111 lines
4.1 KiB
C++
111 lines
4.1 KiB
C++
/*
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* Copyright 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <future>
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#include <map>
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#include "common/bind.h"
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#include "hci/address.h"
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#include "hci/hci_layer.h"
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#include "packet/raw_builder.h"
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namespace bluetooth {
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namespace hci {
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packet::PacketView<packet::kLittleEndian> GetPacketView(
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std::unique_ptr<packet::BasePacketBuilder> packet);
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std::unique_ptr<BasePacketBuilder> NextPayload(uint16_t handle);
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class TestHciLayer : public HciLayer {
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public:
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void EnqueueCommand(
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std::unique_ptr<CommandBuilder> command,
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common::ContextualOnceCallback<void(CommandStatusView)> on_status) override;
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void EnqueueCommand(
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std::unique_ptr<CommandBuilder> command,
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common::ContextualOnceCallback<void(CommandCompleteView)> on_complete) override;
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CommandView GetCommand();
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void RegisterEventHandler(EventCode event_code, common::ContextualCallback<void(EventView)> event_handler) override;
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void UnregisterEventHandler(EventCode event_code) override;
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void RegisterLeEventHandler(
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SubeventCode subevent_code, common::ContextualCallback<void(LeMetaEventView)> event_handler) override;
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void UnregisterLeEventHandler(SubeventCode subevent_code) override;
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void IncomingEvent(std::unique_ptr<EventBuilder> event_builder);
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void IncomingLeMetaEvent(std::unique_ptr<LeMetaEventBuilder> event_builder);
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void CommandCompleteCallback(EventView event);
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void CommandStatusCallback(EventView event);
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void IncomingAclData(uint16_t handle);
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void AssertNoOutgoingAclData();
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packet::PacketView<packet::kLittleEndian> OutgoingAclData();
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common::BidiQueueEnd<AclBuilder, AclView>* GetAclQueueEnd() override;
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void Disconnect(uint16_t handle, ErrorCode reason) override;
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protected:
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void ListDependencies(ModuleList* list) const override;
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void Start() override;
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void Stop() override;
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private:
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void InitEmptyCommand();
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void do_disconnect(uint16_t handle, ErrorCode reason);
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// Handler-only state. Mutexes are not needed when accessing these fields.
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std::list<common::ContextualOnceCallback<void(CommandCompleteView)>> command_complete_callbacks;
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std::list<common::ContextualOnceCallback<void(CommandStatusView)>> command_status_callbacks;
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std::map<EventCode, common::ContextualCallback<void(EventView)>> registered_events_;
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std::map<SubeventCode, common::ContextualCallback<void(LeMetaEventView)>> registered_le_events_;
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// thread-safe
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common::BidiQueue<AclView, AclBuilder> acl_queue_{3 /* TODO: Set queue depth */};
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// Most operations must acquire this mutex before manipulating shared state. The ONLY exception
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// is blocking on a promise, IF your thread is the only one mutating it. Note that SETTING a
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// promise REQUIRES a lock, since another thread may replace the promise while you are doing so.
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mutable std::mutex mutex_{};
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// Shared state between the test and stack threads
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std::queue<std::unique_ptr<CommandBuilder>> command_queue_;
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// We start with Consumed=Set, Command=Unset.
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// When a command is enqueued, we set Command=set
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// When a command is popped, we block until Command=Set, then (if the queue is now empty) we
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// reset Command=Unset and set Consumed=Set. This way we emulate a blocking queue.
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std::promise<void> command_promise_{}; // Set when at least one command is in the queue
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std::future<void> command_future_ =
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command_promise_.get_future(); // GetCommand() blocks until this is fulfilled
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CommandView empty_command_view_ = CommandView::Create(
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PacketView<packet::kLittleEndian>(std::make_shared<std::vector<uint8_t>>()));
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};
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} // namespace hci
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} // namespace bluetooth
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