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https://github.com/SerenityOS/serenity
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beda478821
Dealing with the unsigned overflow propagation here just seems unreasonably error prone. Let's limit ourselves to 2GB buffer sizes instead.
32 lines
567 B
C++
32 lines
567 B
C++
#pragma once
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#include "DoubleBuffer.h"
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#include <AK/Retainable.h>
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#include <AK/RetainPtr.h>
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#include <Kernel/UnixTypes.h>
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class FIFO : public Retainable<FIFO> {
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public:
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enum Direction {
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Neither, Reader, Writer
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};
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static Retained<FIFO> create();
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void open(Direction);
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void close(Direction);
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ssize_t write(const byte*, ssize_t);
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ssize_t read(byte*, ssize_t);
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bool can_read() const;
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bool can_write() const;
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private:
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FIFO();
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unsigned m_writers { 0 };
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unsigned m_readers { 0 };
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DoubleBuffer m_buffer;
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};
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