write_pool< BlockType > Class Template Reference

Implements dynamically resizable buffered writing pool. More...

#include <write_pool.h>

Inherits noncopyable.

Public Types
typedef BlockType	block_type
typedef block_type::bid_type	bid_type
typedef std::list< block_type * > ::iterator	free_blocks_iterator
typedef std::list< busy_entry > ::iterator	busy_blocks_iterator

Public Member Functions
	write_pool (unsigned_type init_size=1)
	Constructs pool. More...
void	swap (write_pool &obj)
virtual	~write_pool ()
	Waits for completion of all ongoing write requests and frees memory. More...
unsigned_type	size () const
	Returns number of owned blocks. More...
request_ptr	write (block_type *&block, bid_type bid)
	Passes a block to the pool for writing. More...
block_type *	steal ()
	Take out a block from the pool. More...
void	resize (unsigned_type new_size)
	Resizes size of the pool. More...
return	request_ptr ()
bool	has_request (bid_type bid)
std::pair< block_type *, request_ptr >	steal_request (bid_type bid)
void	add (block_type *&block)

Protected Member Functions
void	check_all_busy ()

Protected Attributes
std::list< block_type * >	free_blocks
std::list< busy_entry >	busy_blocks
unsigned_type	free_blocks_size
unsigned_type	busy_blocks_size

Detailed Description

template<class BlockType>
class write_pool< BlockType >

Implements dynamically resizable buffered writing pool.

Constructor & Destructor Documentation

template<class BlockType>

write_pool< BlockType >::write_pool ( unsigned_type  init_size = 1 )

inlineexplicit

Constructs pool.

Parameters

init_size

initial number of blocks in the pool

template<class BlockType>

virtual write_pool< BlockType >::~write_pool ( )

inlinevirtual

Waits for completion of all ongoing write requests and frees memory.

Member Function Documentation

template<class BlockType>

void write_pool< BlockType >::resize ( unsigned_type  new_size )

inline

Resizes size of the pool.

Parameters

new_size

new size of the pool after the call

References write_pool< BlockType >::size(), and write_pool< BlockType >::steal().

Referenced by read_write_pool< BlockType >::resize_write().

template<class BlockType>

unsigned_type write_pool< BlockType >::size ( ) const

inline

Returns number of owned blocks.

Referenced by write_pool< BlockType >::resize(), read_write_pool< BlockType >::size_write(), and write_pool< BlockType >::steal().

template<class BlockType>

block_type* write_pool< BlockType >::steal ( )

inline

Take out a block from the pool.

Returns

pointer to the block. Ownership of the block goes to the caller.

References write_pool< BlockType >::size(), and wait_any().

Referenced by write_pool< BlockType >::resize(), and read_write_pool< BlockType >::steal().

template<class BlockType>

request_ptr write_pool< BlockType >::write ( block_type *&  block, bid_type  bid  )

inline

Passes a block to the pool for writing.

Parameters

block	block to write. Ownership of the block goes to the pool. block must be allocated dynamically with using new .
bid	location, where to write

Warning

block must be allocated dynamically with using new .

Returns

request object of the write operation

Referenced by read_write_pool< BlockType >::write().

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

• write_pool.h