Bitcoin Core  0.20.99
P2P Digital Currency
Public Member Functions | List of all members
BaseIndex::DB Class Reference

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

#include <base.h>

Inheritance diagram for BaseIndex::DB:
[legend]
Collaboration diagram for BaseIndex::DB:
[legend]

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 txindex is in sync with. More...
 
void WriteBestBlock (CDBBatch &batch, const CBlockLocator &locator)
 Write block locator of the chain that the txindex is in sync with. More...
 
- Public Member Functions inherited from CDBWrapper
 CDBWrapper (const fs::path &path, size_t nCacheSize, bool fMemory=false, bool fWipe=false, bool obfuscate=false)
 
 ~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)
 
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 index 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 37 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 30 of file base.cpp.

Member Function Documentation

◆ ReadBestBlock()

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

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

Definition at line 34 of file base.cpp.

Here is the call graph for this function:
Here is the caller graph for this function:

◆ WriteBestBlock()

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

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

Definition at line 43 of file base.cpp.

Here is the call graph for this function:
Here is the caller graph for this function:

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