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