42 lines
990 B
C++
42 lines
990 B
C++
/*
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* IXSelectInterruptPipe.h
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* Author: Benjamin Sergeant
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* Copyright (c) 2018-2019 Machine Zone, Inc. All rights reserved.
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*/
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#pragma once
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#include "IXSelectInterrupt.h"
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#include <stdint.h>
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#include <string>
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#include <mutex>
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namespace ix
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{
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class SelectInterruptPipe final : public SelectInterrupt {
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public:
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SelectInterruptPipe();
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virtual ~SelectInterruptPipe();
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bool init(std::string& errorMsg) final;
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bool notify(uint64_t value) final;
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bool clear() final;
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uint64_t read() final;
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int getFd() const final;
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private:
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// Store file descriptors used by the communication pipe. Communication
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// happens between a control thread and a background thread, which is
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// blocked on select.
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int _fildes[2];
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mutable std::mutex _fildesMutex;
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// Used to identify the read/write idx
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static const int kPipeReadIndex;
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static const int kPipeWriteIndex;
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};
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}
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