath/temp
static int32_t GetTemp(SkString thermalZonePath) {
SkString temperatureFilePath(thermalZonePath);
temperatureFilePath.appendf("/temp");
return OpenFileAndReadInt32(temperatureFilePath.c_str());
}
struct TripPoint {
TripPoint(SkString thermalZoneRoot, SkString pointName, int32_t threshold);
bool willTrip();
SkString fThermalZoneRoot;
SkString fPointName;
int32_t fBase;
int32_t fPoint;
int32_t fThreshold;
// Certain trip points seem to start tripped. For example, I have seen trip points of 0 or
// negative numbers.
bool fDisabled;
};
SkTArray<TripPoint> fTripPoints;
uint32_t fSleepIntervalMs;
uint32_t fTimeoutMs;
};
#endif
#endif
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