Bitcoin ABC 0.30.3
P2P Digital Currency
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BaseIndex::DB Class Reference

The database stores a block locator of the chain the database is synced to so that the TxIndex can efficiently determine the point it last stopped at. More...

#include <base.h>

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Public Member Functions

 DB (const fs::path &path, size_t n_cache_size, bool f_memory=false, bool f_wipe=false, bool f_obfuscate=false)
 
bool ReadBestBlock (CBlockLocator &locator) const
 Read block locator of the chain that the index is in sync with. More...
 
void WriteBestBlock (CDBBatch &batch, const CBlockLocator &locator)
 Write block locator of the chain that the index is in sync with. More...
 
- Public Member Functions inherited from CDBWrapper
 CDBWrapper (const DBParams &params)
 
 ~CDBWrapper ()
 
 CDBWrapper (const CDBWrapper &)=delete
 
CDBWrapperoperator= (const CDBWrapper &)=delete
 
template<typename K , typename V >
bool Read (const K &key, V &value) const
 
template<typename K , typename V >
bool Write (const K &key, const V &value, bool fSync=false)
 
std::optional< fs::pathStoragePath ()
 
template<typename K >
bool Exists (const K &key) const
 
template<typename K >
bool Erase (const K &key, bool fSync=false)
 
bool WriteBatch (CDBBatch &batch, bool fSync=false)
 
size_t DynamicMemoryUsage () const
 
CDBIteratorNewIterator ()
 
bool IsEmpty ()
 Return true if the database managed by this class contains no entries. More...
 
template<typename K >
size_t EstimateSize (const K &key_begin, const K &key_end) const
 
template<typename K >
void CompactRange (const K &key_begin, const K &key_end) const
 Compact a certain range of keys in the database. More...
 

Detailed Description

The database stores a block locator of the chain the database is synced to so that the TxIndex can efficiently determine the point it last stopped at.

A locator is used instead of a simple hash of the chain tip because blocks and block index entries may not be flushed to disk until after this database is updated.

Definition at line 36 of file base.h.

Constructor & Destructor Documentation

◆ DB()

BaseIndex::DB::DB ( const fs::path path,
size_t  n_cache_size,
bool  f_memory = false,
bool  f_wipe = false,
bool  f_obfuscate = false 
)

Definition at line 37 of file base.cpp.

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Member Function Documentation

◆ ReadBestBlock()

bool BaseIndex::DB::ReadBestBlock ( CBlockLocator locator) const

Read block locator of the chain that the index is in sync with.

Definition at line 50 of file base.cpp.

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◆ WriteBestBlock()

void BaseIndex::DB::WriteBestBlock ( CDBBatch batch,
const CBlockLocator locator 
)

Write block locator of the chain that the index is in sync with.

Definition at line 58 of file base.cpp.

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