1 /*
2  * Copyright 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 
17 #include "stack_manager.h"
18 
19 #include <chrono>
20 #include <future>
21 #include <queue>
22 
23 #include "common/bind.h"
24 #include "hal/hci_hal.h"
25 #include "module.h"
26 #include "os/handler.h"
27 #include "os/log.h"
28 #include "os/thread.h"
29 
30 using ::bluetooth::os::Handler;
31 using ::bluetooth::os::Thread;
32 
33 namespace bluetooth {
34 
35 void StackManager::StartUp(ModuleList* modules, Thread* stack_thread) {
36   management_thread_ = new Thread("management_thread", Thread::Priority::NORMAL);
37   handler_ = new Handler(management_thread_);
38 
39   std::promise<void> promise;
40   auto future = promise.get_future();
41   handler_->Post(common::BindOnce(&StackManager::handle_start_up, common::Unretained(this), modules, stack_thread,
42                                   std::move(promise)));
43 
44   auto init_status = future.wait_for(std::chrono::seconds(3));
45   ASSERT_LOG(init_status == std::future_status::ready, "Can't start stack");
46 
47   LOG_INFO("init complete");
48 }
49 
50 void StackManager::handle_start_up(ModuleList* modules, Thread* stack_thread, std::promise<void> promise) {
51   registry_.Start(modules, stack_thread);
52   promise.set_value();
53 }
54 
55 void StackManager::ShutDown() {
56   std::promise<void> promise;
57   auto future = promise.get_future();
58   handler_->Post(common::BindOnce(&StackManager::handle_shut_down, common::Unretained(this), std::move(promise)));
59 
60   auto stop_status = future.wait_for(std::chrono::seconds(3));
61   ASSERT_LOG(stop_status == std::future_status::ready, "Can't stop stack");
62 
63   handler_->Clear();
64   handler_->WaitUntilStopped(std::chrono::milliseconds(20));
65   delete handler_;
66   delete management_thread_;
67 }
68 
69 void StackManager::handle_shut_down(std::promise<void> promise) {
70   registry_.StopAll();
71   promise.set_value();
72 }
73 
74 }  // namespace bluetooth
75