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 #pragma once
18 
19 #include <mutex>
20 
21 #include "main/shim/acl.h"
22 #include "main/shim/btm.h"
23 #include "main/shim/link_policy_interface.h"
24 
25 #include "gd/module.h"
26 #include "gd/os/handler.h"
27 #include "gd/os/thread.h"
28 #include "gd/os/utils.h"
29 #include "gd/stack_manager.h"
30 #include "src/bridge.rs.h"
31 
32 // The shim layer implementation on the Gd stack side.
33 namespace bluetooth {
34 namespace shim {
35 
36 // GD shim stack, having modes corresponding to legacy stack
37 class Stack {
38  public:
39   static Stack* GetInstance();
40 
41   Stack() = default;
42   ~Stack() = default;
43 
44   // Idle mode, config is loaded, but controller is not enabled
45   void StartIdleMode();
46   // Running mode, everything is up
47   void StartEverything();
48 
49   void Stop();
50   bool IsRunning();
51   bool IsDumpsysModuleStarted() const;
52 
53   StackManager* GetStackManager();
54   const StackManager* GetStackManager() const;
55 
56   legacy::Acl* GetAcl();
57   LinkPolicyInterface* LinkPolicy();
58 
59   Btm* GetBtm();
60   os::Handler* GetHandler();
61 
GetRustHci()62   ::rust::Box<rust::Hci>* GetRustHci() { return rust_hci_; }
GetRustController()63   ::rust::Box<rust::Controller>* GetRustController() {
64     return rust_controller_;
65   }
66 
67   DISALLOW_COPY_AND_ASSIGN(Stack);
68 
69  private:
70   mutable std::recursive_mutex mutex_;
71   StackManager stack_manager_;
72   bool is_running_ = false;
73   os::Thread* stack_thread_ = nullptr;
74   os::Handler* stack_handler_ = nullptr;
75   legacy::Acl* acl_ = nullptr;
76   Btm* btm_ = nullptr;
77   ::rust::Box<rust::Stack>* rust_stack_ = nullptr;
78   ::rust::Box<rust::Hci>* rust_hci_ = nullptr;
79   ::rust::Box<rust::Controller>* rust_controller_ = nullptr;
80 
81   void Start(ModuleList* modules);
82 };
83 
84 }  // namespace shim
85 }  // namespace bluetooth
86