genode/repos/os/include/terminal/read_buffer.h
2015-04-17 16:13:21 +02:00

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_ */