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/*
* Copyright (C) 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef SRC_ANDROID_INTERNAL_POWER_STATS_H_
#define SRC_ANDROID_INTERNAL_POWER_STATS_H_
#include <stddef.h>
#include <stdint.h>
// This header declares proxy functions defined in
// libperfetto_android_internal.so that allow traced_probes to access internal
// android functions (e.g., hwbinder).
// Do not add any include to either perfetto headers or android headers. See
// README.md for more.
namespace perfetto {
namespace android_internal {
const int32_t ALL_UIDS_FOR_CONSUMER = -1;
struct RailDescriptor {
// Index corresponding to the rail
uint32_t index;
// Name of the rail
char rail_name[64];
// Name of the subsystem to which this rail belongs
char subsys_name[64];
// Hardware sampling rate
uint32_t sampling_rate;
};
struct RailEnergyData {
// Index corresponding to RailDescriptor.index
uint32_t index;
// Time since device boot(CLOCK_BOOTTIME) in milli-seconds
uint64_t timestamp;
// Accumulated energy since device boot in microwatt-seconds (uWs)
uint64_t energy;
};
struct EnergyConsumerInfo {
// Unique ID of this energy consumer. Matches the ID in a
// EnergyEstimationBreakdown.
int32_t energy_consumer_id;
// For a group of energy consumers of the same logical type, sorting by
// ordinal gives their physical order. Ordinals must be consecutive integers
// starting from 0.
int32_t ordinal;
// Type of this energy consumer.
char type[64];
// Unique name of this energy consumer. Vendor/device specific. Opaque to
// framework.
char name[64];
};
struct EnergyEstimationBreakdown {
// Energy consumer ID.
int32_t energy_consumer_id;
// Process uid. ALL_UIDS_FOR_CONSUMER represents energy for all processes
// for the energy_consumer_id.
int32_t uid;
// Energy usage in microwatts-second(µWs).
int64_t energy_uws;
};
extern "C" {
// These functions are not thread safe unless specified otherwise.
bool __attribute__((visibility("default")))
GetAvailableRails(RailDescriptor*, size_t* size_of_arr);
bool __attribute__((visibility("default")))
GetRailEnergyData(RailEnergyData*, size_t* size_of_arr);
bool __attribute__((visibility("default")))
GetEnergyConsumerInfo(EnergyConsumerInfo* consumers, size_t* size_of_arr);
// Retrieve the energy estimation breakdown for all energy consumer. For each
// consumer, there will be an entry with a uid of ALL_UIDS_FOR_CONSUMER,
// followed by the energy breakdown for each process contributing to that
// consumer.
bool __attribute__((visibility("default")))
GetEnergyConsumed(EnergyEstimationBreakdown* breakdown, size_t* size_of_arr);
} // extern "C"
} // namespace android_internal
} // namespace perfetto
#endif // SRC_ANDROID_INTERNAL_POWER_STATS_H_
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