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Move DoubleBuffer to its own files.

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This commit is contained in:
Andreas Kling 2018-12-03 01:51:44 +01:00
parent aff89d2fd7
commit bbfae19238
5 changed files with 56 additions and 49 deletions
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24
Kernel/TTY.h
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@ -1,33 +1,11 @@
#pragma once
#include "DoubleBuffer.h"
#include <VirtualFileSystem/CharacterDevice.h>
#include <VirtualFileSystem/UnixTypes.h>
class Process;
class DoubleBuffer {
public:
DoubleBuffer()
: m_write_buffer(&m_buffer1)
, m_read_buffer(&m_buffer2)
{
}
ssize_t write(const byte*, size_t);
ssize_t read(byte*, size_t);
bool is_empty() const { return m_read_buffer_index >= m_read_buffer->size() && m_write_buffer->isEmpty(); }
private:
void flip();
Vector<byte>* m_write_buffer { nullptr };
Vector<byte>* m_read_buffer { nullptr };
Vector<byte> m_buffer1;
Vector<byte> m_buffer2;
size_t m_read_buffer_index { 0 };
};
class TTY : public CharacterDevice {
public:
virtual ~TTY() override;