/usr/include/stxxl/bits/io/request.h is in libstxxl-dev 1.4.1-2build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* include/stxxl/bits/io/request.h
*
* Part of the STXXL. See http://stxxl.sourceforge.net
*
* Copyright (C) 2002 Roman Dementiev <dementiev@mpi-sb.mpg.de>
* Copyright (C) 2008 Andreas Beckmann <beckmann@cs.uni-frankfurt.de>
* Copyright (C) 2013-2014 Timo Bingmann <tb@panthema.net>
*
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE_1_0.txt or copy at
* http://www.boost.org/LICENSE_1_0.txt)
**************************************************************************/
#ifndef STXXL_IO_REQUEST_HEADER
#define STXXL_IO_REQUEST_HEADER
#include <cassert>
#include <stxxl/bits/namespace.h>
#include <stxxl/bits/io/request_interface.h>
#include <stxxl/bits/common/counting_ptr.h>
#include <stxxl/bits/common/exceptions.h>
#include <stxxl/bits/io/completion_handler.h>
#include <stxxl/bits/compat/unique_ptr.h>
#include <stxxl/bits/verbose.h>
STXXL_BEGIN_NAMESPACE
//! \addtogroup reqlayer
//! \{
#define STXXL_BLOCK_ALIGN 4096
class file;
//! Request object encapsulating basic properties like file and offset.
class request : virtual public request_interface, public atomic_counted_object
{
friend class linuxaio_queue;
protected:
completion_handler m_on_complete;
compat_unique_ptr<stxxl::io_error>::result m_error;
protected:
file* m_file;
void* m_buffer;
offset_type m_offset;
size_type m_bytes;
request_type m_type;
public:
request(const completion_handler& on_compl,
file* file,
void* buffer,
offset_type offset,
size_type bytes,
request_type type);
virtual ~request();
file * get_file() const { return m_file; }
void * get_buffer() const { return m_buffer; }
offset_type get_offset() const { return m_offset; }
size_type get_size() const { return m_bytes; }
request_type get_type() const { return m_type; }
void check_alignment() const;
std::ostream & print(std::ostream& out) const;
//! Inform the request object that an error occurred during the I/O
//! execution.
void error_occured(const char* msg)
{
m_error.reset(new stxxl::io_error(msg));
}
//! Inform the request object that an error occurred during the I/O
//! execution.
void error_occured(const std::string& msg)
{
m_error.reset(new stxxl::io_error(msg));
}
//! Rises an exception if there were error with the I/O.
void check_errors()
{
if (m_error.get())
throw *(m_error.get());
}
virtual const char * io_type() const;
protected:
void check_nref(bool after = false)
{
if (get_reference_count() < 2)
check_nref_failed(after);
}
private:
void check_nref_failed(bool after);
};
inline std::ostream& operator << (std::ostream& out, const request& req)
{
return req.print(out);
}
//! A reference counting pointer for \c request.
typedef counting_ptr<request> request_ptr;
//! \}
STXXL_END_NAMESPACE
#endif // !STXXL_IO_REQUEST_HEADER
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