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
17 #include "AnrTracker.h"
18
19 namespace android::inputdispatcher {
20
21 template <typename T>
max(const T & a,const T & b)22 static T max(const T& a, const T& b) {
23 return a < b ? b : a;
24 }
25
insert(nsecs_t timeoutTime,sp<IBinder> token)26 void AnrTracker::insert(nsecs_t timeoutTime, sp<IBinder> token) {
27 mAnrTimeouts.insert(std::make_pair(timeoutTime, std::move(token)));
28 }
29
30 /**
31 * Erase a single entry only. If there are multiple duplicate entries
32 * (same time, same connection), then only remove one of them.
33 */
erase(nsecs_t timeoutTime,const sp<IBinder> & token)34 void AnrTracker::erase(nsecs_t timeoutTime, const sp<IBinder>& token) {
35 auto pair = std::make_pair(timeoutTime, token);
36 auto it = mAnrTimeouts.find(pair);
37 if (it != mAnrTimeouts.end()) {
38 mAnrTimeouts.erase(it);
39 }
40 }
41
eraseToken(const sp<IBinder> & token)42 void AnrTracker::eraseToken(const sp<IBinder>& token) {
43 for (auto it = mAnrTimeouts.begin(); it != mAnrTimeouts.end();) {
44 if (it->second == token) {
45 it = mAnrTimeouts.erase(it);
46 } else {
47 ++it;
48 }
49 }
50 }
51
empty() const52 bool AnrTracker::empty() const {
53 return mAnrTimeouts.empty();
54 }
55
56 // If empty() is false, return the time at which the next connection should cause an ANR
57 // If empty() is true, return LONG_LONG_MAX
firstTimeout() const58 nsecs_t AnrTracker::firstTimeout() const {
59 if (mAnrTimeouts.empty()) {
60 return std::numeric_limits<nsecs_t>::max();
61 }
62 return mAnrTimeouts.begin()->first;
63 }
64
firstToken() const65 const sp<IBinder>& AnrTracker::firstToken() const {
66 return mAnrTimeouts.begin()->second;
67 }
68
clear()69 void AnrTracker::clear() {
70 mAnrTimeouts.clear();
71 }
72
73 } // namespace android::inputdispatcher
74