stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ > Class Template Reference

Detailed Description

template<class ValueType_, class CompareType_, unsigned BlockSize_, class AllocStr_>
class stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >

Forms sorted runs of data taking elements in sorted order (element by element).

A specialization of runs_creator that allows to create sorted runs data structure usable for runs_merger from sequences of elements in sorted order.

Template Parameters

ValueType_	type of values (parameter for from_sorted_sequences strategy)
CompareType_	type of comparison object used for sorting the runs
BlockSize_	size of blocks used to store the runs
AllocStr_	functor that defines allocation strategy for the runs

Definition at line 703 of file sort_stream.h.

Inheritance diagram for stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >:

Collaboration diagram for stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >:

Public Types
typedef AllocStr_	alloc_strategy_type
typedef typed_block < BlockSize_, value_type >	block_type
typedef CompareType_	cmp_type
typedef sorted_runs_type	result_type
typedef sorted_runs < trigger_entry_type, cmp_type >	sorted_runs_data_type
typedef counting_ptr < sorted_runs_data_type >	sorted_runs_type
typedef sort_helper::trigger_entry < block_type >	trigger_entry_type
typedef ValueType_	value_type

Public Member Functions
	runs_creator (CompareType_ c, unsigned_type memory_to_use)
	Creates the object. More...
void	finish ()
	Finishes current run and begins new one. More...
void	push (const value_type &val)
	Adds new element to the current run. More...
sorted_runs_type &	result ()
	Returns the sorted runs object. More...

Private Types
typedef sorted_runs_data_type::run_type	run_type

Private Attributes
alloc_strategy_type	alloc_strategy
CompareType_	cmp
block_type *	cur_block
unsigned_type	iblock
unsigned_type	irun
unsigned_type	m_
unsigned_type	offset
sorted_runs_type	result_
buffered_writer< block_type >	writer

Additional Inherited Members
Private Member Functions inherited from stxxl::noncopyable
	noncopyable ()

Member Typedef Documentation

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

typedef AllocStr_ stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::alloc_strategy_type

Definition at line 714 of file sort_stream.h.

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

typedef typed_block<BlockSize_, value_type> stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::block_type

Definition at line 712 of file sort_stream.h.

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

typedef CompareType_ stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::cmp_type

Definition at line 717 of file sort_stream.h.

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

typedef sorted_runs_type stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::result_type

Definition at line 720 of file sort_stream.h.

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

typedef sorted_runs_data_type::run_type stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::run_type

private

Definition at line 723 of file sort_stream.h.

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

typedef sorted_runs<trigger_entry_type, cmp_type> stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::sorted_runs_data_type

Definition at line 718 of file sort_stream.h.

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

typedef counting_ptr<sorted_runs_data_type> stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::sorted_runs_type

Definition at line 719 of file sort_stream.h.

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

typedef sort_helper::trigger_entry<block_type> stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::trigger_entry_type

Definition at line 713 of file sort_stream.h.

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

typedef ValueType_ stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::value_type

Definition at line 711 of file sort_stream.h.

Constructor & Destructor Documentation

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::runs_creator ( CompareType_  c, unsigned_type  memory_to_use  )

inline

Creates the object.

Parameters

c	comparator object
memory_to_use	memory amount that is allowed to used by the sorter in bytes. Recommended value: 2 * block_size * D

Definition at line 741 of file sort_stream.h.

References stxxl::sort_memory_usage_factor(), and stxxl::sort_helper::verify_sentinel_strict_weak_ordering().

Member Function Documentation

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

void stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::finish ( )

inline

Finishes current run and begins new one.

Definition at line 793 of file sort_stream.h.

References stxxl::make_bid_iterator(), and stxxl::block_manager::new_blocks().

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

void stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::push ( const value_type &  val )

inline

Adds new element to the current run.

Parameters

val	value to be added to the current run

Definition at line 760 of file sort_stream.h.

References stxxl::make_bid_iterator(), and stxxl::block_manager::new_blocks().

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

sorted_runs_type& stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::result ( )

inline

Returns the sorted runs object.

Returns

Sorted runs object

Remarks

Returned object is intended to be used by runs_merger object as input

Definition at line 836 of file sort_stream.h.

Member Data Documentation

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

alloc_strategy_type stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::alloc_strategy

private

Definition at line 734 of file sort_stream.h.

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

CompareType_ stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::cmp

private

Definition at line 725 of file sort_stream.h.

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

block_type* stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::cur_block

private

Definition at line 730 of file sort_stream.h.

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

unsigned_type stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::iblock

private

Definition at line 732 of file sort_stream.h.

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

unsigned_type stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::irun

private

Definition at line 733 of file sort_stream.h.

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

unsigned_type stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::m_

private

Definition at line 728 of file sort_stream.h.

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

unsigned_type stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::offset

private

Definition at line 731 of file sort_stream.h.

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

sorted_runs_type stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::result_

private

Definition at line 727 of file sort_stream.h.

template<class ValueType_ , class CompareType_ , unsigned BlockSize_, class AllocStr_ >

buffered_writer<block_type> stxxl::stream::runs_creator< from_sorted_sequences< ValueType_ >, CompareType_, BlockSize_, AllocStr_ >::writer

private

Definition at line 729 of file sort_stream.h.

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

• include/stxxl/bits/stream/sort_stream.h