1 /*
2  * Copyright (C) 2020 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 #pragma once
17 
18 #include <utils/Errors.h>
19 
20 #include <map>
21 #include <vector>
22 
23 namespace android {
24 
25 struct BinderPidInfo {
26     std::map<uint64_t, std::vector<pid_t>> refPids; // cookie -> processes which hold binder
27     uint32_t threadUsage;                           // number of threads in use
28     uint32_t threadCount;                           // number of threads total
29 };
30 
31 enum class BinderDebugContext {
32     BINDER,
33     HWBINDER,
34     VNDBINDER,
35 };
36 
37 /**
38  * pid is the pid of the service
39  */
40 status_t getBinderPidInfo(BinderDebugContext context, pid_t pid, BinderPidInfo* pidInfo);
41 /**
42  * pid is typically the pid of this process that is making the query
43  */
44 status_t getBinderClientPids(BinderDebugContext context, pid_t pid, pid_t servicePid,
45                              int32_t handle, std::vector<pid_t>* pids);
46 
47 /**
48  * Get the transactions for a given process from /dev/binderfs/binder_logs/transactions
49  * Return: OK if the file was found and the pid was found in the file.
50  *         -errno if there was an issue opening the file
51  *         NAME_NOT_FOUND if the pid wasn't found in the file
52  */
53 status_t getBinderTransactions(pid_t pid, std::string& transactionOutput);
54 
55 } // namespace  android
56