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48 lines
1.4 KiB
48 lines
1.4 KiB
/*
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* Copyright (C) 2020 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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#pragma once
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#include <android-base/unique_fd.h>
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#include <mutex>
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#include <thread>
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#include "data_sink.h"
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namespace goldfish {
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using ::android::base::unique_fd;
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class GnssHwConn {
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public:
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explicit GnssHwConn(const DataSink* sink);
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~GnssHwConn();
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bool ok() const;
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bool start();
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bool stop();
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private:
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static void workerThread(int devFd, int threadsFd, const DataSink* sink);
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static int workerThreadRcvCommand(int fd);
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bool sendWorkerThreadCommand(char cmd) const;
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unique_fd m_devFd; // Goldfish GPS QEMU device
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// a pair of connected sockets to talk to the worker thread
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unique_fd m_callersFd; // a caller writes here
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unique_fd m_threadsFd; // the worker thread listens from here
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std::thread m_thread;
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};
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} // namespace goldfish
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