Tom Cherry | 7fd3bc2 | 2018-02-13 15:36:14 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2018 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 "action_manager.h" |
| 18 | |
| 19 | #include <android-base/logging.h> |
| 20 | |
| 21 | namespace android { |
| 22 | namespace init { |
| 23 | |
| 24 | ActionManager::ActionManager() : current_command_(0) {} |
| 25 | |
Tom Cherry | 4772f1d | 2019-07-30 09:34:41 -0700 | [diff] [blame] | 26 | size_t ActionManager::CheckAllCommands() { |
| 27 | size_t failures = 0; |
| 28 | for (const auto& action : actions_) { |
| 29 | failures += action->CheckAllCommands(); |
| 30 | } |
| 31 | return failures; |
| 32 | } |
| 33 | |
Tom Cherry | 7fd3bc2 | 2018-02-13 15:36:14 -0800 | [diff] [blame] | 34 | ActionManager& ActionManager::GetInstance() { |
| 35 | static ActionManager instance; |
| 36 | return instance; |
| 37 | } |
| 38 | |
| 39 | void ActionManager::AddAction(std::unique_ptr<Action> action) { |
| 40 | actions_.emplace_back(std::move(action)); |
| 41 | } |
| 42 | |
| 43 | void ActionManager::QueueEventTrigger(const std::string& trigger) { |
Tom Cherry | 802864c | 2020-03-12 14:29:25 -0700 | [diff] [blame] | 44 | auto lock = std::lock_guard{event_queue_lock_}; |
Tom Cherry | 7fd3bc2 | 2018-02-13 15:36:14 -0800 | [diff] [blame] | 45 | event_queue_.emplace(trigger); |
| 46 | } |
| 47 | |
| 48 | void ActionManager::QueuePropertyChange(const std::string& name, const std::string& value) { |
Tom Cherry | 802864c | 2020-03-12 14:29:25 -0700 | [diff] [blame] | 49 | auto lock = std::lock_guard{event_queue_lock_}; |
Tom Cherry | 7fd3bc2 | 2018-02-13 15:36:14 -0800 | [diff] [blame] | 50 | event_queue_.emplace(std::make_pair(name, value)); |
| 51 | } |
| 52 | |
| 53 | void ActionManager::QueueAllPropertyActions() { |
| 54 | QueuePropertyChange("", ""); |
| 55 | } |
| 56 | |
| 57 | void ActionManager::QueueBuiltinAction(BuiltinFunction func, const std::string& name) { |
Tom Cherry | 802864c | 2020-03-12 14:29:25 -0700 | [diff] [blame] | 58 | auto lock = std::lock_guard{event_queue_lock_}; |
Tom Cherry | 9cbf570 | 2018-02-13 16:24:51 -0800 | [diff] [blame] | 59 | auto action = std::make_unique<Action>(true, nullptr, "<Builtin Action>", 0, name, |
| 60 | std::map<std::string, std::string>{}); |
Tom Cherry | 7c1d87e | 2019-07-10 11:18:24 -0700 | [diff] [blame] | 61 | action->AddCommand(std::move(func), {name}, 0); |
Tom Cherry | 7fd3bc2 | 2018-02-13 15:36:14 -0800 | [diff] [blame] | 62 | |
| 63 | event_queue_.emplace(action.get()); |
| 64 | actions_.emplace_back(std::move(action)); |
| 65 | } |
| 66 | |
| 67 | void ActionManager::ExecuteOneCommand() { |
Tom Cherry | 802864c | 2020-03-12 14:29:25 -0700 | [diff] [blame] | 68 | { |
| 69 | auto lock = std::lock_guard{event_queue_lock_}; |
| 70 | // Loop through the event queue until we have an action to execute |
| 71 | while (current_executing_actions_.empty() && !event_queue_.empty()) { |
| 72 | for (const auto& action : actions_) { |
| 73 | if (std::visit([&action](const auto& event) { return action->CheckEvent(event); }, |
| 74 | event_queue_.front())) { |
| 75 | current_executing_actions_.emplace(action.get()); |
| 76 | } |
Tom Cherry | 7fd3bc2 | 2018-02-13 15:36:14 -0800 | [diff] [blame] | 77 | } |
Tom Cherry | 802864c | 2020-03-12 14:29:25 -0700 | [diff] [blame] | 78 | event_queue_.pop(); |
Tom Cherry | 7fd3bc2 | 2018-02-13 15:36:14 -0800 | [diff] [blame] | 79 | } |
Tom Cherry | 7fd3bc2 | 2018-02-13 15:36:14 -0800 | [diff] [blame] | 80 | } |
| 81 | |
| 82 | if (current_executing_actions_.empty()) { |
| 83 | return; |
| 84 | } |
| 85 | |
| 86 | auto action = current_executing_actions_.front(); |
| 87 | |
| 88 | if (current_command_ == 0) { |
| 89 | std::string trigger_name = action->BuildTriggersString(); |
| 90 | LOG(INFO) << "processing action (" << trigger_name << ") from (" << action->filename() |
| 91 | << ":" << action->line() << ")"; |
| 92 | } |
| 93 | |
| 94 | action->ExecuteOneCommand(current_command_); |
| 95 | |
| 96 | // If this was the last command in the current action, then remove |
| 97 | // the action from the executing list. |
| 98 | // If this action was oneshot, then also remove it from actions_. |
| 99 | ++current_command_; |
| 100 | if (current_command_ == action->NumCommands()) { |
| 101 | current_executing_actions_.pop(); |
| 102 | current_command_ = 0; |
| 103 | if (action->oneshot()) { |
| 104 | auto eraser = [&action](std::unique_ptr<Action>& a) { return a.get() == action; }; |
Tom Cherry | 247ffbf | 2019-07-08 15:09:36 -0700 | [diff] [blame] | 105 | actions_.erase(std::remove_if(actions_.begin(), actions_.end(), eraser), |
| 106 | actions_.end()); |
Tom Cherry | 7fd3bc2 | 2018-02-13 15:36:14 -0800 | [diff] [blame] | 107 | } |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | bool ActionManager::HasMoreCommands() const { |
Tom Cherry | 802864c | 2020-03-12 14:29:25 -0700 | [diff] [blame] | 112 | auto lock = std::lock_guard{event_queue_lock_}; |
Tom Cherry | 7fd3bc2 | 2018-02-13 15:36:14 -0800 | [diff] [blame] | 113 | return !current_executing_actions_.empty() || !event_queue_.empty(); |
| 114 | } |
| 115 | |
| 116 | void ActionManager::DumpState() const { |
| 117 | for (const auto& a : actions_) { |
| 118 | a->DumpState(); |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | void ActionManager::ClearQueue() { |
Tom Cherry | 802864c | 2020-03-12 14:29:25 -0700 | [diff] [blame] | 123 | auto lock = std::lock_guard{event_queue_lock_}; |
Tom Cherry | 7fd3bc2 | 2018-02-13 15:36:14 -0800 | [diff] [blame] | 124 | // We are shutting down so don't claim the oneshot builtin actions back |
| 125 | current_executing_actions_ = {}; |
| 126 | event_queue_ = {}; |
| 127 | current_command_ = 0; |
| 128 | } |
| 129 | |
| 130 | } // namespace init |
| 131 | } // namespace android |