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 17syntax = "proto2"; 18 19import "launcher_trace.proto"; 20 21package com.android.launcher3.tracing; 22 23option java_multiple_files = true; 24 25/* represents a file full of launcher trace entries. 26 Encoded, it should start with 0x9 0x4C 0x4E 0x43 0x48 0x52 0x54 0x52 0x43 (.LNCHRTRC), such 27 that they can be easily identified. */ 28message LauncherTraceFileProto { 29 30 /* constant; MAGIC_NUMBER = (long) MAGIC_NUMBER_H << 32 | MagicNumber.MAGIC_NUMBER_L 31 (this is needed because enums have to be 32 bits and there's no nice way to put 64bit 32 constants into .proto files. */ 33 enum MagicNumber { 34 INVALID = 0; 35 MAGIC_NUMBER_L = 0x48434E4C; /* LNCH (little-endian ASCII) */ 36 MAGIC_NUMBER_H = 0x43525452; /* RTRC (little-endian ASCII) */ 37 } 38 39 optional fixed64 magic_number = 1; /* Must be the first field, set to value in MagicNumber */ 40 repeated LauncherTraceEntryProto entry = 2; 41} 42 43/* one launcher trace entry. */ 44message LauncherTraceEntryProto { 45 /* required: elapsed realtime in nanos since boot of when this entry was logged */ 46 optional fixed64 elapsed_realtime_nanos = 1; 47 48 optional LauncherTraceProto launcher = 3; 49} 50