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c6f2890d8e
FileHandle gets a hasDataAvailableForRead() getter. If this returns true in sys$read(), the task will block(BlockedRead) + yield. The fd blocked on is stored in Task::m_fdBlockedOnRead. The scheduler then looks at the state of that fd during the unblock phase. This makes "sh" restful. :^) There's still some problem with the kernel not surviving the colonel task getting scheduled. I need to figure that out and fix it.
14 lines
393 B
C++
14 lines
393 B
C++
#pragma once
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#include "CharacterDevice.h"
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class RandomDevice final : public CharacterDevice {
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public:
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RandomDevice();
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virtual ~RandomDevice() override;
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virtual Unix::ssize_t read(byte* buffer, Unix::size_t bufferSize) override;
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virtual Unix::ssize_t write(const byte* buffer, Unix::size_t bufferSize) override;
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virtual bool hasDataAvailableForRead() const override;
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};
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