blockfilterindex.cpp File Reference

#include <map>
#include <dbwrapper.h>
#include <index/blockfilterindex.h>
#include <util/system.h>
#include <validation.h>

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Functions
static bool	CopyHeightIndexToHashIndex (CDBIterator &db_it, CDBBatch &batch, const std::string &index_name, int start_height, int stop_height)
static bool	LookupOne (const CDBWrapper &db, const CBlockIndex *block_index, DBVal &result)
static bool	LookupRange (CDBWrapper &db, const std::string &index_name, int start_height, const CBlockIndex *stop_index, std::vector< DBVal > &results)
BlockFilterIndex *	GetBlockFilterIndex (BlockFilterType filter_type)
	Get a block filter index by type. More...
void	ForEachBlockFilterIndex (std::function< void(BlockFilterIndex &)> fn)
	Iterate over all running block filter indexes, invoking fn on each. More...
bool	InitBlockFilterIndex (BlockFilterType filter_type, size_t n_cache_size, bool f_memory, bool f_wipe)
	Initialize a block filter index for the given type if one does not already exist. More...
bool	DestroyBlockFilterIndex (BlockFilterType filter_type)
	Destroy the block filter index with the given type. More...
void	DestroyAllBlockFilterIndexes ()
	Destroy all open block filter indexes. More...

Variables
constexpr char	DB_BLOCK_HASH = 's'
constexpr char	DB_BLOCK_HEIGHT = 't'
constexpr char	DB_FILTER_POS = 'P'
constexpr unsigned int	MAX_FLTR_FILE_SIZE = 0x1000000
constexpr unsigned int	FLTR_FILE_CHUNK_SIZE = 0x100000
	The pre-allocation chunk size for fltr?????.dat files. More...
constexpr size_t	CF_HEADERS_CACHE_MAX_SZ {2000}
	Maximum size of the cfheaders cache We have a limit to prevent a bug in filling this cache potentially turning into an OOM. More...
static std::map< BlockFilterType, BlockFilterIndex >	g_filter_indexes

Function Documentation

CopyHeightIndexToHashIndex()

static bool CopyHeightIndexToHashIndex ( CDBIterator &  db_it, CDBBatch &  batch, const std::string &  index_name, int  start_height, int  stop_height  )

static

Definition at line 254 of file blockfilterindex.cpp.

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DestroyAllBlockFilterIndexes()

void DestroyAllBlockFilterIndexes

(

)

Destroy all open block filter indexes.

Definition at line 479 of file blockfilterindex.cpp.

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DestroyBlockFilterIndex()

bool DestroyBlockFilterIndex

(

BlockFilterType

filter_type

)

Destroy the block filter index with the given type.

Returns false if no such index exists. This just releases the allocated memory and closes the database connection, it does not delete the index data.

Definition at line 474 of file blockfilterindex.cpp.

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ForEachBlockFilterIndex()

void ForEachBlockFilterIndex

(

std::function< void(BlockFilterIndex &)>

fn

)

Iterate over all running block filter indexes, invoking fn on each.

Definition at line 459 of file blockfilterindex.cpp.

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GetBlockFilterIndex()

BlockFilterIndex* GetBlockFilterIndex

(

BlockFilterType

filter_type

)

Get a block filter index by type.

Returns nullptr if index has not been initialized or was already destroyed.

Definition at line 453 of file blockfilterindex.cpp.

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InitBlockFilterIndex()

bool InitBlockFilterIndex	(	BlockFilterType	filter_type,
		size_t	n_cache_size,
		bool	f_memory = false,
		bool	f_wipe = false
	)

Initialize a block filter index for the given type if one does not already exist.

Returns true if a new index is created and false if one has already been initialized.

Definition at line 464 of file blockfilterindex.cpp.

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LookupOne()

static bool LookupOne ( const CDBWrapper &  db, const CBlockIndex *  block_index, DBVal &  result  )

static

Definition at line 303 of file blockfilterindex.cpp.

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LookupRange()

static bool LookupRange ( CDBWrapper &  db, const std::string &  index_name, int  start_height, const CBlockIndex *  stop_index, std::vector< DBVal > &  results  )

static

Definition at line 321 of file blockfilterindex.cpp.

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Variable Documentation

CF_HEADERS_CACHE_MAX_SZ

constexpr size_t CF_HEADERS_CACHE_MAX_SZ {2000}

Maximum size of the cfheaders cache We have a limit to prevent a bug in filling this cache potentially turning into an OOM.

At 2000 entries, this cache is big enough for a 2,000,000 length block chain, which we should be enough until ~2047.

Definition at line 39 of file blockfilterindex.cpp.

DB_BLOCK_HASH

constexpr char DB_BLOCK_HASH = 's'

Definition at line 27 of file blockfilterindex.cpp.

DB_BLOCK_HEIGHT

constexpr char DB_BLOCK_HEIGHT = 't'

Definition at line 28 of file blockfilterindex.cpp.

DB_FILTER_POS

constexpr char DB_FILTER_POS = 'P'

Definition at line 29 of file blockfilterindex.cpp.

FLTR_FILE_CHUNK_SIZE

constexpr unsigned int FLTR_FILE_CHUNK_SIZE = 0x100000

The pre-allocation chunk size for fltr?????.dat files.

Definition at line 33 of file blockfilterindex.cpp.

g_filter_indexes

std::map<BlockFilterType, BlockFilterIndex> g_filter_indexes

static

Definition at line 91 of file blockfilterindex.cpp.

MAX_FLTR_FILE_SIZE

constexpr unsigned int MAX_FLTR_FILE_SIZE = 0x1000000

Definition at line 31 of file blockfilterindex.cpp.