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95 lines
3.0 KiB
95 lines
3.0 KiB
7 months ago
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/******************************************************************************
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*
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* Copyright 2021 Google, Inc.
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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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******************************************************************************/
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#pragma once
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#include <memory>
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#include <mutex>
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#include <string>
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#include <flatbuffers/flatbuffers.h>
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#include "handler.h"
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#include "wakelock_manager_generated.h"
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namespace bluetooth {
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namespace os {
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class WakelockManager {
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public:
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static const std::string kBtWakelockId;
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static WakelockManager& Get() {
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static WakelockManager instance;
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return instance;
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}
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// The set of functions required by GD to grab wake locks. A caller with a custom wakelock implementation should
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// implement this class and passed into the stack through SetCallouts()
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class OsCallouts {
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public:
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virtual ~OsCallouts() = default;
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virtual void AcquireCallout(const std::string& lock_name) = 0;
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virtual void ReleaseCallout(const std::string& lock_name) = 0;
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};
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// Set the Bluetooth OS callouts to |callouts|.
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//
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// This function should be called when native kernel wakelock are not used directly.
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// If this function is not called, or |callouts| is nullptr, then native kernel wakelock will be used.
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// When |callouts| are used, the callbacks are going to be invoked asynchronously to avoid being blocked by upper
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// layer delays. Therefore, a handler is needed and the callout result will be ignored.
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//
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// This method must be called before calling Acquire() or Release()
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void SetOsCallouts(OsCallouts* callouts, Handler* handler);
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// Acquire the Bluetooth wakelock.
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// Return true on success, otherwise false.
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// The function is thread safe.
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bool Acquire();
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// Release the Bluetooth wakelock.
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// Return true on success, otherwise false.
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// The function is thread safe.
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bool Release();
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// Cleanup the wakelock internal runtime state.
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// This will NOT clean up the callouts
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void CleanUp();
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// Dump wakelock-related debug info to a flat buffer defined in wakelock_manager.fbs
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flatbuffers::Offset<WakelockManagerData> GetDumpsysData(flatbuffers::FlatBufferBuilder* fb_builder);
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~WakelockManager();
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private:
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WakelockManager();
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std::recursive_mutex mutex_;
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bool initialized_ = false;
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OsCallouts* os_callouts_ = nullptr;
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Handler* os_callouts_handler_ = nullptr;
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bool is_native_ = true;
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struct Stats;
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std::unique_ptr<Stats> pstats_;
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};
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} // namespace os
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} // namespace bluetooth
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