byte_allocator Class Reference

high performance class for allocation More...

#include <memory.h>

Inheritance diagram for byte_allocator:

List of all members.

Public Member Functions
	byte_allocator (size_t capacity=os_def_size)
	constructor
	~byte_allocator ()
	destructor
void	clear_all (bool secure=false)
	clears all memory
void	clear_extra (bool secure=false)
	clears only extra chunks
void	reset (bool secure=false)
	resets allocator for reusing the memory again
void *	allocate (size_t size)
	allocates required array of bytes
void	deallocate (void *)
	does nothing
size_t	capacity () const
	returns the capacity of chunk
size_t	count () const
	returns the count of chunks
Protected Attributes
const size_t	_capacity
	chunk default capacity
size_t	_count
	current count of allocated chunks of memory
unsigned char *	_free_pos
	start position of available memory in current chunk
mem_chunk *	_start_chunk
	start chunk
mem_chunk *	_using_chunk
	current chunk
Private Member Functions
	byte_allocator (const byte_allocator &x)
	private copy constructor
byte_allocator &	operator= (const byte_allocator &x)
	private assign operator
void *	new_chunk (size_t size)
	allocates new chunk of requested size
void *	next_chunk (size_t size)
	tries to find the next chunk in a linked list with requested size

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Detailed Description

high performance class for allocation

Definition at line 59 of file memory.h.

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Constructor & Destructor Documentation

byte_allocator::byte_allocator

(

const byte_allocator &

x

)

[private]

private copy constructor

BEGIN_TERIMBER_NAMESPACE byte_allocator::byte_allocator

(

size_t

capacity = os_def_size

)

constructor

Parameters:

capacity

chunk capacity

Definition at line 34 of file memory.cpp.

byte_allocator::~byte_allocator

(

)

destructor

Definition at line 39 of file memory.cpp.

References clear_all().

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Member Function Documentation

byte_allocator& byte_allocator::operator=

(

const byte_allocator &

x

)

[private]

private assign operator

void byte_allocator::clear_all

(

bool

secure = false

)

clears all memory

Parameters:

secure

rewrite memory before release

Reimplemented in rep_allocator.

Definition at line 123 of file memory.cpp.

References mem_chunk::_chunk_size, _count, mem_chunk::_mem, mem_chunk::_next_chunk, _start_chunk, _using_chunk, and reset().

Referenced by rep_allocator::clear_all(), byte_allocator_creator::deactivate(), cluster_engine_impl::do_clustering(), memtable::uninit(), and ~byte_allocator().

void byte_allocator::clear_extra

(

bool

secure = false

)

clears only extra chunks

Parameters:

secure

rewrite memory before release

Reimplemented in rep_allocator.

Definition at line 99 of file memory.cpp.

References mem_chunk::_chunk_size, _count, mem_chunk::_mem, mem_chunk::_next_chunk, _start_chunk, _using_chunk, and reset().

Referenced by byte_allocator_creator::back(), xml_grammar::clear(), xml_document::clear(), rep_allocator::clear_extra(), byte_backet< N, M >::reset(), orcl_dbserver::v_disconnect(), odbc_dbserver::v_disconnect(), and mysql_dbserver::v_disconnect().

void byte_allocator::reset

(

bool

secure = false

)

[inline]

resets allocator for reusing the memory again

Parameters:

secure

rewrite memory before release

Reimplemented in rep_allocator.

Definition at line 91 of file memory.hpp.

References mem_chunk::_chunk_size, _free_pos, mem_chunk::_mem, mem_chunk::_next_chunk, _start_chunk, and _using_chunk.

Referenced by byte_allocator_creator::back(), clear_all(), clear_extra(), variant_factory::clone(), dbserver_impl::close_sql(), memlookup::construct(), cluster_processor< T, N >::cut(), var_object_repository::delete_object(), msg_communicator::destroy_msg(), dbserver_impl::fetch_data(), dbserver_impl::get_param_as_value(), xml_designer_impl::get_value(), memlookup::get_value_as_value(), terimber_db_value_vector_impl::get_value_as_value(), dbserver_impl::get_value_as_value(), xml_designer_impl::get_xpath(), fuzzy_matcher_impl::match(), dbserver_impl::param_bulk_remove(), dbserver_impl::param_bulk_remove_all(), xml_processor::parse(), xml_processor::parseElement(), xml_processor::parseEndTag(), xml_processor::parseMisc(), xml_processor::parseProlog(), xml_processor::parseStartTag(), dtd_processor::parseSubSet(), xml_persistor::persist(), xml_persistor::persistAttributes(), mst< T, N >::pfs(), variant_factory::reset(), string_backet< N, M >::reset(), rep_allocator::reset(), byte_manager::reset_all_tmp(), byte_source::reset_buffer(), xml_persistor::restore_stack(), and xml_designer_impl::select_xpath().

void * byte_allocator::allocate

(

size_t

size

)

[inline]

allocates required array of bytes

Parameters:

size	size if bytes

Reimplemented in array_allocator< T >, array_allocator< terimber_index_column_info_ex >, array_allocator< var_object_map_t::mainmap_iter_t >, and array_allocator< binder >.

Definition at line 109 of file memory.hpp.

References mem_chunk::_chunk_size, _free_pos, mem_chunk::_mem, _using_chunk, ALIGNED_SIZEOF, and next_chunk().

Referenced by _stack< T, A >::_buynode(), _map< K, T, A, Pr, M >::_buynode(), _list< T, A >::_buynode(), _vector< T, A >::_buynodes(), base_string< T >::_create(), fuzzy_matcher_impl::_match(), paged_buffer::_persist(), fuzzy_matcher_impl::add(), xml_document::add_attribute(), xml_document::add_cdata(), xml_document::add_comment(), xml_document::add_element(), xml_document::add_element_desc(), xml_document::add_entity_desc(), xml_document::add_notation_desc(), xml_document::add_pi(), xml_document::add_text(), string_backet< N, M >::allocate(), array_allocator< T >::allocate(), node_allocator< T >::allocate(), byte_backet< N, M >::allocate(), dfa_token::assign(), _bitset::assign(), xml_document::assign_attribute_value(), backet_tank< N >::backet_tank(), content_children::build_children_tree(), content_children::build_dfa(), byte_consumer::byte_consumer(), byte_source::byte_source(), byte_tank< N >::byte_tank(), var_object_repository::cast_to_common_type(), dtd_processor::checkRepeation(), msg_cpp::construct(), fuzzyphonetic::convert_to_metaphone(), fuzzyphonetic::convert_to_reflection(), xml_grammar::copy(), copy_db_row(), copy_string(), copy_value(), dbserver_impl::get_param_as_numeric(), memlookup::get_value_as_numeric(), terimber_db_value_vector_impl::get_value_as_numeric(), dbserver_impl::get_value_as_numeric(), xml_designer_impl::get_xpath(), buffer_loader::load(), fuzzy_matcher_impl::make_string_lower(), fuzzyphonetic::metaphone_distance(), str_template::multibyte_to_unicode(), paged_buffer::paged_buffer(), parse_value(), dtd_processor::parseChildren(), dtd_processor::parseMixed(), fuzzy_matcher_impl::partial_intersect(), persist_value(), content_children::post_tree_build_init(), byte_source::push(), fuzzy_matcher_impl::reconstruct_string(), fuzzy_matcher_impl::remove(), room_array< T >::resize(), msg_cpp::resize(), _bitset::resize(), room_array< T >::room_array(), str_template::unicode_to_multibyte(), orcl_dbserver::v_bind_one_column(), odbc_dbserver::v_bind_one_column(), mysql_dbserver::v_bind_one_column(), orcl_dbserver::v_bind_one_param(), odbc_dbserver::v_bind_one_param(), mysql_dbserver::v_bind_one_param(), orcl_dbserver::v_convert_one_value(), odbc_dbserver::v_convert_one_value(), mysql_dbserver::v_convert_one_value(), odbc_dbserver::v_get_one_column_info(), orcl_dbserver::v_replace_quote(), odbc_dbserver::v_replace_quote(), mysql_dbserver::v_replace_quote(), and xml_document::validate_children().

void byte_allocator::deallocate

(

void *

)

[inline]

does nothing

Reimplemented in rep_allocator.

Definition at line 130 of file memory.hpp.

Referenced by base_string< T >::_add(), base_string< T >::_assign(), base_string< T >::_destroy(), and room_array< T >::clear().

size_t byte_allocator::capacity

(

)

const [inline]

returns the capacity of chunk

Definition at line 137 of file memory.hpp.

References _capacity.

Referenced by aiogate::doxray(), array_allocator_creator< T >::find(), node_allocator_creator< T >::find(), byte_allocator_creator::find(), varmap< T, C >::get_main_object_allocator_capacity(), and stack< T >::operator=().

size_t byte_allocator::count

(

)

const [inline]

returns the count of chunks

Definition at line 145 of file memory.hpp.

References _count.

Referenced by array_allocator_creator< T >::back(), node_allocator_creator< T >::back(), byte_allocator_creator::back(), aiogate::doxray(), and varmap< T, C >::get_main_object_allocator_pages().

void * byte_allocator::new_chunk

(

size_t

size

)

[private]

allocates new chunk of requested size

Parameters:

size	size in bytes

Definition at line 45 of file memory.cpp.

References _capacity, mem_chunk::_chunk_size, _count, _free_pos, mem_chunk::_mem, mem_chunk::_next_chunk, _start_chunk, and _using_chunk.

Referenced by next_chunk().

void * byte_allocator::next_chunk

(

size_t

size

)

[private]

tries to find the next chunk in a linked list with requested size

Parameters:

size	size in bytes

Definition at line 78 of file memory.cpp.

References mem_chunk::_chunk_size, _free_pos, mem_chunk::_mem, mem_chunk::_next_chunk, _using_chunk, and new_chunk().

Referenced by allocate().

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Member Data Documentation

const size_t byte_allocator::_capacity [protected]

chunk default capacity

Definition at line 115 of file memory.h.

Referenced by capacity(), and new_chunk().

size_t byte_allocator::_count [protected]

current count of allocated chunks of memory

Definition at line 116 of file memory.h.

Referenced by clear_all(), clear_extra(), count(), and new_chunk().

unsigned char* byte_allocator::_free_pos [protected]

start position of available memory in current chunk

Definition at line 117 of file memory.h.

Referenced by allocate(), new_chunk(), next_chunk(), and reset().

mem_chunk* byte_allocator::_start_chunk [protected]

start chunk

Definition at line 118 of file memory.h.

Referenced by clear_all(), clear_extra(), new_chunk(), and reset().

mem_chunk* byte_allocator::_using_chunk [protected]

current chunk

Definition at line 119 of file memory.h.

Referenced by allocate(), clear_all(), clear_extra(), new_chunk(), next_chunk(), and reset().

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

• memory.h
• memory.cpp
• memory.hpp