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