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 <bluetooth/log.h>
20
21 #include <chrono>
22 #include <future>
23 #include <queue>
24
25 #include "common/bind.h"
26 #include "module.h"
27 #include "os/handler.h"
28 #include "os/log.h"
29 #include "os/system_properties.h"
30 #include "os/thread.h"
31 #include "os/wakelock_manager.h"
32
33 using ::bluetooth::os::Handler;
34 using ::bluetooth::os::Thread;
35 using ::bluetooth::os::WakelockManager;
36
37 namespace bluetooth {
38
StartUp(ModuleList * modules,Thread * stack_thread)39 void StackManager::StartUp(ModuleList* modules, Thread* stack_thread) {
40 management_thread_ = new Thread("management_thread", Thread::Priority::NORMAL);
41 handler_ = new Handler(management_thread_);
42
43 WakelockManager::Get().Acquire();
44
45 std::promise<void> promise;
46 auto future = promise.get_future();
47 handler_->Post(common::BindOnce(&StackManager::handle_start_up, common::Unretained(this), modules, stack_thread,
48 std::move(promise)));
49
50 auto init_status = future.wait_for(std::chrono::milliseconds(
51 get_gd_stack_timeout_ms(/* is_start = */ true)));
52
53 WakelockManager::Get().Release();
54
55 log::info("init_status == {}", int(init_status));
56
57 log::assert_that(
58 init_status == std::future_status::ready,
59 "Can't start stack, last instance: {}",
60 registry_.last_instance_);
61
62 log::info("init complete");
63 }
64
handle_start_up(ModuleList * modules,Thread * stack_thread,std::promise<void> promise)65 void StackManager::handle_start_up(ModuleList* modules, Thread* stack_thread, std::promise<void> promise) {
66 registry_.Start(modules, stack_thread);
67 promise.set_value();
68 }
69
ShutDown()70 void StackManager::ShutDown() {
71 WakelockManager::Get().Acquire();
72
73 std::promise<void> promise;
74 auto future = promise.get_future();
75 handler_->Post(common::BindOnce(&StackManager::handle_shut_down, common::Unretained(this), std::move(promise)));
76
77 auto stop_status = future.wait_for(std::chrono::milliseconds(
78 get_gd_stack_timeout_ms(/* is_start = */ false)));
79
80 WakelockManager::Get().Release();
81 WakelockManager::Get().CleanUp();
82
83 log::assert_that(
84 stop_status == std::future_status::ready,
85 "Can't stop stack, last instance: {}",
86 registry_.last_instance_);
87
88 handler_->Clear();
89 handler_->WaitUntilStopped(std::chrono::milliseconds(2000));
90 delete handler_;
91 delete management_thread_;
92 }
93
handle_shut_down(std::promise<void> promise)94 void StackManager::handle_shut_down(std::promise<void> promise) {
95 registry_.StopAll();
96 promise.set_value();
97 }
98
get_gd_stack_timeout_ms(bool is_start)99 std::chrono::milliseconds StackManager::get_gd_stack_timeout_ms(bool is_start) {
100 auto gd_timeout = os::GetSystemPropertyUint32(
101 is_start ? "bluetooth.gd.start_timeout" : "bluetooth.gd.stop_timeout",
102 /* default_value = */ is_start ? 3000 : 5000);
103 return std::chrono::milliseconds(
104 gd_timeout * os::GetSystemPropertyUint32("ro.hw_timeout_multiplier",
105 /* default_value = */ 1));
106 }
107
108 } // namespace bluetooth
109