/usr/include/cxxtools/selectable.h is in libcxxtools-dev 2.0-4ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* As a special exception, you may use this file as part of a free
* software library without restriction. Specifically, if other files
* instantiate templates or use macros or inline functions from this
* file, or you compile this file and link it with other files to
* produce an executable, this file does not by itself cause the
* resulting executable to be covered by the GNU General Public
* License. This exception does not however invalidate any other
* reasons why the executable file might be covered by the GNU Library
* General Public License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef CXXTOOLS_SELECTABLE_H
#define CXXTOOLS_SELECTABLE_H
#include <cxxtools/types.h>
#include <cxxtools/signal.h>
#include <cxxtools/noncopyable.h>
#include <cxxtools/api.h>
#include <cxxtools/selector.h>
namespace cxxtools {
class SelectableImpl;
class CXXTOOLS_API Selectable : protected NonCopyable
{
public:
static const std::size_t WaitInfinite = Selector::WaitInfinite;
enum State
{
Disabled = 0,
Idle = 1,
Busy = 2,
Avail = 3
};
public:
//! @brief Destructor
virtual ~Selectable();
void setSelector(SelectorBase* parent);
SelectorBase* selector();
const SelectorBase* selector() const;
//! @brief Closes the I/O device
/*!
Frees any resources associated with this object, like I/O handles.
*/
void close();
bool wait(std::size_t msecs = WaitInfinite);
//! @brief Test if the I/O device object is enabled
/*!
Test if the I/O device object is enabled i.e. open and ready
to perform I/O operations
\return true if the I/O device is usable, false otherwise.
*/
bool enabled() const;
bool idle() const;
bool busy() const;
bool avail() const;
virtual SelectableImpl& simpl() = 0;
protected:
//! @brief Default Constructor
Selectable();
//! @brief Sets or unsets the device enabled
void setEnabled(bool isEnabled);
//TODO: tell Selector more specifically what changed
// add onReinit() to Selector:
// pass old state as second arg with onChanged()
void setState(State state);
//! @brief Closes the Selector
virtual void onClose() = 0;
virtual bool onWait(std::size_t msecs) = 0;
virtual void onAttach(SelectorBase&) = 0;
virtual void onDetach(SelectorBase&) = 0;
private:
SelectorBase* _parent;
State _state;
};
} // namespace cxxtools
#endif
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