/usr/include/giomm-2.4/giomm/pollableoutputstream.h is in libglibmm-2.4-dev 2.42.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Generated by gmmproc 2.42.0 -- DO NOT MODIFY!
#ifndef _GIOMM_POLLABLEOUTPUTSTREAM_H
#define _GIOMM_POLLABLEOUTPUTSTREAM_H
#include <glibmm/ustring.h>
#include <sigc++/sigc++.h>
// -*- Mode: C++; indent-tabs-mode: nil; c-basic-offset: 2 -*-
/* Copyright (C) 2012 The giomm Development Team
*
* 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.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <glibmm/interface.h>
#ifndef DOXYGEN_SHOULD_SKIP_THIS
typedef struct _GPollableOutputStreamInterface GPollableOutputStreamInterface;
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
#ifndef DOXYGEN_SHOULD_SKIP_THIS
typedef struct _GPollableOutputStream GPollableOutputStream;
typedef struct _GPollableOutputStreamClass GPollableOutputStreamClass;
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
namespace Gio
{ class PollableOutputStream_Class; } // namespace Gio
namespace Gio
{
class Cancellable;
//TODO: Instead derive from OutputStream, when we can break ABI,
//because the GPollableOutputStream interface requires the GOutputStream interface.
//LoadableIcon does a similar thing correctly, for instance.
/** PollableOutputStream - Interface for pollable output streams.
* PollableOutputStream is implemented by OutputStreams that can be polled for
* readiness to write. This can be used when interfacing with a non-GIO API
* that expects UNIX-file-descriptor-style asynchronous I/O rather than
* GIO-style.
* @newin{2,34}
*/
class PollableOutputStream : public Glib::Interface
{
#ifndef DOXYGEN_SHOULD_SKIP_THIS
public:
typedef PollableOutputStream CppObjectType;
typedef PollableOutputStream_Class CppClassType;
typedef GPollableOutputStream BaseObjectType;
typedef GPollableOutputStreamInterface BaseClassType;
private:
friend class PollableOutputStream_Class;
static CppClassType pollableoutputstream_class_;
// noncopyable
PollableOutputStream(const PollableOutputStream&);
PollableOutputStream& operator=(const PollableOutputStream&);
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
protected:
/**
* You should derive from this class to use it.
*/
PollableOutputStream();
#ifndef DOXYGEN_SHOULD_SKIP_THIS
/** Called by constructors of derived classes. Provide the result of
* the Class init() function to ensure that it is properly
* initialized.
*
* @param interface_class The Class object for the derived type.
*/
explicit PollableOutputStream(const Glib::Interface_Class& interface_class);
public:
// This is public so that C++ wrapper instances can be
// created for C instances of unwrapped types.
// For instance, if an unexpected C type implements the C interface.
explicit PollableOutputStream(GPollableOutputStream* castitem);
protected:
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
public:
virtual ~PollableOutputStream();
static void add_interface(GType gtype_implementer);
/** Get the GType for this class, for use with the underlying GObject type system.
*/
static GType get_type() G_GNUC_CONST;
#ifndef DOXYGEN_SHOULD_SKIP_THIS
static GType get_base_type() G_GNUC_CONST;
#endif
///Provides access to the underlying C GObject.
GPollableOutputStream* gobj() { return reinterpret_cast<GPollableOutputStream*>(gobject_); }
///Provides access to the underlying C GObject.
const GPollableOutputStream* gobj() const { return reinterpret_cast<GPollableOutputStream*>(gobject_); }
private:
public:
/** Checks if @a stream is actually pollable. Some classes may implement
* PollableOutputStream but have only certain instances of that
* class be pollable. If this method returns <tt>false</tt>, then the behavior
* of other PollableOutputStream methods is undefined.
*
* For any given stream, the value returned by this method is constant;
* a stream cannot switch from pollable to non-pollable or vice versa.
*
* @newin{2,28}
*
* @return <tt>true</tt> if @a stream is pollable, <tt>false</tt> if not.
*/
bool can_poll() const;
/** Checks if @a stream can be written.
*
* Note that some stream types may not be able to implement this 100%
* reliably, and it is possible that a call to g_output_stream_write()
* after this returns <tt>true</tt> would still block. To guarantee
* non-blocking behavior, you should always use
* g_pollable_output_stream_write_nonblocking(), which will return a
* IO_ERROR_WOULD_BLOCK error rather than blocking.
*
* @newin{2,28}
*
* @return <tt>true</tt> if @a stream is writable, <tt>false</tt> if not. If an error
* has occurred on @a stream, this will result in
* g_pollable_output_stream_is_writable() returning <tt>true</tt>, and the
* next attempt to write will return the error.
*/
bool is_writable() const;
//TODO: _WRAP_METHOD(Glib::RefPtr<Source> create_source(const Glib::RefPtr<Cancellable>& cancellable), g_pollable_output_stream_create_source)
/** Attempts to write up to @a count bytes from @a buffer to @a stream, as
* with g_output_stream_write(). If @a stream is not currently writable,
* this will immediately return IO_ERROR_WOULD_BLOCK, and you can
* use g_pollable_output_stream_create_source() to create a Source
* that will be triggered when @a stream is writable.
*
* Note that since this method never blocks, you cannot actually
* use @a cancellable to cancel it. However, it will return an error
* if @a cancellable has already been cancelled when you call, which
* may happen if you call this method after a source triggers due
* to having been cancelled.
*
* Virtual: write_nonblocking
*
* @param buffer A buffer to write
* data from.
* @param count The number of bytes you want to write.
* @param cancellable A Cancellable, or <tt>0</tt>.
* @return The number of bytes written, or -1 on error (including
* IO_ERROR_WOULD_BLOCK).
*/
gssize write_nonblocking(const void* buffer, gsize count, const Glib::RefPtr<Cancellable>& cancellable);
/// A write_nonblocking() convenience overload.
gssize write_nonblocking(const void* buffer, gsize count);
virtual bool can_poll_vfunc() const;
virtual bool is_writable_vfunc() const;
//TODO:_WRAP_VFUNC(Glib::RefPtr<Source> create_source(const Glib::RefPtr<Cancellable>& cancellable), "create_source")
/// @throws Glib::Error.
virtual gssize write_nonblocking_vfunc(const void* buffer, gsize count);
public:
public:
//C++ methods used to invoke GTK+ virtual functions:
protected:
//GTK+ Virtual Functions (override these to change behaviour):
//Default Signal Handlers::
};
} // namespace Gio
namespace Glib
{
/** A Glib::wrap() method for this object.
*
* @param object The C instance.
* @param take_copy False if the result should take ownership of the C instance. True if it should take a new copy or ref.
* @result A C++ instance that wraps this C instance.
*
* @relates Gio::PollableOutputStream
*/
Glib::RefPtr<Gio::PollableOutputStream> wrap(GPollableOutputStream* object, bool take_copy = false);
} // namespace Glib
#endif /* _GIOMM_POLLABLEOUTPUTSTREAM_H */
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