stream::basic_runs_merger< RunsType_, Cmp_, AllocStr_ > Class Template Reference [Stream package]

Merges sorted runs. More...

#include <sort_stream.h>

Inheritance diagram for stream::basic_runs_merger< RunsType_, Cmp_, AllocStr_ >:

Collaboration diagram for stream::basic_runs_merger< RunsType_, Cmp_, AllocStr_ >:

List of all members.

Public Types
typedef sorted_runs_type::value_type	value_type
	Standard stream typedef.
Public Member Functions
	basic_runs_merger (const sorted_runs_type &r, value_cmp c, unsigned_type memory_to_use)
	Creates a runs merger object.
bool	empty () const
	Standard stream method.
const value_type &	operator* () const
	Standard stream method.
const value_type *	operator-> () const
	Standard stream method.
basic_runs_merger &	operator++ ()
	Standard stream method.
virtual	~basic_runs_merger ()
	Destructor.
Protected Types
typedef RunsType_	sorted_runs_type
typedef AllocStr_	alloc_strategy
typedef sorted_runs_type::size_type	size_type
typedef Cmp_	value_cmp
typedef sorted_runs_type::run_type	run_type
typedef sorted_runs_type::block_type	block_type
typedef block_type	out_block_type
typedef run_type::value_type	trigger_entry_type
typedef block_prefetcher < block_type, typename run_type::iterator >	prefetcher_type
typedef run_cursor2 < block_type, prefetcher_type >	run_cursor_type
typedef sort_helper::run_cursor2_cmp < block_type, prefetcher_type, value_cmp >	run_cursor2_cmp_type
typedef loser_tree < run_cursor_type, run_cursor2_cmp_type >	loser_tree_type
typedef stxxl::int64	diff_type
typedef std::pair< typename block_type::iterator, typename block_type::iterator >	sequence
typedef std::vector< sequence > ::size_type	seqs_size_type
Protected Member Functions
void	initialize (const sorted_runs_type &r, unsigned_type memory_to_use)

---

Detailed Description

template<class RunsType_, class Cmp_, class AllocStr_ = stxxl::RC>
class stream::basic_runs_merger< RunsType_, Cmp_, AllocStr_ >

Merges sorted runs.

Template Parameters:

	RunsType_	type of the sorted runs, available as runs_creator::sorted_runs_type ,
	Cmp_	type of comparison object used for merging
	AllocStr_	allocation strategy used to allocate the blocks for storing intermediate results if several merge passes are required

---

Member Typedef Documentation

template<class RunsType_, class Cmp_, class AllocStr_ = stxxl::RC>

typedef sorted_runs_type::value_type stream::basic_runs_merger< RunsType_, Cmp_, AllocStr_ >::value_type

Standard stream typedef.

---

Constructor & Destructor Documentation

template<class RunsType_, class Cmp_, class AllocStr_ = stxxl::RC>

stream::basic_runs_merger< RunsType_, Cmp_, AllocStr_ >::basic_runs_merger	(	const sorted_runs_type &	r,
		value_cmp	c,
		unsigned_type	memory_to_use
	)			[inline]

Creates a runs merger object.

Parameters:

	r	input sorted runs object
	c	comparison object
	memory_to_use	amount of memory available for the merger in bytes

template<class RunsType_, class Cmp_, class AllocStr_ = stxxl::RC>

virtual stream::basic_runs_merger< RunsType_, Cmp_, AllocStr_ >::~basic_runs_merger

(

)

[inline, virtual]

Destructor.

Remarks:

Deallocates blocks of the input sorted runs object

---

Member Function Documentation

template<class RunsType_, class Cmp_, class AllocStr_ = stxxl::RC>

bool stream::basic_runs_merger< RunsType_, Cmp_, AllocStr_ >::empty

(

)

const [inline]

Standard stream method.

Referenced by stream::basic_runs_merger< sorted_runs_type, Cmp_, AllocStr_ >::operator*(), and stream::basic_runs_merger< sorted_runs_type, Cmp_, AllocStr_ >::operator++().

template<class RunsType_, class Cmp_, class AllocStr_ = stxxl::RC>

const value_type& stream::basic_runs_merger< RunsType_, Cmp_, AllocStr_ >::operator*

(

)

const [inline]

Standard stream method.

Referenced by stream::basic_runs_merger< sorted_runs_type, Cmp_, AllocStr_ >::operator->().

template<class RunsType_, class Cmp_, class AllocStr_ = stxxl::RC>

basic_runs_merger& stream::basic_runs_merger< RunsType_, Cmp_, AllocStr_ >::operator++

(

)

[inline]

Standard stream method.

template<class RunsType_, class Cmp_, class AllocStr_ = stxxl::RC>

const value_type* stream::basic_runs_merger< RunsType_, Cmp_, AllocStr_ >::operator->

(

)

const [inline]

Standard stream method.

---

The documentation for this class was generated from the following file:

• sort_stream.h