1 /* 2 * Copyright (C) 2019 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef SRC_ANDROID_INTERNAL_POWER_STATS_HAL_H_ 18 #define SRC_ANDROID_INTERNAL_POWER_STATS_HAL_H_ 19 20 #include <stddef.h> 21 #include <stdint.h> 22 23 // This header declares proxy functions defined in 24 // libperfetto_android_internal.so that allow traced_probes to access internal 25 // android functions (e.g., hwbinder). 26 // Do not add any include to either perfetto headers or android headers. See 27 // README.md for more. 28 29 namespace perfetto { 30 namespace android_internal { 31 32 struct RailDescriptor { 33 // Index corresponding to the rail 34 uint32_t index; 35 // Name of the rail 36 char rail_name[64]; 37 // Name of the subsystem to which this rail belongs 38 char subsys_name[64]; 39 // Hardware sampling rate 40 uint32_t sampling_rate; 41 }; 42 43 struct RailEnergyData { 44 // Index corresponding to RailDescriptor.index 45 uint32_t index; 46 // Time since device boot(CLOCK_BOOTTIME) in milli-seconds 47 uint64_t timestamp; 48 // Accumulated energy since device boot in microwatt-seconds (uWs) 49 uint64_t energy; 50 }; 51 52 extern "C" { 53 54 // These functions are not thread safe unless specified otherwise. 55 56 bool __attribute__((visibility("default"))) 57 GetAvailableRails(RailDescriptor*, size_t* size_of_arr); 58 59 bool __attribute__((visibility("default"))) 60 GetRailEnergyData(RailEnergyData*, size_t* size_of_arr); 61 62 } // extern "C" 63 64 } // namespace android_internal 65 } // namespace perfetto 66 67 #endif // SRC_ANDROID_INTERNAL_POWER_STATS_HAL_H_ 68
