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 "compat_framework.h" 18 19 #include <sys/types.h> 20 #include <unistd.h> 21 22 #include "android-base/logging.h" 23 #include "thread-current-inl.h" 24 25 namespace art { 26 27 // Compat change states as strings. 28 static constexpr char kUnknownChangeState[] = "UNKNOWN"; 29 static constexpr char kEnabledChangeState[] = "ENABLED"; 30 static constexpr char kDisabledChangeState[] = "DISABLED"; 31 static constexpr char kLoggedState[] = "LOGGED"; 32 CompatFramework()33CompatFramework::CompatFramework() 34 : reported_compat_changes_lock_("reported compat changes lock") {} 35 ~CompatFramework()36CompatFramework::~CompatFramework() {} 37 IsChangeEnabled(uint64_t change_id)38bool CompatFramework::IsChangeEnabled(uint64_t change_id) { 39 const auto enabled = disabled_compat_changes_.count(change_id) == 0; 40 ReportChange(change_id, enabled ? ChangeState::kEnabled : ChangeState::kDisabled); 41 return enabled; 42 } 43 LogChange(uint64_t change_id)44void CompatFramework::LogChange(uint64_t change_id) { 45 ReportChange(change_id, ChangeState::kLogged); 46 } 47 ReportChange(uint64_t change_id,ChangeState state)48void CompatFramework::ReportChange(uint64_t change_id, ChangeState state) { 49 MutexLock mu(Thread::Current(), reported_compat_changes_lock_); 50 bool already_reported = reported_compat_changes_.count(change_id) != 0; 51 if (already_reported) { 52 return; 53 } 54 LOG(DEBUG) << "Compat change id reported: " << change_id << "; UID " << getuid() 55 << "; state: " << ChangeStateToString(state); 56 // TODO(145743810): add an up call to java to log to statsd 57 reported_compat_changes_.emplace(change_id); 58 } 59 ChangeStateToString(ChangeState state)60std::string_view CompatFramework::ChangeStateToString(ChangeState state) { 61 switch (state) { 62 case ChangeState::kUnknown: 63 return kUnknownChangeState; 64 case ChangeState::kEnabled: 65 return kEnabledChangeState; 66 case ChangeState::kDisabled: 67 return kDisabledChangeState; 68 case ChangeState::kLogged: 69 return kLoggedState; 70 } 71 } 72 73 } // namespace art 74