101 lines
1.8 KiB
C++
101 lines
1.8 KiB
C++
/*
|
|
* \brief Buffer for storing decoded characters
|
|
* \author Norman Feske
|
|
* \date 2011-06-06
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2011-2013 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU General Public License version 2.
|
|
*/
|
|
|
|
#ifndef _TERMINAL__READ_BUFFER_H_
|
|
#define _TERMINAL__READ_BUFFER_H_
|
|
|
|
#include <os/ring_buffer.h>
|
|
#include <base/signal.h>
|
|
|
|
|
|
namespace Terminal {
|
|
|
|
class Read_buffer;
|
|
|
|
enum { READ_BUFFER_SIZE = 4096 };
|
|
}
|
|
|
|
|
|
class Terminal::Read_buffer : public Genode::Ring_buffer<unsigned char, READ_BUFFER_SIZE>
|
|
{
|
|
private:
|
|
|
|
Genode::Signal_context_capability _sigh_cap;
|
|
|
|
public:
|
|
|
|
/**
|
|
* Register signal handler for read-avail signals
|
|
*/
|
|
void sigh(Genode::Signal_context_capability cap)
|
|
{
|
|
_sigh_cap = cap;
|
|
}
|
|
|
|
/**
|
|
* Add element into read buffer and emit signal
|
|
*/
|
|
void add(unsigned char c)
|
|
{
|
|
Genode::Ring_buffer<unsigned char, READ_BUFFER_SIZE>::add(c);
|
|
|
|
if (_sigh_cap.valid())
|
|
Genode::Signal_transmitter(_sigh_cap).submit();
|
|
}
|
|
|
|
void add(char const *str)
|
|
{
|
|
while (*str)
|
|
add(*str++);
|
|
}
|
|
};
|
|
|
|
|
|
enum { READ_BUFFER_SIZE = 4096 };
|
|
|
|
class Read_buffer : public Genode::Ring_buffer<unsigned char, READ_BUFFER_SIZE>
|
|
{
|
|
private:
|
|
|
|
Genode::Signal_context_capability _sigh_cap;
|
|
|
|
public:
|
|
|
|
/**
|
|
* Register signal handler for read-avail signals
|
|
*/
|
|
void sigh(Genode::Signal_context_capability cap)
|
|
{
|
|
_sigh_cap = cap;
|
|
}
|
|
|
|
/**
|
|
* Add element into read buffer and emit signal
|
|
*/
|
|
void add(unsigned char c)
|
|
{
|
|
Genode::Ring_buffer<unsigned char, READ_BUFFER_SIZE>::add(c);
|
|
|
|
if (_sigh_cap.valid())
|
|
Genode::Signal_transmitter(_sigh_cap).submit();
|
|
}
|
|
|
|
void add(char const *str)
|
|
{
|
|
while (*str)
|
|
add(*str++);
|
|
}
|
|
};
|
|
|
|
#endif /* _TERMINAL__READ_BUFFER_H_ */
|